#include <AvailabilityMacros.h>
#include "Options.h"
-
#include "ld.hpp"
#include "Bitcode.hpp"
#include "InputFiles.h"
#include "Resolver.h"
#include "parsers/lto_file.h"
+#include "configure.h"
+
+#define VAL(x) #x
+#define STRINGIFY(x) VAL(x)
namespace ld {
namespace tool {
_internal.cpuSubType = _options.subArchitecture();
_internal.minOSVersion = _options.minOSversion();
- _internal.derivedPlatformLoadCommand = 0;
+ _internal.derivedPlatform = 0;
// In -r mode, look for -linker_option additions
if ( _options.outputKind() == Options::kObjectFile ) {
doLinkerOption(*it, "command line");
}
}
+#ifdef LD64_VERSION_NUM
+ uint32_t packedNum = Options::parseVersionNumber32(STRINGIFY(LD64_VERSION_NUM));
+ uint64_t combined = (uint64_t)TOOL_LD << 32 | packedNum;
+ _internal.toolsVersions.insert(combined);
+#endif
}
void Resolver::buildAtomList()
// No bitcode section, figure out if the object file comes from LTO/compiler static library
switch ( _options.platform() ) {
case Options::kPlatformOSX:
+ case Options::kPlatform_bridgeOS:
case Options::kPlatformUnknown:
warning("all bitcode will be dropped because '%s' was built without bitcode. "
"You must rebuild it with bitcode enabled (Xcode setting ENABLE_BITCODE), obtain an updated library from the vendor, or disable bitcode for this target. ", file.path());
Options::userReadableSwiftVersion(file.swiftVersion(), fileVersion);
Options::userReadableSwiftVersion(_internal.swiftVersion, otherVersion);
if ( file.swiftVersion() > _internal.swiftVersion ) {
- throwf("%s compiled with newer version of Swift language (%s) than previous files (%s)",
- file.path(), fileVersion, otherVersion);
+ if ( _options.warnOnSwiftABIVersionMismatches() ) {
+ warning("%s compiled with newer version of Swift language (%s) than previous files (%s)",
+ file.path(), fileVersion, otherVersion);
+ } else {
+ throwf("%s compiled with newer version of Swift language (%s) than previous files (%s)",
+ file.path(), fileVersion, otherVersion);
+ }
}
else {
- throwf("%s compiled with older version of Swift language (%s) than previous files (%s)",
- file.path(), fileVersion, otherVersion);
+ if ( _options.warnOnSwiftABIVersionMismatches() ) {
+ warning("%s compiled with older version of Swift language (%s) than previous files (%s)",
+ file.path(), fileVersion, otherVersion);
+ } else {
+ throwf("%s compiled with older version of Swift language (%s) than previous files (%s)",
+ file.path(), fileVersion, otherVersion);
+ }
}
}
}
// remember if any .o file did not have MH_SUBSECTIONS_VIA_SYMBOLS bit set
if ( ! objFile->canScatterAtoms() )
_internal.allObjectFilesScatterable = false;
-
+
+ // remember if building for profiling (so we don't warn about initializers)
+ if ( objFile->hasllvmProfiling() )
+ _havellvmProfiling = true;
+
// update minOSVersion off all .o files
uint32_t objMinOS = objFile->minOSVersion();
if ( !objMinOS )
_internal.objectFileFoundWithNoVersion = true;
-
- uint32_t objPlatformLC = objFile->platformLoadCommand();
- if ( (objPlatformLC != 0) && (_internal.derivedPlatformLoadCommand == 0) && (_options.outputKind() == Options::kObjectFile) )
- _internal.derivedPlatformLoadCommand = objPlatformLC;
-
if ( (_options.outputKind() == Options::kObjectFile) && (objMinOS > _internal.minOSVersion) )
_internal.minOSVersion = objMinOS;
+ uint32_t objPlatform = objFile->platform();
+ if ( (objPlatform != 0) && (_options.outputKind() == Options::kObjectFile) && (_internal.derivedPlatform == 0) )
+ _internal.derivedPlatform = objPlatform;
+
+ // update set of known tools used
+ for (const std::pair<uint32_t,uint32_t>& entry : objFile->toolVersions()) {
+ uint64_t combined = (uint64_t)entry.first << 32 | entry.second;
+ _internal.toolsVersions.insert(combined);
+ }
+
// update cpu-sub-type
cpu_subtype_t nextObjectSubType = file.cpuSubType();
switch ( _options.architecture() ) {
}
break;
+ case CPU_TYPE_ARM64:
+ if ( _options.subArchitecture() != nextObjectSubType ) {
+ if ( _options.allowSubArchitectureMismatches() ) {
