On 26.10.2016 01:26, Michael Niedermayer wrote: > On Wed, Oct 26, 2016 at 01:16:13AM +0200, Andreas Cadhalpun wrote: >> configure | 7 ++++++- >> 1 file changed, 6 insertions(+), 1 deletion(-) >> 742684cf379693d08075d43fdfb75ed5e2e936c6 >> 0001-configure-make-sure-LTO-does-not-optimize-out-the-te.patch >> From bb289a0b2b0948afa99227bcff188301c1143624 Mon Sep 17 00:00:00 2001 >> From: Andreas Cadhalpun <andreas.cadhal...@googlemail.com> >> Date: Tue, 25 Oct 2016 19:09:46 +0200 >> Subject: [PATCH] configure: make sure LTO does not optimize out the test >> functions >> >> Fixes trac ticket #5909 >> >> Bud-Id: https://bugs.gentoo.org/show_bug.cgi?id=598054 >> Signed-off-by: Andreas Cadhalpun <andreas.cadhal...@googlemail.com> >> --- >> configure | 7 ++++++- >> 1 file changed, 6 insertions(+), 1 deletion(-) >> >> diff --git a/configure b/configure >> index 481f692..54faef1 100755 >> --- a/configure >> +++ b/configure >> @@ -1150,7 +1150,12 @@ check_func_headers(){ >> for func in $funcs; do >> echo "long check_$func(void) { return (long) $func; }" >> done >> - echo "int main(void) { return 0; }" >> + echo "int main(void) { int ret = 0;" >> + # LTO could optimize out the test functions without this >> + for func in $funcs; do >> + echo " ret |= ((intptr_t)check_$func) & 0xFFFF;" >> + done >> + echo "return ret; }" > > breaks configure > > i get this: > > ERROR: LoadLibrary/dlopen not found for avisynth
I forgot to include stdint.h. Fixed patch attached. Best regards, Andreas
>From 3f062e381b69c8e9b59f6caa700c23deaec53b45 Mon Sep 17 00:00:00 2001 From: Andreas Cadhalpun <andreas.cadhal...@googlemail.com> Date: Tue, 25 Oct 2016 19:09:46 +0200 Subject: [PATCH] configure: make sure LTO does not optimize out the test functions Fixes trac ticket #5909 Bud-Id: https://bugs.gentoo.org/show_bug.cgi?id=598054 Signed-off-by: Andreas Cadhalpun <andreas.cadhal...@googlemail.com> --- configure | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/configure b/configure index 481f692..5ee78eb 100755 --- a/configure +++ b/configure @@ -1147,10 +1147,16 @@ check_func_headers(){ for hdr in $headers; do print_include $hdr done + echo "#include <stdint.h>" for func in $funcs; do echo "long check_$func(void) { return (long) $func; }" done - echo "int main(void) { return 0; }" + echo "int main(void) { int ret = 0;" + # LTO could optimize out the test functions without this + for func in $funcs; do + echo " ret |= ((intptr_t)check_$func) & 0xFFFF;" + done + echo "return ret; }" } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers } -- 2.9.3
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