--- configure.orig	2013-10-07 13:59:48.000000000 +0200
+++ configure		2013-10-07 16:30:19.000000000 +0200
@@ -105,12 +105,12 @@
 fi
 
 if [ $USE_CLANG -eq 0 ]; then
-  CFLAGS='-g -Wall -O2'
-  LDFLAGS='-g -Wall -O2'
+  CFLAGS='${CFLAGS} -g -Wall -O2'
+  LDFLAGS='${LDFLAGS} -g -Wall -O2'
   COMPILER='gcc'
 else
-  CFLAGS='-g -O2'
-  LDFLAGS='-g -O2'
+  CFLAGS='${CFLAGS} -g -O2'
+  LDFLAGS='${LDFLAGS} -g -O2'
   COMPILER='clang'
 fi
 
@@ -151,7 +151,6 @@
 # use ./configure instead
 
 TARGET := $TARGET
-CC := $COMPILER
 CFLAGS := $CFLAGS
 LDFLAGS := $LDFLAGS
 STRIP := strip