/* -*- mode: C++; c-basic-offset: 4; tab-width: 4 -*-
*
- * Copyright (c) 2005-2008 Apple Inc. All rights reserved.
+ * Copyright (c) 2005-2011 Apple Inc. All rights reserved.
*
* @APPLE_LICENSE_HEADER_START@
*
#include <sys/types.h>
#include <sys/stat.h>
#include <mach/vm_prot.h>
+#include <sys/sysctl.h>
#include <mach-o/dyld.h>
#include <fcntl.h>
+#include <errno.h>
+#include <string.h>
+#include <spawn.h>
+#include <cxxabi.h>
+#include <Availability.h>
+#include <tapi/tapi.h>
+
#include <vector>
+#include <map>
+#include <sstream>
-#include "configure.h"
#include "Options.h"
#include "Architectures.hpp"
#include "MachOFileAbstraction.hpp"
+#include "Snapshot.h"
+
+
+// from FunctionNameDemangle.h
+extern "C" size_t fnd_get_demangled_name(const char *mangledName, char *outputBuffer, size_t length);
+
-extern void printLTOVersion(Options &opts);
+// upward dependency on lto::version()
+namespace lto {
+ extern const char* version();
+}
// magic to place command line in crash reports
-extern "C" char* __crashreporter_info__;
-static char crashreporterBuffer[1000];
-char* __crashreporter_info__ = crashreporterBuffer;
+const int crashreporterBufferSize = 2000;
+static char crashreporterBuffer[crashreporterBufferSize];
+#if __MAC_OS_X_VERSION_MIN_REQUIRED >= 1070
+ #include <CrashReporterClient.h>
+ // hack until ld does not need to build on 10.6 anymore
+ struct crashreporter_annotations_t gCRAnnotations
+ __attribute__((section("__DATA," CRASHREPORTER_ANNOTATIONS_SECTION)))
+ = { CRASHREPORTER_ANNOTATIONS_VERSION, 0, 0, 0, 0, 0, 0 };
+#else
+ extern "C" char* __crashreporter_info__;
+ __attribute__((used))
+ char* __crashreporter_info__ = crashreporterBuffer;
+#endif
+
static bool sEmitWarnings = true;
+static bool sFatalWarnings = false;
static const char* sWarningsSideFilePath = NULL;
static FILE* sWarningsSideFile = NULL;
+static int sWarningsCount = 0;
void warning(const char* format, ...)
{
+ ++sWarningsCount;
if ( sEmitWarnings ) {
va_list list;
if ( sWarningsSideFilePath != NULL ) {
throw t;
}
+
+bool Options::FileInfo::checkFileExists(const Options& options, const char *p)
+{
+ struct stat statBuffer;
+ if (p == NULL)
+ p = path;
+ if ( stat(p, &statBuffer) == 0 ) {
+ if (p != path) path = strdup(p);
+ modTime = statBuffer.st_mtime;
+ return true;
+ }
+ if ( options.dumpDependencyInfo() )
+ options.dumpDependency(Options::depNotFound, p);
+// fprintf(stderr, "not found: %s\n", p);
+ return false;
+}
+
+
Options::Options(int argc, const char* argv[])
- : fOutputFile("a.out"), fArchitecture(0), fSubArchitecture(0), fOutputKind(kDynamicExecutable),
- fHasPreferredSubType(false), fPrebind(false), fBindAtLoad(false), fKeepPrivateExterns(false),
+ : fOutputFile("a.out"), fArchitecture(0), fSubArchitecture(0), fArchitectureName("unknown"), fOutputKind(kDynamicExecutable),
+ fHasPreferredSubType(false), fArchSupportsThumb2(false), fPrebind(false), fBindAtLoad(false), fKeepPrivateExterns(false),
fNeedsModuleTable(false), fIgnoreOtherArchFiles(false), fErrorOnOtherArchFiles(false), fForceSubtypeAll(false),
- fInterposeMode(kInterposeNone), fDeadStrip(kDeadStripOff), fNameSpace(kTwoLevelNameSpace),
- fDylibCompatVersion(0), fDylibCurrentVersion(0), fDylibInstallName(NULL), fFinalName(NULL), fEntryName("start"), fBaseAddress(0),
+ fInterposeMode(kInterposeNone), fDeadStrip(false), fNameSpace(kTwoLevelNameSpace),
+ fDylibCompatVersion(0), fDylibCurrentVersion(0), fDylibInstallName(NULL), fFinalName(NULL), fEntryName(NULL),
+ fBaseAddress(0), fMaxAddress(0x7FFFFFFFFFFFFFFFLL),
fBaseWritableAddress(0), fSplitSegs(false),
- fExportMode(kExportDefault), fLibrarySearchMode(kSearchAllDirsForDylibsThenAllDirsForArchives),
- fUndefinedTreatment(kUndefinedError), fMessagesPrefixedWithArchitecture(false),
+ fExportMode(kExportDefault), fLibrarySearchMode(kSearchDylibAndArchiveInEachDir),
+ fUndefinedTreatment(kUndefinedError), fMessagesPrefixedWithArchitecture(true),
fWeakReferenceMismatchTreatment(kWeakReferenceMismatchNonWeak),
fClientName(NULL),
fUmbrellaName(NULL), fInitFunctionName(NULL), fDotOutputFile(NULL), fExecutablePath(NULL),
fBundleLoader(NULL), fDtraceScriptName(NULL), fSegAddrTablePath(NULL), fMapPath(NULL),
- fZeroPageSize(ULLONG_MAX), fStackSize(0), fStackAddr(0), fExecutableStack(false),
+ fDyldInstallPath("/usr/lib/dyld"), fLtoCachePath(NULL), fTempLtoObjectPath(NULL), fOverridePathlibLTO(NULL), fLtoCpu(NULL),
+ fZeroPageSize(ULLONG_MAX), fStackSize(0), fStackAddr(0), fSourceVersion(0), fSDKVersion(0), fExecutableStack(false),
+ fNonExecutableHeap(false), fDisableNonExecutableHeap(false),
fMinimumHeaderPad(32), fSegmentAlignment(4096),
fCommonsMode(kCommonsIgnoreDylibs), fUUIDMode(kUUIDContent), fLocalSymbolHandling(kLocalSymbolsAll), fWarnCommons(false),
fVerbose(false), fKeepRelocations(false), fWarnStabs(false),
fTraceDylibSearching(false), fPause(false), fStatistics(false), fPrintOptions(false),
- fSharedRegionEligible(false), fPrintOrderFileStatistics(false),
- fReadOnlyx86Stubs(false), fPositionIndependentExecutable(false), fMaxMinimumHeaderPad(false),
- fDeadStripDylibs(false), fAllowTextRelocs(false), fWarnTextRelocs(false),
- fUsingLazyDylibLinking(false), fEncryptable(true),
+ fSharedRegionEligible(false), fSharedRegionEligibleForceOff(false), fPrintOrderFileStatistics(false),
+ fReadOnlyx86Stubs(false), fPositionIndependentExecutable(false), fPIEOnCommandLine(false),
+ fDisablePositionIndependentExecutable(false), fMaxMinimumHeaderPad(false),
+ fDeadStripDylibs(false), fAllowTextRelocs(false), fWarnTextRelocs(false), fKextsUseStubs(false),
+ fUsingLazyDylibLinking(false), fEncryptable(true), fEncryptableForceOn(false), fEncryptableForceOff(false),
fOrderData(true), fMarkDeadStrippableDylib(false),
- fMakeClassicDyldInfo(true), fMakeCompressedDyldInfo(true), fAllowCpuSubtypeMismatches(false),
- fUseSimplifiedDylibReExports(false), fSaveTempFiles(false)
+ fMakeCompressedDyldInfo(true), fMakeCompressedDyldInfoForceOff(false), fNoEHLabels(false),
+ fAllowCpuSubtypeMismatches(false), fEnforceDylibSubtypesMatch(false), fUseSimplifiedDylibReExports(false),
+ fObjCABIVersion2Override(false), fObjCABIVersion1Override(false), fCanUseUpwardDylib(false),
+ fFullyLoadArchives(false), fLoadAllObjcObjectsFromArchives(false), fFlatNamespace(false),
+ fLinkingMainExecutable(false), fForFinalLinkedImage(false), fForStatic(false),
+ fForDyld(false), fMakeTentativeDefinitionsReal(false), fWhyLoad(false), fRootSafe(false),
+ fSetuidSafe(false), fImplicitlyLinkPublicDylibs(true), fAddCompactUnwindEncoding(true),
+ fWarnCompactUnwind(false), fRemoveDwarfUnwindIfCompactExists(false),
+ fAutoOrderInitializers(true), fOptimizeZeroFill(true), fMergeZeroFill(false), fLogObjectFiles(false),
+ fLogAllFiles(false), fTraceDylibs(false), fTraceIndirectDylibs(false), fTraceArchives(false), fTraceEmitJSON(false),
+ fOutputSlidable(false), fWarnWeakExports(false),
+ fObjcGcCompaction(false), fObjCGc(false), fObjCGcOnly(false),
+ fDemangle(false), fTLVSupport(false),
+ fVersionLoadCommand(false), fVersionLoadCommandForcedOn(false),
+ fVersionLoadCommandForcedOff(false), fFunctionStartsLoadCommand(false),
+ fFunctionStartsForcedOn(false), fFunctionStartsForcedOff(false),
+ fDataInCodeInfoLoadCommand(false), fDataInCodeInfoLoadCommandForcedOn(false), fDataInCodeInfoLoadCommandForcedOff(false),
+ fCanReExportSymbols(false), fObjcCategoryMerging(true), fPageAlignDataAtoms(false),
+ fNeedsThreadLoadCommand(false), fEntryPointLoadCommand(false),
+ fEntryPointLoadCommandForceOn(false), fEntryPointLoadCommandForceOff(false),
+ fSourceVersionLoadCommand(false),
+ fSourceVersionLoadCommandForceOn(false), fSourceVersionLoadCommandForceOff(false),
+ fTargetIOSSimulator(false), fExportDynamic(false), fAbsoluteSymbols(false),
+ fAllowSimulatorToLinkWithMacOSX(false), fKeepDwarfUnwind(true),
+ fKeepDwarfUnwindForcedOn(false), fKeepDwarfUnwindForcedOff(false),
+ fVerboseOptimizationHints(false), fIgnoreOptimizationHints(false),
+ fGenerateDtraceDOF(true), fAllowBranchIslands(true), fTraceSymbolLayout(false),
+ fMarkAppExtensionSafe(false), fCheckAppExtensionSafe(false), fForceLoadSwiftLibs(false),
+ fSharedRegionEncodingV2(false), fUseDataConstSegment(false),
+ fUseDataConstSegmentForceOn(false), fUseDataConstSegmentForceOff(false), fUseTextExecSegment(false),
+ fBundleBitcode(false), fHideSymbols(false), fVerifyBitcode(false),
+ fReverseMapUUIDRename(false), fDeDupe(true), fVerboseDeDupe(false),
+ fReverseMapPath(NULL), fLTOCodegenOnly(false),
+ fIgnoreAutoLink(false), fAllowDeadDups(false), fAllowWeakImports(true), fBitcodeKind(kBitcodeProcess),
+ fPlatform(kPlatformUnknown), fDebugInfoStripping(kDebugInfoMinimal), fTraceOutputFile(NULL),
+ fMacVersionMin(ld::macVersionUnset), fIOSVersionMin(ld::iOSVersionUnset), fWatchOSVersionMin(ld::wOSVersionUnset),
+ fSaveTempFiles(false), fSnapshotRequested(false), fPipelineFifo(NULL),
+ fDependencyInfoPath(NULL), fDependencyFileDescriptor(-1), fTraceFileDescriptor(-1), fMaxDefaultCommonAlign(0)
{
this->checkForClassic(argc, argv);
this->parsePreCommandLineEnvironmentSettings();
this->parsePostCommandLineEnvironmentSettings();
this->reconfigureDefaults();
this->checkIllegalOptionCombinations();
+
+ if ( this->dumpDependencyInfo() ) {
+ this->dumpDependency(depOutputFile, fOutputFile);
+ if ( fMapPath != NULL )
+ this->dumpDependency(depOutputFile, fMapPath);
+ }
}
Options::~Options()
{
-}
-
-const ObjectFile::ReaderOptions& Options::readerOptions()
-{
- return fReaderOptions;
-}
-
-
-const char* Options::getOutputFilePath()
-{
- return fOutputFile;
-}
-
-std::vector<Options::FileInfo>& Options::getInputFiles()
-{
- return fInputFiles;
-}
-
-Options::OutputKind Options::outputKind()
-{
- return fOutputKind;
-}
-
-bool Options::bindAtLoad()
-{
- return fBindAtLoad;
-}
+ if ( fDependencyFileDescriptor != -1 )
+ ::close(fDependencyFileDescriptor);
-bool Options::prebind()
-{
- return fPrebind;
+ if ( fTraceFileDescriptor != -1 )
+ ::close(fTraceFileDescriptor);
}
-bool Options::fullyLoadArchives()
+bool Options::errorBecauseOfWarnings() const
{
- return fReaderOptions.fFullyLoadArchives;
+ return (sFatalWarnings && (sWarningsCount > 0));
}
-Options::NameSpace Options::nameSpace()
-{
- return fNameSpace;
-}
-const char* Options::installPath()
+const char* Options::installPath() const
{
if ( fDylibInstallName != NULL )
return fDylibInstallName;
return fOutputFile;
}
-uint32_t Options::currentVersion()
-{
- return fDylibCurrentVersion;
-}
-
-uint32_t Options::compatibilityVersion()
-{
- return fDylibCompatVersion;
-}
-
-const char* Options::entryName()
-{
- return fEntryName;
-}
-
-uint64_t Options::baseAddress()
-{
- return fBaseAddress;
-}
-
-bool Options::keepPrivateExterns()
-{
- return fKeepPrivateExterns;
-}
-bool Options::interposable(const char* name)
+bool Options::interposable(const char* name) const
{
switch ( fInterposeMode ) {
case kInterposeNone:
throw "internal error";
}
-bool Options::needsModuleTable()
-{
- return fNeedsModuleTable;
-}
-
-bool Options::ignoreOtherArchInputFiles()
-{
- return fIgnoreOtherArchFiles;
-}
-
-bool Options::forceCpuSubtypeAll()
-{
- return fForceSubtypeAll;
-}
-
-bool Options::traceDylibs()
-{
- return fReaderOptions.fTraceDylibs;
-}
-
-bool Options::traceArchives()
-{
- return fReaderOptions.fTraceArchives;
-}
-
-Options::UndefinedTreatment Options::undefinedTreatment()
-{
- return fUndefinedTreatment;
-}
-
-Options::WeakReferenceMismatchTreatment Options::weakReferenceMismatchTreatment()
-{
- return fWeakReferenceMismatchTreatment;
-}
-
-const char* Options::umbrellaName()
-{
- return fUmbrellaName;
-}
-
-std::vector<const char*>& Options::allowableClients()
-{
- return fAllowableClients;
-}
-
-const char* Options::clientName()
-{
- return fClientName;
-}
-
-uint64_t Options::zeroPageSize()
-{
- return fZeroPageSize;
-}
-
-bool Options::hasCustomStack()
-{
- return (fStackSize != 0);
-}
-
-uint64_t Options::customStackSize()
-{
- return fStackSize;
-}
-
-uint64_t Options::customStackAddr()
-{
- return fStackAddr;
-}
-
-bool Options::hasExecutableStack()
-{
- return fExecutableStack;
-}
-
-std::vector<const char*>& Options::initialUndefines()
-{
- return fInitialUndefines;
-}
-bool Options::printWhyLive(const char* symbolName)
+bool Options::printWhyLive(const char* symbolName) const
{
- return ( fWhyLive.find(symbolName) != fWhyLive.end() );
+ return fWhyLive.contains(symbolName);
}
-const char* Options::initFunctionName()
-{
- return fInitFunctionName;
-}
-
const char* Options::dotOutputFile()
{
return fDotOutputFile;
}
-bool Options::hasExportRestrictList()
-{
- return (fExportMode != kExportDefault);
-}
-bool Options::hasExportMaskList()
+bool Options::hasWildCardExportRestrictList() const
{
- return (fExportMode == kExportSome);
+ // has -exported_symbols_list which contains some wildcards
+ return ((fExportMode == kExportSome) && fExportSymbols.hasWildCards());
}
-
-bool Options::hasWildCardExportRestrictList()
+bool Options::hasWeakBitTweaks() const
{
// has -exported_symbols_list which contains some wildcards
- return ((fExportMode == kExportSome) && fExportSymbols.hasWildCards());
+ return (!fForceWeakSymbols.empty() || !fForceNotWeakSymbols.empty());
}
-
-bool Options::allGlobalsAreDeadStripRoots()
+bool Options::allGlobalsAreDeadStripRoots() const
{
// -exported_symbols_list means globals are not exported by default
if ( fExportMode == kExportSome )
//
switch ( fOutputKind ) {
case Options::kDynamicExecutable:
+ // <rdar://problem/12839986> Add the -export_dynamic flag
+ return fExportDynamic;
case Options::kStaticExecutable:
+ // <rdar://problem/13361218> Support the -export_dynamic flag for xnu
+ return fExportDynamic;
case Options::kPreload:
// by default unused globals in a main executable are stripped
return false;
return false;
}
-uint32_t Options::minimumHeaderPad()
+
+bool Options::keepRelocations()
+{
+ return fKeepRelocations;
+}
+
+bool Options::warnStabs()
{
- return fMinimumHeaderPad;
+ return fWarnStabs;
}
-std::vector<Options::ExtraSection>& Options::extraSections()
+const char* Options::executablePath()
{
- return fExtraSections;
+ return fExecutablePath;
}
-std::vector<Options::SectionAlignment>& Options::sectionAlignments()
+uint32_t Options::initialSegProtection(const char* segName) const
{
- return fSectionAlignments;
+ for(std::vector<Options::SegmentProtect>::const_iterator it = fCustomSegmentProtections.begin(); it != fCustomSegmentProtections.end(); ++it) {
+ if ( strcmp(it->name, segName) == 0 ) {
+ return it->init;
+ }
+ }
+ if ( strcmp(segName, "__TEXT") == 0 ) {
+ return ( fUseTextExecSegment ? VM_PROT_READ : (VM_PROT_READ | VM_PROT_EXECUTE) );
+ }
+ else if ( strcmp(segName, "__TEXT_EXEC") == 0 ) {
+ return VM_PROT_READ | VM_PROT_EXECUTE;
+ }
+ else if ( strcmp(segName, "__PAGEZERO") == 0 ) {
+ return 0;
+ }
+ else if ( strcmp(segName, "__LINKEDIT") == 0 ) {
+ return VM_PROT_READ;
+ }
+
+ // all others default to read-write
+ return VM_PROT_READ | VM_PROT_WRITE;
}
-Options::CommonsMode Options::commonsMode()
+uint32_t Options::maxSegProtection(const char* segName) const
+{
+ // iPhoneOS always uses same protection for max and initial
+ // <rdar://problem/11663436> simulator apps need to use MacOSX max-prot
+ if ( (fPlatform != kPlatformOSX) && !fTargetIOSSimulator )
+ return initialSegProtection(segName);
+
+ for(std::vector<Options::SegmentProtect>::const_iterator it = fCustomSegmentProtections.begin(); it != fCustomSegmentProtections.end(); ++it) {
+ if ( strcmp(it->name, segName) == 0 ) {
+ return it->max;
+ }
+ }
+ if ( strcmp(segName, "__PAGEZERO") == 0 ) {
+ return 0;
+ }
+ // all others default to all
+ return VM_PROT_READ | VM_PROT_WRITE | VM_PROT_EXECUTE;
+}
+
+uint64_t Options::segPageSize(const char* segName) const
{
- return fCommonsMode;
+ for(std::vector<SegmentSize>::const_iterator it=fCustomSegmentSizes.begin(); it != fCustomSegmentSizes.end(); ++it) {
+ if ( strcmp(it->name, segName) == 0 )
+ return it->size;
+ }
+ return fSegmentAlignment;
}
-bool Options::warnCommons()
+uint64_t Options::customSegmentAddress(const char* segName) const
{
- return fWarnCommons;
+ for(std::vector<SegmentStart>::const_iterator it=fCustomSegmentAddresses.begin(); it != fCustomSegmentAddresses.end(); ++it) {
+ if ( strcmp(it->name, segName) == 0 )
+ return it->address;
+ }
+ // if custom stack in use, model as segment with custom address
+ if ( (fStackSize != 0) && (strcmp("__UNIXSTACK", segName) == 0) )
+ return fStackAddr - fStackSize;
+ return 0;
}
-bool Options::keepRelocations()
+bool Options::hasCustomSegmentAddress(const char* segName) const
{
- return fKeepRelocations;
+ for(std::vector<SegmentStart>::const_iterator it=fCustomSegmentAddresses.begin(); it != fCustomSegmentAddresses.end(); ++it) {
+ if ( strcmp(it->name, segName) == 0 )
+ return true;
+ }
+ // if custom stack in use, model as segment with custom address
+ if ( (fStackSize != 0) && (strcmp("__UNIXSTACK", segName) == 0) )
+ return true;
+ return false;
}
-bool Options::warnStabs()
+bool Options::hasCustomSectionAlignment(const char* segName, const char* sectName) const
{
- return fWarnStabs;
+ for (std::vector<SectionAlignment>::const_iterator it = fSectionAlignments.begin(); it != fSectionAlignments.end(); ++it) {
+ if ( (strcmp(it->segmentName, segName) == 0) && (strcmp(it->sectionName, sectName) == 0) )
+ return true;
+ }
+ if ( fEncryptable && (strcmp(sectName, "__oslogstring") == 0) && (strcmp(segName, "__TEXT") == 0) )
+ return true;
+
+ return false;
}
-const char* Options::executablePath()
+uint8_t Options::customSectionAlignment(const char* segName, const char* sectName) const
{
- return fExecutablePath;
+ for (std::vector<SectionAlignment>::const_iterator it = fSectionAlignments.begin(); it != fSectionAlignments.end(); ++it) {
+ if ( (strcmp(it->segmentName, segName) == 0) && (strcmp(it->sectionName, sectName) == 0) )
+ return it->alignment;
+ }
+ if ( fEncryptable && (strcmp(sectName, "__oslogstring") == 0) && (strcmp(segName, "__TEXT") == 0) )
+ return __builtin_ctz(fSegmentAlignment);
+
+ return 0;
}
-Options::DeadStripMode Options::deadStrip()
+bool Options::segmentOrderAfterFixedAddressSegment(const char* segName) const
{
- return fDeadStrip;
+ bool nowPinned = false;
+ for (std::vector<const char*>::const_iterator it=fSegmentOrder.begin(); it != fSegmentOrder.end(); ++it) {
+ if ( strcmp(*it, segName) == 0 )
+ return nowPinned;
+ if ( hasCustomSegmentAddress(*it) )
+ nowPinned = true;
+ }
+ return false;
}
bool Options::hasExportedSymbolOrder()
return (fExportSymbolsOrder.size() > 0);
}
-bool Options::exportedSymbolOrder(const char* sym, unsigned int* order)
+bool Options::exportedSymbolOrder(const char* sym, unsigned int* order) const
{
- NameToOrder::iterator pos = fExportSymbolsOrder.find(sym);
+ NameToOrder::const_iterator pos = fExportSymbolsOrder.find(sym);
if ( pos != fExportSymbolsOrder.end() ) {
*order = pos->second;
return true;
::close(fd);
- // parse into symbols and add to hash_set
+ // parse into symbols and add to unordered_set
unsigned int count = 0;
char * const end = &p[stat_buf.st_size];
enum { lineStart, inSymbol, inComment } state = lineStart;
// Note: we do not free() the malloc buffer, because the strings are used by the export-set hash table
}
+bool Options::forceWeak(const char* symbolName) const
+{
+ return fForceWeakSymbols.contains(symbolName);
+}
+
+bool Options::forceNotWeak(const char* symbolName) const
+{
+ return fForceNotWeakSymbols.contains(symbolName);
+}
+
+bool Options::forceWeakNonWildCard(const char* symbolName) const
+{
+ return fForceWeakSymbols.containsNonWildcard(symbolName);
+}
+
+bool Options::forceNotWeakNonWildcard(const char* symbolName) const
+{
+ return fForceNotWeakSymbols.containsNonWildcard(symbolName);
+}
+
+bool Options::forceCoalesce(const char* symbolName) const
+{
+ return fForceCoalesceSymbols.contains(symbolName);
+}
-bool Options::shouldExport(const char* symbolName)
+
+bool Options::shouldExport(const char* symbolName) const
{
switch (fExportMode) {
case kExportSome:
throw "internal error";
}
-bool Options::keepLocalSymbol(const char* symbolName)
+bool Options::shouldReExport(const char* symbolName) const
+{
+ return fReExportSymbols.contains(symbolName);
+}
+
+bool Options::keepLocalSymbol(const char* symbolName) const
{
switch (fLocalSymbolHandling) {
case kLocalSymbolsAll:
throw "internal error";
}
-void Options::parseArch(const char* architecture)
+const std::vector<const char*>* Options::sectionOrder(const char* segName) const
