From: Michael Niedermayer <michaelni@gmx.at>
Date: Tue, 26 Feb 2008 22:01:11 +0000 (+0000)
Subject: Make gcc ignore the distinction between +0.0 and -0.0, this allows it to
X-Git-Tag: v0.5~5703
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=b2eb2ff098b21a3f50d08688a437e55d8f089390;p=coroid%2Fffmpeg_saccubus.git

Make gcc ignore the distinction between +0.0 and -0.0, this allows it to
change x+0.0 to x. Though it alone does not allow gcc to remove x*0.0,
that would also require -ffinite-math-only.

Originally committed as revision 12252 to svn://svn.ffmpeg.org/ffmpeg/trunk
---

diff --git a/configure b/configure
index c38ab939c..cbd5dac10 100755
--- a/configure
+++ b/configure
@@ -1824,6 +1824,7 @@ elif enabled optimizations; then
     fi
 fi
 check_cflags -fno-math-errno
+check_cflags -fno-signed-zeros
 
 # PIC flags for shared library objects where they are needed
 if enabled shared; then