$OpenBSD: patch-build_Makefile_in,v 1.4 2017/11/25 21:50:50 afresh1 Exp $
--- build/Makefile.in.orig	Tue Oct 24 15:21:19 2017
+++ build/Makefile.in	Fri Nov 10 09:49:19 2017
@@ -37,7 +37,7 @@ MASTDIR   = @mastdir@
 
 PKGCONFIGDIR = @prefix@/share/pkgconfig
 
-CFLAGS    = @cflags@ @ccdef@MVM_TRACING=$(TRACING) @ccdef@MVM_CGOTO=$(CGOTO) @ccdef@MVM_RDTSCP=$(RDTSCP)
+CFLAGS    += @cflags@ @ccdef@MVM_TRACING=$(TRACING) @ccdef@MVM_CGOTO=$(CGOTO) @ccdef@MVM_RDTSCP=$(RDTSCP)
 CINCLUDES = @cincludes@ \
             @ccinc@@shaincludedir@ \
             @ccinc@3rdparty/tinymt \