+{
+ for (std::vector<SectionOrderList>::const_iterator it=fSectionOrder.begin(); it != fSectionOrder.end(); ++it) {
+ if ( strcmp(it->segmentName, segName) == 0 )
+ return &it->sectionOrder;
+ }
+ return NULL;
+}
+
+uint32_t Options::minOSversion() const
+{
+ switch (fPlatform) {
+ case kPlatformiOS:
+ return iOSVersionMin();
+ case kPlatformOSX:
+ return macosxVersionMin();
+ case kPlatformWatchOS:
+ return watchOSVersionMin();
+#if SUPPORT_APPLE_TV
+ case Options::kPlatform_tvOS:
+ return iOSVersionMin();
+#endif
+ default:
+ break;
+ }
+ return 0;
+}
+
+void Options::setArchitecture(cpu_type_t type, cpu_subtype_t subtype, Options::Platform platform)
+{
+ for (const ArchInfo* t=archInfoArray; t->archName != NULL; ++t) {
+ if ( (type == t->cpuType) && (subtype == t->cpuSubType) ) {
+ fArchitecture = type;
+ fSubArchitecture = subtype;
+ fArchitectureName = t->archName;
+ fHasPreferredSubType = t->isSubType;
+ fArchSupportsThumb2 = t->supportsThumb2;
+ fPlatform = platform;
+ switch ( type ) {
+ case CPU_TYPE_I386:
+ case CPU_TYPE_X86_64:
+ if ( (fPlatform == kPlatformOSX) && (fOutputKind != Options::kObjectFile) && (fMacVersionMin == ld::macVersionUnset) ) {
+ #ifdef DEFAULT_MACOSX_MIN_VERSION
+ warning("-macosx_version_min not specified, assuming " DEFAULT_MACOSX_MIN_VERSION);
+ setMacOSXVersionMin(DEFAULT_MACOSX_MIN_VERSION);
+ #else
+ warning("-macosx_version_min not specified, assuming 10.6");
+ fMacVersionMin = ld::mac10_6;
+ #endif
+ }
+ break;
+ case CPU_TYPE_ARM:
+ case CPU_TYPE_ARM64:
+ if ( (fMacVersionMin == ld::macVersionUnset) && (fIOSVersionMin == ld::iOSVersionUnset) && (fOutputKind != Options::kObjectFile) ) {
+ #if defined(DEFAULT_IPHONEOS_MIN_VERSION)
+ warning("-ios_version_min not specified, assuming " DEFAULT_IPHONEOS_MIN_VERSION);
+ setIOSVersionMin(DEFAULT_IPHONEOS_MIN_VERSION);
+ #else
+ warning("-ios_version_min not specified, assuming 6.0");
+ setIOSVersionMin("6.0");
+ #endif
+ }
+ break;
+ }
+ fLinkSnapshot.recordArch(fArchitectureName);
+ // only use compressed LINKEDIT for:
+ // Mac OS X 10.6 or later
+ // iOS 3.1 or later
+ if ( !fMakeCompressedDyldInfo && minOS(ld::mac10_6, ld::iOS_3_1) && !fMakeCompressedDyldInfoForceOff )
+ fMakeCompressedDyldInfo = true;
+ // Mac OS X 10.5 and iPhoneOS 2.0 support LC_REEXPORT_DYLIB
+ if ( minOS(ld::mac10_5, ld::iOS_2_0) )
+ fUseSimplifiedDylibReExports = true;
+ return;
+ }
+ }
+ fArchitectureName = "unknown architecture";
+}
+
+bool Options::armUsesZeroCostExceptions() const
+{
+ return ( (fArchitecture == CPU_TYPE_ARM) && (fSubArchitecture == CPU_SUBTYPE_ARM_V7K) );
+}
+
+void Options::parseArch(const char* arch)
{
- if ( architecture == NULL )
+ if ( arch == NULL )
throw "-arch must be followed by an architecture string";
- if ( strcmp(architecture, "ppc") == 0 ) {
- fArchitecture = CPU_TYPE_POWERPC;
- fSubArchitecture = CPU_SUBTYPE_POWERPC_ALL;
- }
- else if ( strcmp(architecture, "ppc64") == 0 ) {
- fArchitecture = CPU_TYPE_POWERPC64;
- fSubArchitecture = CPU_SUBTYPE_POWERPC_ALL;
- }
- else if ( strcmp(architecture, "i386") == 0 ) {
- fArchitecture = CPU_TYPE_I386;
- fSubArchitecture = CPU_SUBTYPE_I386_ALL;
- }
- else if ( strcmp(architecture, "x86_64") == 0 ) {
- fArchitecture = CPU_TYPE_X86_64;
- fSubArchitecture = CPU_SUBTYPE_X86_64_ALL;
- }
- else if ( strcmp(architecture, "arm") == 0 ) {
- fArchitecture = CPU_TYPE_ARM;
- fSubArchitecture = CPU_SUBTYPE_ARM_ALL;
- }
- // compatibility support for cpu-sub-types
- else if ( strcmp(architecture, "ppc750") == 0 ) {
- fArchitecture = CPU_TYPE_POWERPC;
- fSubArchitecture = CPU_SUBTYPE_POWERPC_750;
- fHasPreferredSubType = true;
- }
- else if ( strcmp(architecture, "ppc7400") == 0 ) {
- fArchitecture = CPU_TYPE_POWERPC;
- fSubArchitecture = CPU_SUBTYPE_POWERPC_7400;
- fHasPreferredSubType = true;
- }
- else if ( strcmp(architecture, "ppc7450") == 0 ) {
- fArchitecture = CPU_TYPE_POWERPC;
- fSubArchitecture = CPU_SUBTYPE_POWERPC_7450;
- fHasPreferredSubType = true;
- }
- else if ( strcmp(architecture, "ppc970") == 0 ) {
- fArchitecture = CPU_TYPE_POWERPC;
- fSubArchitecture = CPU_SUBTYPE_POWERPC_970;
- fHasPreferredSubType = true;
- }
- else if ( strcmp(architecture, "armv6") == 0 ) {
- fArchitecture = CPU_TYPE_ARM;
- fSubArchitecture = CPU_SUBTYPE_ARM_V6;
- fHasPreferredSubType = true;
- }
- else if ( strcmp(architecture, "armv5") == 0 ) {
- fArchitecture = CPU_TYPE_ARM;
- fSubArchitecture = CPU_SUBTYPE_ARM_V5TEJ;
- fHasPreferredSubType = true;
- }
- else if ( strcmp(architecture, "armv4t") == 0 ) {
- fArchitecture = CPU_TYPE_ARM;
- fSubArchitecture = CPU_SUBTYPE_ARM_V4T;
- fHasPreferredSubType = true;
- }
- else if ( strcmp(architecture, "xscale") == 0 ) {
- fArchitecture = CPU_TYPE_ARM;
- fSubArchitecture = CPU_SUBTYPE_ARM_XSCALE;
- fHasPreferredSubType = true;
- }
- else if ( strcmp(architecture, "armv7") == 0 ) {
- fArchitecture = CPU_TYPE_ARM;
- fSubArchitecture = CPU_SUBTYPE_ARM_V7;
- fHasPreferredSubType = true;
+ for (const ArchInfo* t=archInfoArray; t->archName != NULL; ++t) {
+ if ( strcmp(t->archName,arch) == 0 ) {
+ fArchitectureName = arch;
+ fArchitecture = t->cpuType;
+ fSubArchitecture = t->cpuSubType;
+ fHasPreferredSubType = t->isSubType;
+ fArchSupportsThumb2 = t->supportsThumb2;
+ return;
+ }
}
- else
- throwf("unknown/unsupported architecture name for: -arch %s", architecture);
+ throwf("unknown/unsupported architecture name for: -arch %s", arch);
}
-bool Options::checkForFile(const char* format, const char* dir, const char* rootName, FileInfo& result)
+bool Options::checkForFile(const char* format, const char* dir, const char* rootName, FileInfo& result) const
{
- struct stat statBuffer;
char possiblePath[strlen(dir)+strlen(rootName)+strlen(format)+8];
sprintf(possiblePath, format, dir, rootName);
- bool found = (stat(possiblePath, &statBuffer) == 0);
+ bool found = result.checkFileExists(*this, possiblePath);
if ( fTraceDylibSearching )
printf("[Logging for XBS]%sfound library: '%s'\n", (found ? " " : " not "), possiblePath);
- if ( found ) {
- result.path = strdup(possiblePath);
- result.fileLen = statBuffer.st_size;
- result.modTime = statBuffer.st_mtime;
- return true;
- }
- return false;
+ return found;
}
-Options::FileInfo Options::findLibrary(const char* rootName, bool dylibsOnly)
+Options::FileInfo Options::findLibrary(const char* rootName, bool dylibsOnly) const
{
FileInfo result;
const int rootNameLen = strlen(rootName);
// if rootName ends in .o there is no .a vs .dylib choice
if ( (rootNameLen > 3) && (strcmp(&rootName[rootNameLen-2], ".o") == 0) ) {
- for (std::vector<const char*>::iterator it = fLibrarySearchPaths.begin();
+ for (std::vector<const char*>::const_iterator it = fLibrarySearchPaths.begin();
it != fLibrarySearchPaths.end();
it++) {
const char* dir = *it;
}
}
else {
- bool lookForDylibs = ( fOutputKind != Options::kDyld);
+ bool lookForDylibs = false;
+ switch ( fOutputKind ) {
+ case Options::kDynamicExecutable:
+ case Options::kDynamicLibrary:
+ case Options::kDynamicBundle:
+ case Options::kObjectFile: // <rdar://problem/15914513>
+ lookForDylibs = true;
+ break;
+ case Options::kStaticExecutable:
+ case Options::kDyld:
+ case Options::kPreload:
+ case Options::kKextBundle:
+ lookForDylibs = false;
+ break;
+ }
switch ( fLibrarySearchMode ) {
case kSearchAllDirsForDylibsThenAllDirsForArchives:
// first look in all directories for just for dylibs
if ( lookForDylibs ) {
- for (std::vector<const char*>::iterator it = fLibrarySearchPaths.begin();
+ for (std::vector<const char*>::const_iterator it = fLibrarySearchPaths.begin();
it != fLibrarySearchPaths.end();
it++) {
const char* dir = *it;
- if ( checkForFile("%s/lib%s.dylib", dir, rootName, result) )
+ auto path = std::string(dir) + "/lib" + rootName + ".dylib";
+ if ( findFile(path, {".tbd"}, result) )
return result;
}
- for (std::vector<const char*>::iterator it = fLibrarySearchPaths.begin();
+ for (std::vector<const char*>::const_iterator it = fLibrarySearchPaths.begin();
it != fLibrarySearchPaths.end();
it++) {
const char* dir = *it;
}
// next look in all directories for just for archives
if ( !dylibsOnly ) {
- for (std::vector<const char*>::iterator it = fLibrarySearchPaths.begin();
+ for (std::vector<const char*>::const_iterator it = fLibrarySearchPaths.begin();
it != fLibrarySearchPaths.end();
it++) {
const char* dir = *it;
case kSearchDylibAndArchiveInEachDir:
// look in each directory for just for a dylib then for an archive
- for (std::vector<const char*>::iterator it = fLibrarySearchPaths.begin();
+ for (std::vector<const char*>::const_iterator it = fLibrarySearchPaths.begin();
it != fLibrarySearchPaths.end();
it++) {
const char* dir = *it;
- if ( lookForDylibs && checkForFile("%s/lib%s.dylib", dir, rootName, result) )
+ auto path = std::string(dir) + "/lib" + rootName + ".dylib";
+ if ( lookForDylibs && findFile(path, {".tbd"}, result) )
return result;
if ( lookForDylibs && checkForFile("%s/lib%s.so", dir, rootName, result) )
return result;
throwf("library not found for -l%s", rootName);
}
-Options::FileInfo Options::findFramework(const char* frameworkName)
+Options::FileInfo Options::findFramework(const char* frameworkName) const
{
if ( frameworkName == NULL )
throw "-framework missing next argument";
return findFramework(name, suffix);
}
-Options::FileInfo Options::findFramework(const char* rootName, const char* suffix)
+Options::FileInfo Options::findFramework(const char* rootName, const char* suffix) const
{
- struct stat statBuffer;
- for (std::vector<const char*>::iterator it = fFrameworkSearchPaths.begin();
- it != fFrameworkSearchPaths.end();
- it++) {
- // ??? Shouldn't we be using String here and just initializing it?
- // ??? Use str.c_str () to pull out the string for the stat call.
- const char* dir = *it;
- char possiblePath[PATH_MAX];
- strcpy(possiblePath, dir);
- strcat(possiblePath, "/");
- strcat(possiblePath, rootName);
- strcat(possiblePath, ".framework/");
- strcat(possiblePath, rootName);
- if ( suffix != NULL ) {
+ for (const auto* path : fFrameworkSearchPaths) {
+ auto possiblePath = std::string(path).append("/").append(rootName).append(".framework/").append(rootName);
+ if ( suffix != nullptr ) {
char realPath[PATH_MAX];
// no symlink in framework to suffix variants, so follow main symlink
- if ( realpath(possiblePath, realPath) != NULL ) {
- strcpy(possiblePath, realPath);
- strcat(possiblePath, suffix);
- }
+ if ( realpath(possiblePath.c_str(), realPath) != nullptr )
+ possiblePath = std::string(realPath).append(suffix);
}
- bool found = (stat(possiblePath, &statBuffer) == 0);
- if ( fTraceDylibSearching )
- printf("[Logging for XBS]%sfound framework: '%s'\n",
- (found ? " " : " not "), possiblePath);
- if ( found ) {
- FileInfo result;
- result.path = strdup(possiblePath);
- result.fileLen = statBuffer.st_size;
- result.modTime = statBuffer.st_mtime;
+ FileInfo result;
+ if ( findFile(possiblePath, {".tbd"}, result) )
return result;
- }
}
// try without suffix
if ( suffix != NULL )
throwf("framework not found %s", rootName);
}
-Options::FileInfo Options::findFile(const char* path)
+static std::string replace_extension(const std::string &path, const std::string &ext)
{
- FileInfo result;
- struct stat statBuffer;
+ auto result = path;
+ auto lastSlashIdx = result.find_last_of('/');
+ auto lastDotIdx = result.find_last_of('.');
+ if (lastDotIdx != std::string::npos && lastDotIdx > lastSlashIdx)
+ result.erase(lastDotIdx, std::string::npos);
+ if ( ext.size() > 0 && ext[0] == '.' )
+ result.append(ext);
+ else
+ result.append('.' + ext);
+ return result;
+}
- // if absolute path and not a .o file, the use SDK prefix
- if ( (path[0] == '/') && (strcmp(&path[strlen(path)-2], ".o") != 0) ) {
- const int pathLen = strlen(path);
- for (std::vector<const char*>::iterator it = fSDKPaths.begin(); it != fSDKPaths.end(); it++) {
- // ??? Shouldn't we be using String here?
- const char* sdkPathDir = *it;
- const int sdkPathDirLen = strlen(sdkPathDir);
- char possiblePath[sdkPathDirLen+pathLen+4];
- strcpy(possiblePath, sdkPathDir);
- if ( possiblePath[sdkPathDirLen-1] == '/' )
- possiblePath[sdkPathDirLen-1] = '\0';
- strcat(possiblePath, path);
- if ( stat(possiblePath, &statBuffer) == 0 ) {
- result.path = strdup(possiblePath);
- result.fileLen = statBuffer.st_size;
- result.modTime = statBuffer.st_mtime;
- return result;
- }
- }
+bool Options::findFile(const std::string &path, const std::vector<std::string> &tbdExtensions, FileInfo& result) const
+{
+ FileInfo tbdInfo;
+ for ( const auto &ext : tbdExtensions ) {
+ auto newPath = replace_extension(path, ext);
+ bool found = tbdInfo.checkFileExists(*this, newPath.c_str());
+ if ( fTraceDylibSearching )
+ printf("[Logging for XBS]%sfound library: '%s'\n", (found ? " " : " not "), newPath.c_str());
+ if ( found )
+ break;
}
- // try raw path
- if ( stat(path, &statBuffer) == 0 ) {
- result.path = strdup(path);
- result.fileLen = statBuffer.st_size;
- result.modTime = statBuffer.st_mtime;
- return result;
+
+ FileInfo dylibInfo;
+ {
+ bool found = dylibInfo.checkFileExists(*this, path.c_str());
+ if ( fTraceDylibSearching )
+ printf("[Logging for XBS]%sfound library: '%s'\n", (found ? " " : " not "), path.c_str());
}
- // try @executable_path substitution
- if ( (strncmp(path, "@executable_path/", 17) == 0) && (fExecutablePath != NULL) ) {
- char newPath[strlen(fExecutablePath) + strlen(path)];
- strcpy(newPath, fExecutablePath);
- char* addPoint = strrchr(newPath,'/');
- if ( addPoint != NULL )
- strcpy(&addPoint[1], &path[17]);
- else
- strcpy(newPath, &path[17]);
- if ( stat(newPath, &statBuffer) == 0 ) {
- result.path = strdup(newPath);
- result.fileLen = statBuffer.st_size;
- result.modTime = statBuffer.st_mtime;
- return result;
+ // There is only a text-based stub file or a dynamic library file.
+ if ( tbdInfo.missing() != dylibInfo.missing() ) {
+ result = tbdInfo.missing() ? dylibInfo : tbdInfo;
+ }
+ // There are both - a text-based stub file and a dynamic library file.
+ else if ( !tbdInfo.missing() && !dylibInfo.missing() ) {
+ // Check if we should prefer the text-based stub file (installapi).
+ if (tapi::LinkerInterfaceFile::shouldPreferTextBasedStubFile(tbdInfo.path)) {
+ result = tbdInfo;
+ }
+ // If the files are still in sync we can use and should use the text-based stub file.
+ else if (tapi::LinkerInterfaceFile::areEquivalent(tbdInfo.path, dylibInfo.path)) {
+ result = tbdInfo;
+ }
+ // Otherwise issue a warning and fall-back to the dynamic library file.
+ else {
+ warning("text-based stub file %s and library file %s are out of sync. Falling back to library file for linking.", tbdInfo.path, dylibInfo.path);
+ result = dylibInfo;
}
+ } else {
+ return false;
}
- // not found
- throwf("file not found: %s", path);
+ return true;
+}
+
+static bool startsWith(const std::string& str, const std::string& prefix)
+{
+ return (str.compare(0, prefix.length(), prefix) == 0);
+}
+
+static std::string getDirPath(const std::string& path)
+{
+ std::string::size_type lastSlashPos = path.find_last_of('/');
+ if ( lastSlashPos == std::string::npos )
+ return "./";
+ else
+ return path.substr(0, lastSlashPos+1);
}
-Options::FileInfo Options::findFileUsingPaths(const char* path)
+Options::FileInfo Options::findFile(const std::string &path, const ld::dylib::File* fromDylib) const
{
FileInfo result;
- const char* lastSlash = strrchr(path, '/');
- const char* leafName = (lastSlash == NULL) ? path : &lastSlash[1];
+ // if absolute path and not a .o file, then use SDK prefix
+ if ( (path[0] == '/') && (strcmp(&path[path.size()-2], ".o") != 0) ) {
+ for (const auto* sdkPathDir : fSDKPaths) {
+ auto possiblePath = std::string(sdkPathDir) + path;
+ if ( findFile(possiblePath, {".tbd"}, result) )
+ return result;
+ }
+ }
- // Is this in a framework?
- // /path/Foo.framework/Foo ==> true (Foo)
- // /path/Foo.framework/Frameworks/Bar.framework/Bar ==> true (Bar)
- // /path/Foo.framework/Resources/Bar ==> false
+ // expand @ variables
+ if ( path[0] == '@' ) {
+ if ( startsWith(path, "@executable_path/") && (fExecutablePath != nullptr) ) {
+ std::string exeBasedPath = getDirPath(fExecutablePath) + &path[17];
+ if ( findFile(exeBasedPath, {".tbd"}, result) )
+ return result;
+ }
+ else if ( startsWith(path, "@loader_path/") && (fromDylib != nullptr) ) {
+ char absPath[PATH_MAX];
+ if ( realpath(fromDylib->path(), absPath) != NULL ) {
+ std::string loaderBasedPath = getDirPath(fromDylib->path()) + &path[13];
+ if ( findFile(loaderBasedPath, {".tbd"}, result) )
+ return result;
+ }
+ }
+ else if ( startsWith(path, "@rpath/") ) {
+ // first search any LC_RPATH supplied by dyld that re-exports dylib to be found
+ if ( fromDylib != nullptr ) {
+ for (const char* rp : fromDylib->rpaths() ) {
+ std::string rpath = rp;
+ // handle dylib that has LC_RPATH = @loader_path/blah
+ if ( startsWith(rpath, "@loader_path/") ) {
+ char absPath[PATH_MAX];
+ if ( realpath(fromDylib->path(), absPath) != NULL )
+ rpath = getDirPath(absPath) + &rpath[13];
+ else
+ rpath = getDirPath(fromDylib->path()) + &rpath[13];
+ }
+ std::string rpathBasedPath = rpath + "/" + &path[6];
+ if ( findFile(rpathBasedPath, {".tbd"}, result) )
+ return result;
+ }
+ }
+ }
+ }
+
+ // try raw path
+ if ( findFile(path, {".tbd"}, result) )
+ return result;
+
+ // not found
+ throwf("file not found: %s", path.c_str());
+}
+
+// search for indirect dylib first using -F and -L paths first
+Options::FileInfo Options::findIndirectDylib(const std::string& installName, const ld::dylib::File* fromDylib) const
+{
+ FileInfo result;
+
+ auto lastSlashPos = installName.find_last_of('/');
+ auto pos = ( lastSlashPos != std::string::npos ) ? lastSlashPos + 1 : 0;
+ auto leafName = installName.substr(pos);
+
+ // Is this in a framework?
+ // /path/Foo.framework/Foo ==> true (Foo)
+ // /path/Foo.framework/Frameworks/Bar.framework/Bar ==> true (Bar)
+ // /path/Foo.framework/Resources/Bar ==> false
bool isFramework = false;
- if ( lastSlash != NULL ) {
- char frameworkDir[strlen(leafName) + 20];
- strcpy(frameworkDir, "/");
- strcat(frameworkDir, leafName);
- strcat(frameworkDir, ".framework/");
- if ( strstr(path, frameworkDir) != NULL )
+ if ( lastSlashPos != std::string::npos ) {
+ auto frameworkDir = std::string("/").append(leafName).append(".framework/");
+ if ( installName.rfind(frameworkDir) != std::string::npos )
isFramework = true;
}
// don't need to try variations, just paths. We do need to add the additional bits
// onto the framework path though.
if ( isFramework ) {
- for (std::vector<const char*>::iterator it = fFrameworkSearchPaths.begin();
- it != fFrameworkSearchPaths.end();
- it++) {
- const char* dir = *it;
- char possiblePath[PATH_MAX];
- strcpy(possiblePath, dir);
- strcat(possiblePath, "/");
- strcat(possiblePath, leafName);
- strcat(possiblePath, ".framework");
-
- //fprintf(stderr,"Finding Framework: %s/%s, leafName=%s\n", possiblePath, leafName, leafName);
- if ( checkForFile("%s/%s", possiblePath, leafName, result) )
+ auto endPos = installName.rfind(".framework");
+ auto beginPos = installName.find_last_of('/', endPos);
+ auto leafPath = installName.substr(beginPos);
+ for (const auto* dir : fFrameworkSearchPaths) {
+ auto possiblePath = dir + leafPath;
+ if ( findFile(possiblePath, {".tbd"}, result) )
return result;
}
- }
- else {
+ } else {
// if this is a .dylib inside a framework, do not search -L paths
- // <rdar://problem/5427952> ld64's re-export cycle detection logic prevents use of X11 libGL on Leopard
- int leafLen = strlen(leafName);
- bool embeddedDylib = ( (leafLen > 6)
- && (strcmp(&leafName[leafLen-6], ".dylib") == 0)
- && (strstr(path, ".framework/") != NULL) );
+ // <rdar://problem/5427952> ld64's re-export cycle detection logic prevents use of X11 libGL on Leopard
+ bool embeddedDylib = ( (leafName.size() > 6)
+ && (leafName.find(".dylib", leafName.size()-6) != std::string::npos)
+ && (installName.find(".framework/") != std::string::npos) );
if ( !embeddedDylib ) {
- for (std::vector<const char*>::iterator it = fLibrarySearchPaths.begin();
- it != fLibrarySearchPaths.end();
- it++) {
- const char* dir = *it;
+ for (const auto* dir : fLibrarySearchPaths) {
//fprintf(stderr,"Finding Library: %s/%s\n", dir, leafName);
- if ( checkForFile("%s/%s", dir, leafName, result) )
+ std::string possiblePath = dir + std::string("/") + leafName;
+ if ( findFile(possiblePath, {".tbd"}, result) )
return result;
}
}
}
// If we didn't find it fall back to findFile.
