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| author | H.J. Lu <hjl.tools@gmail.com> | 2024-12-15 21:24:14 +0800 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2024-12-22 13:02:30 +0800 |
| commit | 56cdc529fb553a307be459df3f1be90d1a231f0a (patch) | |
| tree | 7b5ecd8f50ce52ea637bfa6acfe0f7593bb306b2 /configure.ac | |
| parent | 90edd56c01bc50c55ef558871cf550199fc0f1a2 (diff) | |
| download | glibc-56cdc529fb553a307be459df3f1be90d1a231f0a.tar.xz glibc-56cdc529fb553a307be459df3f1be90d1a231f0a.zip | |
Add test-config-cflags-float-store for -ffloat-store
Clang doesn't support -ffloat-store:
clang: error: optimization flag '-ffloat-store' is not supported [-Werror,-Wignored-optimization-argument]
Define test-config-cflags-float-store for -ffloat-store and use it in
math/Makefile for testing.
Signed-off-by: H.J. Lu <hjl.tools@gmail.com>
Reviewed-by: Sam James <sam@gentoo.org>
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index d4c1c7c916..aa0ec5d7ff 100644 --- a/configure.ac +++ b/configure.ac @@ -1497,6 +1497,15 @@ LIBC_CONFIG_VAR([config-cflags-signaling-nans], [$libc_cv_cc_signaling_nans]) AC_SUBST(libc_cv_test_cc_signaling_nans) +dnl Determine if TEST_CC supports -ffloat-store. +LIBC_TRY_TEST_CC_OPTION([for -ffloat-store], + [-Werror -ffloat-store], + libc_cv_test_cc_float_store, + [libc_cv_test_cc_float_store="-ffloat-store"], + [libc_cv_test_cc_float_store=]) +LIBC_CONFIG_VAR([test-config-cflags-float-store], + [$libc_cv_test_cc_float_store]) + AC_CACHE_CHECK(if $CC accepts -fno-tree-loop-distribute-patterns with \ __attribute__ ((__optimize__)), libc_cv_cc_loop_to_function, [dnl cat > conftest.c <<EOF |