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| author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2022-03-07 15:09:53 -0300 |
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| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2022-11-01 09:46:08 -0300 |
| commit | 5c5a8b99cf96b71940e36a9db66d3a61bc315016 (patch) | |
| tree | 7396885b3487d9383bf477219a79ebcf68b64d9f /configure.ac | |
| parent | 6ee5a9767a245455720d39eeaa3ce136825e8a42 (diff) | |
| download | glibc-5c5a8b99cf96b71940e36a9db66d3a61bc315016.tar.gz glibc-5c5a8b99cf96b71940e36a9db66d3a61bc315016.tar.xz glibc-5c5a8b99cf96b71940e36a9db66d3a61bc315016.zip | |
Disable use of -fsignaling-nans if compiler does not support it
Reviewed-by: Fangrui Song <maskray@google.com>
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index 973fe59e81..c5c4b383a3 100644 --- a/configure.ac +++ b/configure.ac @@ -1488,6 +1488,16 @@ if test -n "$submachine"; then fi AC_SUBST(libc_cv_cc_submachine) +dnl Determine if compiler supports -fsignaling-nans +AC_CACHE_CHECK([for compiler option that -fsignaling-nans], + libc_cv_cc_signaling_nans, [dnl +LIBC_TRY_CC_OPTION([-Werror -fsignaling-nans], + [libc_cv_cc_signaling_nans=-fsignaling-nans], + [libc_cv_cc_signaling_nans=]) +]) +LIBC_CONFIG_VAR([config-cflags-signaling-nans], + [$libc_cv_cc_signaling_nans]) + 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 |