diff options
| author | shyouhei <shyouhei@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2018-10-18 09:21:05 +0000 |
|---|---|---|
| committer | shyouhei <shyouhei@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2018-10-18 09:21:05 +0000 |
| commit | 88a7271de4e6a8b32bbbaa83eca84bf71c888f65 (patch) | |
| tree | baa6c59e4716f3ae1f36617799a33d42abe24d86 /configure.ac | |
| parent | 8183cd2f1df71d660d3cbc633c06b6e4c77ad91b (diff) | |
configure.ac: do not overwrite -std=
Set -std=gnu99 only when no such compiler flag(s) are set in any
compiler-related environment variables. This enables users to
specify something more modern, say, -std=c11.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@65154 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index e887ddd3bf..50247ca545 100644 --- a/configure.ac +++ b/configure.ac @@ -626,6 +626,9 @@ AS_IF([test "$GCC" = yes], [ ], [ # ANSI (no XCFLAGS because this is C only) + rb_tmp_std_check=`echo $CC $CFLAGS $optflags $warnflags $debugflags | fgrep std= | tr -d '\015'` + AS_IF([test "x$rb_tmp_std_check" = "x"], + [ for ansi_options in -std=gnu99; do RUBY_TRY_CFLAGS(${ansi_options}, [ RUBY_APPEND_OPTIONS(warnflags, ${ansi_options}) @@ -633,6 +636,7 @@ AS_IF([test "$GCC" = yes], [ ], [ansi_options=]) test "x${ansi_options}" = x || break done + ]) ]) # suppress annoying -Wstrict-overflow warnings |