From c736714de11f9d8dd90cb5f4d6b39fd73054aabc Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date: Wed, 27 Jan 2021 14:58:34 +0900
Subject: [PATCH] Clear unexpanded `mjit_std_cflag`

---
 configure.ac | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/configure.ac b/configure.ac
index 371cbf3da0..60f57e461d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2718,9 +2718,9 @@ AC_SUBST(ARCH_FLAG)dnl
 AC_SUBST(MJIT_HEADER_FLAGS)dnl
 AC_SUBST(MJIT_HEADER_INSTALL_DIR)dnl
 AC_SUBST(MJIT_CC)dnl
-AS_IF([test "$GCC" = "yes"], [
-    AS_CASE(["$target_os"],[aix*],[mjit_std_cflag="-std=gnu99"])
-])
+AS_CASE(["$GCC:$target_os"],
+    [yes:aix*], [mjit_std_cflag="-std=gnu99"],
+    [mjit_std_cflag=])
 AC_SUBST(MJIT_CFLAGS, [${MJIT_CFLAGS-"-w ${mjit_std_cflag} ${orig_cflags}"}])dnl
 AC_SUBST(MJIT_OPTFLAGS, [${MJIT_OPTFLAGS-'$(optflags)'}])dnl
 AC_SUBST(MJIT_DEBUGFLAGS, [${MJIT_DEBUGFLAGS-'$(debugflags)'}])dnl