- return findFile(path);
+ return findFile(installName, fromDylib);
}
-
-void Options::parseSegAddrTable(const char* segAddrPath, const char* installPath)
+
+
+void Options::parseSegAddrTable(const char* segAddrPath, const char* installPth)
{
FILE* file = fopen(segAddrPath, "r");
if ( file == NULL ) {
for(char* end = eol-1; (end > p) && isspace(*end); --end)
*end = '\0';
// see if this line is for the dylib being linked
- if ( strcmp(p, installPath) == 0 ) {
+ if ( strcmp(p, installPth) == 0 ) {
fBaseAddress = firstColumAddress;
if ( hasSecondColumn ) {
fBaseWritableAddress = secondColumAddress;
fclose(file);
}
-void Options::loadFileList(const char* fileOfPaths)
+void Options::loadFileList(const char* fileOfPaths, ld::File::Ordinal baseOrdinal)
{
FILE* file;
const char* comma = strrchr(fileOfPaths, ',');
realFileOfPaths[realFileOfPathsLen] = '\0';
file = fopen(realFileOfPaths, "r");
if ( file == NULL )
- throwf("-filelist file not found: %s\n", realFileOfPaths);
+ throwf("-filelist file '%s' could not be opened, errno=%d (%s)\n", realFileOfPaths, errno, strerror(errno));
+ if ( this->dumpDependencyInfo() )
+ this->dumpDependency(Options::depFileList, realFileOfPaths);
}
}
else {
file = fopen(fileOfPaths, "r");
if ( file == NULL )
- throwf("-filelist file not found: %s\n", fileOfPaths);
+ throwf("-filelist file '%s' could not be opened, errno=%d (%s)\n", fileOfPaths, errno, strerror(errno));
+ if ( this->dumpDependencyInfo() )
+ this->dumpDependency(Options::depFileList, fileOfPaths);
}
char path[PATH_MAX];
+ ld::File::Ordinal previousOrdinal = baseOrdinal;
while ( fgets(path, PATH_MAX, file) != NULL ) {
path[PATH_MAX-1] = '\0';
char* eol = strchr(path, '\n');
strcpy(builtPath, prefix);
strcat(builtPath, "/");
strcat(builtPath, path);
- fInputFiles.push_back(findFile(builtPath));
+ if (fPipelineFifo != NULL) {
+ FileInfo info = FileInfo(builtPath);
+ info.ordinal = previousOrdinal.nextFileListOrdinal();
+ previousOrdinal = info.ordinal;
+ info.fromFileList = true;
+ fInputFiles.push_back(info);
+ } else {
+ FileInfo info = findFile(builtPath);
+ info.ordinal = previousOrdinal.nextFileListOrdinal();
+ previousOrdinal = info.ordinal;
+ info.fromFileList = true;
+ fInputFiles.push_back(info);
+ }
}
else {
- fInputFiles.push_back(findFile(path));
+ if (fPipelineFifo != NULL) {
+ FileInfo info = FileInfo(path);
+ info.ordinal = previousOrdinal.nextFileListOrdinal();
+ previousOrdinal = info.ordinal;
+ info.fromFileList = true;
+ fInputFiles.push_back(info);
+ } else {
+ FileInfo info = findFile(path);
+ info.ordinal = previousOrdinal.nextFileListOrdinal();
+ previousOrdinal = info.ordinal;
+ info.fromFileList = true;
+ fInputFiles.push_back(info);
+ }
}
}
fclose(file);
}
-bool Options::SetWithWildcards::hasWildCards(const char* symbol)
+
+void Options::SetWithWildcards::remove(const NameSet& toBeRemoved)
+{
+ for(NameSet::const_iterator it=toBeRemoved.begin(); it != toBeRemoved.end(); ++it) {
+ const char* symbolName = *it;
+ NameSet::iterator pos = fRegular.find(symbolName);
+ if ( pos != fRegular.end() )
+ fRegular.erase(pos);
+ }
+}
+
+bool Options::SetWithWildcards::hasWildCards(const char* symbol)
{
// an exported symbol name containing *, ?, or [ requires wildcard matching
return ( strpbrk(symbol, "*?[") != NULL );
fRegular.insert(symbol);
}
-bool Options::SetWithWildcards::contains(const char* symbol)
+bool Options::SetWithWildcards::contains(const char* symbol, bool* matchBecauseOfWildcard) const
{
+ if ( matchBecauseOfWildcard != NULL )
+ *matchBecauseOfWildcard = false;
// first look at hash table on non-wildcard symbols
if ( fRegular.find(symbol) != fRegular.end() )
return true;
// next walk list of wild card symbols looking for a match
- for(std::vector<const char*>::iterator it = fWildCard.begin(); it != fWildCard.end(); ++it) {
- if ( wildCardMatch(*it, symbol) )
+ for(std::vector<const char*>::const_iterator it = fWildCard.begin(); it != fWildCard.end(); ++it) {
+ if ( wildCardMatch(*it, symbol) ) {
+ if ( matchBecauseOfWildcard != NULL )
+ *matchBecauseOfWildcard = true;
return true;
+ }
}
return false;
}
+// Support "foo.o:_bar" to mean symbol _bar in file foo.o
+bool Options::SetWithWildcards::containsWithPrefix(const char* symbol, const char* file, bool& wildCardMatch) const
+{
+ wildCardMatch = false;
+ if ( contains(symbol, &wildCardMatch) )
+ return true;
+ if ( file == NULL )
+ return false;
+ const char* s = strrchr(file, '/');
+ if ( s != NULL )
+ file = s+1;
+ char buff[strlen(file)+strlen(symbol)+2];
+ sprintf(buff, "%s:%s", file, symbol);
+ return contains(buff, &wildCardMatch);
+}
+
+bool Options::SetWithWildcards::containsNonWildcard(const char* symbol) const
+{
+ // look at hash table on non-wildcard symbols
+ return ( fRegular.find(symbol) != fRegular.end() );
+}
+
+
+std::vector<const char*> Options::exportsData() const
+{
+ return fExportSymbols.data();
+}
+
+
+std::vector<const char*> Options::SetWithWildcards::data() const
+{
+ std::vector<const char*> data;
+ for (NameSet::iterator it=regularBegin(); it != regularEnd(); ++it) {
+ data.push_back(*it);
+ }
+ for (std::vector<const char*>::const_iterator it=fWildCard.begin(); it != fWildCard.end(); ++it) {
+ data.push_back(*it);
+ }
+ return data;
+}
-bool Options::SetWithWildcards::inCharRange(const char*& p, unsigned char c)
+bool Options::SetWithWildcards::inCharRange(const char*& p, unsigned char c) const
{
++p; // find end
const char* b = p;
return false;
}
-bool Options::SetWithWildcards::wildCardMatch(const char* pattern, const char* symbol)
+bool Options::SetWithWildcards::wildCardMatch(const char* pattern, const char* symbol) const
{
const char* s = symbol;
for (const char* p = pattern; *p != '\0'; ++p) {
void Options::loadExportFile(const char* fileOfExports, const char* option, SetWithWildcards& set)
{
+ if ( fileOfExports == NULL )
+ throwf("missing file after %s", option);
// read in whole file
int fd = ::open(fileOfExports, O_RDONLY, 0);
if ( fd == -1 )
if ( read(fd, p, stat_buf.st_size) != stat_buf.st_size )
throwf("can't read %s file: %s", option, fileOfExports);
+ if ( this->dumpDependencyInfo() )
+ this->dumpDependency(Options::depMisc, fileOfExports);
+
::close(fd);
- // parse into symbols and add to hash_set
+ // parse into symbols and add to unordered_set
char * const end = &p[stat_buf.st_size];
enum { lineStart, inSymbol, inComment } state = lineStart;
char* symbolStart = NULL;
throwf("can't read alias file: %s", fileOfAliases);
p[stat_buf.st_size] = '\n';
::close(fd);
+ if ( this->dumpDependencyInfo() )
+ this->dumpDependency(Options::depMisc, fileOfAliases);
// parse into symbols and add to fAliases
- ObjectFile::ReaderOptions::AliasPair pair;
+ AliasPair pair;
char * const end = &p[stat_buf.st_size+1];
enum { lineStart, inRealName, inBetween, inAliasName, inComment } state = lineStart;
int lineNumber = 1;
*last = '\0';
--last;
}
- fReaderOptions.fAliases.push_back(pair);
+ fAliases.push_back(pair);
state = inComment;
}
else if ( *s == '\n' ) {
*last = '\0';
--last;
}
- fReaderOptions.fAliases.push_back(pair);
+ fAliases.push_back(pair);
state = lineStart;
}
break;
void Options::setMacOSXVersionMin(const char* version)
{
- if ( version == NULL )
- throw "-macosx_version_min argument missing";
-
- if ( (strncmp(version, "10.", 3) == 0) && isdigit(version[3]) ) {
- int num = version[3] - '0';
- switch ( num ) {
- case 0:
- case 1:
- fReaderOptions.fMacVersionMin = ObjectFile::ReaderOptions::k10_1;
- break;
- case 2:
- fReaderOptions.fMacVersionMin = ObjectFile::ReaderOptions::k10_2;
- break;
- case 3:
- fReaderOptions.fMacVersionMin = ObjectFile::ReaderOptions::k10_3;
- break;
- case 4:
- fReaderOptions.fMacVersionMin = ObjectFile::ReaderOptions::k10_4;
- break;
- case 5:
- fReaderOptions.fMacVersionMin = ObjectFile::ReaderOptions::k10_5;
- break;
- case 6:
- fReaderOptions.fMacVersionMin = ObjectFile::ReaderOptions::k10_6;
- break;
- default:
- fReaderOptions.fMacVersionMin = ObjectFile::ReaderOptions::k10_6;
- break;
- }
+ uint32_t value;
+ if ( !parsePackedVersion32(version, value) ) {
+ throwf("-macosx_version_min value malformed: '%s'", version);
}
- else {
- warning("unknown option to -macosx_version_min, not 10.x");
+ fMacVersionMin = (ld::MacVersionMin)value;
+ fPlatform = kPlatformOSX;
+}
+
+void Options::setIOSVersionMin(const char* version)
+{
+ uint32_t value;
+ if ( !parsePackedVersion32(version, value) ) {
+ throwf("-ios_version_min value malformed: '%s'", version);
}
+ fIOSVersionMin = (ld::IOSVersionMin)value;
+ fPlatform = kPlatformiOS;
}
-void Options::setIPhoneVersionMin(const char* version)
+
+void Options::setWatchOSVersionMin(const char* version)
{
- if ( version == NULL )
- throw "-iphoneos_version_min argument missing";
- if ( ! isdigit(version[0]) )
- throw "-iphoneos_version_min argument is not a number";
- if ( version[1] != '.' )
- throw "-iphoneos_version_min argument is missing period as second character";
- if ( ! isdigit(version[2]) )
- throw "-iphoneos_version_min argument is not a number";
+ uint32_t value;
+ if ( !parsePackedVersion32(version, value) ) {
+ throwf("-watchos_version_min value malformed: '%s'", version);
+ }
+ fWatchOSVersionMin = (ld::WatchOSVersionMin)value;
+ fPlatform = kPlatformWatchOS;
+}
- if ( version[0] == '2' )
- fReaderOptions.fIPhoneVersionMin = ObjectFile::ReaderOptions::k2_0;
- else if ( (version[0] == '3') && (version[2] == '0') )
- fReaderOptions.fIPhoneVersionMin = ObjectFile::ReaderOptions::k2_0;
- else if ( (version[0] == '3') && (version[2] >= '1') )
- fReaderOptions.fIPhoneVersionMin = ObjectFile::ReaderOptions::k3_1;
- else if ( (version[0] >= '4') )
- fReaderOptions.fIPhoneVersionMin = ObjectFile::ReaderOptions::k3_1;
+
+bool Options::minOS(ld::MacVersionMin requiredMacMin, ld::IOSVersionMin requirediPhoneOSMin)
+{
+ if ( fMacVersionMin != ld::macVersionUnset ) {
+ return ( fMacVersionMin >= requiredMacMin );
+ }
+ else if ( fWatchOSVersionMin != ld::wOSVersionUnset ) {
+ // Hack until we fully track watch and ios versions seperately
+ return ( (fWatchOSVersionMin + 0x00070000) >= requirediPhoneOSMin);
+ }
else {
- fReaderOptions.fIPhoneVersionMin = ObjectFile::ReaderOptions::k2_0;
- warning("unknown option to -iphoneos_version_min, not 2.x, 3.x, or 4.x");
+ return ( fIOSVersionMin >= requirediPhoneOSMin );
}
}
-bool Options::minOS(ObjectFile::ReaderOptions::MacVersionMin requiredMacMin, ObjectFile::ReaderOptions::IPhoneVersionMin requirediPhoneOSMin)
+bool Options::min_iOS(ld::IOSVersionMin requirediOSMin)
{
- if ( fReaderOptions.fMacVersionMin != ObjectFile::ReaderOptions::kMinMacVersionUnset ) {
- return ( fReaderOptions.fMacVersionMin >= requiredMacMin );
+ if ( fWatchOSVersionMin != ld::wOSVersionUnset ) {
+ // Hack until we fully track watch and ios versions seperately
+ return ( (fWatchOSVersionMin + 0x00070000) >= requirediOSMin);
}
else {
- return ( fReaderOptions.fIPhoneVersionMin >= requirediPhoneOSMin);
+ return ( fIOSVersionMin >= requirediOSMin );
}
}
-
void Options::setWeakReferenceMismatchTreatment(const char* treatment)
{
if ( treatment == NULL )
}
+//
+// Parses number of form A[.B[.B[.D[.E]]]] into a uint64_t where the bits are a24.b10.c10.d10.e10
+//
+uint64_t Options::parseVersionNumber64(const char* versionString)
+{
+ uint64_t a = 0;
+ uint64_t b = 0;
+ uint64_t c = 0;
+ uint64_t d = 0;
+ uint64_t e = 0;
+ char* end;
+ a = strtoul(versionString, &end, 10);
+ if ( *end == '.' ) {
+ b = strtoul(&end[1], &end, 10);
+ if ( *end == '.' ) {
+ c = strtoul(&end[1], &end, 10);
+ if ( *end == '.' ) {
+ d = strtoul(&end[1], &end, 10);
+ if ( *end == '.' ) {
+ e = strtoul(&end[1], &end, 10);
+ }
+ }
+ }
+ }
+ if ( (*end != '\0') || (a > 0xFFFFFF) || (b > 0x3FF) || (c > 0x3FF) || (d > 0x3FF) || (e > 0x3FF) )
+ throwf("malformed 64-bit a.b.c.d.e version number: %s", versionString);
+
+ return (a << 40) | ( b << 30 ) | ( c << 20 ) | ( d << 10 ) | e;
+}
+
+
+uint32_t Options::currentVersion32() const
+{
+ // warn if it does not fit into 32 bit vers number
+ uint32_t a = (fDylibCurrentVersion >> 40) & 0xFFFF;
+ uint32_t b = (fDylibCurrentVersion >> 30) & 0xFF;
+ uint32_t c = (fDylibCurrentVersion >> 20) & 0xFF;
+ uint64_t rep32 = ((uint64_t)a << 40) | ((uint64_t)b << 30) | ((uint64_t)c << 20);
+ if ( rep32 != fDylibCurrentVersion ) {
+ warning("truncating -current_version to fit in 32-bit space used by old mach-o format");
+ a = (fDylibCurrentVersion >> 40) & 0xFFFFFF;
+ if ( a > 0xFFFF )
+ a = 0xFFFF;
+ b = (fDylibCurrentVersion >> 30) & 0x3FF;
+ if ( b > 0xFF )
+ b = 0xFF;
+ c = (fDylibCurrentVersion >> 20) & 0x3FF;
+ if ( c > 0xFF )
+ c = 0xFF;
+ }
+ return (a << 16) | ( b << 8 ) | c;
+}
//
// Parses number of form X[.Y[.Z]] into a uint32_t where the nibbles are xxxx.yy.zz
//
-//
-uint32_t Options::parseVersionNumber(const char* versionString)
+uint32_t Options::parseVersionNumber32(const char* versionString)
{
- unsigned long x = 0;
- unsigned long y = 0;
- unsigned long z = 0;
+ uint32_t x = 0;
+ uint32_t y = 0;
+ uint32_t z = 0;
char* end;
x = strtoul(versionString, &end, 10);
if ( *end == '.' ) {
}
}
if ( (*end != '\0') || (x > 0xffff) || (y > 0xff) || (z > 0xff) )
- throwf("malformed version number: %s", versionString);
+ throwf("malformed 32-bit x.y.z version number: %s", versionString);
return (x << 16) | ( y << 8 ) | z;
}
void Options::parseOrderFile(const char* path, bool cstring)
{
// order files override auto-ordering
- fReaderOptions.fAutoOrderInitializers = false;
+ fAutoOrderInitializers = false;
+
+ // <rdar://problem/24856050> ld64 should prefer OrderFiles from the SDK over the ones in /
+ for (const char* sdkPath : fSDKPaths) {
+ char fullPath[PATH_MAX];
+ strlcpy(fullPath, sdkPath, PATH_MAX);
+ strlcat(fullPath, "/", PATH_MAX);
+ strlcat(fullPath, path, PATH_MAX);
+ struct stat statBuffer;
+ if ( stat(fullPath, &statBuffer) == 0 ) {
+ path = strdup(fullPath);
+ break;
+ }
+ }
// read in whole file
int fd = ::open(path, O_RDONLY, 0);
throwf("can't read order file: %s", path);
::close(fd);
p[stat_buf.st_size] = '\n';
+ if ( this->dumpDependencyInfo() )
+ this->dumpDependency(Options::depMisc, path);
// parse into vector of pairs
char * const end = &p[stat_buf.st_size+1];
*last = '\0';
--last;
}
+ // if there is an architecture prefix, only use this symbol it if matches current arch
if ( strncmp(symbolStart, "ppc:", 4) == 0 ) {
- if ( fArchitecture == CPU_TYPE_POWERPC )
- symbolStart = &symbolStart[4];
- else
- symbolStart = NULL;
+ symbolStart = NULL;
}
- // if there is an architecture prefix, only use this symbol it if matches current arch
else if ( strncmp(symbolStart, "ppc64:", 6) == 0 ) {
- if ( fArchitecture == CPU_TYPE_POWERPC64 )
- symbolStart = &symbolStart[6];
- else
- symbolStart = NULL;
+ symbolStart = NULL;
}
else if ( strncmp(symbolStart, "i386:", 5) == 0 ) {
if ( fArchitecture == CPU_TYPE_I386 )
else
symbolStart = NULL;
}
+ else if ( strncmp(symbolStart, "arm64:", 6) == 0 ) {
+ if ( fArchitecture == CPU_TYPE_ARM64 )
+ symbolStart = &symbolStart[6];
+ else
+ symbolStart = NULL;
+ }
if ( symbolStart != NULL ) {
char* objFileName = NULL;
char* colon = strstr(symbolStart, ".o:");
objFileName = symbolStart;
symbolStart = &colon[3];
}
+ else {
+ colon = strstr(symbolStart, ".o):");
+ if ( colon != NULL ) {
+ colon[3] = '\0';
+ objFileName = symbolStart;
+ symbolStart = &colon[4];
+ }
+ }
// trim leading spaces
while ( isspace(*symbolStart) )
++symbolStart;
::close(fd);
// record section to create
- ExtraSection info = { segment, section, path, (uint8_t*)p, stat_buf.st_size };
+ ExtraSection info = { segment, section, path, (uint8_t*)p, (uint64_t)stat_buf.st_size };
fExtraSections.push_back(info);
}
+void Options::addSectionRename(const char* srcSegment, const char* srcSection, const char* dstSegment, const char* dstSection)
+{
+ if ( strlen(srcSegment) > 16 )
+ throw "-rename_section segment name max 16 chars";
+ if ( strlen(srcSection) > 16 )
+ throw "-rename_section section name max 16 chars";
+ if ( strlen(dstSegment) > 16 )
+ throw "-rename_section segment name max 16 chars";
+ if ( strlen(dstSection) > 16 )
+ throw "-rename_section section name max 16 chars";
+
+ SectionRename info;
+ info.fromSegment = srcSegment;
+ info.fromSection = srcSection;
+ info.toSegment = dstSegment;
+ info.toSection = dstSection;
+
+ fSectionRenames.push_back(info);
+}
+
+
+void Options::addSegmentRename(const char* srcSegment, const char* dstSegment)
+{
+ if ( strlen(srcSegment) > 16 )
+ throw "-rename_segment segment name max 16 chars";
+ if ( strlen(dstSegment) > 16 )
+ throw "-rename_segment segment name max 16 chars";
+
+ SegmentRename info;
+ info.fromSegment = srcSegment;
+ info.toSegment = dstSegment;
+
+ fSegmentRenames.push_back(info);
+}
+
+
+
+void Options::addSymbolMove(const char* dstSegment, const char* symbolList,
+ std::vector<SymbolsMove>& list, const char* optionName)
+{
+ if ( strlen(dstSegment) > 16 )
+ throwf("%s segment name max 16 chars", optionName);
+
+ SymbolsMove tmp;
+ list.push_back(tmp);
+ SymbolsMove& info = list.back();
+ info.toSegment = dstSegment;
+ loadExportFile(symbolList, optionName, info.symbols);
+}
+
+bool Options::moveRwSymbol(const char* symName, const char* filePath, const char*& seg, bool& wildCardMatch) const
+{
+ for (std::vector<SymbolsMove>::const_iterator it=fSymbolsMovesData.begin(); it != fSymbolsMovesData.end(); ++it) {
+ const SymbolsMove& info = *it;
+ if ( info.symbols.containsWithPrefix(symName, filePath, wildCardMatch)) {
+ seg = info.toSegment;
+ return true;
+ }
+ }
+ return false;
+}
+
+bool Options::moveRoSymbol(const char* symName, const char* filePath, const char*& seg, bool& wildCardMatch) const
+{
+ for (std::vector<SymbolsMove>::const_iterator it=fSymbolsMovesCode.begin(); it != fSymbolsMovesCode.end(); ++it) {
+ const SymbolsMove& info = *it;
+ if ( info.symbols.containsWithPrefix(symName, filePath, wildCardMatch)) {
+ seg = info.toSegment;
+ return true;
+ }
+ }
+ return false;
+}
+
void Options::addSectionAlignment(const char* segment, const char* section, const char* alignmentStr)
{
if ( strlen(segment) > 16 )
}
+void Options::cannotBeUsedWithBitcode(const char* arg)
+{
+ if ( fBundleBitcode )
+ throwf("%s and -bitcode_bundle (Xcode setting ENABLE_BITCODE=YES) cannot be used together", arg);
+}
+
+std::string Options::getVersionString32(uint32_t ver) const
+{
+ if (ver == 0 || ver >= 0x10000000)
+ return "0.0.0";
+
+ unsigned microVersion = ver & 0xFF;
+ unsigned minorVersion = (ver >> 8) & 0xFF;
+ unsigned majorVersion = (ver >> 16) & 0xFF;
+ std::stringstream versionString;
+ versionString << majorVersion << "." << minorVersion << "." << microVersion;
+ return versionString.str();
+}
+
+std::string Options::getVersionString64(uint64_t ver) const
+{
+ uint64_t a = (ver >> 40) & 0xFFFFFF;
+ uint64_t b = (ver >> 30) & 0x3FF;
+ uint64_t c = (ver >> 20) & 0x3FF;
+ uint64_t d = (ver >> 10) & 0x3FF;
+ uint64_t e = ver & 0x3FF;
+ std::stringstream versionString;
+ versionString << a << "." << b << "." << c << "." << d << "." << e;
+ return versionString.str();
+}
+
+// Convert X.Y[.Z] to 32-bit value xxxxyyzz
+bool Options::parsePackedVersion32(const std::string& versionStr, uint32_t &result)
+{
+ result = 0;
+
+ if ( versionStr.empty() )
+ return false;
+
+ size_t pos = versionStr.find('.');
+ if ( pos == std::string::npos )
+ return false;
+
+ std::string majorStr = versionStr.substr(0, pos);
+ std::string rest = versionStr.substr(pos+1);
+
+ try {
+ size_t majorEnd;
+ int majorValue = std::stoi(majorStr, &majorEnd);
+ if ( majorEnd != majorStr.size() )
+ return false;
+ if ( majorValue < 0 )
+ return false;
+ if ( majorValue > 65535 )
+ return false;
+
+ std::string minorStr;
+ std::string microStr;
+ pos = rest.find('.');
+ if ( pos == std::string::npos ) {
+ minorStr = rest;
+ }
+ else {
+ minorStr = rest.substr(0, pos);
+ microStr = rest.substr(pos+1);
+ }
+
+ size_t minorEnd;
+ int minorValue = std::stoi(minorStr, &minorEnd);
+ if ( minorEnd != minorStr.size() )
+ return false;
+ if ( minorValue < 0 )
+ return false;
+ if ( minorValue > 255 )
+ return false;
+
+ int microValue = 0;
+ if ( !microStr.empty() ) {
+ size_t microEnd;
+ microValue = std::stoi(microStr, µEnd);
+ if ( microEnd != microStr.size() )
+ return false;
+ if ( microValue < 0 )
+ return false;
+ if ( microValue > 255 )
+ return false;
+ }
+
+ result = (majorValue << 16) | (minorValue << 8) | microValue;
+
+ return true;
+ }
+ catch (...) {
+ // std::stoi() throws exception on malformed input
+ return false;
+ }
+}
+
+std::string Options::getSDKVersionStr() const
+{
+ return getVersionString32(fSDKVersion);
+}
+
+std::string Options::getPlatformStr() const
+{
+ switch (fPlatform) {
+ case Options::kPlatformOSX:
+ return "MacOSX";
+ case Options::kPlatformiOS:
+ if (targetIOSSimulator())
+ return "iPhoneSimulator";
+ else
+ return "iPhoneOS";
+ case Options::kPlatformWatchOS:
+ if (targetIOSSimulator())
+ return "watchOS Simulator";
+ else
+ return "watchOS";
+#if SUPPORT_APPLE_TV
+ case Options::kPlatform_tvOS:
+ if (targetIOSSimulator())
+ return "AppleTVSimulator";
+ else
+ return "AppleTVOS";
+ break;
+#endif
+ case Options::kPlatformUnknown:
+ return "Unknown";
+ }
+}
+
+std::vector<std::string> Options::writeBitcodeLinkOptions() const
+{
+ std::vector<std::string> linkCommand;
+ switch ( fOutputKind ) {
+ case Options::kDynamicLibrary:
+ linkCommand.push_back("-dylib");
+ linkCommand.push_back("-compatibility_version");
+ if ( fDylibCompatVersion != 0 ) {
+ linkCommand.push_back(getVersionString32(fDylibCompatVersion));
+ } else {
+ linkCommand.push_back(getVersionString32(currentVersion32()));
+ }
+ if ( fDylibCurrentVersion != 0 ) {
+ linkCommand.push_back("-current_version");
+ linkCommand.push_back(getVersionString64(fDylibCurrentVersion));
+ }
+ linkCommand.push_back("-install_name");
+ linkCommand.push_back(installPath());
+ break;
+ case Options::kDynamicExecutable:
+ linkCommand.push_back("-execute");
+ break;
+ case Options::kObjectFile:
+ linkCommand.push_back("-r");
+ break;
+ default:
+ throwf("could not write bitcode options file output kind\n");
+ }
+
+ if (!fImplicitlyLinkPublicDylibs)
+ linkCommand.push_back("-no_implicit_dylibs");
+
+ // Add deployment target.
+ // Platform is allowed to be unknown for "ld -r".
+ switch (fPlatform) {
+ case Options::kPlatformOSX:
+ linkCommand.push_back("-macosx_version_min");
+ linkCommand.push_back(getVersionString32((unsigned)fMacVersionMin));
+ break;
+ case Options::kPlatformiOS:
+ if (targetIOSSimulator())
+ linkCommand.push_back("-ios_simulator_version_min");
+ else
+ linkCommand.push_back("-ios_version_min");
+ linkCommand.push_back(getVersionString32((unsigned)fIOSVersionMin));
+ break;
+ case Options::kPlatformWatchOS:
+ if (targetIOSSimulator())
+ linkCommand.push_back("-watchos_simulator_version_min");
+ else
+ linkCommand.push_back("-watchos_version_min");
+ linkCommand.push_back(getVersionString32((unsigned)fIOSVersionMin));
+ break;
+#if SUPPORT_APPLE_TV
+ case Options::kPlatform_tvOS:
+ if (targetIOSSimulator())
+ linkCommand.push_back("-tvos_simulator_version_min");
+ else
+ linkCommand.push_back("-tvos_version_min");
+ linkCommand.push_back(getVersionString32((unsigned)fIOSVersionMin));
+ break;
+#endif
+ case Options::kPlatformUnknown:
+ if ( fOutputKind != Options::kObjectFile ) {
+ throwf("platform is unknown for final bitcode bundle,"
+ "deployment target and min version is required for -bitcode_bundle");
+ }
+ break;
+ }
+
+
+ // entry name
+ if ( fEntryName ) {
+ linkCommand.push_back("-e");
+ linkCommand.push_back(fEntryName);
+ }
+
+ // Write rpaths
+ if (!fRPaths.empty()) {
+ for (std::vector<const char*>::const_iterator it=fRPaths.begin(); it != fRPaths.end(); ++it) {
+ linkCommand.push_back("-rpath");
+ linkCommand.push_back(*it);
+ }
+ }
+
+ // Other bitcode compatiable options
+ if ( fObjCABIVersion1Override ) {
+ linkCommand.push_back("-objc_abi_version");
+ linkCommand.push_back("1");
+ } else if ( fObjCABIVersion2Override ) {
+ linkCommand.push_back("-objc_abi_version");
+ linkCommand.push_back("2");
+ }
+ if ( fExecutablePath ) {
+ linkCommand.push_back("-executable_path");
+ linkCommand.push_back(fExecutablePath);
+ }
+ if ( fDeadStrip )
+ linkCommand.push_back("-dead_strip");
+ if ( fExportDynamic )
+ linkCommand.push_back("-export_dynamic");
+ if ( fMarkAppExtensionSafe && fCheckAppExtensionSafe )
+ linkCommand.push_back("-application_extension");
+
+ if ( fSourceVersionLoadCommandForceOn )
+ linkCommand.push_back("-add_source_version");
+ if ( fSourceVersion != 0 ) {
+ linkCommand.push_back("-source_version");
+ linkCommand.push_back(getVersionString64(fSourceVersion));
+ }
+
+ // linker flag added by swift driver
+ // rdar://problem/20108072
+ if ( !fObjcCategoryMerging )
+ linkCommand.push_back("-no_objc_category_merging");
+ return linkCommand;
+}
//
// Process all command line arguments.
//
void Options::parse(int argc, const char* argv[])
{
+ // Store the original args in the link snapshot.
