From f16b6aeabb12b3fbea51bd9a474b1aec84fee7c5 Mon Sep 17 00:00:00 2001
From: Tiago Cunha <tcunha@gmx.com>
Date: Sat, 9 Jul 2011 15:57:56 +0000
Subject: [PATCH] Use an empty CFLAGS by default to prevent autoconf from
 setting it when debugging isn't enabled.

---
 configure.ac | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/configure.ac b/configure.ac
index 305bc391..9137d51d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -8,6 +8,10 @@ AM_INIT_AUTOMAKE([foreign])
 
 AC_CANONICAL_HOST
 
+# When CFLAGS isn't set at this stage and gcc is detected by the macro below,
+# autoconf will automatically use CFLAGS="-O2 -g". Prevent that by using an
+# empty default.
+: ${CFLAGS=""}
 # Set up the compiler in two different ways and say yes we may want to install.
 AC_PROG_CC
 AM_PROG_CC_C_O