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| author | nagachika <nagachika@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2013-03-20 13:54:43 +0000 |
|---|---|---|
| committer | nagachika <nagachika@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2013-03-20 13:54:43 +0000 |
| commit | d4e0396719a59efe924a6373de5914a54d9cb5b2 (patch) | |
| tree | 5dff0018678c4afe290f27f9e70d075112e55265 /configure.in | |
| parent | 7ff076d57b20be083de26e807a069ec5ed0eee38 (diff) | |
merge revision(s) 39160: [Backport #8080]
* configure.in: don't define ARCH_FLAG="-march=i486" if it causes
compilation problem.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@39843 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 cf53e019c1..7e8a506fa6 100644 --- a/configure.in +++ b/configure.in @@ -1567,7 +1567,15 @@ 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, |