+ fLinkSnapshot.recordRawArgs(argc, argv);
+
// pass one builds search list from -L and -F options
this->buildSearchPaths(argc, argv);
const char* arg = argv[i];
if ( arg[0] == '-' ) {
+ // by default, copy one arg to the snapshot link command, and do no file copying
+ int snapshotArgIndex = i;
+ int snapshotArgCount = -1; // -1 means compute count based on change in index
+ int snapshotFileArgIndex = -1; // -1 means no data file parameter to arg
// Since we don't care about the files passed, just the option names, we do this here.
if (fPrintOptions)
fprintf (stderr, "[Logging ld64 options]\t%s\n", arg);
if ( (arg[1] == 'L') || (arg[1] == 'F') ) {
+ snapshotArgCount = 0; // stripped out of link snapshot
+ if (arg[2] == '\0')
+ ++i;
// previously handled by buildSearchPaths()
}
// The one gnu style option we have to keep compatibility
// default
}
else if ( strcmp(arg, "-static") == 0 ) {
- fReaderOptions.fForStatic = true;
- if ( fOutputKind != kObjectFile ) {
+ fForStatic = true;
+ if ( (fOutputKind != kObjectFile) && (fOutputKind != kKextBundle) ) {
fOutputKind = kStaticExecutable;
}
+ cannotBeUsedWithBitcode(arg);
}
else if ( strcmp(arg, "-dylib") == 0 ) {
fOutputKind = kDynamicLibrary;
}
else if ( strcmp(arg, "-bundle") == 0 ) {
fOutputKind = kDynamicBundle;
+ cannotBeUsedWithBitcode(arg);
}
else if ( strcmp(arg, "-dylinker") == 0 ) {
fOutputKind = kDyld;
+ cannotBeUsedWithBitcode(arg);
}
else if ( strcmp(arg, "-execute") == 0 ) {
if ( fOutputKind != kStaticExecutable )
}
else if ( strcmp(arg, "-preload") == 0 ) {
fOutputKind = kPreload;
+ cannotBeUsedWithBitcode(arg);
}
else if ( strcmp(arg, "-r") == 0 ) {
fOutputKind = kObjectFile;
}
else if ( strcmp(arg, "-kext") == 0 ) {
fOutputKind = kKextBundle;
+ cannotBeUsedWithBitcode(arg);
}
else if ( strcmp(arg, "-o") == 0 ) {
+ snapshotArgCount = 0;
fOutputFile = argv[++i];
+ fLinkSnapshot.setSnapshotName(fOutputFile);
+ }
+ else if ( strncmp(arg, "-lazy-l", 7) == 0 ) {
+ snapshotArgCount = 0;
+ FileInfo info = findLibrary(&arg[7], true);
+ info.options.fLazyLoad = true;
+ info.ordinal = ld::File::Ordinal::makeArgOrdinal((uint16_t)i);
+ addLibrary(info);
+ fUsingLazyDylibLinking = true;
+ cannotBeUsedWithBitcode(arg);
+ }
+ else if ( strcmp(arg, "-lto_library") == 0 ) {
+ snapshotFileArgIndex = 1;
+ fOverridePathlibLTO = argv[++i];
+ if ( fOverridePathlibLTO == NULL )
+ throw "missing argument to -lto_library";
+ }
+ else if ( strcmp(arg, "-cache_path_lto") == 0 ) {
+ fLtoCachePath = argv[++i];
+ if ( fLtoCachePath == NULL )
+ throw "missing argument to -cache_path_lto";
+ }
+ else if ( strcmp(arg, "-prune_interval_lto") == 0 ) {
+ const char* value = argv[++i];
+ if ( value == NULL )
+ throw "missing argument to -prune_interval_lto";
+ char* endptr;
+ fLtoPruneInterval = strtoul(value, &endptr, 10);
+ if ( *endptr != '\0')
+ throw "invalid argument for -prune_interval_lto";
+ }
+ else if ( strcmp(arg, "-prune_after_lto") == 0 ) {
+ const char* value = argv[++i];
+ if ( value == NULL )
+ throw "missing argument to -prune_after_lto";
+ char* endptr;
+ fLtoPruneAfter = strtoul(value, &endptr, 10);
+ if ( *endptr != '\0')
+ throw "invalid argument for -prune_after_lto";
+ }
+ else if ( strcmp(arg, "-max_relative_cache_size_lto") == 0 ) {
+ const char* value = argv[++i];
+ if ( value == NULL )
+ throw "missing argument to -max_relative_cache_size_lto";
+ char* endptr;
+ fLtoMaxCacheSize = strtoul(value, &endptr, 10);
+ if ( *endptr != '\0')
+ throw "invalid argument for -max_relative_cache_size_lto";
+ if (fLtoMaxCacheSize > 100)
+ throw "Expect a value between 0 and 100 for -max_relative_cache_size_lto";
}
else if ( (arg[1] == 'l') && (strncmp(arg,"-lazy_",6) !=0) ) {
- addLibrary(findLibrary(&arg[2]));
+ snapshotArgCount = 0;
+ FileInfo info = findLibrary(&arg[2]);
+ info.ordinal = ld::File::Ordinal::makeArgOrdinal((uint16_t)i);
+ addLibrary(info);
}
// This causes a dylib to be weakly bound at
// link time. This corresponds to weak_import.
else if ( strncmp(arg, "-weak-l", 7) == 0 ) {
+ // SNAPSHOT FIXME: what should we do for link snapshots? (ignore for now)
+ snapshotArgCount = 0;
FileInfo info = findLibrary(&arg[7]);
info.options.fWeakImport = true;
+ info.ordinal = ld::File::Ordinal::makeArgOrdinal((uint16_t)i);
addLibrary(info);
}
- else if ( strncmp(arg, "-lazy-l", 7) == 0 ) {
- FileInfo info = findLibrary(&arg[7], true);
- info.options.fLazyLoad = true;
- addLibrary(info);
- fUsingLazyDylibLinking = true;
- }
// Avoid lazy binding.
- // ??? Deprecate.
else if ( strcmp(arg, "-bind_at_load") == 0 ) {
fBindAtLoad = true;
+ cannotBeUsedWithBitcode(arg);
}
else if ( strcmp(arg, "-twolevel_namespace") == 0 ) {
fNameSpace = kTwoLevelNameSpace;
}
else if ( strcmp(arg, "-flat_namespace") == 0 ) {
fNameSpace = kFlatNameSpace;
+ cannotBeUsedWithBitcode(arg);
}
// Also sets a bit to ensure dyld causes everything
// in the namespace to be flat.
// ??? Deprecate
else if ( strcmp(arg, "-force_flat_namespace") == 0 ) {
fNameSpace = kForceFlatNameSpace;
+ cannotBeUsedWithBitcode(arg);
}
// Similar to --whole-archive.
else if ( strcmp(arg, "-all_load") == 0 ) {
- fReaderOptions.fFullyLoadArchives = true;
+ fFullyLoadArchives = true;
}
else if ( strcmp(arg, "-noall_load") == 0) {
warnObsolete(arg);
}
// Similar to -all_load
else if ( strcmp(arg, "-ObjC") == 0 ) {
- fReaderOptions.fLoadAllObjcObjectsFromArchives = true;
+ fLoadAllObjcObjectsFromArchives = true;
}
// Similar to -all_load, but for the following archive only.
else if ( strcmp(arg, "-force_load") == 0 ) {
FileInfo info = findFile(argv[++i]);
info.options.fForceLoad = true;
+ info.ordinal = ld::File::Ordinal::makeArgOrdinal((uint16_t)i);
addLibrary(info);
}
// Library versioning.
const char* vers = argv[++i];
if ( vers == NULL )
throw "-dylib_compatibility_version missing <version>";
- fDylibCompatVersion = parseVersionNumber(vers);
+ fDylibCompatVersion = parseVersionNumber32(vers);
}
else if ( (strcmp(arg, "-dylib_current_version") == 0)
|| (strcmp(arg, "-current_version") == 0)) {
const char* vers = argv[++i];
if ( vers == NULL )
throw "-dylib_current_version missing <version>";
- fDylibCurrentVersion = parseVersionNumber(vers);
+ fDylibCurrentVersion = parseVersionNumber64(vers);
}
else if ( strcmp(arg, "-sectorder") == 0 ) {
if ( (argv[i+1]==NULL) || (argv[i+2]==NULL) || (argv[i+3]==NULL) )
throw "-sectorder missing <segment> <section> <file-path>";
+ snapshotFileArgIndex = 3;
parseSectionOrderFile(argv[i+1], argv[i+2], argv[i+3]);
i += 3;
+ cannotBeUsedWithBitcode(arg);
}
else if ( strcmp(arg, "-order_file") == 0 ) {
+ snapshotFileArgIndex = 1;
parseOrderFile(argv[++i], false);
}
else if ( strcmp(arg, "-order_file_statistics") == 0 ) {
fPrintOrderFileStatistics = true;
+ cannotBeUsedWithBitcode(arg);
}
// ??? Deprecate segcreate.
// -sectcreate puts whole files into a section in the output.
else if ( (strcmp(arg, "-sectcreate") == 0) || (strcmp(arg, "-segcreate") == 0) ) {
if ( (argv[i+1]==NULL) || (argv[i+2]==NULL) || (argv[i+3]==NULL) )
throw "-sectcreate missing <segment> <section> <file-path>";
+ snapshotFileArgIndex = 3;
addSection(argv[i+1], argv[i+2], argv[i+3]);
i += 3;
}
|| (strcmp(arg, "-dylinker_install_name") == 0)
|| (strcmp(arg, "-install_name") == 0)) {
fDylibInstallName = argv[++i];
- if ( fDylibInstallName == NULL )
+ if ( fDylibInstallName == NULL )
throw "-install_name missing <path>";
}
// Sets the base address of the output.
warning("-seg1addr not %lld byte aligned, rounding up", fSegmentAlignment);
fBaseAddress = temp;
}
+ cannotBeUsedWithBitcode(arg);
}
else if ( strcmp(arg, "-e") == 0 ) {
fEntryName = argv[++i];
}
// Same as -@ from the FSF linker.
else if ( strcmp(arg, "-filelist") == 0 ) {
+ snapshotArgCount = 0;
const char* path = argv[++i];
if ( (path == NULL) || (path[0] == '-') )
throw "-filelist missing <path>";
- loadFileList(path);
+ ld::File::Ordinal baseOrdinal = ld::File::Ordinal::makeArgOrdinal((uint16_t)i);
+ loadFileList(path, baseOrdinal);
}
else if ( strcmp(arg, "-keep_private_externs") == 0 ) {
- fKeepPrivateExterns = true;
+ cannotBeUsedWithBitcode(arg);
+ fKeepPrivateExterns = true;
}
else if ( strcmp(arg, "-final_output") == 0 ) {
fFinalName = argv[++i];
// do nothing, -interposable_list overrides -interposable"
break;
}
+ cannotBeUsedWithBitcode(arg);
}
else if ( strcmp(arg, "-interposable_list") == 0 ) {
+ snapshotFileArgIndex = 1;
fInterposeMode = kInterposeSome;
loadExportFile(argv[++i], "-interposable_list", fInterposeList);
+ cannotBeUsedWithBitcode(arg);
}
// Default for -interposable/-multi_module/-single_module.
else if ( strcmp(arg, "-single_module") == 0 ) {
fInterposeMode = kInterposeNone;
}
else if ( strcmp(arg, "-exported_symbols_list") == 0 ) {
+ snapshotFileArgIndex = 1;
if ( fExportMode == kDontExportSome )
throw "can't use -exported_symbols_list and -unexported_symbols_list";
fExportMode = kExportSome;
loadExportFile(argv[++i], "-exported_symbols_list", fExportSymbols);
}
else if ( strcmp(arg, "-unexported_symbols_list") == 0 ) {
+ snapshotFileArgIndex = 1;
if ( fExportMode == kExportSome )
throw "can't use -unexported_symbols_list and -exported_symbols_list";
fExportMode = kDontExportSome;
fDontExportSymbols.insert(argv[++i]);
}
else if ( strcmp(arg, "-non_global_symbols_no_strip_list") == 0 ) {
+ snapshotFileArgIndex = 1;
if ( fLocalSymbolHandling == kLocalSymbolsSelectiveExclude )
throw "can't use -non_global_symbols_no_strip_list and -non_global_symbols_strip_list";
fLocalSymbolHandling = kLocalSymbolsSelectiveInclude;
loadExportFile(argv[++i], "-non_global_symbols_no_strip_list", fLocalSymbolsIncluded);
+ cannotBeUsedWithBitcode(arg);
}
else if ( strcmp(arg, "-non_global_symbols_strip_list") == 0 ) {
+ snapshotFileArgIndex = 1;
if ( fLocalSymbolHandling == kLocalSymbolsSelectiveInclude )
throw "can't use -non_global_symbols_no_strip_list and -non_global_symbols_strip_list";
fLocalSymbolHandling = kLocalSymbolsSelectiveExclude;
loadExportFile(argv[++i], "-non_global_symbols_strip_list", fLocalSymbolsExcluded);
+ cannotBeUsedWithBitcode(arg);
}
// ??? Deprecate
else if ( strcmp(arg, "-no_arch_warnings") == 0 ) {
fIgnoreOtherArchFiles = true;
}
else if ( strcmp(arg, "-force_cpusubtype_ALL") == 0 ) {
- fForceSubtypeAll = true;
+ fForceSubtypeAll = true;
+ fAllowCpuSubtypeMismatches = true;
+ cannotBeUsedWithBitcode(arg);
}
// Similar to -weak-l but uses the absolute path name to the library.
else if ( strcmp(arg, "-weak_library") == 0 ) {
+ // SNAPSHOT FIXME: what should we do for link snapshots? (ignore for now)
+ snapshotArgCount = 0;
FileInfo info = findFile(argv[++i]);
info.options.fWeakImport = true;
+ info.ordinal = ld::File::Ordinal::makeArgOrdinal((uint16_t)i);
addLibrary(info);
+ cannotBeUsedWithBitcode(arg);
}
else if ( strcmp(arg, "-lazy_library") == 0 ) {
+ // SNAPSHOT FIXME: what should we do for link snapshots? (ignore for now)
+ snapshotArgCount = 0;
FileInfo info = findFile(argv[++i]);
info.options.fLazyLoad = true;
+ info.ordinal = ld::File::Ordinal::makeArgOrdinal((uint16_t)i);
addLibrary(info);
fUsingLazyDylibLinking = true;
+ cannotBeUsedWithBitcode(arg);
}
else if ( strcmp(arg, "-framework") == 0 ) {
- addLibrary(findFramework(argv[++i]));
+ snapshotArgCount = 0;
+ FileInfo info = findFramework(argv[++i]);
+ info.ordinal = ld::File::Ordinal::makeArgOrdinal((uint16_t)i);
+ addLibrary(info);
}
else if ( strcmp(arg, "-weak_framework") == 0 ) {
+ // SNAPSHOT FIXME: what should we do for link snapshots? (ignore for now)
+ snapshotArgCount = 0;
FileInfo info = findFramework(argv[++i]);
info.options.fWeakImport = true;
+ info.ordinal = ld::File::Ordinal::makeArgOrdinal((uint16_t)i);
addLibrary(info);
}
else if ( strcmp(arg, "-lazy_framework") == 0 ) {
+ // SNAPSHOT FIXME: what should we do for link snapshots? (ignore for now)
+ snapshotArgCount = 0;
FileInfo info = findFramework(argv[++i]);
info.options.fLazyLoad = true;
+ info.ordinal = ld::File::Ordinal::makeArgOrdinal((uint16_t)i);
addLibrary(info);
fUsingLazyDylibLinking = true;
+ cannotBeUsedWithBitcode(arg);
}
else if ( strcmp(arg, "-search_paths_first") == 0 ) {
// previously handled by buildSearchPaths()
}
+ else if ( strcmp(arg, "-search_dylibs_first") == 0 ) {
+ // previously handled by buildSearchPaths()
+ }
else if ( strcmp(arg, "-undefined") == 0 ) {
- setUndefinedTreatment(argv[++i]);
+ setUndefinedTreatment(argv[++i]);
+ cannotBeUsedWithBitcode(arg);
}
// Debugging output flag.
else if ( strcmp(arg, "-arch_multiple") == 0 ) {
case kWarning:
fWarnTextRelocs = true;
fAllowTextRelocs = true;
+ cannotBeUsedWithBitcode(arg);
break;
case kSuppress:
fWarnTextRelocs = false;
fAllowTextRelocs = true;
+ cannotBeUsedWithBitcode(arg);
break;
case kError:
fWarnTextRelocs = false;
// Warn, error or make strong a mismatch between weak
// and non-weak references.
else if ( strcmp(arg, "-weak_reference_mismatches") == 0 ) {
- setWeakReferenceMismatchTreatment(argv[++i]);
+ setWeakReferenceMismatchTreatment(argv[++i]);
}
// For a deployment target of 10.3 and earlier ld64 will
// prebind an executable with 0s in all addresses that
// later. Prebinding is less useful on 10.4 and greater.
else if ( strcmp(arg, "-prebind") == 0 ) {
fPrebind = true;
+ cannotBeUsedWithBitcode(arg);
}
else if ( strcmp(arg, "-noprebind") == 0 ) {
warnObsolete(arg);
// This should probably be deprecated when we respect -L and -F
// when searching for libraries.
else if ( strcmp(arg, "-dylib_file") == 0 ) {
+ // ignore for snapshot because a stub dylib will be created in the snapshot
+ snapshotArgCount = 0;
addDylibOverride(argv[++i]);
+ cannotBeUsedWithBitcode(arg);
}
// What to expand @executable_path to if found in dependent dylibs
else if ( strcmp(arg, "-executable_path") == 0 ) {
warning("alignment for -segalign %s is not a power of two, using 0x%X", size, p2aligned);
fSegmentAlignment = p2aligned;
}
+ cannotBeUsedWithBitcode(arg);
}
// Puts a specified segment at a particular address that must
// be a multiple of the segment alignment.
if ( (seg.name == NULL) || (argv[i+1] == NULL) )
throw "-segaddr missing segName Adddress";
seg.address = parseAddress(argv[++i]);
- uint64_t temp = seg.address & (-4096); // page align
- if ( (seg.address != temp) )
- warning("-segaddr %s not page aligned, rounding down", seg.name);
+ uint64_t temp = ((seg.address+fSegmentAlignment-1) & (-fSegmentAlignment));
+ if ( seg.address != temp )
+ warning("-segaddr %s not %lld byte aligned", seg.name, fSegmentAlignment);
fCustomSegmentAddresses.push_back(seg);
+ cannotBeUsedWithBitcode(arg);
}
// ??? Deprecate when we deprecate split-seg.
else if ( strcmp(arg, "-segs_read_only_addr") == 0 ) {
fBaseAddress = parseAddress(argv[++i]);
+ cannotBeUsedWithBitcode(arg);
}
// ??? Deprecate when we deprecate split-seg.
else if ( strcmp(arg, "-segs_read_write_addr") == 0 ) {
fBaseWritableAddress = parseAddress(argv[++i]);
fSplitSegs = true;
+ cannotBeUsedWithBitcode(arg);
}
// ??? Deprecate when we get rid of basing at build time.
else if ( strcmp(arg, "-seg_addr_table") == 0 ) {
+ snapshotFileArgIndex = 1;
const char* name = argv[++i];
if ( name == NULL )
throw "-seg_addr_table missing argument";
fSegAddrTablePath = name;
+ cannotBeUsedWithBitcode(arg);
}
else if ( strcmp(arg, "-seg_addr_table_filename") == 0 ) {
warnObsolete(arg);
throw "-segprot missing segName max-prot init-prot";
seg.max = parseProtection(argv[++i]);
seg.init = parseProtection(argv[++i]);
- fCustomSegmentProtections.push_back(seg);
+ if ( strcmp(seg.name, "__LINKEDIT") == 0 )
+ warning("-segprot cannot be used to modify __LINKEDIT protections");
+ else
+ fCustomSegmentProtections.push_back(seg);
+ cannotBeUsedWithBitcode(arg);
}
else if ( strcmp(arg, "-pagezero_size") == 0 ) {
const char* size = argv[++i];
if ( (fZeroPageSize != temp) )
warning("-pagezero_size not page aligned, rounding down");
fZeroPageSize = temp;
+ cannotBeUsedWithBitcode(arg);
}
else if ( strcmp(arg, "-stack_addr") == 0 ) {
const char* address = argv[++i];
if ( address == NULL )
throw "-stack_addr missing <address>";
fStackAddr = parseAddress(address);
+ cannotBeUsedWithBitcode(arg);
}
else if ( strcmp(arg, "-stack_size") == 0 ) {
const char* size = argv[++i];
if ( size == NULL )
throw "-stack_size missing <address>";
fStackSize = parseAddress(size);
- uint64_t temp = fStackSize & (-4096); // page align
- if ( (fStackSize != temp) )
- warning("-stack_size not page aligned, rounding down");
}
else if ( strcmp(arg, "-allow_stack_execute") == 0 ) {
fExecutableStack = true;
+ cannotBeUsedWithBitcode(arg);
+ }
+ else if ( strcmp(arg, "-allow_heap_execute") == 0 ) {
+ fDisableNonExecutableHeap = true;
+ cannotBeUsedWithBitcode(arg);
}
else if ( strcmp(arg, "-sectalign") == 0 ) {
if ( (argv[i+1]==NULL) || (argv[i+2]==NULL) || (argv[i+3]==NULL) )
throw "-sectalign missing <segment> <section> <file-path>";
addSectionAlignment(argv[i+1], argv[i+2], argv[i+3]);
i += 3;
+ cannotBeUsedWithBitcode(arg);
}
else if ( strcmp(arg, "-sectorder_detail") == 0 ) {
warnObsolete(arg);
i += 2;
}
else if ( strcmp(arg, "-bundle_loader") == 0 ) {
+ snapshotFileArgIndex = 1;
fBundleLoader = argv[++i];
if ( (fBundleLoader == NULL) || (fBundleLoader[0] == '-') )
throw "-bundle_loader missing <path>";
FileInfo info = findFile(fBundleLoader);
+ info.ordinal = ld::File::Ordinal::makeArgOrdinal((uint16_t)i);
info.options.fBundleLoader = true;
fInputFiles.push_back(info);
}
}
// Use this flag to set default behavior for deployement targets.
