From cd23b010a2531c86ee7ec70c80ca6afb01f85ab8 Mon Sep 17 00:00:00 2001
From: Stephan Bergmann <sbergman@redhat.com>
Date: Thu, 23 Feb 2017 12:50:19 +0100
Subject: [PATCH] Don't check HAVE_GCC_ATTRIBUTE_WARN_UNUSED on MSVC

...where -Werror -Wunknown-pragmas command line arguments will trivially make
the test always fail, anyway

Change-Id: Iae5534054331d41508f39d5cf141803ab5bc8ba7
---
 configure.ac | 24 ++++++++++++------------
 1 file changed, 12 insertions(+), 12 deletions(-)

diff --git a/configure.ac b/configure.ac
index d7532cbb9e3d..7f2bfb7efa6e 100644
--- a/configure.ac
+++ b/configure.ac
@@ -6041,20 +6041,20 @@ if test "$GCC" = "yes" -o "$COM_IS_CLANG" = TRUE; then
             AC_MSG_RESULT([yes])])
     CXXFLAGS=$save_CXXFLAGS
     AC_LANG_POP([C++])
-fi
 
-AC_MSG_CHECKING([whether $CXX supports __attribute__((warn_unused))])
-AC_LANG_PUSH([C++])
-save_CXXFLAGS=$CXXFLAGS
-CXXFLAGS="$CXXFLAGS -Werror -Wunknown-pragmas"
-AC_COMPILE_IFELSE([AC_LANG_SOURCE([
-        struct __attribute__((warn_unused)) dummy {};
-    ])], [
-        AC_DEFINE([HAVE_GCC_ATTRIBUTE_WARN_UNUSED],[1])
-        AC_MSG_RESULT([yes])
-    ], [AC_MSG_RESULT([no])])
-CXXFLAGS=$save_CXXFLAGS
+    AC_MSG_CHECKING([whether $CXX supports __attribute__((warn_unused))])
+    AC_LANG_PUSH([C++])
+    save_CXXFLAGS=$CXXFLAGS
+    CXXFLAGS="$CXXFLAGS -Werror -Wunknown-pragmas"
+    AC_COMPILE_IFELSE([AC_LANG_SOURCE([
+            struct __attribute__((warn_unused)) dummy {};
+        ])], [
+            AC_DEFINE([HAVE_GCC_ATTRIBUTE_WARN_UNUSED],[1])
+            AC_MSG_RESULT([yes])
+        ], [AC_MSG_RESULT([no])])
+    CXXFLAGS=$save_CXXFLAGS
 AC_LANG_POP([C++])
+fi
 
 AC_SUBST(HAVE_GCC_AVX)
 AC_SUBST(HAVE_GCC_STACK_PROTECTOR_STRONG)