From 4ec9c411c5d80ed5a18988f5ec6dd814c22ad206 Mon Sep 17 00:00:00 2001
From: brarcher <brarcher@64e312b2-a51f-0410-8e61-82d0ca0eb02a>
Date: Thu, 31 Jan 2013 23:40:47 +0000
Subject: [PATCH] Only add -lm if the floor function is in the math lib.

git-svn-id: svn+ssh://svn.code.sf.net/p/check/code/trunk@689 64e312b2-a51f-0410-8e61-82d0ca0eb02a
---
 configure.ac | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/configure.ac b/configure.ac
index d22cc56..d1dbb29 100644
--- a/configure.ac
+++ b/configure.ac
@@ -125,9 +125,8 @@ if test "$TEX" = "false"; then
     AC_MSG_WARN(tex not installed: cannot rebuild HTML documentation.)
 fi
 
-# Add math library
-LIBS=-lm
-AC_SUBST(LIBS)
+# Check if floor is in the math library, and if so add -lm to LIBS
+AC_CHECK_LIB([m], [floor])
 
 # Check if clock_gettime, timer_create, timer_settime, and timer_delete are available in lib rt, and if so,
 # add -lrt to LIBS
-- 
2.40.0