else if ( strcmp(arg, "-macosx_version_min") == 0 ) {
- setMacOSXVersionMin(argv[++i]);
- }
- else if ( strcmp(arg, "-iphoneos_version_min") == 0 ) {
- setIPhoneVersionMin(argv[++i]);
+ const char* macVers = argv[++i];
+ if ( macVers == NULL )
+ throw "-macosx_version_min missing version argument";
+ const char* envMacVers = getenv("MACOSX_DEPLOYMENT_TARGET");
+ const char* enviPhoneVers = getenv("IPHONEOS_DEPLOYMENT_TARGET");
+ if ( (envMacVers != NULL) && (enviPhoneVers != NULL) ) {
+ // <rdar://problem/13774329> when conflicting deployments set, break tie by looking at syslibroot
+ warning("both MACOSX_DEPLOYMENT_TARGET and IPHONEOS_DEPLOYMENT_TARGET are set");
+ if ( !fSDKPaths.empty() ) {
+ const char* sysrootPath = fSDKPaths.back();
+ const char* lastSlash = strrchr(sysrootPath, '/');
+ if ( strstr(lastSlash, "Simulator") != NULL )
+ setIOSVersionMin(enviPhoneVers);
+ else
+ setMacOSXVersionMin(macVers);
+ }
+ else {
+ setMacOSXVersionMin(macVers);
+ }
+ }
+ else {
+ setMacOSXVersionMin(macVers);
+ }
}
+ else if ( (strcmp(arg, "-ios_version_min") == 0) || (strcmp(arg, "-iphoneos_version_min") == 0) ) {
+ const char* vers = argv[++i];
+ if ( vers == NULL )
+ throw "-ios_version_min missing version argument";
+ setIOSVersionMin(vers);
+ }
+ else if ( strcmp(arg, "-ios_simulator_version_min") == 0 ) {
+ const char* vers = argv[++i];
+ if ( vers == NULL )
+ throw "-ios_simulator_version_min missing version argument";
+ setIOSVersionMin(vers);
+ fTargetIOSSimulator = true;
+ }
+ else if ( strcmp(arg, "-watchos_version_min") == 0 ) {
+ const char* vers = argv[++i];
+ if ( vers == NULL )
+ throw "-watchos_version_min missing version argument";
+ setWatchOSVersionMin(vers);
+ }
+ else if ( strcmp(arg, "-watchos_simulator_version_min") == 0 ) {
+ const char* vers = argv[++i];
+ if ( vers == NULL )
+ throw "-watchos_simulator_version_min missing version argument";
+ setWatchOSVersionMin(vers);
+ fTargetIOSSimulator = true;
+ }
+ #if SUPPORT_APPLE_TV
+ else if ( strcmp(arg, "-tvos_version_min") == 0 ) {
+ const char* vers = argv[++i];
+ if ( vers == NULL )
+ throw "-tvos_version_min missing version argument";
+ setIOSVersionMin(vers);
+ fPlatform = kPlatform_tvOS;
+ }
+ else if ( strcmp(arg, "-tvos_simulator_version_min") == 0 ) {
+ const char* vers = argv[++i];
+ if ( vers == NULL )
+ throw "-tvos_simulator_version_min missing version argument";
+ setIOSVersionMin(vers);
+ fPlatform = kPlatform_tvOS;
+ fTargetIOSSimulator = true;
+ }
+ #endif
else if ( strcmp(arg, "-multiply_defined") == 0 ) {
//warnObsolete(arg);
++i;
warnObsolete(arg);
}
else if ( (strcmp(arg, "-why_load") == 0) || (strcmp(arg, "-whyload") == 0) ) {
- fReaderOptions.fWhyLoad = true;
+ fWhyLoad = true;
}
else if ( strcmp(arg, "-why_live") == 0 ) {
const char* name = argv[++i];
if ( name == NULL )
throw "-u missing argument";
fInitialUndefines.push_back(name);
+ cannotBeUsedWithBitcode(arg);
}
else if ( strcmp(arg, "-U") == 0 ) {
const char* name = argv[++i];
if ( name == NULL )
throw "-U missing argument";
fAllowedUndefined.insert(name);
+ cannotBeUsedWithBitcode(arg);
}
else if ( strcmp(arg, "-s") == 0 ) {
warnObsolete(arg);
fLocalSymbolHandling = kLocalSymbolsNone;
- fReaderOptions.fDebugInfoStripping = ObjectFile::ReaderOptions::kDebugInfoNone;
+ fDebugInfoStripping = Options::kDebugInfoNone;
}
else if ( strcmp(arg, "-x") == 0 ) {
fLocalSymbolHandling = kLocalSymbolsNone;
}
else if ( strcmp(arg, "-S") == 0 ) {
- fReaderOptions.fDebugInfoStripping = ObjectFile::ReaderOptions::kDebugInfoNone;
+ fDebugInfoStripping = Options::kDebugInfoNone;
}
else if ( strcmp(arg, "-X") == 0 ) {
warnObsolete(arg);
}
else if ( strcmp(arg, "-Si") == 0 ) {
warnObsolete(arg);
- fReaderOptions.fDebugInfoStripping = ObjectFile::ReaderOptions::kDebugInfoFull;
+ fDebugInfoStripping = Options::kDebugInfoFull;
}
else if ( strcmp(arg, "-b") == 0 ) {
warnObsolete(arg);
}
else if ( strcmp(arg, "-Sn") == 0 ) {
warnObsolete(arg);
- fReaderOptions.fDebugInfoStripping = ObjectFile::ReaderOptions::kDebugInfoFull;
+ fDebugInfoStripping = Options::kDebugInfoFull;
}
else if ( strcmp(arg, "-Sp") == 0 ) {
warnObsolete(arg);
}
else if ( strcmp(arg, "-dead_strip") == 0 ) {
- fDeadStrip = kDeadStripOnPlusUnusedInits;
+ fDeadStrip = true;
}
else if ( strcmp(arg, "-no_dead_strip_inits_and_terms") == 0 ) {
- fDeadStrip = kDeadStripOn;
+ fDeadStrip = true;
}
else if ( strcmp(arg, "-w") == 0 ) {
// previously handled by buildSearchPaths()
}
- else if ( strcmp(arg, "-arch_errors_fatal") == 0 ) {
+ else if ( strcmp(arg, "-fatal_warnings") == 0 ) {
+ // previously handled by buildSearchPaths()
+ }
+ else if ( strcmp(arg, "-arch_errors_fatal") == 0 ) {
fErrorOnOtherArchFiles = true;
}
else if ( strcmp(arg, "-M") == 0 ) {
if ( size == NULL )
throw "-headerpad missing argument";
fMinimumHeaderPad = parseAddress(size);
+ cannotBeUsedWithBitcode(arg);
}
else if ( strcmp(arg, "-headerpad_max_install_names") == 0 ) {
- fMaxMinimumHeaderPad = true;
+ // ignore -headerpad_max_install_names when compiling with bitcode
+ // rdar://problem/20748962
+ if ( fBundleBitcode )
+ warning("-headerpad_max_install_names is ignored when used with -bitcode_bundle (Xcode setting ENABLE_BITCODE=YES)");
+ else
+ fMaxMinimumHeaderPad = true;
}
else if ( strcmp(arg, "-t") == 0 ) {
- fReaderOptions.fLogAllFiles = true;
+ fLogAllFiles = true;
}
else if ( strcmp(arg, "-whatsloaded") == 0 ) {
- fReaderOptions.fLogObjectFiles = true;
+ fLogObjectFiles = true;
}
else if ( strcmp(arg, "-A") == 0 ) {
warnObsolete(arg);
if ( name == NULL )
throw "-umbrella missing argument";
fUmbrellaName = name;
+ cannotBeUsedWithBitcode(arg);
}
else if ( strcmp(arg, "-allowable_client") == 0 ) {
const char* name = argv[++i];
throw "-allowable_client missing argument";
fAllowableClients.push_back(name);
+ cannotBeUsedWithBitcode(arg);
}
else if ( strcmp(arg, "-client_name") == 0 ) {
const char* name = argv[++i];
throw "-client_name missing argument";
fClientName = name;
+ cannotBeUsedWithBitcode(arg);
}
else if ( strcmp(arg, "-sub_umbrella") == 0 ) {
const char* name = argv[++i];
if ( name == NULL )
throw "-sub_umbrella missing argument";
fSubUmbellas.push_back(name);
+ cannotBeUsedWithBitcode(arg);
}
else if ( strcmp(arg, "-sub_library") == 0 ) {
const char* name = argv[++i];
if ( name == NULL )
throw "-sub_library missing argument";
fSubLibraries.push_back(name);
+ cannotBeUsedWithBitcode(arg);
}
else if ( strcmp(arg, "-init") == 0 ) {
const char* name = argv[++i];
if ( name == NULL )
throw "-init missing argument";
fInitFunctionName = name;
+ cannotBeUsedWithBitcode(arg);
}
else if ( strcmp(arg, "-dot") == 0 ) {
const char* name = argv[++i];
if ( name == NULL )
throw "-dot missing argument";
fDotOutputFile = name;
+ cannotBeUsedWithBitcode(arg);
}
else if ( strcmp(arg, "-warn_commons") == 0 ) {
fWarnCommons = true;
fStatistics = true;
}
else if ( strcmp(arg, "-d") == 0 ) {
- fReaderOptions.fMakeTentativeDefinitionsReal = true;
+ fMakeTentativeDefinitionsReal = true;
}
else if ( strcmp(arg, "-v") == 0 ) {
// previously handled by buildSearchPaths()
// previously handled by buildSearchPaths()
}
else if ( strcmp(arg, "-syslibroot") == 0 ) {
+ snapshotArgCount = 0;
++i;
// previously handled by buildSearchPaths()
}
+ else if ( strcmp(arg, "-bitcode_bundle") == 0 ) {
+ snapshotArgCount = 0;
+ // previously handled by buildSearchPaths()
+ }
else if ( strcmp(arg, "-no_uuid") == 0 ) {
fUUIDMode = kUUIDNone;
+ cannotBeUsedWithBitcode(arg);
}
else if ( strcmp(arg, "-random_uuid") == 0 ) {
fUUIDMode = kUUIDRandom;
+ cannotBeUsedWithBitcode(arg);
}
else if ( strcmp(arg, "-dtrace") == 0 ) {
+ snapshotFileArgIndex = 1;
const char* name = argv[++i];
if ( name == NULL )
throw "-dtrace missing argument";
fDtraceScriptName = name;
+ cannotBeUsedWithBitcode(arg);
}
else if ( strcmp(arg, "-root_safe") == 0 ) {
- fReaderOptions.fRootSafe = true;
+ fRootSafe = true;
}
else if ( strcmp(arg, "-setuid_safe") == 0 ) {
- fReaderOptions.fSetuidSafe = true;
+ fSetuidSafe = true;
}
else if ( strcmp(arg, "-alias") == 0 ) {
- ObjectFile::ReaderOptions::AliasPair pair;
+ Options::AliasPair pair;
pair.realName = argv[++i];
if ( pair.realName == NULL )
throw "missing argument to -alias";
pair.alias = argv[++i];
if ( pair.alias == NULL )
throw "missing argument to -alias";
- fReaderOptions.fAliases.push_back(pair);
+ fAliases.push_back(pair);
+ cannotBeUsedWithBitcode(arg);
}
else if ( strcmp(arg, "-alias_list") == 0 ) {
+ snapshotFileArgIndex = 1;
parseAliasFile(argv[++i]);
- }
- // put this last so that it does not interfer with other options starting with 'i'
- else if ( strncmp(arg, "-i", 2) == 0 ) {
- const char* colon = strchr(arg, ':');
- if ( colon == NULL )
- throwf("unknown option: %s", arg);
- ObjectFile::ReaderOptions::AliasPair pair;
- char* temp = new char[colon-arg];
- strlcpy(temp, &arg[2], colon-arg-1);
- pair.realName = &colon[1];
- pair.alias = temp;
- fReaderOptions.fAliases.push_back(pair);
+ cannotBeUsedWithBitcode(arg);
}
else if ( strcmp(arg, "-save-temps") == 0 ) {
fSaveTempFiles = true;
}
+ else if ( strcmp(arg, "-bitcode_hide_symbols") == 0 ) {
+ fHideSymbols = true;
+ }
+ else if ( strcmp(arg, "-bitcode_verify") == 0 ) {
+ fVerifyBitcode = true;
+ }
+ else if ( strcmp(arg, "-bitcode_symbol_map") == 0) {
+ fReverseMapPath = argv[++i];
+ if ( fReverseMapPath == NULL )
+ throw "missing argument to -bitcode_symbol_map";
+ struct stat statbuf;
+ ::stat(fReverseMapPath, &statbuf);
+ if (S_ISDIR(statbuf.st_mode)) {
+ char tempPath[PATH_MAX];
+ sprintf(tempPath, "%s/XXXXXX", fReverseMapPath);
+ int tempFile = ::mkstemp(tempPath);
+ if (tempFile == -1)
+ throwf("could not write file to symbol map directory: %s", fReverseMapPath);
+ ::close(tempFile);
+ fReverseMapTempPath = std::string(tempPath);
+ fReverseMapUUIDRename = true;
+ } else
+ fReverseMapTempPath = std::string(fReverseMapPath);
+ }
+ else if ( strcmp(argv[i], "-flto-codegen-only") == 0) {
+ fLTOCodegenOnly = true;
+ }
+ else if ( strcmp(argv[i], "-ignore_auto_link") == 0) {
+ fIgnoreAutoLink = true;
+ }
+ else if ( strcmp(argv[i], "-allow_dead_duplicates") == 0) {
+ fAllowDeadDups = true;
+ }
+ else if ( strcmp(argv[i], "-bitcode_process_mode") == 0 ) {
+ const char* bitcode_type = argv[++i];
+ if ( bitcode_type == NULL )
+ throw "missing argument to -bitcode_process_mode";
+ else if ( strcmp(bitcode_type, "strip") == 0 )
+ fBitcodeKind = kBitcodeStrip;
+ else if ( strcmp(bitcode_type, "marker") == 0 )
+ fBitcodeKind = kBitcodeMarker;
+ else if ( strcmp(bitcode_type, "data") == 0 )
+ fBitcodeKind = kBitcodeAsData;
+ else if ( strcmp(bitcode_type, "bitcode") == 0 )
+ fBitcodeKind = kBitcodeProcess;
+ else
+ throw "unknown argument to -bitcode_process_mode {strip,marker,data,bitcode}";
+ }
else if ( strcmp(arg, "-rpath") == 0 ) {
const char* path = argv[++i];
if ( path == NULL )
}
else if ( strcmp(arg, "-pie") == 0 ) {
fPositionIndependentExecutable = true;
+ fPIEOnCommandLine = true;
+ }
+ else if ( strcmp(arg, "-no_pie") == 0 ) {
+ fDisablePositionIndependentExecutable = true;
+ cannotBeUsedWithBitcode(arg);
}
else if ( strncmp(arg, "-reexport-l", 11) == 0 ) {
+ // SNAPSHOT FIXME: what should we do for link snapshots? (ignore for now)
+ snapshotArgCount = 0;
FileInfo info = findLibrary(&arg[11], true);
info.options.fReExport = true;
+ info.ordinal = ld::File::Ordinal::makeArgOrdinal((uint16_t)i);
addLibrary(info);
+ cannotBeUsedWithBitcode(arg);
}
else if ( strcmp(arg, "-reexport_library") == 0 ) {
+ // SNAPSHOT FIXME: what should we do for link snapshots? (ignore for now)
+ snapshotArgCount = 0;
FileInfo info = findFile(argv[++i]);
info.options.fReExport = true;
+ info.ordinal = ld::File::Ordinal::makeArgOrdinal((uint16_t)i);
addLibrary(info);
+ cannotBeUsedWithBitcode(arg);
}
else if ( strcmp(arg, "-reexport_framework") == 0 ) {
+ // SNAPSHOT FIXME: what should we do for link snapshots? (ignore for now)
+ snapshotArgCount = 0;
FileInfo info = findFramework(argv[++i]);
info.options.fReExport = true;
+ info.ordinal = ld::File::Ordinal::makeArgOrdinal((uint16_t)i);
+ addLibrary(info);
+ cannotBeUsedWithBitcode(arg);
+ }
+ else if ( strncmp(arg, "-upward-l", 9) == 0 ) {
+ // SNAPSHOT FIXME: what should we do for link snapshots? (ignore for now)
+ snapshotArgCount = 0;
+ FileInfo info = findLibrary(&arg[9], true);
+ info.options.fUpward = true;
+ info.ordinal = ld::File::Ordinal::makeArgOrdinal((uint16_t)i);
+ addLibrary(info);
+ cannotBeUsedWithBitcode(arg);
+ }
+ else if ( strcmp(arg, "-upward_library") == 0 ) {
+ // SNAPSHOT FIXME: what should we do for link snapshots? (ignore for now)
+ snapshotArgCount = 0;
+ FileInfo info = findFile(argv[++i]);
+ info.options.fUpward = true;
+ info.ordinal = ld::File::Ordinal::makeArgOrdinal((uint16_t)i);
+ addLibrary(info);
+ cannotBeUsedWithBitcode(arg);
+ }
+ else if ( strcmp(arg, "-upward_framework") == 0 ) {
+ // SNAPSHOT FIXME: what should we do for link snapshots? (ignore for now)
+ snapshotArgCount = 0;
+ FileInfo info = findFramework(argv[++i]);
+ info.options.fUpward = true;
+ info.ordinal = ld::File::Ordinal::makeArgOrdinal((uint16_t)i);
addLibrary(info);
+ cannotBeUsedWithBitcode(arg);
}
else if ( strcmp(arg, "-dead_strip_dylibs") == 0 ) {
fDeadStripDylibs = true;
+ cannotBeUsedWithBitcode(arg);
}
else if ( strcmp(arg, "-no_implicit_dylibs") == 0 ) {
- fReaderOptions.fImplicitlyLinkPublicDylibs = false;
+ fImplicitlyLinkPublicDylibs = false;
}
else if ( strcmp(arg, "-new_linker") == 0 ) {
// ignore
}
else if ( strcmp(arg, "-no_encryption") == 0 ) {
- fEncryptable = false;
+ fEncryptableForceOff = true;
+ cannotBeUsedWithBitcode(arg);
+ }
+ else if ( strcmp(arg, "-encryptable") == 0 ) {
+ fEncryptableForceOn = true;
+ cannotBeUsedWithBitcode(arg);
}
else if ( strcmp(arg, "-no_compact_unwind") == 0 ) {
- fReaderOptions.fAddCompactUnwindEncoding = false;
+ fAddCompactUnwindEncoding = false;
+ cannotBeUsedWithBitcode(arg);
}
else if ( strcmp(arg, "-mllvm") == 0 ) {
const char* opts = argv[++i];
if ( opts == NULL )
throw "missing argument to -mllvm";
fLLVMOptions.push_back(opts);
+ cannotBeUsedWithBitcode(arg);
+ }
+ else if ( strcmp(arg, "-mcpu") == 0 ) {
+ const char* cpu = argv[++i];
+ if ( cpu == NULL )
+ throw "missing argument to -mcpu";
+ fLtoCpu = cpu;
+ cannotBeUsedWithBitcode(arg);
}
else if ( strcmp(arg, "-no_order_inits") == 0 ) {
- fReaderOptions.fAutoOrderInitializers = false;
+ fAutoOrderInitializers = false;
+ cannotBeUsedWithBitcode(arg);
}
else if ( strcmp(arg, "-no_order_data") == 0 ) {
fOrderData = false;
+ cannotBeUsedWithBitcode(arg);
}
else if ( strcmp(arg, "-seg_page_size") == 0 ) {
SegmentSize seg;
if ( (seg.size != temp) )
warning("-seg_page_size %s not 4K aligned, rounding down", seg.name);
fCustomSegmentSizes.push_back(seg);
+ cannotBeUsedWithBitcode(arg);
}
else if ( strcmp(arg, "-mark_dead_strippable_dylib") == 0 ) {
fMarkDeadStrippableDylib = true;
+ cannotBeUsedWithBitcode(arg);
}
else if ( strcmp(arg, "-exported_symbols_order") == 0 ) {
+ snapshotFileArgIndex = 1;
loadSymbolOrderFile(argv[++i], fExportSymbolsOrder);
+ cannotBeUsedWithBitcode(arg);
}
else if ( strcmp(arg, "-no_compact_linkedit") == 0 ) {
- fMakeCompressedDyldInfo = false;
+ warnObsolete("-no_compact_linkedit");
}
else if ( strcmp(arg, "-no_eh_labels") == 0 ) {
- fReaderOptions.fNoEHLabels = true;
+ fNoEHLabels = true;
+ cannotBeUsedWithBitcode(arg);
}
else if ( strcmp(arg, "-warn_compact_unwind") == 0 ) {
- fReaderOptions.fWarnCompactUnwind = true;
+ fWarnCompactUnwind = true;
}
else if ( strcmp(arg, "-allow_sub_type_mismatches") == 0 ) {
fAllowCpuSubtypeMismatches = true;
+ cannotBeUsedWithBitcode(arg);
}
else if ( strcmp(arg, "-no_zero_fill_sections") == 0 ) {
- fReaderOptions.fOptimizeZeroFill = false;
+ fOptimizeZeroFill = false;
+ cannotBeUsedWithBitcode(arg);
+ }
+ else if ( strcmp(arg, "-merge_zero_fill_sections") == 0 ) {
+ fMergeZeroFill = true;
+ cannotBeUsedWithBitcode(arg);
+ }
+ else if ( strcmp(arg, "-objc_abi_version") == 0 ) {
+ const char* version = argv[++i];
+ if ( version == NULL )
+ throw "-objc_abi_version missing version number";
+ if ( strcmp(version, "2") == 0 ) {
+ fObjCABIVersion1Override = false;
+ fObjCABIVersion2Override = true;
+ }
+ else if ( strcmp(version, "1") == 0 ) {
+ fObjCABIVersion1Override = true;
+ fObjCABIVersion2Override = false;
+ }
+ else
+ warning("ignoring unrecognized argument (%s) to -objc_abi_version", version);
+ }
+ else if ( strcmp(arg, "-warn_weak_exports") == 0 ) {
+ fWarnWeakExports = true;
+ }
+ else if ( strcmp(arg, "-objc_gc_compaction") == 0 ) {
+ fObjcGcCompaction = true;
+ cannotBeUsedWithBitcode(arg);
+ }
+ else if ( strcmp(arg, "-objc_gc") == 0 ) {
+ fObjCGc = true;
+ if ( fObjCGcOnly ) {
+ warning("-objc_gc overriding -objc_gc_only");
+ fObjCGcOnly = false;
+ }
+ cannotBeUsedWithBitcode(arg);
+ }
+ else if ( strcmp(arg, "-objc_gc_only") == 0 ) {
+ fObjCGcOnly = true;
+ if ( fObjCGc ) {
+ warning("-objc_gc_only overriding -objc_gc");
+ fObjCGc = false;
+ }
+ cannotBeUsedWithBitcode(arg);
+ }
+ else if ( strcmp(arg, "-demangle") == 0 ) {
+ fDemangle = true;
+ }
+ else if ( strcmp(arg, "-version_load_command") == 0 ) {
+ fVersionLoadCommandForcedOn = true;
+ fVersionLoadCommandForcedOff = false;
+ }
+ else if ( strcmp(arg, "-no_version_load_command") == 0 ) {
+ fVersionLoadCommandForcedOff = true;
+ fVersionLoadCommandForcedOn = false;
+ cannotBeUsedWithBitcode(arg);
+ }
+ else if ( strcmp(arg, "-function_starts") == 0 ) {
+ fFunctionStartsForcedOn = true;
+ fFunctionStartsForcedOff = false;
+ }
+ else if ( strcmp(arg, "-no_function_starts") == 0 ) {
+ fFunctionStartsForcedOff = true;
+ fFunctionStartsForcedOn = false;
+ cannotBeUsedWithBitcode(arg);
+ }
+ else if ( strcmp(arg, "-no_data_in_code_info") == 0 ) {
+ fDataInCodeInfoLoadCommandForcedOff = true;
+ fDataInCodeInfoLoadCommandForcedOn = false;
+ cannotBeUsedWithBitcode(arg);
+ }
+ else if ( strcmp(arg, "-data_in_code_info") == 0 ) {
+ fDataInCodeInfoLoadCommandForcedOn = true;
+ fDataInCodeInfoLoadCommandForcedOff = false;
+ }
+ else if ( strcmp(arg, "-object_path_lto") == 0 ) {
+ fTempLtoObjectPath = argv[++i];
+ if ( fTempLtoObjectPath == NULL )
+ throw "missing argument to -object_path_lto";
+ }
+ else if ( strcmp(arg, "-no_objc_category_merging") == 0 ) {
+ fObjcCategoryMerging = false;
+ }
+ else if ( strcmp(arg, "-force_symbols_weak_list") == 0 ) {
+ snapshotFileArgIndex = 1;
+ loadExportFile(argv[++i], "-force_symbols_weak_list", fForceWeakSymbols);
+ cannotBeUsedWithBitcode(arg);
+ }
+ else if ( strcmp(arg, "-force_symbols_not_weak_list") == 0 ) {
+ snapshotFileArgIndex = 1;
+ loadExportFile(argv[++i], "-force_symbols_not_weak_list", fForceNotWeakSymbols);
+ cannotBeUsedWithBitcode(arg);
+ }
+ else if ( strcmp(arg, "-force_symbol_weak") == 0 ) {
+ const char* symbol = argv[++i];
+ if ( symbol == NULL )
+ throw "-force_symbol_weak missing <symbol>";
+ fForceWeakSymbols.insert(symbol);
+ cannotBeUsedWithBitcode(arg);
+ }
+ else if ( strcmp(arg, "-force_symbol_not_weak") == 0 ) {
+ const char* symbol = argv[++i];
+ if ( symbol == NULL )
+ throw "-force_symbol_not_weak missing <symbol>";
+ fForceNotWeakSymbols.insert(symbol);
+ cannotBeUsedWithBitcode(arg);
+ }
+ else if ( strcmp(arg, "-reexported_symbols_list") == 0 ) {
+ snapshotFileArgIndex = 1;
+ if ( fExportMode == kExportSome )
+ throw "can't use -exported_symbols_list and -reexported_symbols_list";
+ loadExportFile(argv[++i], "-reexported_symbols_list", fReExportSymbols);
+ }
+ else if ( strcmp(arg, "-dyld_env") == 0 ) {
+ const char* envarg = argv[++i];
+ if ( envarg == NULL )
+ throw "-dyld_env missing ENV=VALUE";
+ if ( strchr(envarg, '=') == NULL )
+ throw "-dyld_env missing ENV=VALUE";
+ fDyldEnvironExtras.push_back(envarg);
+ cannotBeUsedWithBitcode(arg);
+ }
+ else if ( strcmp(arg, "-page_align_data_atoms") == 0 ) {
+ fPageAlignDataAtoms = true;
+ cannotBeUsedWithBitcode(arg);
+ }
+ else if (strcmp(arg, "-debug_snapshot") == 0) {
+ fLinkSnapshot.setSnapshotMode(Snapshot::SNAPSHOT_DEBUG);
+ fSnapshotRequested = true;
+ cannotBeUsedWithBitcode(arg);
+ }
+ else if (strcmp(arg, "-snapshot_dir") == 0) {
+ const char* path = argv[++i];
+ if ( path == NULL )
+ throw "-snapshot_dir missing path";
+ fLinkSnapshot.setSnapshotMode(Snapshot::SNAPSHOT_DEBUG);
+ fLinkSnapshot.setSnapshotPath(path);
+ fSnapshotRequested = true;
+ cannotBeUsedWithBitcode(arg);
+ }
+ else if ( strcmp(arg, "-new_main") == 0 ) {
+ fEntryPointLoadCommandForceOn = true;
+ cannotBeUsedWithBitcode(arg);
+ }
+ else if ( strcmp(arg, "-no_new_main") == 0 ) {
+ fEntryPointLoadCommandForceOff = true;
+ cannotBeUsedWithBitcode(arg);
+ }
+ else if ( strcmp(arg, "-source_version") == 0 ) {
+ const char* vers = argv[++i];
+ if ( vers == NULL )
+ throw "-source_version missing <version>";
+ fSourceVersion = parseVersionNumber64(vers);
+ }
+ else if ( strcmp(arg, "-add_source_version") == 0 ) {
+ fSourceVersionLoadCommandForceOn = true;
+ }
+ else if ( strcmp(arg, "-no_source_version") == 0 ) {
+ fSourceVersionLoadCommandForceOff = true;
+ cannotBeUsedWithBitcode(arg);
+ }
+ else if ( strcmp(arg, "-sdk_version") == 0 ) {
+ const char* vers = argv[++i];
+ if ( vers == NULL )
+ throw "-sdk_version missing <version>";
+ fSDKVersion = parseVersionNumber32(vers);
+ }
+ else if ( strcmp(arg, "-dependent_dr_info") == 0 ) {
+ warnObsolete(arg);
+ }
+ else if ( strcmp(arg, "-no_dependent_dr_info") == 0 ) {
+ warnObsolete(arg);
+ }
+ else if ( strcmp(arg, "-kexts_use_stubs") == 0 ) {
+ fKextsUseStubs = true;
+ cannotBeUsedWithBitcode(arg);
+ }
+ else if ( strcmp(argv[i], "-dependency_info") == 0 ) {
+ snapshotArgCount = 0;
+ ++i;
+ // previously handled by buildSearchPaths()
+ }
+ else if ( strcmp(arg, "-export_dynamic") == 0 ) {
+ fExportDynamic = true;
+ }
+ else if ( strcmp(arg, "-force_symbols_coalesce_list") == 0 ) {
+ snapshotFileArgIndex = 1;
+ loadExportFile(argv[++i], "-force_symbols_coalesce_list", fForceCoalesceSymbols);
+ }
+ else if ( strcmp(arg, "-add_linker_option") == 0 ) {
+ // ex: -add_linker_option '-framework Foundation'
+ const char* optString = argv[++i];
+ if ( optString == NULL )
+ throw "-add_linker_option missing <option>";
+ // break up into list of tokens at whitespace
+ std::vector<const char*> opts;
+ char* buffer = strdup(optString);
+ char* start = buffer;
+ for (char* s = buffer; ; ++s) {
+ if ( isspace(*s) ) {
+ *s = '\0';
+ opts.push_back(start);
+ start = s+1;
+ }
+ else if ( *s == '\0' ) {
+ opts.push_back(start);
+ break;
+ }
+ }
+ fLinkerOptions.push_back(opts);
+ cannotBeUsedWithBitcode(arg);
+ }
+ else if ( strcmp(arg, "-allow_simulator_linking_to_macosx_dylibs") == 0 ) {
+ fAllowSimulatorToLinkWithMacOSX = true;
+ cannotBeUsedWithBitcode(arg);
+ }
+ else if ( strcmp(arg, "-keep_dwarf_unwind") == 0 ) {
+ fKeepDwarfUnwindForcedOn = true;
+ fKeepDwarfUnwindForcedOff = false;
+ cannotBeUsedWithBitcode(arg);
+ }
+ else if ( strcmp(arg, "-no_keep_dwarf_unwind") == 0 ) {
+ fKeepDwarfUnwindForcedOn = false;
+ fKeepDwarfUnwindForcedOff = true;
+ cannotBeUsedWithBitcode(arg);
+ }
+ else if ( strcmp(arg, "-verbose_optimization_hints") == 0 ) {
+ fVerboseOptimizationHints = true;
+ }
+ else if ( strcmp(arg, "-ignore_optimization_hints") == 0 ) {
+ fIgnoreOptimizationHints = true;
+ cannotBeUsedWithBitcode(arg);
+ }
+ else if ( strcmp(arg, "-no_dtrace_dof") == 0 ) {
+ fGenerateDtraceDOF = false;
+ }
+ else if ( strcmp(arg, "-rename_section") == 0 ) {
+ if ( (argv[i+1]==NULL) || (argv[i+2]==NULL) || (argv[i+3]==NULL) || (argv[i+4]==NULL) )
+ throw "-rename_section missing <segment> <section> <segment> <section>";
+ addSectionRename(argv[i+1], argv[i+2], argv[i+3], argv[i+4]);
+ i += 4;
+ cannotBeUsedWithBitcode(arg);
+ }
+ else if ( strcmp(arg, "-rename_segment") == 0 ) {
+ if ( (argv[i+1]==NULL) || (argv[i+2]==NULL) )
+ throw "-rename_segment missing <existing-segment> <new-segment>";
+ addSegmentRename(argv[i+1], argv[i+2]);
+ i += 2;
+ cannotBeUsedWithBitcode(arg);
+ }
+ else if ( strcmp(arg, "-move_to_ro_segment") == 0 ) {
+ if ( (argv[i+1]==NULL) || (argv[i+2]==NULL) )
+ throw "-move_to_ro_segment missing <segment> <symbol-list-file>";
+ addSymbolMove(argv[i+1], argv[i+2], fSymbolsMovesCode, "-move_to_ro_segment");
+ i += 2;
+ cannotBeUsedWithBitcode(arg);
+ }
+ else if ( strcmp(arg, "-move_to_rw_segment") == 0 ) {
+ if ( (argv[i+1]==NULL) || (argv[i+2]==NULL) )
+ throw "-move_to_rw_segment missing <segment> <symbol-list-file>";
+ addSymbolMove(argv[i+1], argv[i+2], fSymbolsMovesData, "-move_to_rw_segment");
+ i += 2;
+ cannotBeUsedWithBitcode(arg);
+ }
+ else if ( strcmp(arg, "-trace_symbol_layout") == 0 ) {
+ fTraceSymbolLayout = true;
+ }
+ else if ( strcmp(arg, "-no_branch_islands") == 0 ) {
+ fAllowBranchIslands = false;
+ cannotBeUsedWithBitcode(arg);
+ }
+ else if ( strcmp(arg, "-segment_order") == 0 ) {
+ // ex: -segment_order __TEXT:__DATA:__JUNK
+ const char* optString = argv[++i];
+ if ( optString == NULL )
+ throw "-segment_order missing colon separated <segment-list>";
+ if ( !fSegmentOrder.empty() )
+ throw "-segment_order used more than once";
+ // break up into list of tokens at colon
+ char* buffer = strdup(optString);
+ char* start = buffer;
+ for (char* s = buffer; ; ++s) {
+ if ( *s == ':' ) {
+ *s = '\0';
+ fSegmentOrder.push_back(start);
+ start = s+1;
+ }
+ else if ( *s == '\0' ) {
+ fSegmentOrder.push_back(start);
+ break;
+ }
+ }
+ cannotBeUsedWithBitcode(arg);
+ }
+ else if ( strcmp(arg, "-section_order") == 0 ) {
+ // ex: -section_order __DATA __data:__const:__nl_pointers
+ if ( (argv[i+1]==NULL) || (argv[i+2]==NULL) )
+ throw "-section_order missing <segment> <section-list>";
+ const char* segName = argv[++i];
+ const char* optString = argv[++i];
+ if ( sectionOrder(segName) != NULL )
+ throwf("-section_order %s ... used more than once", segName);
+ SectionOrderList dummy;
+ fSectionOrder.push_back(dummy);
+ SectionOrderList& entry = fSectionOrder.back();
+ entry.segmentName = segName;
+ // break up into list of tokens at colon
+ char* buffer = strdup(optString);
+ char* start = buffer;
+ for (char* s = buffer; ; ++s) {
+ if ( *s == ':' ) {
+ *s = '\0';
+ entry.sectionOrder.push_back(start);
+ start = s+1;
+ }
+ else if ( *s == '\0' ) {
+ entry.sectionOrder.push_back(start);
+ break;
+ }
+ }
+ cannotBeUsedWithBitcode(arg);
+ }
+ else if ( strcmp(arg, "-application_extension") == 0 ) {
+ fMarkAppExtensionSafe = true;
+ fCheckAppExtensionSafe = true;
+ }
+ else if ( strcmp(arg, "-no_application_extension") == 0 ) {
+ fMarkAppExtensionSafe = false;
+ fCheckAppExtensionSafe = false;
+ }
+ else if ( strcmp(arg, "-add_ast_path") == 0 ) {
+ const char* path = argv[++i];
+ if ( path == NULL )
+ throw "-add_ast_path missing <option>";
+ fASTFilePaths.push_back(path);
+ }
+ else if ( strcmp(arg, "-force_load_swift_libs") == 0 ) {
+ fForceLoadSwiftLibs = true;
+ }
+ else if ( strcmp(arg, "-not_for_dyld_shared_cache") == 0 ) {
+ fSharedRegionEligibleForceOff = true;
+ cannotBeUsedWithBitcode(arg);
+ }
+ else if ( strcmp(arg, "-dirty_data_list") == 0 ) {
+ if ( argv[i+1] == NULL )
+ throw "-dirty_data_list missing <symbol-list-file>";
+ addSymbolMove("__DATA_DIRTY", argv[i+1], fSymbolsMovesData, "-dirty_data_list");
+ ++i;
+ cannotBeUsedWithBitcode(arg);
+ }
+ else if ( strcmp(arg, "-data_const") == 0 ) {
+ fUseDataConstSegmentForceOn = true;
+ cannotBeUsedWithBitcode(arg);
+ }
+ else if ( strcmp(arg, "-no_data_const") == 0 ) {
+ fUseDataConstSegmentForceOff = true;
+ cannotBeUsedWithBitcode(arg);
+ }
+ else if ( strcmp(arg, "-text_exec") == 0 ) {
+ fUseTextExecSegment = true;
+ cannotBeUsedWithBitcode(arg);
+ }
+ else if ( strcmp(arg, "-add_split_seg_info") == 0) {
+ fSharedRegionEligible = true;
+ cannotBeUsedWithBitcode(arg);
+ }
+ else if ( strcmp(arg, "-no_deduplicate") == 0 ) {
+ fDeDupe = false;
+ }
+ else if ( strcmp(arg, "-verbose_deduplicate") == 0 ) {
+ fVerboseDeDupe = true;
+ }
+ else if ( strcmp(arg, "-max_default_common_align") == 0 ) {
+ const char* alignStr = argv[++i];
+ if ( alignStr == NULL )
+ throw "-max_default_common_align missing <align-value>";
+ // argument is a hexadecimal number
+ char* endptr;
+ unsigned long value = strtoul(alignStr, &endptr, 16);
+ if ( *endptr != '\0')
+ throw "argument for -max_default_common_align is not a hexadecimal number";
+ if ( value > 0x8000 )
+ throw "argument for -max_default_common_align must be less than or equal to 0x8000";
+ if ( value == 0 ) {
+ warning("zero is not a valid -max_default_common_align");
+ value = 1;
+ }
+ // alignment is power of 2
+ uint8_t alignment = (uint8_t)__builtin_ctz(value);
+ if ( (unsigned long)(1 << alignment) != value ) {
+ warning("alignment for -max_default_common_align is not a power of two, using 0x%X", 1 << alignment);
+ }
+ fMaxDefaultCommonAlign = alignment;
+ }
+ else if ( strcmp(argv[i], "-no_weak_imports") == 0 ) {
+ fAllowWeakImports = false;
+ }
+ // put this last so that it does not interfer with other options starting with 'i'
+ else if ( strncmp(arg, "-i", 2) == 0 ) {
+ const char* colon = strchr(arg, ':');
+ if ( colon == NULL )
+ throwf("unknown option: %s", arg);
+ Options::AliasPair pair;
+ char* temp = new char[colon-arg];
+ strlcpy(temp, &arg[2], colon-arg-1);
+ pair.realName = &colon[1];
+ pair.alias = temp;
+ fAliases.push_back(pair);
}
else {
throwf("unknown option: %s", arg);
}
+
+ if (snapshotArgCount == -1)
+ snapshotArgCount = i-snapshotArgIndex+1;
+ if (snapshotArgCount > 0)
+ fLinkSnapshot.addSnapshotLinkArg(snapshotArgIndex, snapshotArgCount, snapshotFileArgIndex);
}
else {
FileInfo info = findFile(arg);
+ info.ordinal = ld::File::Ordinal::makeArgOrdinal((uint16_t)i);
if ( strcmp(&info.path[strlen(info.path)-2], ".a") == 0 )
addLibrary(info);
else
// if a -lazy option was used, implicitly link in lazydylib1.o
if ( fUsingLazyDylibLinking ) {
- addLibrary(findLibrary("lazydylib1.o"));
+ FileInfo info = findLibrary("lazydylib1.o");
+ info.ordinal = ld::File::Ordinal::makeArgOrdinal((uint16_t)argc);
+ addLibrary(info);
}
+
+ if (fSnapshotRequested)
+ fLinkSnapshot.createSnapshot();
}
frameworkPaths.reserve(10);
// scan through argv looking for -L, -F, -Z, and -syslibroot options
for(int i=0; i < argc; ++i) {
- if ( (argv[i][0] == '-') && (argv[i][1] == 'L') )
- libraryPaths.push_back(&argv[i][2]);
- else if ( (argv[i][0] == '-') && (argv[i][1] == 'F') )
- frameworkPaths.push_back(&argv[i][2]);
+ if ( (argv[i][0] == '-') && (argv[i][1] == 'L') ) {
+ const char* libSearchDir = &argv[i][2];
+ // Allow either "-L{path}" or "-L {path}".
