From: Michael Niedermayer <michaelni@gmx.at>
Date: Tue, 13 Sep 2011 15:29:49 +0000 (+0200)
Subject: configure: slightly more robust looking check for math functions.
X-Git-Tag: android-x86-4.4-r1~16246
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=9331a2ee41d13d04e2eed077f1f934a62288ab01;p=android-x86%2Fexternal-ffmpeg.git

configure: slightly more robust looking check for math functions.
I dont know on which system the prior check failed but an advanced
linker on some platform might have optimized func() out as unreachable.

Patch taken from http://floss.freebox.fr
Author: unknown

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
---

diff --git a/configure b/configure
index 284379463b..300852d83b 100755
--- a/configure
+++ b/configure
@@ -708,7 +708,7 @@ check_mathfunc(){
     check_ld "$@" <<EOF && enable $func
 #include <math.h>
 float foo(float f) { return $func(f); }
-int main(void){ return 0; }
+int main(void){ return (int) foo; }
 EOF
 }