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| author | Caroline Tice <cmtice@google.com> | 2016-03-25 16:19:29 -0700 |
|---|---|---|
| committer | Caroline Tice <cmtice@google.com> | 2016-03-25 16:19:29 -0700 |
| commit | 41c11c2a743ea85be67d0840dbbb6d5125bb8798 (patch) | |
| tree | 4f693e051b138f50cdfad035b29b01f4b6afbe07 /gcc-4.9/libatomic/acinclude.m4 | |
| parent | ac16f08b86701ecf70e32f4ead8db63d92603808 (diff) | |
| download | toolchain_gcc-41c11c2a743ea85be67d0840dbbb6d5125bb8798.tar.gz toolchain_gcc-41c11c2a743ea85be67d0840dbbb6d5125bb8798.tar.bz2 toolchain_gcc-41c11c2a743ea85be67d0840dbbb6d5125bb8798.zip | |
Add top-level flag, --enable-libatomic-ifuncs=[yes/no]
This CL adds a top-level configure flag, --enable-libatomic-ifuncs.
IF this is set to 'no', then libatomic will not be configured/built
to use IFUNC.
This is to fix https://buganizer.corp.google.com/issues/22699878
Change-Id: I76741fe854fc9c32a230b67c72920adfb00473ee
Diffstat (limited to 'gcc-4.9/libatomic/acinclude.m4')
| -rw-r--r-- | gcc-4.9/libatomic/acinclude.m4 | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/gcc-4.9/libatomic/acinclude.m4 b/gcc-4.9/libatomic/acinclude.m4 index a86e52b4f..34db650be 100644 --- a/gcc-4.9/libatomic/acinclude.m4 +++ b/gcc-4.9/libatomic/acinclude.m4 @@ -197,6 +197,11 @@ AC_DEFUN([LIBAT_CHECK_IFUNC], [ void *foo_sel(void) { return foo_alt; } int foo(void) __attribute__((ifunc("foo_sel")));], [return foo();], libat_cv_have_ifunc=yes, libat_cv_have_ifunc=no)]) + + if test $enable_libatomic_ifuncs = no; then + libat_cv_have_ifunc=no + fi + LIBAT_DEFINE_YESNO([HAVE_IFUNC], [$libat_cv_have_ifunc], [Define to 1 if the target supports __attribute__((ifunc(...))).]) ]) |