diff options
| author | akr <akr@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2013-02-08 12:20:27 +0000 |
|---|---|---|
| committer | akr <akr@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2013-02-08 12:20:27 +0000 |
| commit | 89ae338e97ab64a6c9af6726369e6cdc1b7db211 (patch) | |
| tree | 2ce90738ec5ab862699e3b24da0e09ad64063fc4 /configure.in | |
| parent | 123a3a486cb03275566115530d3f0289cf67924b (diff) | |
* configure.in: don't define ARCH_FLAG="-march=i486" if it causes
compilation problem.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39160 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'configure.in')
| -rw-r--r-- | configure.in | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/configure.in b/configure.in index 5850bbf488..ea57241230 100644 --- a/configure.in +++ b/configure.in @@ -1553,7 +1553,15 @@ AS_CASE(["$target_cpu-$target_os"], [[i[3-6]86*]], [ [rb_cv_gcc_compiler_cas=yes], [rb_cv_gcc_compiler_cas=no])]) if test "$rb_cv_gcc_compiler_cas" = no; then + unset rb_cv_gcc_compiler_cas ARCH_FLAG="-march=i486" + AC_CACHE_CHECK([for __sync_val_compare_and_swap with -march=i486], [rb_cv_gcc_compiler_cas], [ + AC_TRY_LINK([unsigned long atomic_var;], + [ + __sync_val_compare_and_swap(&atomic_var, 0, 1); + ], + [rb_cv_gcc_compiler_cas=yes], + [rb_cv_gcc_compiler_cas=no; unset ARCH_FLAG])]) fi]) AC_CACHE_CHECK(for signbit, rb_cv_have_signbit, |