diff options
Diffstat (limited to 'build/autoconf/expandlibs.m4')
| -rw-r--r-- | build/autoconf/expandlibs.m4 | 33 |
1 files changed, 13 insertions, 20 deletions
diff --git a/build/autoconf/expandlibs.m4 b/build/autoconf/expandlibs.m4 index 70bc153e66..b0fc6caf95 100644 --- a/build/autoconf/expandlibs.m4 +++ b/build/autoconf/expandlibs.m4 @@ -14,32 +14,25 @@ dnl ======================================================== AC_CACHE_CHECK(what kind of list files are supported by the linker, moz_cv_expand_libs_list_style, [echo "int main() {return 0;}" > conftest.${ac_ext} - dnl Because BFD ld doesn't work with LTO + linker scripts, we - dnl must pass the LTO CFLAGS to the compile command, and the LTO - dnl LDFLAGS to all subsequent link commands. - dnl https://sourceware.org/bugzilla/show_bug.cgi?id=23600 - if AC_TRY_COMMAND(${CC-cc} -o conftest.${OBJ_SUFFIX} -c $MOZ_LTO_CFLAGS $CFLAGS $CPPFLAGS conftest.${ac_ext} 1>&5) && test -s conftest.${OBJ_SUFFIX}; then - echo "INPUT(conftest.${OBJ_SUFFIX})" > conftest.list + if AC_TRY_COMMAND(${CC-cc} -o conftest.${OBJ_SUFFIX} -c $CFLAGS $CPPFLAGS conftest.${ac_ext} 1>&5) && test -s conftest.${OBJ_SUFFIX}; then if test "$CC_TYPE" = "clang-cl"; then link="$LINKER -OUT:conftest${ac_exeext}" else link="${CC-cc} -o conftest${ac_exeext}" fi - if AC_TRY_COMMAND($link $MOZ_LTO_LDFLAGS $LDFLAGS conftest.list $LIBS 1>&5) && test -s conftest${ac_exeext}; then - moz_cv_expand_libs_list_style=linkerscript + echo "conftest.${OBJ_SUFFIX}" > conftest.list + if AC_TRY_COMMAND($link $LDFLAGS [-Wl,@conftest.list] $LIBS 1>&5) && test -s conftest${ac_exeext}; then + moz_cv_expand_libs_list_style=linkerlist + + dnl -filelist is for the OS X linker. We need to try -filelist first + dnl because clang understands @file, but may pass an oversized argument + dnl list to the linker depending on the contents of @file. + elif AC_TRY_COMMAND($link $LDFLAGS [-Wl,-filelist,conftest.list] $LIBS 1>&5) && test -s conftest${ac_exeext}; then + moz_cv_expand_libs_list_style=filelist + elif AC_TRY_COMMAND($link $LDFLAGS [@conftest.list] $LIBS 1>&5) && test -s conftest${ac_exeext}; then + moz_cv_expand_libs_list_style=list else - echo "conftest.${OBJ_SUFFIX}" > conftest.list - dnl -filelist is for the OS X linker. We need to try -filelist - dnl first because clang understands @file, but may pass an - dnl oversized argument list to the linker depending on the - dnl contents of @file. - if AC_TRY_COMMAND($link $MOZ_LTO_LDFLAGS $LDFLAGS [-Wl,-filelist,conftest.list] $LIBS 1>&5) && test -s conftest${ac_exeext}; then - moz_cv_expand_libs_list_style=filelist - elif AC_TRY_COMMAND($link $MOZ_LTO_LDFLAGS $LDFLAGS @conftest.list $LIBS 1>&5) && test -s conftest${ac_exeext}; then - moz_cv_expand_libs_list_style=list - else - AC_ERROR([Couldn't find one that works]) - fi + AC_ERROR([Couldn't find one that works]) fi else dnl We really don't expect to get here, but just in case |