X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/957685357920ac9bd95c8355d2776972235f562f..79bcf6f487b0cacc6ab9b9fb91ae6ead9efd4c8a:/acinclude.m4 diff --git a/acinclude.m4 b/acinclude.m4 index dcd3a5ecf7..6a27a120d7 100644 --- a/acinclude.m4 +++ b/acinclude.m4 @@ -227,6 +227,72 @@ AC_DEFUN([WX_CPP_EXPLICIT], fi ]) +dnl --------------------------------------------------------------------------- +dnl WX_CHECK_FUNCS(FUNCTIONS..., +dnl [ACTION-IF-FOUND], +dnl [ACTION-IF-NOT-FOUND], +dnl [EXTRA-DEFINES-AND-INCLUDES], +dnl [EXTRA-TEST-CODE]) +dnl +dnl Checks that the functions listed in FUNCTIONS exist in the headers and the +dnl libs. For each function, if it is found then defines 'HAVE_FUNCTION' and +dnl executes ACTION-IF-FOUND, otherwise executes ACTION-IF-NOT-FOUND. +dnl +dnl The code from EXTRA-DEFINES-AND-INCLUDES is inserted into the test before +dnl the default headers are included, and EXTRA-TEST-CODE is inserted into +dnl the main() function after the default test for existence. +dnl +dnl Examples: +dnl # the simple case +dnl WX_CHECK_FUNCS(stat) +dnl # use break to finish the loop early +dnl WX_CHECK_FUNCS(mkstemp mktemp, break) +dnl # extra defines +dnl WX_CHECK_FUNCS(strtok_r, [], [], [#define _RREENTRANT]) +dnl # extra includes +dnl WX_CHECK_FUNCS(swprintf, [], [], [#include ]) +dnl # checking the signature with extra test code +dnl WX_CHECK_FUNCS(gettimeofday, [], [], [#include ] +dnl [struct timeval tv; struct timezone tz; gettimeofday(&tv, &tz)]) +dnl --------------------------------------------------------------------------- + +AC_DEFUN([WX_CHECK_FUNCS], +[ + for wx_func in $1 + do + AC_CACHE_CHECK( + [for $wx_func], + [wx_cv_func_$wx_func], + [ + AC_LINK_IFELSE( + [ + AC_LANG_PROGRAM( + [ + $4 + AC_INCLUDES_DEFAULT + ], + [ + #ifndef $wx_func + &$wx_func; + #endif + $5 + ]) + ], + [eval wx_cv_func_$wx_func=yes], + [eval wx_cv_func_$wx_func=no]) + ]) + + if eval test \$wx_cv_func_$wx_func = yes + then + AC_DEFINE_UNQUOTED([HAVE_`echo $wx_func | tr 'a-z' 'A-Z'`]) + $2 + else + : + $3 + fi + done +]) + dnl --------------------------------------------------------------------------- dnl a slightly better AC_C_BIGENDIAN macro which allows cross-compiling dnl --------------------------------------------------------------------------- @@ -338,7 +404,7 @@ dnl this macro checks for a command line argument and caches the result dnl usage: WX_ARG_WITH(option, helpmessage, variable-name, [withstring]) AC_DEFUN([WX_ARG_WITH], [ - withstring=$4 + withstring=$4 AC_MSG_CHECKING([for --${withstring:-with}-$1]) no_cache=0 AC_ARG_WITH($1, [$2], @@ -380,7 +446,7 @@ dnl message when running configure instead of the default "checking for dnl --enable-foo" one whih is useful for the options enabled by default AC_DEFUN([WX_ARG_ENABLE], [ - enablestring=$4 + enablestring=$4 AC_MSG_CHECKING([for --${enablestring:-enable}-$1]) no_cache=0 AC_ARG_ENABLE($1, [$2], @@ -422,12 +488,12 @@ dnl WX_ARG_ENABLE_PARAM(option, helpmessage, variable-name, enablestring) dnl dnl Example: dnl WX_ARG_ENABLE_PARAM(foo, [[ --enable-foo[=bar] use foo]], wxUSE_FOO) -dnl +dnl dnl --enable-foo wxUSE_FOO=yes dnl --disable-foo wxUSE_FOO=no dnl --enable-foo=bar wxUSE_FOO=bar dnl value from configarg.cache or wxUSE_FOO=no -dnl +dnl AC_DEFUN([WX_ARG_ENABLE_PARAM], [ enablestring=$4 @@ -469,81 +535,80 @@ dnl call WX_VERSIONED_SYMBOLS(versionfile) dnl --------------------------------------------------------------------------- AC_DEFUN([WX_VERSIONED_SYMBOLS], [ - found_versioning=no - - dnl FIXME - doesn't work, Solaris linker doesn't accept wildcards - dnl in the script. - dnl dnl Check for known non-gcc cases: - dnl case "${host}" in - dnl *-*-solaris2* ) - dnl if test "x$GCC" != "xyes" ; then - dnl LDFLAGS_VERSIONING="-M $1" - dnl found_versioning=yes - dnl fi - dnl ;; - dnl esac - - dnl Generic check for GCC or GCC-like behaviour (Intel C++, GCC): - if test $found_versioning = no ; then - AC_CACHE_CHECK([if the linker accepts --version-script], wx_cv_version_script, - [ - echo "VER_1 { *; };" >conftest.sym - echo "int main() { return 0; }" >conftest.cpp - - if AC_TRY_COMMAND([ - $CXX -o conftest.output $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.cpp - -Wl,--version-script,conftest.sym >/dev/null 2>conftest.stderr]) ; then - if test -s conftest.stderr ; then - wx_cv_version_script=no - else - wx_cv_version_script=yes - fi - else - wx_cv_version_script=no - fi - - dnl There's a problem in some old linkers with --version-script that - dnl can cause linking to fail when you have objects with vtables in - dnl libs 3 deep. This is known to happen in netbsd and openbsd with - dnl ld 2.11.2. - dnl - dnl To test for this we need to make some shared libs and - dnl unfortunately we can't be sure of the right way to do that. If the - dnl first two compiles don't succeed then it looks like the test isn't - dnl working and the result is ignored, but if OTOH the first two - dnl succeed but the third does not then the bug has been detected and - dnl the --version-script flag is dropped. - if test $wx_cv_version_script = yes - then - echo "struct B { virtual ~B() { } }; \ - struct D : public B { }; \ - void F() { D d; }" > conftest.cpp - - if AC_TRY_COMMAND([ - $CXX -shared -fPIC -o conftest1.output $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.cpp - -Wl,--version-script,conftest.sym >/dev/null 2>/dev/null]) && - AC_TRY_COMMAND([ - $CXX -shared -fPIC -o conftest2.output $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.cpp - -Wl,--version-script,conftest.sym conftest1.output >/dev/null 2>/dev/null]) - then - if AC_TRY_COMMAND([ - $CXX -shared -fPIC -o conftest3.output $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.cpp - -Wl,--version-script,conftest.sym conftest2.output conftest1.output >/dev/null 2>/dev/null]) - then - wx_cv_version_script=yes - else - wx_cv_version_script=no + case "${host}" in + *-*-cygwin* | *-*-mingw* ) + dnl although ld does support version script option on these + dnl platforms, it doesn't make much sense to use it under Win32 + dnl and, moreover, this breaks linking because of a bug in handling + dnl paths in -Wl,--version-script,path option (if we ever do need + dnl to use it for cygwin/mingw32, keep in mind that replacing last + dnl comma with the equal sign works) so + dnl simply disable it + wx_cv_version_script=no + ;; + + *) + AC_CACHE_CHECK([if the linker accepts --version-script], wx_cv_version_script, + [ + echo "VER_1 { *; };" >conftest.sym + echo "int main() { return 0; }" >conftest.cpp + + if AC_TRY_COMMAND([ + $CXX -o conftest.output $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.cpp + -Wl,--version-script,conftest.sym >/dev/null 2>conftest.stderr]) ; then + if test -s conftest.stderr ; then + wx_cv_version_script=no + else + wx_cv_version_script=yes + fi + else + wx_cv_version_script=no + fi + + dnl There's a problem in some old linkers with --version-script that + dnl can cause linking to fail when you have objects with vtables in + dnl libs 3 deep. This is known to happen in netbsd and openbsd with + dnl ld 2.11.2. + dnl + dnl To test for this we need to make some shared libs and + dnl unfortunately we can't be sure of the right way to do that. If the + dnl first two compiles don't succeed then it looks like the test isn't + dnl working and the result is ignored, but if OTOH the first two + dnl succeed but the third does not then the bug has been detected and + dnl the --version-script flag is dropped. + if test $wx_cv_version_script = yes + then + echo "struct B { virtual ~B() { } }; \ + struct D : public B { }; \ + void F() { D d; }" > conftest.cpp + + if AC_TRY_COMMAND([ + $CXX -shared -fPIC -o conftest1.output $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.cpp + -Wl,--version-script,conftest.sym >/dev/null 2>/dev/null]) && + AC_TRY_COMMAND([ + $CXX -shared -fPIC -o conftest2.output $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.cpp + -Wl,--version-script,conftest.sym conftest1.output >/dev/null 2>/dev/null]) + then + if AC_TRY_COMMAND([ + $CXX -shared -fPIC -o conftest3.output $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.cpp + -Wl,--version-script,conftest.sym conftest2.output conftest1.output >/dev/null 2>/dev/null]) + then + wx_cv_version_script=yes + else + wx_cv_version_script=no + fi + fi + fi + + rm -f conftest.output conftest.stderr conftest.sym conftest.cpp + rm -f conftest1.output conftest2.output conftest3.output + ]) + + if test $wx_cv_version_script = yes ; then + LDFLAGS_VERSIONING="-Wl,--version-script,$1" fi - fi - fi - - rm -f conftest.output conftest.stderr conftest.sym conftest.cpp - rm -f conftest1.output conftest2.output conftest3.output - ]) - if test $wx_cv_version_script = yes ; then - LDFLAGS_VERSIONING="-Wl,--version-script,$1" - fi - fi + ;; + esac ])