+ warning("object file %s was built for different arm64 sub-type (%d) than link command line (%d)",
+ file.path(), nextObjectSubType, _options.subArchitecture());
+ }
+ else {
+ throwf("object file %s was built for different arm64 sub-type (%d) than link command line (%d)",
+ file.path(), nextObjectSubType, _options.subArchitecture());
+ }
+ }
+ break;
+
case CPU_TYPE_I386:
_internal.cpuSubType = CPU_SUBTYPE_I386_ALL;
break;
strncmp(tcLibPath, tempPath, strlen(tcLibPath)) != 0 ) {
switch ( _options.platform() ) {
case Options::kPlatformOSX:
+ case Options::kPlatform_bridgeOS:
case Options::kPlatformUnknown:
warning("all bitcode will be dropped because '%s' was built without bitcode. "
"You must rebuild it with bitcode enabled (Xcode setting ENABLE_BITCODE), obtain an updated library from the vendor, or disable bitcode for this target.", file.path());
Options::userReadableSwiftVersion(file.swiftVersion(), fileVersion);
Options::userReadableSwiftVersion(_internal.swiftVersion, otherVersion);
if ( file.swiftVersion() > _internal.swiftVersion ) {
- throwf("%s compiled with newer version of Swift language (%s) than previous files (%s)",
- file.path(), fileVersion, otherVersion);
+ if ( _options.warnOnSwiftABIVersionMismatches() ) {
+ warning("%s compiled with newer version of Swift language (%s) than previous files (%s)",
+ file.path(), fileVersion, otherVersion);
+ } else {
+ throwf("%s compiled with newer version of Swift language (%s) than previous files (%s)",
+ file.path(), fileVersion, otherVersion);
+ }
}
else {
- throwf("%s compiled with older version of Swift language (%s) than previous files (%s)",
- file.path(), fileVersion, otherVersion);
+ if ( _options.warnOnSwiftABIVersionMismatches() ) {
+ warning("%s compiled with older version of Swift language (%s) than previous files (%s)",
+ file.path(), fileVersion, otherVersion);
+ } else {
+ throwf("%s compiled with older version of Swift language (%s) than previous files (%s)",
+ file.path(), fileVersion, otherVersion);
+ }
}
}
}
if ( atom.section().type() == ld::Section::typeTempAlias )
_haveAliases = true;
+ // error or warn about initializers
+ if ( (atom.section().type() == ld::Section::typeInitializerPointers) && !_havellvmProfiling ) {
+ switch ( _options.initializersTreatment() ) {
+ case Options::kError:
+ throwf("static initializer found in '%s'",atom.safeFilePath());
+ case Options::kWarning:
+ warning("static initializer found in '%s'. Use -no_inits to make this an error. Use -no_warn_inits to suppress warning",atom.safeFilePath());
+ break;
+ default:
+ break;
+ }
+ }
+
if ( _options.deadCodeStrip() ) {
// add to set of dead-strip-roots, all symbols that the compiler marks as don't strip
if ( atom.dontDeadStrip() )
// and re-compute dead code
this->deadStripOptimize(true);
}
-
+
// <rdar://problem/12386559> if -exported_symbols_list on command line, re-force scope
if ( _options.hasExportMaskList() ) {
for (std::vector<const ld::Atom*>::const_iterator it=_atoms.begin(); it != _atoms.end(); ++it) {
// check new code does not override some dylib
this->checkDylibSymbolCollisions();
+
+ // <rdar://problem/33853815> remove undefs from LTO objects that gets optimized away
+ std::unordered_set<const ld::Atom*> mustPreserve;
+ if ( _internal.classicBindingHelper != NULL )
+ mustPreserve.insert(_internal.classicBindingHelper);
+ if ( _internal.compressedFastBinderProxy != NULL )
+ mustPreserve.insert(_internal.compressedFastBinderProxy);
+ if ( _internal.lazyBindingHelper != NULL )
+ mustPreserve.insert(_internal.lazyBindingHelper);
+ if ( const ld::Atom* entry = this->entryPoint(true) )
+ mustPreserve.insert(entry);
+ for (Options::UndefinesIterator uit=_options.initialUndefinesBegin(); uit != _options.initialUndefinesEnd(); ++uit) {
+ SymbolTable::IndirectBindingSlot slot = _symbolTable.findSlotForName(*uit);
+ if ( _internal.indirectBindingTable[slot] != NULL )
+ mustPreserve.insert(_internal.indirectBindingTable[slot]);
+ }
+ _symbolTable.removeDeadUndefs(_atoms, mustPreserve);
}
}
projects / apple / ld64.git / blobdiff