From cc7dedfb4de1f47b2a1713cb7068f9d6ffc33152 Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Mon, 4 Feb 2019 08:17:44 +0000
Subject: [PATCH] configure.ac: separate -std=gnu99 condition

Also necessary on mingw, cygwin, darwin and netbsd.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@67002 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 configure.ac | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/configure.ac b/configure.ac
index b7a6c33504..555f023b5c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -615,9 +615,11 @@ AS_IF([test "$GCC" = yes], [
     ],
     [cygwin*|darwin*|netbsd*], [
       # need lgamma_r(), finite()
-    ],
+    ])
+
+    # ANSI (no XCFLAGS because this is C only)
+    AS_CASE(["$target_os"],
     [solaris*], [
-      # ANSI (no XCFLAGS because this is C only)
       # Because "-std=gnu99" affects existance of functions on Solaris,
       # "-std=gnu99" will be appended to CPPFLAGS.
 	for ansi_options in -std=gnu99; do