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| author | Nobuyoshi Nakada <nobu@ruby-lang.org> | 2022-02-19 21:22:13 +0900 |
|---|---|---|
| committer | Nobuyoshi Nakada <nobu@ruby-lang.org> | 2022-02-19 23:32:52 +0900 |
| commit | 74707800588dc452d5a64e786b5c98d0e7586e74 (patch) | |
| tree | 32a03dd6c4fcf6b6c296daf0b37b1d61990ace66 /configure.ac | |
| parent | 131154f878b7f63277bd97520500414047a814fa (diff) | |
Check if `__assume` is supported
Notes
Notes:
Merged: https://github.com/ruby/ruby/pull/5577
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index 916e9a4e98..b63e395091 100644 --- a/configure.ac +++ b/configure.ac @@ -1679,6 +1679,18 @@ AS_IF([test "$GCC" = yes], [ AS_IF([test "$rb_cv_func___builtin_unreachable" = yes], [ AC_DEFINE(HAVE___BUILTIN_UNREACHABLE) ]) + + AC_CACHE_CHECK(for __assume, rb_cv_func___assume, + [RUBY_WERROR_FLAG([ + AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], + [[__assume(1);]])], + [rb_cv_func___assume=yes], + [rb_cv_func___assume=no]) + ]) + ]) + AS_IF([test "$rb_cv_func___assume" = yes], [ + AC_DEFINE(HAVE___ASSUME) + ]) } AC_CACHE_CHECK(for exported function attribute, rb_cv_func_exported, [ |