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| author | H.J. Lu <hjl.tools@gmail.com> | 2024-12-19 12:08:00 +0800 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2024-12-22 12:54:44 +0800 |
| commit | f5fb9fa011f242bfd8c291fe876532ebd252397e (patch) | |
| tree | 20230ef83afcc97d09a084c863d3b4fe6353f5e9 /sysdeps | |
| parent | 9151ecbb5e5a3d2ee30826ab9cce3aa5575e3a70 (diff) | |
| download | glibc-f5fb9fa011f242bfd8c291fe876532ebd252397e.zip glibc-f5fb9fa011f242bfd8c291fe876532ebd252397e.tar.gz glibc-f5fb9fa011f242bfd8c291fe876532ebd252397e.tar.bz2 | |
x86: Include test-flt-eval-method-387 if -mfpmath=387 works
Since Clang doesn't support -mfpmath=387 on x86-64, on x86, include
test-flt-eval-method-387 only if -mfpmath=387 works.
Signed-off-by: H.J. Lu <hjl.tools@gmail.com>
Reviewed-by: Sam James <sam@gentoo.org>
Diffstat (limited to 'sysdeps')
| -rw-r--r-- | sysdeps/x86/configure | 34 | ||||
| -rw-r--r-- | sysdeps/x86/configure.ac | 10 | ||||
| -rw-r--r-- | sysdeps/x86/fpu/Makefile | 4 |
3 files changed, 47 insertions, 1 deletions
diff --git a/sysdeps/x86/configure b/sysdeps/x86/configure index a6d3777..c7ea9ac 100644 --- a/sysdeps/x86/configure +++ b/sysdeps/x86/configure @@ -175,6 +175,40 @@ x86-isa-level-3-or-above = 3 4" config_vars="$config_vars enable-x86-isa-level = $libc_cv_include_x86_isa_level" + + +saved_CC="$CC" +CC="$TEST_CC" +{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking if -mfpmath=387 works in testing" >&5 +printf %s "checking if -mfpmath=387 works in testing... " >&6; } +if test ${libc_cv_have_test_cc_cflags_mfpmath_387+y} +then : + printf %s "(cached) " >&6 +else case e in #( + e) if { ac_try='${CC-cc} -c -Werror -mfpmath=387 -xc /dev/null -S -o /dev/null' + { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5 + (eval $ac_try) 2>&5 + ac_status=$? + printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; }; } +then : + libc_cv_have_test_cc_cflags_mfpmath_387=yes +else case e in #( + e) libc_cv_have_test_cc_cflags_mfpmath_387=no + ;; +esac +fi ;; +esac +fi +{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $libc_cv_have_test_cc_cflags_mfpmath_387" >&5 +printf "%s\n" "$libc_cv_have_test_cc_cflags_mfpmath_387" >&6; } + +CC="$saved_CC" + + +config_vars="$config_vars +have-test-cc-cflags-mfpmath-387 = $libc_cv_have_test_cc_cflags_mfpmath_387" + printf "%s\n" "#define SUPPORT_STATIC_PIE 1" >>confdefs.h diff --git a/sysdeps/x86/configure.ac b/sysdeps/x86/configure.ac index 8a259d3..031f917 100644 --- a/sysdeps/x86/configure.ac +++ b/sysdeps/x86/configure.ac @@ -120,5 +120,15 @@ LIBC_CONFIG_VAR([have-x86-isa-level], [$libc_cv_have_x86_isa_level]) LIBC_CONFIG_VAR([x86-isa-level-3-or-above], [3 4]) LIBC_CONFIG_VAR([enable-x86-isa-level], [$libc_cv_include_x86_isa_level]) +dnl Check if TEST_CC supports -mfpmath=387 +LIBC_TRY_TEST_CC_OPTION([if -mfpmath=387 works], + [-c -Werror -mfpmath=387], + libc_cv_have_test_cc_cflags_mfpmath_387, + [libc_cv_have_test_cc_cflags_mfpmath_387=yes], + [libc_cv_have_test_cc_cflags_mfpmath_387=no] +) +LIBC_CONFIG_VAR(have-test-cc-cflags-mfpmath-387, + $libc_cv_have_test_cc_cflags_mfpmath_387) + dnl Static PIE is supported. AC_DEFINE(SUPPORT_STATIC_PIE) diff --git a/sysdeps/x86/fpu/Makefile b/sysdeps/x86/fpu/Makefile index 705dd9d..91b2444 100644 --- a/sysdeps/x86/fpu/Makefile +++ b/sysdeps/x86/fpu/Makefile @@ -8,9 +8,11 @@ tests += \ test-fenv-sse \ test-fenv-sse-2 \ test-fenv-x87 \ - test-flt-eval-method-387 \ test-flt-eval-method-sse \ # tests +ifeq ($(have-test-cc-cflags-mfpmath-387),yes) +tests += test-flt-eval-method-387 +endif CFLAGS-test-fenv-sse.c += -msse2 -mfpmath=sse CFLAGS-test-fenv-clear-sse.c += -msse2 -mfpmath=sse CFLAGS-test-fenv-sse-2.c += -msse2 -mfpmath=sse |