+ if (argv[i][2] == '\0') {
+ // -L {path}. Make sure there is an argument following this.
+ const char* path = argv[++i];
+ if ( path == NULL )
+ throw "-L missing argument";
+ libSearchDir = path;
+ }
+ if ( libSearchDir[0] == '\0' )
+ throw "-L must be immediately followed by a directory path (no space)";
+ libraryPaths.push_back(libSearchDir);
+ }
+ else if ( (argv[i][0] == '-') && (argv[i][1] == 'F') ) {
+ const char* frameworkSearchDir = &argv[i][2];
+ // Allow either "-F{path}" or "-F {path}".
+ if (argv[i][2] == '\0') {
+ // -F {path}. Make sure there is an argument following this.
+ const char* path = argv[++i];
+ if ( path == NULL )
+ throw "-F missing argument";
+ frameworkSearchDir = path;
+ }
+ if ( frameworkSearchDir[0] == '\0' )
+ throw "-F must be immediately followed by a directory path (no space)";
+ frameworkPaths.push_back(frameworkSearchDir);
+ }
else if ( strcmp(argv[i], "-Z") == 0 )
addStandardLibraryDirectories = false;
else if ( strcmp(argv[i], "-v") == 0 ) {
fVerbose = true;
extern const char ldVersionString[];
fprintf(stderr, "%s", ldVersionString);
+ fprintf(stderr, "configured to support archs: %s\n", ALL_SUPPORTED_ARCHS);
// if only -v specified, exit cleanly
if ( argc == 2 ) {
-#if LTO_SUPPORT
- printLTOVersion(*this);
-#endif
+ const char* ltoVers = lto::version();
+ if ( ltoVers != NULL )
+ fprintf(stderr, "LTO support using: %s\n", ltoVers);
+ fprintf(stderr, "TAPI support using: %s\n", tapi::Version::getFullVersionAsString().c_str());
exit(0);
}
}
fSDKPaths.push_back(path);
}
else if ( strcmp(argv[i], "-search_paths_first") == 0 ) {
- // ??? Deprecate when we get -Bstatic/-Bdynamic.
fLibrarySearchMode = kSearchDylibAndArchiveInEachDir;
}
+ else if ( strcmp(argv[i], "-search_dylibs_first") == 0 ) {
+ fLibrarySearchMode = kSearchAllDirsForDylibsThenAllDirsForArchives;
+ }
else if ( strcmp(argv[i], "-w") == 0 ) {
sEmitWarnings = false;
}
+ else if ( strcmp(argv[i], "-fatal_warnings") == 0 ) {
+ sFatalWarnings = true;
+ }
+ else if ( strcmp(argv[i], "-dependency_info") == 0 ) {
+ const char* path = argv[++i];
+ if ( path == NULL )
+ throw "-dependency_info missing <path>";
+ fDependencyInfoPath = path;
+ }
+ else if ( strcmp(argv[i], "-bitcode_bundle") == 0 ) {
+ fBundleBitcode = true;
+ }
}
int standardLibraryPathsStartIndex = libraryPaths.size();
int standardFrameworkPathsStartIndex = frameworkPaths.size();
strcat(newPath, libDir);
struct stat statBuffer;
if ( stat(newPath, &statBuffer) == 0 ) {
- fLibrarySearchPaths.push_back(strdup(newPath));
- sdkOverride = true;
+ if ( (statBuffer.st_mode & S_IFDIR) == 0 ) {
+ warning("-syslibroot and -L combined path '%s' is not a directory", newPath);
+ }
+ else {
+ fLibrarySearchPaths.push_back(strdup(newPath));
+ sdkOverride = true;
+ }
}
}
}
// if one SDK is specified and a standard library path is not in the SDK, don't use it
}
else {
- fLibrarySearchPaths.push_back(libDir);
+ struct stat statBuffer;
+ if ( stat(libDir, &statBuffer) == 0 ) {
+ if ( (statBuffer.st_mode & S_IFDIR) == 0 )
+ warning("-L path '%s' is not a directory", libDir);
+ else
+ fLibrarySearchPaths.push_back(libDir);
+ }
+ else if ( !addStandardLibraryDirectories || (strcmp(libDir, "/usr/local/lib") != 0) ) {
+ warning("directory not found for option '-L%s'", libDir);
+ }
}
}
}
+
// now merge sdk and framework paths to make real search paths
fFrameworkSearchPaths.reserve(frameworkPaths.size()*(fSDKPaths.size()+1));
int frameIndex = 0;
strcat(newPath, frameworkDir);
struct stat statBuffer;
if ( stat(newPath, &statBuffer) == 0 ) {
- fFrameworkSearchPaths.push_back(strdup(newPath));
- sdkOverride = true;
+ if ( (statBuffer.st_mode & S_IFDIR) == 0 ) {
+ warning("-syslibroot and -F combined path '%s' is not a directory", newPath);
+ }
+ else {
+ fFrameworkSearchPaths.push_back(strdup(newPath));
+ sdkOverride = true;
+ }
}
}
}
// if one SDK is specified and a standard library path is not in the SDK, don't use it
}
else {
- fFrameworkSearchPaths.push_back(frameworkDir);
+ struct stat statBuffer;
+ if ( stat(frameworkDir, &statBuffer) == 0 ) {
+ if ( (statBuffer.st_mode & S_IFDIR) == 0 )
+ warning("-F path '%s' is not a directory", frameworkDir);
+ else
+ fFrameworkSearchPaths.push_back(frameworkDir);
+ }
+ else if ( !addStandardLibraryDirectories || (strcmp(frameworkDir, "/Library/Frameworks/") != 0) ) {
+ warning("directory not found for option '-F%s'", frameworkDir);
+ }
}
}
}
{
if ((getenv("LD_TRACE_ARCHIVES") != NULL)
|| (getenv("RC_TRACE_ARCHIVES") != NULL))
- fReaderOptions.fTraceArchives = true;
+ fTraceArchives = true;
if ((getenv("LD_TRACE_DYLIBS") != NULL)
|| (getenv("RC_TRACE_DYLIBS") != NULL)) {
- fReaderOptions.fTraceDylibs = true;
- fReaderOptions.fTraceIndirectDylibs = true;
+ fTraceDylibs = true;
+ fTraceIndirectDylibs = true;
+ }
+
+ if ((getenv("LD_TRACE_DEPENDENTS") != NULL)) {
+
+ fTraceEmitJSON = true;
}
if (getenv("RC_TRACE_DYLIB_SEARCHING") != NULL) {
if (getenv("LD_PRINT_OPTIONS") != NULL)
fPrintOptions = true;
- if (fReaderOptions.fTraceDylibs || fReaderOptions.fTraceArchives)
- fReaderOptions.fTraceOutputFile = getenv("LD_TRACE_FILE");
+ if (fTraceDylibs || fTraceArchives || fTraceEmitJSON)
+ fTraceOutputFile = getenv("LD_TRACE_FILE");
if (getenv("LD_PRINT_ORDER_FILE_STATISTICS") != NULL)
fPrintOrderFileStatistics = true;
if (getenv("LD_SPLITSEGS_NEW_LIBRARIES") != NULL)
fSplitSegs = true;
- if (getenv("LD_NO_ENCRYPT") != NULL)
+ if (getenv("LD_NO_ENCRYPT") != NULL) {
fEncryptable = false;
+ fMarkAppExtensionSafe = true; // temporary
+ fCheckAppExtensionSafe = false;
+ }
+
+ if (getenv("LD_APPLICATION_EXTENSION_SAFE") != NULL) {
+ fMarkAppExtensionSafe = true;
+ fCheckAppExtensionSafe = false;
+ }
if (getenv("LD_ALLOW_CPU_SUBTYPE_MISMATCHES") != NULL)
fAllowCpuSubtypeMismatches = true;
- // for now disable compressed linkedit functionality
- if ( getenv("LD_NO_COMPACT_LINKEDIT") != NULL ) {
- fMakeCompressedDyldInfo = false;
- fMakeClassicDyldInfo = true;
- }
-
+ if (getenv("LD_DYLIB_CPU_SUBTYPES_MUST_MATCH") != NULL)
+ fEnforceDylibSubtypesMatch = true;
+
sWarningsSideFilePath = getenv("LD_WARN_FILE");
+
+ const char* customDyldPath = getenv("LD_DYLD_PATH");
+ if ( customDyldPath != NULL )
+ fDyldInstallPath = customDyldPath;
+
+ const char* debugArchivePath = getenv("LD_DEBUG_SNAPSHOT");
+ if (debugArchivePath != NULL) {
+ fLinkSnapshot.setSnapshotMode(Snapshot::SNAPSHOT_DEBUG);
+ if (strlen(debugArchivePath) > 0)
+ fLinkSnapshot.setSnapshotPath(debugArchivePath);
+ fSnapshotRequested = true;
+ }
+
+ const char* pipeFdString = getenv("LD_PIPELINE_FIFO");
+ if (pipeFdString != NULL) {
+ fPipelineFifo = pipeFdString;
+ }
}
}
// allow build system to force on dead-code-stripping
- if ( fDeadStrip == kDeadStripOff ) {
+ if ( !fDeadStrip ) {
if ( getenv("LD_DEAD_STRIP") != NULL ) {
switch (fOutputKind) {
case Options::kDynamicLibrary:
case Options::kDynamicExecutable:
case Options::kDynamicBundle:
- fDeadStrip = kDeadStripOn;
+ fDeadStrip = true;
break;
case Options::kPreload:
case Options::kObjectFile:
// allow build system to force on -warn_commons
if ( getenv("LD_WARN_COMMONS") != NULL )
fWarnCommons = true;
+
+ // allow B&I to set default -source_version
+ if ( fSourceVersion == 0 ) {
+ const char* vers = getenv("RC_ProjectSourceVersion");
+ if ( vers != NULL )
+ fSourceVersion = parseVersionNumber64(vers);
+ }
}
// sync reader options
switch ( fOutputKind ) {
case Options::kObjectFile:
- fReaderOptions.fForFinalLinkedImage = false;
+ fForFinalLinkedImage = false;
break;
case Options::kDyld:
- fReaderOptions.fForDyld = true;
- fReaderOptions.fForFinalLinkedImage = true;
- fReaderOptions.fNoEHLabels = true;
+ fForDyld = true;
+ fForFinalLinkedImage = true;
+ fNoEHLabels = true;
break;
case Options::kDynamicLibrary:
case Options::kDynamicBundle:
case Options::kKextBundle:
- fReaderOptions.fForFinalLinkedImage = true;
- fReaderOptions.fNoEHLabels = true;
+ fForFinalLinkedImage = true;
+ fNoEHLabels = true;
break;
case Options::kDynamicExecutable:
case Options::kStaticExecutable:
case Options::kPreload:
- fReaderOptions.fLinkingMainExecutable = true;
- fReaderOptions.fForFinalLinkedImage = true;
- fReaderOptions.fNoEHLabels = true;
+ fLinkingMainExecutable = true;
+ fForFinalLinkedImage = true;
+ fNoEHLabels = true;
break;
}
// set default min OS version
- if ( (fReaderOptions.fMacVersionMin == ObjectFile::ReaderOptions::kMinMacVersionUnset)
- && (fReaderOptions.fIPhoneVersionMin == ObjectFile::ReaderOptions::kMinIPhoneVersionUnset) ) {
+ if ( (fMacVersionMin == ld::macVersionUnset) && (fIOSVersionMin == ld::iOSVersionUnset) && (fWatchOSVersionMin == ld::wOSVersionUnset) ) {
// if neither -macosx_version_min nor -iphoneos_version_min used, try environment variables
const char* macVers = getenv("MACOSX_DEPLOYMENT_TARGET");
const char* iPhoneVers = getenv("IPHONEOS_DEPLOYMENT_TARGET");
- if ( macVers != NULL )
+ const char* iOSVers = getenv("IOS_DEPLOYMENT_TARGET");
+ const char* wOSVers = getenv("WATCHOS_DEPLOYMENT_TARGET");
+ if ( macVers != NULL )
setMacOSXVersionMin(macVers);
else if ( iPhoneVers != NULL )
- setIPhoneVersionMin(iPhoneVers);
+ setIOSVersionMin(iPhoneVers);
+ else if ( iOSVers != NULL )
+ setIOSVersionMin(iOSVers);
+ else if ( wOSVers != NULL )
+ setWatchOSVersionMin(wOSVers);
else {
// if still nothing, set default based on architecture
switch ( fArchitecture ) {
case CPU_TYPE_I386:
case CPU_TYPE_X86_64:
- case CPU_TYPE_POWERPC:
- fReaderOptions.fMacVersionMin = ObjectFile::ReaderOptions::k10_6; // FIX FIX, this really should be a check of the OS version the linker is running o
+ if ( (fOutputKind != Options::kObjectFile) && (fOutputKind != Options::kPreload) ) {
+ #ifdef DEFAULT_MACOSX_MIN_VERSION
+ warning("-macosx_version_min not specified, assuming " DEFAULT_MACOSX_MIN_VERSION);
+ setMacOSXVersionMin(DEFAULT_MACOSX_MIN_VERSION);
+ #else
+ warning("-macosx_version_min not specified, assuming 10.6");
+ setMacOSXVersionMin("10.6");
+ #endif
+ }
break;
case CPU_TYPE_ARM:
- fReaderOptions.fIPhoneVersionMin = ObjectFile::ReaderOptions::k2_0;
+ if ( (fOutputKind != Options::kObjectFile) && (fOutputKind != Options::kPreload) ) {
+ #if defined(DEFAULT_IPHONEOS_MIN_VERSION)
+ warning("-ios_version_min not specified, assuming " DEFAULT_IPHONEOS_MIN_VERSION);
+ setIOSVersionMin(DEFAULT_IPHONEOS_MIN_VERSION);
+ #else
+ if ( fSubArchitecture == CPU_SUBTYPE_ARM_V7K ) {
+ warning("-watchos_version_min not specified, assuming 2.0");
+ setWatchOSVersionMin("2.0");
+ }
+ else {
+ warning("-ios_version_min not specified, assuming 6.0");
+ setIOSVersionMin("6.0");
+ }
+ #endif
+ }
+ break;
+ default:
+ // architecture will be infered later by examining .o files
break;
}
}
// adjust min based on architecture
switch ( fArchitecture ) {
case CPU_TYPE_I386:
- if ( fReaderOptions.fMacVersionMin < ObjectFile::ReaderOptions::k10_4 ) {
+ if ( (fPlatform == kPlatformOSX) && (fMacVersionMin < ld::mac10_4) ) {
//warning("-macosx_version_min should be 10.4 or later for i386");
- fReaderOptions.fMacVersionMin = ObjectFile::ReaderOptions::k10_4;
- }
- break;
- case CPU_TYPE_POWERPC64:
- if ( fReaderOptions.fMacVersionMin < ObjectFile::ReaderOptions::k10_4 ) {
- //warning("-macosx_version_min should be 10.4 or later for ppc64");
- fReaderOptions.fMacVersionMin = ObjectFile::ReaderOptions::k10_4;
+ fMacVersionMin = ld::mac10_4;
}
break;
case CPU_TYPE_X86_64:
- if ( fReaderOptions.fMacVersionMin < ObjectFile::ReaderOptions::k10_4 ) {
+ if ( (fPlatform == kPlatformOSX) && (fMacVersionMin < ld::mac10_4) ) {
//warning("-macosx_version_min should be 10.4 or later for x86_64");
- fReaderOptions.fMacVersionMin = ObjectFile::ReaderOptions::k10_4;
+ fMacVersionMin = ld::mac10_4;
+ }
+ break;
+ case CPU_TYPE_ARM64:
+ if ( (fPlatform == kPlatformiOS) && (fIOSVersionMin < ld::iOS_7_0) ) {
+ //warning("-mios_version_min should be 7.0 or later for arm64");
+ fIOSVersionMin = ld::iOS_7_0;
}
break;
}
+ // default to adding functions start for dynamic code, static code must opt-in
+ switch ( fOutputKind ) {
+ case Options::kPreload:
+ case Options::kStaticExecutable:
+ case Options::kKextBundle:
+ if ( fDataInCodeInfoLoadCommandForcedOn )
+ fDataInCodeInfoLoadCommand = true;
+ if ( fFunctionStartsForcedOn )
+ fFunctionStartsLoadCommand = true;
+ break;
+ case Options::kObjectFile:
+ if ( !fDataInCodeInfoLoadCommandForcedOff )
+ fDataInCodeInfoLoadCommand = true;
+ if ( fFunctionStartsForcedOn )
+ fFunctionStartsLoadCommand = true;
+ break;
+ case Options::kDynamicExecutable:
+ case Options::kDyld:
+ case Options::kDynamicLibrary:
+ case Options::kDynamicBundle:
+ if ( !fDataInCodeInfoLoadCommandForcedOff )
+ fDataInCodeInfoLoadCommand = true;
+ if ( !fFunctionStartsForcedOff )
+ fFunctionStartsLoadCommand = true;
+ break;
+ }
+
// adjust kext type based on architecture
if ( fOutputKind == kKextBundle ) {
switch ( fArchitecture ) {
case CPU_TYPE_X86_64:
// x86_64 uses new MH_KEXT_BUNDLE type
- fMakeClassicDyldInfo = true;
fMakeCompressedDyldInfo = false;
+ fMakeCompressedDyldInfoForceOff = true;
fAllowTextRelocs = true;
fUndefinedTreatment = kUndefinedDynamicLookup;
break;
- case CPU_TYPE_POWERPC:
- case CPU_TYPE_I386:
+ case CPU_TYPE_ARM64:
+ // arm64 uses new MH_KEXT_BUNDLE type
+ fMakeCompressedDyldInfo = false;
+ fMakeCompressedDyldInfoForceOff = true;
+ fAllowTextRelocs = false;
+ fKextsUseStubs = true;
+ fUndefinedTreatment = kUndefinedDynamicLookup;
+ break;
case CPU_TYPE_ARM:
+ if ( min_iOS(ld::iOS_5_0) ) {
+ // iOS 5.0 and later use new MH_KEXT_BUNDLE type
+ fMakeCompressedDyldInfo = false;
+ fMakeCompressedDyldInfoForceOff = true;
+ // kexts are PIC in iOS 6.0 and later
+ fAllowTextRelocs = !min_iOS(ld::iOS_6_0);
+ fKextsUseStubs = !fAllowTextRelocs;
+ fUndefinedTreatment = kUndefinedDynamicLookup;
+ break;
+ }
+ // else use object file
+ case CPU_TYPE_I386:
// use .o files
fOutputKind = kObjectFile;
break;
// disable implicit dylibs when targeting 10.3
// <rdar://problem/5451987> add option to disable implicit load commands for indirectly used public dylibs
- if ( !minOS(ObjectFile::ReaderOptions::k10_4, ObjectFile::ReaderOptions::k2_0) )
- fReaderOptions.fImplicitlyLinkPublicDylibs = false;
+ if ( !minOS(ld::mac10_4, ld::iOS_2_0) )
+ fImplicitlyLinkPublicDylibs = false;
// allow build system to force linker to ignore -prebind
// split segs only allowed for dylibs
if ( fSplitSegs ) {
- // split seg only supported for ppc, i386, and arm.
