diff options
Diffstat (limited to 'configure.in')
| -rw-r--r-- | configure.in | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/configure.in b/configure.in index 11f78b0ec3..6ec23d5c1c 100644 --- a/configure.in +++ b/configure.in @@ -2116,6 +2116,22 @@ fi rm -f conftest.*]) AC_SUBST(pic_default) +# This test comes after sysdeps configure fragments, so that they can +# define the variable libc_mtune_example to tell us a valid -mtune=value +# argument that we can test with. +AC_SUBST(cc_mtune)cc_mtune=-mcpu +if test "x$libc_mtune_example" != x; then + AC_CACHE_CHECK(if compiler supports -mtune option, libc_cv_cc_mtune, [dnl + libc_cv_cc_mtune=no + save_CFLAGS="$CFLAGS" + CFLAGS="$CFLAGS -mtune=$libc_mtune_example" + AC_TRY_COMPILE(,,[libc_cv_cc_mtune=yes]) + ]) + if test "x$libc_cv_cc_mtune" = xyes; then + cc_mtune=-mtune + fi +fi + AC_SUBST(profile) AC_SUBST(omitfp) AC_SUBST(bounded) |