From 796882bcc5314c0bb095fcad0a6ffa30a6122bae Mon Sep 17 00:00:00 2001
From: Bent Bisballe Nyeng <deva@aasimon.org>
Date: Sat, 10 Dec 2016 17:09:21 +0100
Subject: Check for -ffloat-store before using it in dgreftest.

---
 configure.ac | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

(limited to 'configure.ac')

diff --git a/configure.ac b/configure.ac
index 7ee1ab5..38e3080 100644
--- a/configure.ac
+++ b/configure.ac
@@ -61,6 +61,25 @@ AC_COMPILE_IFELSE(
 )
 AC_LANG_POP([C++])
 
+dnl ===========================
+dnl Check for -ffloat-store support
+dnl ===========================
+AC_LANG_PUSH([C++])
+TMP_CXXFLAGS="$CXXFLAGS"
+CXXFLAGS="-Wall -Werror -ffloat-store"
+AC_MSG_CHECKING([whether CXX supports -ffloat-store])
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([])],
+	[AC_MSG_RESULT([yes])
+	 FLOAT_STORE="-ffloat-store"
+	],
+	[AC_MSG_RESULT([no])
+	 FLOAT_STORE=""
+	]
+)
+AC_SUBST(FLOAT_STORE)
+CXXFLAGS="$TMP_CXXFLAGS"
+AC_LANG_POP([C++])
+
 dnl ======================
 dnl Init pkg-config
 dnl ======================
-- 
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