+ // split seg only supported for i386, and arm.
switch ( fArchitecture ) {
- case CPU_TYPE_POWERPC:
case CPU_TYPE_I386:
if ( fOutputKind != Options::kDynamicLibrary )
fSplitSegs = false;
}
}
+ // set too-large size
+ switch ( fArchitecture ) {
+ case CPU_TYPE_I386:
+ fMaxAddress = 0xFFFFFFFF;
+ break;
+ case CPU_TYPE_X86_64:
+ break;
+ case CPU_TYPE_ARM:
+ switch ( fOutputKind ) {
+ case Options::kDynamicExecutable:
+ case Options::kDynamicLibrary:
+ case Options::kDynamicBundle:
+ // user land code is limited to low 1GB
+ fMaxAddress = 0x2FFFFFFF;
+ break;
+ case Options::kStaticExecutable:
+ case Options::kObjectFile:
+ case Options::kDyld:
+ case Options::kPreload:
+ case Options::kKextBundle:
+ fMaxAddress = 0xFFFFFFFF;
+ break;
+ }
+ // range check -seg1addr for ARM
+ if ( fBaseAddress > fMaxAddress ) {
+ warning("ignoring -seg1addr 0x%08llX. Address out of range.", fBaseAddress);
+ fBaseAddress = 0;
+ }
+ break;
+ }
+
// <rdar://problem/6138961> -r implies no prebinding for all architectures
if ( fOutputKind == Options::kObjectFile )
fPrebind = false;
// disable prebinding depending on arch and min OS version
if ( fPrebind ) {
switch ( fArchitecture ) {
- case CPU_TYPE_POWERPC:
case CPU_TYPE_I386:
- if ( fReaderOptions.fMacVersionMin == ObjectFile::ReaderOptions::k10_4 ) {
+ if ( fMacVersionMin == ld::mac10_4 ) {
// in 10.4 only split seg dylibs are prebound
if ( (fOutputKind != Options::kDynamicLibrary) || ! fSplitSegs )
fPrebind = false;
}
- else if ( fReaderOptions.fMacVersionMin >= ObjectFile::ReaderOptions::k10_5 ) {
+ else if ( fMacVersionMin >= ld::mac10_5 ) {
// in 10.5 nothing is prebound
fPrebind = false;
}
+ else if ( fIOSVersionMin != ld::iOSVersionUnset ) {
+ // nothing in simulator is prebound
+ fPrebind = false;
+ }
else {
// in 10.3 and earlier only dylibs and main executables could be prebound
switch ( fOutputKind ) {
}
}
break;
- case CPU_TYPE_POWERPC64:
case CPU_TYPE_X86_64:
fPrebind = false;
break;
// determine if info for shared region should be added
if ( fOutputKind == Options::kDynamicLibrary ) {
- if ( minOS(ObjectFile::ReaderOptions::k10_5, ObjectFile::ReaderOptions::k3_1) )
- if ( !fPrebind )
+ if ( minOS(ld::mac10_5, ld::iOS_3_1) && !fTargetIOSSimulator )
+ if ( !fPrebind && !fSharedRegionEligibleForceOff )
if ( (strncmp(this->installPath(), "/usr/lib/", 9) == 0)
|| (strncmp(this->installPath(), "/System/Library/", 16) == 0) )
fSharedRegionEligible = true;
}
+ else if ( fOutputKind == Options::kDyld ) {
+ // <rdar://problem/10111122> Enable dyld to be put into the dyld shared cache
+ fSharedRegionEligible = true;
+ }
+
+ // <rdar://problem/18719327> warn if -rpath is used with OS dylibs
+ if ( fSharedRegionEligible && !fRPaths.empty() )
+ warning("-rpath cannot be used with dylibs that will be in the dyld shared cache");
+
+ // automatically use __DATA_CONST in iOS dylibs
+ if ( fSharedRegionEligible && minOS(ld::mac10_Future, ld::iOS_9_0) && !fUseDataConstSegmentForceOff ) {
+ fUseDataConstSegment = true;
+ }
+ if ( fUseDataConstSegmentForceOn ) {
+ fUseDataConstSegment = true;
+ }
+ // A -kext for iOS 10 ==> -data_const, -text_exec, -add_split_seg_info
+ if ( (fOutputKind == Options::kKextBundle) && minOS(ld::mac10_Future, ld::iOS_10_0) && (fArchitecture == CPU_TYPE_ARM64) ) {
+ fUseDataConstSegment = true;
+ fUseTextExecSegment = true;
+ fSharedRegionEligible = true;
+ }
+ if ( fUseDataConstSegment ) {
+ addSectionRename("__DATA", "__got", "__DATA_CONST", "__got");
+ addSectionRename("__DATA", "__la_symbol_ptr", "__DATA_CONST", "__la_symbol_ptr");
+ addSectionRename("__DATA", "__nl_symbol_ptr", "__DATA_CONST", "__nl_symbol_ptr");
+ addSectionRename("__DATA", "__const", "__DATA_CONST", "__const");
+ addSectionRename("__DATA", "__cfstring", "__DATA_CONST", "__cfstring");
+ addSectionRename("__DATA", "__mod_init_func", "__DATA_CONST", "__mod_init_func");
+ addSectionRename("__DATA", "__mod_term_func", "__DATA_CONST", "__mod_term_func");
+ addSectionRename("__DATA", "__objc_classlist", "__DATA_CONST", "__objc_classlist");
+ addSectionRename("__DATA", "__objc_nlclslist", "__DATA_CONST", "__objc_nlclslist");
+ addSectionRename("__DATA", "__objc_catlist", "__DATA_CONST", "__objc_catlist");
+ addSectionRename("__DATA", "__objc_nlcatlist", "__DATA_CONST", "__objc_nlcatlist");
+ addSectionRename("__DATA", "__objc_protolist", "__DATA_CONST", "__objc_protolist");
+ addSectionRename("__DATA", "__objc_imageinfo", "__DATA_CONST", "__objc_imageinfo");
+ addSectionRename("__DATA", "__objc_const", "__DATA_CONST", "__objc_const");
+ }
+ if ( fUseTextExecSegment ) {
+ addSectionRename("__TEXT", "__text", "__TEXT_EXEC", "__text");
+ addSectionRename("__TEXT", "__stubs", "__TEXT_EXEC", "__stubs");
+ }
+ // Use V2 shared cache info when targetting newer OSs
+ if ( fSharedRegionEligible && minOS(ld::mac10_12, ld::iOS_9_0)) {
+ fSharedRegionEncodingV2 = true;
+ // <rdar://problem/24772435> only use v2 for Swift dylibs on Mac OS X
+ if ( (fPlatform == kPlatformOSX) && (strncmp(this->installPath(), "/System/Library/PrivateFrameworks/Swift/", 40) != 0) )
+ fSharedRegionEncodingV2 = false;
+ fIgnoreOptimizationHints = true;
+ }
+
// figure out if module table is needed for compatibility with old ld/dyld
if ( fOutputKind == Options::kDynamicLibrary ) {
switch ( fArchitecture ) {
- case CPU_TYPE_POWERPC: // 10.3 and earlier dyld requires a module table
- case CPU_TYPE_I386: // ld_classic for 10.4.x requires a module table
- if ( fReaderOptions.fMacVersionMin <= ObjectFile::ReaderOptions::k10_5 )
- fNeedsModuleTable = true;
- break;
+ case CPU_TYPE_I386:
+ if ( fIOSVersionMin != ld::iOSVersionUnset ) // simulator never needs modules
+ break;
case CPU_TYPE_ARM:
if ( fPrebind )
fNeedsModuleTable = true; // redo_prebinding requires a module table
// <rdar://problem/5366363> -r -x implies -S
if ( (fOutputKind == Options::kObjectFile) && (fLocalSymbolHandling == kLocalSymbolsNone) )
- fReaderOptions.fDebugInfoStripping = ObjectFile::ReaderOptions::kDebugInfoNone;
-
+ fDebugInfoStripping = Options::kDebugInfoNone;
+
+ // <rdar://problem/15252891> -r implies -no_uuid
+ if ( fOutputKind == Options::kObjectFile )
+ fUUIDMode = kUUIDNone;
+
// choose how to process unwind info
switch ( fArchitecture ) {
case CPU_TYPE_I386:
case CPU_TYPE_X86_64:
+ case CPU_TYPE_ARM64:
switch ( fOutputKind ) {
case Options::kObjectFile:
case Options::kStaticExecutable:
case Options::kPreload:
case Options::kKextBundle:
- fReaderOptions.fAddCompactUnwindEncoding = false;
+ fAddCompactUnwindEncoding = false;
break;
case Options::kDyld:
case Options::kDynamicLibrary:
case Options::kDynamicBundle:
case Options::kDynamicExecutable:
- //if ( fReaderOptions.fAddCompactUnwindEncoding && (fReaderOptions.fVersionMin >= ObjectFile::ReaderOptions::k10_6) )
- // fReaderOptions.fRemoveDwarfUnwindIfCompactExists = true;
+ //if ( fAddCompactUnwindEncoding && (fVersionMin >= ld::mac10_6) )
+ // fRemoveDwarfUnwindIfCompactExists = true;
break;
}
break;
- case CPU_TYPE_POWERPC:
- case CPU_TYPE_POWERPC64:
case CPU_TYPE_ARM:
- fReaderOptions.fAddCompactUnwindEncoding = false;
- fReaderOptions.fRemoveDwarfUnwindIfCompactExists = false;
+ if ( armUsesZeroCostExceptions() ) {
+ switch ( fOutputKind ) {
+ case Options::kObjectFile:
+ case Options::kStaticExecutable:
+ case Options::kPreload:
+ case Options::kKextBundle:
+ fAddCompactUnwindEncoding = false;
+ break;
+ case Options::kDyld:
+ case Options::kDynamicLibrary:
+ case Options::kDynamicBundle:
+ case Options::kDynamicExecutable:
+ fAddCompactUnwindEncoding = true;
+ break;
+ }
+ }
+ else {
+ fAddCompactUnwindEncoding = false;
+ fRemoveDwarfUnwindIfCompactExists = false;
+ }
break;
case 0:
// if -arch is missing, assume we don't want compact unwind info
- fReaderOptions.fAddCompactUnwindEncoding = false;
+ fAddCompactUnwindEncoding = false;
break;
}
- // only ARM main executables can be encrypted
- if ( fOutputKind != Options::kDynamicExecutable )
+ // only iOS executables should be encryptable
+ switch ( fOutputKind ) {
+ case Options::kObjectFile:
+ case Options::kDyld:
+ case Options::kStaticExecutable:
+ case Options::kPreload:
+ case Options::kKextBundle:
+ fEncryptable = false;
+ break;
+ case Options::kDynamicExecutable:
+ break;
+ case Options::kDynamicLibrary:
+ case Options::kDynamicBundle:
+ // <rdar://problem/16293398> Add LC_ENCRYPTION_INFO load command to bundled frameworks
+ if ( !min_iOS(ld::iOS_7_0) )
+ fEncryptable = false;
+ break;
+ }
+ if ( (fArchitecture != CPU_TYPE_ARM) && (fArchitecture != CPU_TYPE_ARM64)
+ )
fEncryptable = false;
- if ( fArchitecture != CPU_TYPE_ARM )
+ if ( fEncryptableForceOn )
+ fEncryptable = true;
+ else if ( fEncryptableForceOff )
fEncryptable = false;
// don't move inits in dyld because dyld wants certain
// entries point at stable locations at the start of __text
if ( fOutputKind == Options::kDyld )
- fReaderOptions.fAutoOrderInitializers = false;
+ fAutoOrderInitializers = false;
// disable __data ordering for some output kinds
break;
}
+ // only use compressed LINKEDIT for final linked images
+ switch ( fOutputKind ) {
+ case Options::kDynamicExecutable:
+ case Options::kDynamicLibrary:
+ case Options::kDynamicBundle:
+ break;
+ case Options::kPreload:
+ case Options::kStaticExecutable:
+ case Options::kObjectFile:
+ case Options::kDyld:
+ case Options::kKextBundle:
+ fMakeCompressedDyldInfoForceOff = true;
+ break;
+ }
+ if ( fMakeCompressedDyldInfoForceOff )
+ fMakeCompressedDyldInfo = false;
+
+
// only use compressed LINKEDIT for:
- // x86_64 and i386 on Mac OS X 10.6 or later
- // arm on iPhoneOS 3.1 or later
+ // Mac OS X 10.6 or later
+ // iOS 3.1 or later
if ( fMakeCompressedDyldInfo ) {
- switch (fArchitecture) {
- case CPU_TYPE_I386:
- case CPU_TYPE_X86_64:
- if ( fReaderOptions.fMacVersionMin >= ObjectFile::ReaderOptions::k10_6 )
- fMakeClassicDyldInfo = false;
- else if ( fReaderOptions.fMacVersionMin < ObjectFile::ReaderOptions::k10_5 )
- fMakeCompressedDyldInfo = false;
- break;
- case CPU_TYPE_ARM:
- if ( fReaderOptions.fIPhoneVersionMin >= ObjectFile::ReaderOptions::k3_1 )
- fMakeClassicDyldInfo = false;
- else if ( fReaderOptions.fIPhoneVersionMin < ObjectFile::ReaderOptions::k3_1 )
- fMakeCompressedDyldInfo = false;
- break;
- case CPU_TYPE_POWERPC:
- case CPU_TYPE_POWERPC64:
- default:
- fMakeCompressedDyldInfo = false;
- }
+ if ( !minOS(ld::mac10_6, ld::iOS_3_1) )
+ fMakeCompressedDyldInfo = false;
}
-
- // only use compressed LINKEDIT for final linked images
- if ( fMakeCompressedDyldInfo ) {
+ // only ARM and x86_64 enforces that cpu-sub-types must match
+ switch ( fArchitecture ) {
+ case CPU_TYPE_ARM:
+ break;
+ case CPU_TYPE_X86_64:
+ fEnforceDylibSubtypesMatch = false;
+ break;
+ case CPU_TYPE_I386:
+ case CPU_TYPE_ARM64:
+ fEnforceDylibSubtypesMatch = false;
+ break;
+ }
+
+
+ // only final linked images can not optimize zero fill sections
+ if ( fOutputKind == Options::kObjectFile )
+ fOptimizeZeroFill = true;
+
+ // all undefines in -r mode
+// if ( fOutputKind == Options::kObjectFile )
+// fUndefinedTreatment = kUndefinedSuppress;
+
+ // only dynamic final linked images should warn about use of commmons
+ if ( fWarnCommons ) {
switch ( fOutputKind ) {
case Options::kDynamicExecutable:
case Options::kDynamicLibrary:
case Options::kObjectFile:
case Options::kDyld:
case Options::kKextBundle:
- fMakeCompressedDyldInfo = false;
+ fWarnCommons = false;
break;
}
}
- fReaderOptions.fMakeCompressedDyldInfo = fMakeCompressedDyldInfo;
+
+ // Mac OS X 10.5 and iPhoneOS 2.0 support LC_REEXPORT_DYLIB
+ if ( minOS(ld::mac10_5, ld::iOS_2_0) )
+ fUseSimplifiedDylibReExports = true;
+
+ // Mac OS X 10.7 and iOS 4.2 support LC_LOAD_UPWARD_DYLIB
+ if ( minOS(ld::mac10_7, ld::iOS_4_2) && (fOutputKind == kDynamicLibrary) )
+ fCanUseUpwardDylib = true;
- // only ARM enforces that cpu-sub-types must match
- if ( fArchitecture != CPU_TYPE_ARM )
- fAllowCpuSubtypeMismatches = true;
+ // MacOSX 10.7 defaults to PIE
+ if ( (fArchitecture == CPU_TYPE_I386)
+ && (fOutputKind == kDynamicExecutable)
+ && (fMacVersionMin >= ld::mac10_7) ) {
+ fPositionIndependentExecutable = true;
+ }
+
+ // armv7 for iOS4.3 defaults to PIE
+ if ( (fArchitecture == CPU_TYPE_ARM)
+ && fArchSupportsThumb2
+ && (fOutputKind == kDynamicExecutable)
+ && min_iOS(ld::iOS_4_3) ) {
+ fPositionIndependentExecutable = true;
+ }
+
+ // <rdar://problem/24535196> x86_64 defaults PIE (regardless of minOS version)
+ if ( (fArchitecture == CPU_TYPE_X86_64) && (fOutputKind == kDynamicExecutable) && (fMacVersionMin >= ld::mac10_6) )
+ fPositionIndependentExecutable = true;
+
+ // Simulator defaults to PIE
+ if ( fTargetIOSSimulator && (fOutputKind == kDynamicExecutable) )
+ fPositionIndependentExecutable = true;
+
+ // -no_pie anywhere on command line disable PIE
+ if ( fDisablePositionIndependentExecutable )
+ fPositionIndependentExecutable = false;
+
+ // arm64 is always PIE
+ if ( ((fArchitecture == CPU_TYPE_ARM64)
+ )
+ && (fOutputKind == kDynamicExecutable) ) {
+ fPositionIndependentExecutable = true;
+ if ( fDisablePositionIndependentExecutable )
+ warning("-no_pie ignored for arm64");
+ }
+
+ // set fOutputSlidable
+ switch ( fOutputKind ) {
+ case Options::kObjectFile:
+ fOutputSlidable = false;
+ break;
+ case Options::kStaticExecutable:
+ case Options::kDynamicExecutable:
+ fOutputSlidable = fPositionIndependentExecutable;
+ break;
+ case Options::kPreload:
+ fOutputSlidable = fPIEOnCommandLine;
+ break;
+ case Options::kDyld:
+ case Options::kDynamicLibrary:
+ case Options::kDynamicBundle:
+ case Options::kKextBundle:
+ fOutputSlidable = true;
+ break;
+ }
+
+ // let linker know if thread local variables are supported
+ if ( fMacVersionMin >= ld::mac10_7 ) {
+ fTLVSupport = true;
+ }
+ else if ( ((fArchitecture == CPU_TYPE_ARM64)
+ )
+ && min_iOS(ld::iOS_8_0) ) {
+ fTLVSupport = true;
+ }
+ else if ( (fArchitecture == CPU_TYPE_ARM) && min_iOS(ld::iOS_9_0) ) {
+ fTLVSupport = true;
+ }
+ else if ( fTargetIOSSimulator && (fArchitecture == CPU_TYPE_X86_64) && min_iOS(ld::iOS_8_0) ) {
+ fTLVSupport = true;
+ }
+ else if ( fTargetIOSSimulator && (fArchitecture == CPU_TYPE_I386) && min_iOS(ld::iOS_9_0) ) {
+ fTLVSupport = true;
+ }
+
+ // default to adding version load command for dynamic code, static code must opt-in
+ switch ( fOutputKind ) {
+ case Options::kObjectFile:
+ fVersionLoadCommand = false;
+ break;
+ case Options::kStaticExecutable:
+ case Options::kPreload:
+ case Options::kKextBundle:
+ if ( fVersionLoadCommandForcedOn )
+ fVersionLoadCommand = true;
+ break;
+ case Options::kDynamicExecutable:
+ case Options::kDyld:
+ case Options::kDynamicLibrary:
+ case Options::kDynamicBundle:
+ if ( !fVersionLoadCommandForcedOff )
+ fVersionLoadCommand = true;
+ break;
+ }
+
+ // support re-export of individual symbols in MacOSX 10.7 and iOS 4.2
+ if ( (fOutputKind == kDynamicLibrary) && minOS(ld::mac10_7, ld::iOS_4_2) )
+ fCanReExportSymbols = true;
+
+ // ObjC optimization is only in dynamic final linked images
+ switch ( fOutputKind ) {
+ case Options::kObjectFile:
+ case Options::kStaticExecutable:
+ case Options::kPreload:
+ case Options::kKextBundle:
+ case Options::kDyld:
+ fObjcCategoryMerging = false;
+ break;
+ case Options::kDynamicExecutable:
+ case Options::kDynamicLibrary:
+ case Options::kDynamicBundle:
+ break;
+ }
+
+ // i386 main executables linked on Mac OS X 10.7 default to NX heap
+ // regardless of target unless overriden with -allow_heap_execute anywhere
+ // on the command line
+ if ( (fArchitecture == CPU_TYPE_I386) && (fOutputKind == kDynamicExecutable) && !fDisableNonExecutableHeap)
+ fNonExecutableHeap = true;
- // only final linked images can not optimize zero fill sections
- if ( fOutputKind == Options::kObjectFile )
- fReaderOptions.fOptimizeZeroFill = true;
+ // Use LC_MAIN instead of LC_UNIXTHREAD for newer OSs
+ switch ( fOutputKind ) {
+ case Options::kDynamicExecutable:
+ if ( fEntryPointLoadCommandForceOn ) {
+ fEntryPointLoadCommand = true;
+ if ( fEntryName == NULL )
+ fEntryName = "_main";
+ }
+ else if ( fEntryPointLoadCommandForceOff ) {
+ fNeedsThreadLoadCommand = true;
+ if ( fEntryName == NULL )
+ fEntryName = "start";
+ }
+ else {
+ // <rdar://problem/16310363> Linker should look for "_main" not "start" when building for sim regardless of min OS
+ if ( minOS(ld::mac10_8, ld::iOS_6_0) || fTargetIOSSimulator ) {
+ fEntryPointLoadCommand = true;
+ if ( fEntryName == NULL )
+ fEntryName = "_main";
+ if ( strcmp(fEntryName, "start") == 0 ) {
+ warning("Ignoring '-e start' because entry point 'start' is not used for the targeted OS version");
+ fEntryName = "_main";
+ }
+ }
+ else {
+ fNeedsThreadLoadCommand = true;
+ if ( fEntryName == NULL )
+ fEntryName = "start";
+ }
+ }
+ break;
+ case Options::kObjectFile:
+ case Options::kKextBundle:
+ case Options::kDynamicLibrary:
+ case Options::kDynamicBundle:
+ break;
+
+ case Options::kStaticExecutable:
+ case Options::kPreload:
+ case Options::kDyld:
+ fNeedsThreadLoadCommand = true;
+ if ( fEntryName == NULL )
+ fEntryName = "start"; // Perhaps these should have no default and require -e
+ break;
+ }
+
+ // add LC_SOURCE_VERSION
+ switch ( fOutputKind ) {
+ case Options::kDynamicExecutable:
+ case Options::kKextBundle:
+ case Options::kDynamicLibrary:
+ case Options::kDynamicBundle:
+ case Options::kDyld:
+ case Options::kStaticExecutable:
+ if ( fSourceVersionLoadCommandForceOn ) {
+ fSourceVersionLoadCommand = true;
+ }
+ else if ( fSourceVersionLoadCommandForceOff ) {
+ fSourceVersionLoadCommand = false;
+ }
+ else {
+ if ( minOS(ld::mac10_8, ld::iOS_6_0) ) {
+ fSourceVersionLoadCommand = true;
+ }
+ else
+ fSourceVersionLoadCommand = false;
+ }
+ break;
+ case Options::kObjectFile:
+ case Options::kPreload:
+ fSourceVersionLoadCommand = false;
+ break;
+ }
- // only dynamic final linked images should warn about use of commmons
- if ( fWarnCommons ) {
+ // if -sdk_version not on command line, infer from -syslibroot
+ if ( (fSDKVersion == 0) && (fSDKPaths.size() > 0) ) {
+ const char* sdkPath = fSDKPaths.front();
+ const char* end = &sdkPath[strlen(sdkPath)-1];
+ while ( !isdigit(*end) && (end > sdkPath) )
+ --end;
+ const char* start = end-1;
+ while ( (isdigit(*start) || (*start == '.')) && (start > sdkPath))
+ --start;
+ char sdkVersionStr[32];
+ int len = end-start+1;
+ if ( len > 2 ) {
+ strlcpy(sdkVersionStr, start+1, len);
+ fSDKVersion = parseVersionNumber32(sdkVersionStr);
+ }
+ }
+
+ // if -sdk_version and -syslibroot not used, but targeting MacOSX, use current OS version
+ if ( (fSDKVersion == 0) && (fMacVersionMin != ld::macVersionUnset) ) {
+ // special case if RC_ProjectName and MACOSX_DEPLOYMENT_TARGET are both set that sdkversion=minos
+ if ( getenv("RC_ProjectName") && getenv("MACOSX_DEPLOYMENT_TARGET") ) {
+ fSDKVersion = fMacVersionMin;
+ }
+ else {
+ int mib[2] = { CTL_KERN, KERN_OSRELEASE };
+ char kernVersStr[100];
+ size_t strlen = sizeof(kernVersStr);
+ if ( sysctl(mib, 2, kernVersStr, &strlen, NULL, 0) != -1 ) {
+ uint32_t kernVers = parseVersionNumber32(kernVersStr);
+ int minor = (kernVers >> 16) - 4; // kernel major version is 4 ahead of x in 10.x
+ fSDKVersion = 0x000A0000 + (minor << 8);
+ }
+ }
+ }
+
+ // allow trie based absolute symbols if targeting new enough OS
+ if ( fMakeCompressedDyldInfo ) {
+ if ( minOS(ld::mac10_9, ld::iOS_7_0) ) {
+ fAbsoluteSymbols = true;
+ }
+ }
+
+ // <rdar://problem/12959510> iOS main executables now default to 16KB page size
+ if ( (fIOSVersionMin != ld::iOSVersionUnset) && (fOutputKind == Options::kDynamicExecutable) ) {
+ // <rdar://problem/13070042> Only third party apps should have 16KB page segments by default
+ if ( fEncryptable ) {
+ if ( fSegmentAlignment == 4096 )
+ fSegmentAlignment = 4096*4;
+ }
+ }
+
+ // <rdar://problem/12258065> ARM64 needs 16KB page size for user land code
+ // <rdar://problem/15974532> make armv7[s] use 16KB pages in user land code for iOS 8 or later
+ if ( fSegmentAlignment == 4096 ) {
switch ( fOutputKind ) {
case Options::kDynamicExecutable:
case Options::kDynamicLibrary:
case Options::kDynamicBundle:
+ case Options::kDyld:
+ if ( ((fArchitecture == CPU_TYPE_ARM64)
+ )
+ || ((fArchitecture == CPU_TYPE_ARM) && min_iOS(ld::iOS_7_0)) ) {
+ fSegmentAlignment = 4096*4;
+ }
break;
- case Options::kPreload:
case Options::kStaticExecutable:
- case Options::kObjectFile:
- case Options::kDyld:
case Options::kKextBundle:
- fWarnCommons = false;
+ // <rdar://problem/14676611> 16KB segments for arm64 kexts
+ if ( ((fArchitecture == CPU_TYPE_ARM64)
+ )
+ && min_iOS(ld::iOS_9_0) ) {
+ fSegmentAlignment = 4096*4;
+ }
+ break;
+ case Options::kObjectFile:
+ case Options::kPreload:
break;
}
}
+
+
+
+ // <rdar://problem/13624134> linker should not convert dwarf unwind if .o file has compact unwind section
+ switch ( fOutputKind ) {
+ case Options::kDynamicExecutable:
+ case Options::kDynamicLibrary:
+ case Options::kDynamicBundle:
+ case Options::kDyld:
+ if ( fKeepDwarfUnwindForcedOn ) {
+ fKeepDwarfUnwind = true;
+ }
+ else if ( fKeepDwarfUnwindForcedOff ) {
+ fKeepDwarfUnwind = false;
+ }
+ else {
+ if ( minOS(ld::mac10_9, ld::iOS_7_0) )
+ fKeepDwarfUnwind = false;
+ else
+ fKeepDwarfUnwind = true;
+ }
+ break;
+ case Options::kKextBundle:
+ case Options::kStaticExecutable:
+ case Options::kObjectFile:
+ case Options::kPreload:
+ fKeepDwarfUnwind = true;
+ break;
+ }
- // Mac OS X 10.5 and iPhoneOS 2.0 support LC_REEXPORT_DYLIB
- if ( minOS(ObjectFile::ReaderOptions::k10_5, ObjectFile::ReaderOptions::k2_0) )
- fUseSimplifiedDylibReExports = true;
+ // Make sure -image_base matches alignment
+ uint64_t alignedBaseAddress = (fBaseAddress+fSegmentAlignment-1) & (-fSegmentAlignment);
+ if ( alignedBaseAddress != fBaseAddress ) {
+ warning("base address 0x%llX is not properly aligned. Changing it to 0x%llX", fBaseAddress, alignedBaseAddress);
+ fBaseAddress = alignedBaseAddress;
+ }
+
+ // If -dirty_data_list not specified, look in $SDKROOT/AppleInternal/DirtyDataFiles/<dylib>.dirty for dirty data list
+ if ( fSymbolsMovesData.empty() && fUseDataConstSegment && ( fDylibInstallName != NULL) && !fSDKPaths.empty() ) {
+ const char* dylibLeaf = strrchr(fDylibInstallName, '/');
+ if ( dylibLeaf ) {
+ char path[PATH_MAX];
+ strlcpy(path , fSDKPaths.front(), sizeof(path));
+ strlcat(path , "/AppleInternal/DirtyDataFiles", sizeof(path));
