Module: libav Branch: master Commit: b2d5d6a7f20a255a5f3c9bf539cc507afd909ce5
Author: Diego Biurrun <[email protected]> Committer: Diego Biurrun <[email protected]> Date: Fri May 27 20:14:21 2016 +0200 build: Only enable symbol reduction if the compiler does proper DCE With compilers that do not support proper dead code elimination, like Sun C 5.12, linking fails due to missing references to unavailable, but also unused, symbols. Bug-Id: 895 --- configure | 18 +++++++++++++----- 1 file changed, 13 insertions(+), 5 deletions(-) diff --git a/configure b/configure index 1b5e017..e68cd3e 100755 --- a/configure +++ b/configure @@ -4831,17 +4831,25 @@ enabled xmm_clobber_test && -Wl,--wrap,sws_scale || disable xmm_clobber_test -echo "X { local: *; };" > $TMPV -if test_ldflags -Wl,${version_script},$TMPV; then - append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver' - check_cc <<EOF && enable symver_asm_label +check_ld <<EOF && enable proper_dce +extern const int array[512]; +static inline int func(void) { return array[0]; } +int main(void) { return 0; } +EOF + +if enabled proper_dce; then + echo "X { local: *; };" > $TMPV + if test_ldflags -Wl,${version_script},$TMPV; then + append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver' + check_cc <<EOF && enable symver_asm_label void ff_foo(void) __asm__ ("av_foo@VERSION"); void ff_foo(void) { ${inline_asm+__asm__($quotes);} } EOF - check_cc <<EOF && enable symver_gnu_asm + check_cc <<EOF && enable symver_gnu_asm __asm__(".symver ff_foo,av_foo@VERSION"); void ff_foo(void) {} EOF + fi fi if [ -z "$optflags" ]; then _______________________________________________ libav-commits mailing list [email protected] https://lists.libav.org/mailman/listinfo/libav-commits
