From: Michael R. Crusoe <michael.crusoe@gmail.com>
Subject: Don't discard the provided CFLAGS
Forwarded: https://github.com/TimoLassmann/kalign/pull/19
--- kalign.orig/m4/ax_set_compile_flags.m4
+++ kalign/m4/ax_set_compile_flags.m4
@@ -19,11 +19,11 @@
 AC_DEFINE(DEBUG,1,[Defines debugging .])
 
 ADD_DEBUG_COMPILE_WARNINGS
-CFLAGS="-ggdb -std=gnu11"
+CFLAGS="-ggdb -std=gnu11 ${CFLAGS}"
 CFLAGS="${CFLAGS} ${TLDEVEL_CFLAGS}"
 else
 ADD_PRODUCTION_COMPILE_WARNINGS
-CFLAGS="-O3 -std=gnu11"
+CFLAGS="-O3 -std=gnu11 ${CFLAGS}"
 CFLAGS="${CFLAGS} ${TLDEVEL_CFLAGS}"
 DEBUG=0
 fi