+ strlcat(path , dylibLeaf, sizeof(path));
+ strlcat(path , ".dirty", sizeof(path));
+ FileInfo info;
+ if ( info.checkFileExists(*this, path) )
+ addSymbolMove("__DATA_DIRTY", path, fSymbolsMovesData, "-dirty_data_list");
+ }
+ }
+
+ // <rdar://problem/20503811> Reduce the default alignment of structures/arrays to save memory in embedded systems
+ if ( fMaxDefaultCommonAlign == 0 ) {
+ if ( fOutputKind == Options::kPreload )
+ fMaxDefaultCommonAlign = 8;
+ else
+ fMaxDefaultCommonAlign = 15;
+ }
}
void Options::checkIllegalOptionCombinations()
// check -undefined setting
switch ( fUndefinedTreatment ) {
case kUndefinedError:
- case kUndefinedDynamicLookup:
// always legal
break;
+ case kUndefinedDynamicLookup:
+ switch (fPlatform) {
+ case kPlatformOSX:
+ break;
+ case kPlatformiOS:
+ case kPlatformWatchOS:
+ #if SUPPORT_APPLE_TV
+ case kPlatform_tvOS:
+ #endif
+ if ( fOutputKind != kKextBundle )
+ warning("-undefined dynamic_lookup is deprecated on %s", platformName(fPlatform));
+ break;
+ default:
+ break;
+ }
+ break;
case kUndefinedWarning:
case kUndefinedSuppress:
// requires flat namespace
const char* lastSlash = strrchr(info.path, '/');
if ( lastSlash == NULL )
lastSlash = info.path - 1;
- if ( strcmp(&lastSlash[1], subUmbrella) == 0 ) {
+ std::string path(&lastSlash[1]);
+ auto idx = path.find(".tbd", path.size() - 4);
+ if (idx != std::string::npos)
+ path.erase(idx);
+ if ( path == subUmbrella ) {
info.options.fReExport = true;
found = true;
+ fLinkSnapshot.recordSubUmbrella(info.path);
break;
}
}
if ( strncmp(&lastSlash[1], subLibrary, dot-lastSlash-1) == 0 ) {
info.options.fReExport = true;
found = true;
+ fLinkSnapshot.recordSubLibrary(info.path);
break;
}
}
}
// sync reader options
- if ( fNameSpace != kTwoLevelNameSpace )
- fReaderOptions.fFlatNamespace = true;
+ if ( fNameSpace != kTwoLevelNameSpace ) {
+ fFlatNamespace = true;
+ switch (fPlatform) {
+ case kPlatformOSX:
+ break;
+ case kPlatformiOS:
+ case kPlatformWatchOS:
+ #if SUPPORT_APPLE_TV
+ case Options::kPlatform_tvOS:
+ #endif
+ warning("-flat_namespace is deprecated on %s", platformName(fPlatform));
+ break;
+ default:
+ break;
+ }
+ }
+
// check -stack_addr
if ( fStackAddr != 0 ) {
switch (fArchitecture) {
case CPU_TYPE_I386:
- case CPU_TYPE_POWERPC:
case CPU_TYPE_ARM:
if ( fStackAddr > 0xFFFFFFFF )
throw "-stack_addr must be < 4G for 32-bit processes";
break;
- case CPU_TYPE_POWERPC64:
case CPU_TYPE_X86_64:
+ case CPU_TYPE_ARM64:
break;
}
if ( (fStackAddr & -4096) != fStackAddr )
if ( fStackSize != 0 ) {
switch (fArchitecture) {
case CPU_TYPE_I386:
- case CPU_TYPE_POWERPC:
- if ( fStackSize > 0xFFFFFFFF )
- throw "-stack_size must be < 4G for 32-bit processes";
- if ( fStackAddr == 0 ) {
- fStackAddr = 0xC0000000;
+ if ( fPlatform == kPlatformOSX ) {
+ if ( fStackSize > 0xFFFFFFFF )
+ throw "-stack_size must be < 4GB for 32-bit processes";
+ if ( fStackAddr == 0 )
+ fStackAddr = 0xC0000000;
+ if ( (fStackAddr > 0xB0000000) && ((fStackAddr-fStackSize) < 0xB0000000) )
+ warning("custom stack placement overlaps and will disable shared region");
+ }
+ else {
+ if ( fStackSize > 0x1F000000 )
+ throw "-stack_size must be < 496MB";
+ if ( fStackAddr == 0 )
+ fStackAddr = 0xC0000000;
}
- if ( (fStackAddr > 0xB0000000) && ((fStackAddr-fStackSize) < 0xB0000000) )
- warning("custom stack placement overlaps and will disable shared region");
break;
case CPU_TYPE_ARM:
- if ( fStackSize > 0x2F000000 )
- throw "-stack_size must be < 752MB";
+ if ( fStackSize > 0x1F000000 )
+ throw "-stack_size must be < 496MB";
if ( fStackAddr == 0 )
- fStackAddr = 0x2F000000;
- if ( fStackAddr > 0x30000000)
- throw "-stack_addr must be < 0x30000000 for arm";
- case CPU_TYPE_POWERPC64:
+ fStackAddr = 0x1F000000;
+ if ( fStackAddr > 0x20000000)
+ throw "-stack_addr must be < 0x20000000 for arm";
+ break;
case CPU_TYPE_X86_64:
- if ( fStackAddr == 0 ) {
- fStackAddr = 0x00007FFF5C000000LL;
+ if ( fPlatform == kPlatformOSX ) {
+ if ( fStackSize > 0x10000000000 )
+ throw "-stack_size must be <= 1TB";
+ if ( fStackAddr == 0 ) {
+ fStackAddr = 0x00007FFF5C000000LL;
+ }
+ }
+ else {
+ if ( fStackSize > 0x20000000 )
+ throw "-stack_size must be <= 512MB";
+ if ( fStackAddr == 0 ) {
+ fStackAddr = 0x120000000;
+ }
+ break;
+ case CPU_TYPE_ARM64:
+ if ( fStackSize > 0x20000000 )
+ throw "-stack_size must be <= 512MB";
+ if ( fStackAddr == 0 )
+ fStackAddr = 0x120000000;
}
break;
}
- if ( (fStackSize & -4096) != fStackSize )
- throw "-stack_size must be multiples of 4K";
+ if ( (fStackSize & (-fSegmentAlignment)) != fStackSize )
+ throwf("-stack_size must be multiple of segment alignment (%lldKB)", fSegmentAlignment/1024);
switch ( fOutputKind ) {
case Options::kDynamicExecutable:
case Options::kStaticExecutable:
case Options::kKextBundle:
throw "-stack_size option can only be used when linking a main executable";
}
+ if ( fStackSize > fStackAddr )
+ throwf("-stack_size (0x%08llX) must be smaller than -stack_addr (0x%08llX)", fStackSize, fStackAddr);
}
// check that -allow_stack_execute is only used with main executables
}
}
+ // check that -allow_heap_execute is only used with i386 main executables
+ if ( fDisableNonExecutableHeap ) {
+ if ( fArchitecture != CPU_TYPE_I386 )
+ throw "-allow_heap_execute option can only be used when linking for i386";
+ switch ( fOutputKind ) {
+ case Options::kDynamicExecutable:
+ // -allow_heap_execute only legal when building main executable
+ break;
+ case Options::kStaticExecutable:
+ case Options::kDynamicLibrary:
+ case Options::kDynamicBundle:
+ case Options::kObjectFile:
+ case Options::kDyld:
+ case Options::kPreload:
+ case Options::kKextBundle:
+ throw "-allow_heap_execute option can only be used when linking a main executable";
+ }
+ }
+
// check -client_name is only used when making a bundle or main executable
if ( fClientName != NULL ) {
switch ( fOutputKind ) {
throw "-dtrace can only be used when creating final linked images";
// check -d can only be used with -r
- if ( fReaderOptions.fMakeTentativeDefinitionsReal && (fOutputKind != Options::kObjectFile) )
+ if ( fMakeTentativeDefinitionsReal && (fOutputKind != Options::kObjectFile) )
throw "-d can only be used with -r";
// check that -root_safe is not used with -r
- if ( fReaderOptions.fRootSafe && (fOutputKind == Options::kObjectFile) )
+ if ( fRootSafe && (fOutputKind == Options::kObjectFile) )
throw "-root_safe cannot be used with -r";
// check that -setuid_safe is not used with -r
- if ( fReaderOptions.fSetuidSafe && (fOutputKind == Options::kObjectFile) )
+ if ( fSetuidSafe && (fOutputKind == Options::kObjectFile) )
throw "-setuid_safe cannot be used with -r";
+ // <rdar://problem/12781832> compiler driver no longer uses -objc_abi_version, it uses -ios_simulator_version_min instead
+ if ( !fObjCABIVersion1Override && !fObjCABIVersion2Override && fTargetIOSSimulator )
+ fObjCABIVersion2Override = true;
+
+ // rdar://problem/4718189 map ObjC class names to new runtime names
+ bool alterObjC1ClassNamesToObjC2 = false;
+ switch (fArchitecture) {
+ case CPU_TYPE_I386:
+ // i386 only uses new symbols when using objc2 ABI
+ if ( fObjCABIVersion2Override )
+ alterObjC1ClassNamesToObjC2 = true;
+ break;
+ case CPU_TYPE_X86_64:
+ case CPU_TYPE_ARM:
+ case CPU_TYPE_ARM64:
+ alterObjC1ClassNamesToObjC2 = true;
+ break;
+ }
+
// make sure all required exported symbols exist
std::vector<const char*> impliedExports;
- for (NameSet::iterator it=fExportSymbols.regularBegin(); it != fExportSymbols.regularEnd(); it++) {
+ for (NameSet::iterator it=fExportSymbols.regularBegin(); it != fExportSymbols.regularEnd(); ++it) {
const char* name = *it;
- // never export .eh symbols
const int len = strlen(name);
- if ( (strcmp(&name[len-3], ".eh") == 0) || (strncmp(name, ".objc_category_name_", 20) == 0) )
+ if ( (strcmp(&name[len-3], ".eh") == 0) || (strncmp(name, ".objc_category_name_", 20) == 0) ) {
+ // never export .eh symbols
warning("ignoring %s in export list", name);
- else
+ }
+ else if ( (fArchitecture == CPU_TYPE_I386) && !fObjCABIVersion2Override && (strncmp(name, "_OBJC_CLASS_$", 13) == 0) ) {
+ warning("ignoring Objc2 Class symbol %s in i386 export list", name);
+ fRemovedExports.insert(name);
+ }
+ else if ( alterObjC1ClassNamesToObjC2 && (strncmp(name, ".objc_class_name_", 17) == 0) ) {
+ // linking ObjC2 ABI, but have ObjC1 ABI name in export list. Change it to intended name
+ fRemovedExports.insert(name);
+ char* temp;
+ asprintf(&temp, "_OBJC_CLASS_$_%s", &name[17]);
+ impliedExports.push_back(temp);
+ asprintf(&temp, "_OBJC_METACLASS_$_%s", &name[17]);
+ impliedExports.push_back(temp);
+ }
+ else {
fInitialUndefines.push_back(name);
- if ( strncmp(name, ".objc_class_name_", 17) == 0 ) {
- // rdar://problem/4718189 map ObjC class names to new runtime names
- switch (fArchitecture) {
- case CPU_TYPE_POWERPC64:
- case CPU_TYPE_X86_64:
- case CPU_TYPE_ARM:
- char* temp;
- asprintf(&temp, "_OBJC_CLASS_$_%s", &name[17]);
- impliedExports.push_back(temp);
- asprintf(&temp, "_OBJC_METACLASS_$_%s", &name[17]);
- impliedExports.push_back(temp);
- break;
- }
}
}
- for (std::vector<const char*>::iterator it=impliedExports.begin(); it != impliedExports.end(); it++) {
+ fExportSymbols.remove(fRemovedExports);
+ for (std::vector<const char*>::iterator it=impliedExports.begin(); it != impliedExports.end(); ++it) {
const char* name = *it;
fExportSymbols.insert(name);
fInitialUndefines.push_back(name);
}
- // make sure that -init symbol exist
+ // make sure all required re-exported symbols exist
+ for (NameSet::iterator it=fReExportSymbols.regularBegin(); it != fReExportSymbols.regularEnd(); ++it) {
+ fInitialUndefines.push_back(*it);
+ }
+
+ // make sure that -init symbol exists
if ( fInitFunctionName != NULL )
fInitialUndefines.push_back(fInitFunctionName);
+ // make sure that entry symbol exists
+ switch ( fOutputKind ) {
+ case Options::kDynamicExecutable:
+ case Options::kStaticExecutable:
+ case Options::kDyld:
+ case Options::kPreload:
+ fInitialUndefines.push_back(fEntryName);
+ break;
+ case Options::kDynamicLibrary:
+ case Options::kDynamicBundle:
+ case Options::kObjectFile:
+ case Options::kKextBundle:
+ break;
+ }
+
+ // make sure every alias base exists
+ for (std::vector<AliasPair>::iterator it=fAliases.begin(); it != fAliases.end(); ++it) {
+ fInitialUndefines.push_back(it->realName);
+ }
+
// check custom segments
if ( fCustomSegmentAddresses.size() != 0 ) {
// verify no segment is in zero page
if ( fZeroPageSize != ULLONG_MAX ) {
for (std::vector<SegmentStart>::iterator it = fCustomSegmentAddresses.begin(); it != fCustomSegmentAddresses.end(); ++it) {
- if ( (it->address >= 0) && (it->address < fZeroPageSize) )
+ if ( it->address < fZeroPageSize )
throwf("-segaddr %s 0x%llX conflicts with -pagezero_size", it->name, it->address);
}
}
// zero page size not specified on command line, set default
switch (fArchitecture) {
case CPU_TYPE_I386:
- case CPU_TYPE_POWERPC:
- case CPU_TYPE_ARM:
+ case CPU_TYPE_ARM:
// first 4KB for 32-bit architectures
fZeroPageSize = 0x1000;
break;
- case CPU_TYPE_POWERPC64:
- // first 4GB for ppc64 on 10.5
- if ( fReaderOptions.fMacVersionMin >= ObjectFile::ReaderOptions::k10_5 )
- fZeroPageSize = 0x100000000ULL;
- else
- fZeroPageSize = 0x1000; // 10.4 dyld may not be able to handle >4GB zero page
- break;
+ case CPU_TYPE_ARM64:
case CPU_TYPE_X86_64:
// first 4GB for x86_64 on all OS's
fZeroPageSize = 0x100000000ULL;
}
}
+ // if main executable with custom base address, model zero page as custom segment
+ if ( (fOutputKind == Options::kDynamicExecutable) && (fBaseAddress != 0) && (fZeroPageSize != 0) ) {
+ SegmentStart seg;
+ seg.name = "__PAGEZERO";
+ seg.address = 0;;
+ fCustomSegmentAddresses.push_back(seg);
+ }
+
// -dead_strip and -r are incompatible
- if ( (fDeadStrip != kDeadStripOff) && (fOutputKind == Options::kObjectFile) )
+ if ( fDeadStrip && (fOutputKind == Options::kObjectFile) )
throw "-r and -dead_strip cannot be used together";
// can't use -rpath unless targeting 10.5 or later
if ( fRPaths.size() > 0 ) {
- if ( !minOS(ObjectFile::ReaderOptions::k10_5, ObjectFile::ReaderOptions::k2_0) )
+ if ( !minOS(ld::mac10_5, ld::iOS_2_0) )
throw "-rpath can only be used when targeting Mac OS X 10.5 or later";
switch ( fOutputKind ) {
case Options::kDynamicExecutable:
}
}
- // check -pie is only used when building a dynamic main executable for 10.5
if ( fPositionIndependentExecutable ) {
switch ( fOutputKind ) {
case Options::kDynamicExecutable:
+ // check -pie is only used when building a dynamic main executable for 10.5
+ if ( !minOS(ld::mac10_5, ld::iOS_4_2) ) {
+ if ( fIOSVersionMin == ld::iOSVersionUnset )
+ throw "-pie can only be used when targeting Mac OS X 10.5 or later";
+ else
+ throw "-pie can only be used when targeting iOS 4.2 or later";
+ }
+ break;
+ case Options::kStaticExecutable:
case Options::kPreload:
+ // -pie is ok with -static or -preload
break;
case Options::kDynamicLibrary:
case Options::kDynamicBundle:
warning("-pie being ignored. It is only used when linking a main executable");
+ fPositionIndependentExecutable = false;
break;
- case Options::kStaticExecutable:
case Options::kObjectFile:
case Options::kDyld:
case Options::kKextBundle:
throw "-pie can only be used when linking a main executable";
}
- if ( !minOS(ObjectFile::ReaderOptions::k10_5, ObjectFile::ReaderOptions::k2_0) )
- throw "-pie can only be used when targeting Mac OS X 10.5 or later";
}
// check -read_only_relocs is not used with x86_64
warning("-force_cpusubtype_ALL will become unsupported for ARM architectures");
}
}
+
+ // -reexported_symbols_list can only be used with -dynamiclib
+ if ( !fReExportSymbols.empty() ) {
+ if ( fOutputKind != Options::kDynamicLibrary )
+ throw "-reexported_symbols_list can only used used when created dynamic libraries";
+ if ( !minOS(ld::mac10_7, ld::iOS_4_2) )
+ throw "targeted OS version does not support -reexported_symbols_list";
+ }
+
+ // -dyld_env can only be used with main executables
+ if ( (fOutputKind != Options::kDynamicExecutable) && (fDyldEnvironExtras.size() != 0) )
+ throw "-dyld_env can only used used when created main executables";
+
+ // -segment_order can only be used with -preload or -static
+ if ( !fSegmentOrder.empty() && ((fOutputKind != Options::kPreload) && (fOutputKind != kStaticExecutable)) )
+ throw "-segment_order can only used used with -preload output";
+
+ // warn about bitcode option combinations
+ if ( !fBundleBitcode ) {
+ if ( fVerifyBitcode )
+ warning("-bitcode_verify is ignored without -bitcode_bundle");
+ else if ( fHideSymbols )
+ warning("-bitcode_hide_symbols is ignored without -bitcode_bundle");
+ }
+ if ( fReverseMapPath != NULL && !fHideSymbols ) {
+ throw "-bitcode_symbol_map can only be used with -bitcode_hide_symbols";
+ }
+ // auto fix up the process type for strip -S.
+ // when there is only one input and output type is object file, downgrade kBitcodeProcess to kBitcodeAsData.
+ if ( fOutputKind == Options::kObjectFile && fInputFiles.size() == 1 && fBitcodeKind == Options::kBitcodeProcess )
+ fBitcodeKind = Options::kBitcodeAsData;
+
+ // <rdar://problem/17598404> warn if building an embedded iOS dylib for pre-iOS 8
+ // <rdar://problem/18935714> How can we suppress "ld: warning: embedded dylibs/frameworks only run on iOS 8 or later" when building XCTest?
+ if ( (fOutputKind == Options::kDynamicLibrary) && (fIOSVersionMin != ld::iOSVersionUnset) && (fDylibInstallName != NULL) ) {
+ if ( !min_iOS(ld::iOS_8_0) && (fDylibInstallName[0] == '@') && !fEncryptableForceOff )
+ warning("embedded dylibs/frameworks only run on iOS 8 or later");
+ }
+
+
+ // produce nicer error when no input
+ if ( fInputFiles.empty() ) {
+ throw "no object files specified";
+ }
}
bool newLinker = false;
// build command line buffer in case ld crashes
+#if __MAC_OS_X_VERSION_MIN_REQUIRED >= 1070
+ CRSetCrashLogMessage(crashreporterBuffer);
+#endif
+ const char* srcRoot = getenv("SRCROOT");
+ if ( srcRoot != NULL ) {
+ strlcpy(crashreporterBuffer, "SRCROOT=", crashreporterBufferSize);
+ strlcat(crashreporterBuffer, srcRoot, crashreporterBufferSize);
+ strlcat(crashreporterBuffer, "\n", crashreporterBufferSize);
+ }
+#ifdef LD_VERS
+ strlcat(crashreporterBuffer, LD_VERS, crashreporterBufferSize);
+ strlcat(crashreporterBuffer, "\n", crashreporterBufferSize);
+#endif
+ strlcat(crashreporterBuffer, "ld ", crashreporterBufferSize);
for(int i=1; i < argc; ++i) {
- strlcat(crashreporterBuffer, argv[i], 1000);
- strlcat(crashreporterBuffer, " ", 1000);
+ strlcat(crashreporterBuffer, argv[i], crashreporterBufferSize);
+ strlcat(crashreporterBuffer, " ", crashreporterBufferSize);
}
for(int i=0; i < argc; ++i) {
// ld_classic does not understand this option, so remove it
for(int j=i; j < argc; ++j)
argv[j] = argv[j+1];
+ warning("using ld_classic");
this->gotoClassicLinker(argc-1, argv);
}
else if ( strcmp(arg, "-o") == 0 ) {
}
}
}
-
- // -dtrace only supported by new linker
- if( dtraceFound )
- return;
-
- if( archFound ) {
- switch ( fArchitecture ) {
- case CPU_TYPE_POWERPC:
- case CPU_TYPE_I386:
- case CPU_TYPE_ARM:
-// if ( staticFound && (rFound || !creatingMachKernel) ) {
- if ( (staticFound || kextFound) && !newLinker ) {
- // this environment variable will disable use of ld_classic for -static links
- if ( getenv("LD_NO_CLASSIC_LINKER_STATIC") == NULL ) {
- // ld_classic does not support -iphoneos_version_min, so change
- for(int j=0; j < argc; ++j) {
- if ( strcmp(argv[j], "-iphoneos_version_min") == 0) {
- argv[j] = "-macosx_version_min";
- if ( j < argc-1 )
- argv[j+1] = "10.5";
- break;
- }
- }
- // ld classic does not understand -kext (change to -static -r)
- if ( kextFound ) {
- for(int j=0; j < argc; ++j) {
- if ( strcmp(argv[j], "-kext") == 0)
- argv[j] = "-r";
- else if ( strcmp(argv[j], "-dynamic") == 0)
- argv[j] = "-static";
- }
- }
- this->gotoClassicLinker(argc, argv);
- }
- }
- break;
- }
- }
- else {
- // work around for VSPTool
- if ( staticFound )
- this->gotoClassicLinker(argc, argv);
- }
-
}
void Options::gotoClassicLinker(int argc, const char* argv[])
{
argv[0] = "ld_classic";
+ // ld_classic does not support -iphoneos_version_min, so change
+ for(int j=0; j < argc; ++j) {
+ if ( (strcmp(argv[j], "-iphoneos_version_min") == 0) || (strcmp(argv[j], "-ios_version_min") == 0) ) {
+ argv[j] = "-macosx_version_min";
+ if ( j < argc-1 )
+ argv[j+1] = "10.5";
+ break;
+ }
+ }
+ // ld classic does not understand -kext (change to -static -r)
+ for(int j=0; j < argc; ++j) {
+ if ( strcmp(argv[j], "-kext") == 0)
+ argv[j] = "-r";
+ else if ( strcmp(argv[j], "-dynamic") == 0)
+ argv[j] = "-static";
+ }
+ // ld classic does not understand -demangle
+ for(int j=0; j < argc; ++j) {
+ if ( strcmp(argv[j], "-demangle") == 0)
+ argv[j] = "-noprebind";
+ }
+ // in -v mode, print command line passed to ld_classic
+ for(int i=0; i < argc; ++i) {
+ if ( strcmp(argv[i], "-v") == 0 ) {
+ for(int j=0; j < argc; ++j)
+ printf("%s ", argv[j]);
+ printf("\n");
+ break;
+ }
+ }
char rawPath[PATH_MAX];
char path[PATH_MAX];
uint32_t bufSize = PATH_MAX;
fprintf(stderr, "can't exec ld_classic\n");
exit(1);
}
+
+
+// Note, returned string buffer is own by this function.
+// It should not be freed
+// It will be reused, so clients need to strdup() if they want
+// to use it long term.
+const char* Options::demangleSymbol(const char* sym) const
+{
+ // only try to demangle symbols if -demangle on command line
+ if ( !fDemangle )
+ return sym;
+
+ static size_t size = 1024;
+ static char* buff = (char*)malloc(size);
+
+#if DEMANGLE_SWIFT
+ // only try to demangle symbols that look like Swift symbols
+ if ( strncmp(sym, "__T", 3) == 0 ) {
+ size_t demangledSize = fnd_get_demangled_name(&sym[1], buff, size);
+ if ( demangledSize > size ) {
+ size = demangledSize+2;
+ buff = (char*)realloc(buff, size);
+ demangledSize = fnd_get_demangled_name(&sym[1], buff, size);
+ }
+ if ( demangledSize != 0 )
+ return buff;
+ }
+#endif
+
+ // only try to demangle symbols that look like C++ symbols
+ if ( strncmp(sym, "__Z", 3) != 0 )
+ return sym;
+
+ int status;
+ char* result = abi::__cxa_demangle(&sym[1], buff, &size, &status);
+ if ( result != NULL ) {
+ // if demangling successful, keep buffer for next demangle
+ buff = result;
+ return buff;
+ }
+ return sym;
+}
+
+
+void Options::dumpDependency(uint8_t opcode, const char* path) const
+{
+ if ( !this->dumpDependencyInfo() )
+ return;
+
+ // one time open() of -dependency_info file
+ if ( fDependencyFileDescriptor == -1 ) {
+ fDependencyFileDescriptor = open(this->dependencyInfoPath(), O_WRONLY | O_TRUNC | O_CREAT, 0666);
+ if ( fDependencyFileDescriptor == -1 )
+ throwf("Could not open or create -dependency_info file: %s", this->dependencyInfoPath());
+
+ // write header
+ uint8_t version = depLinkerVersion;
+ if ( write(fDependencyFileDescriptor, &version, 1) == -1 )
+ throwf("write() to -dependency_info failed, errno=%d", errno);
+ extern const char ldVersionString[];
+ if ( write(fDependencyFileDescriptor, ldVersionString, strlen(ldVersionString)+1) == -1 )
+ throwf("write() to -dependency_info failed, errno=%d", errno);
+ }
+
+ char realPath[PATH_MAX];
+ if ( path[0] != '/' ) {
+ if ( realpath(path, realPath) != NULL ) {
+ path = realPath;
+ }
+ }
+
+ if ( write(fDependencyFileDescriptor, &opcode, 1) == -1 )
+ throwf("write() to -dependency_info failed, errno=%d", errno);
+ if ( write(fDependencyFileDescriptor, path, strlen(path)+1) == -1 )
+ throwf("write() to -dependency_info failed, errno=%d", errno);
+
+ //fprintf(stderr, "0x%02X %s\n", opcode, path);
+}
+
+
+void Options::writeToTraceFile(const char* buffer, size_t len) const
+{
+ // one time open() of custom LD_TRACE_FILE
+ if ( fTraceFileDescriptor == -1 ) {
+ if ( fTraceOutputFile != NULL ) {
+ fTraceFileDescriptor = open(fTraceOutputFile, O_WRONLY | O_APPEND | O_CREAT, 0666);
+ if ( fTraceFileDescriptor == -1 )
+ throwf("Could not open or create trace file (errno=%d): %s", errno, fTraceOutputFile);
+ }
+ else {
+ fTraceFileDescriptor = fileno(stderr);
+ }
+ }
+
+ while (len > 0) {
+ ssize_t amountWritten = write(fTraceFileDescriptor, buffer, len);
+ if ( amountWritten == -1 )
+ /* Failure to write shouldn't fail the build. */
+ return;
+ buffer += amountWritten;
+ len -= amountWritten;
+ }
+}
+
+
projects / apple / ld64.git / blobdiff