--- mk/Variables.mk.orig	2016-07-26 15:26:23.000000000 +0200
+++ mk/Variables.mk	2016-07-26 15:26:51.000000000 +0200
@@ -36,18 +36,12 @@
 INSTALL_DIR	:= $(INSTALL) -d
 
 # cflags
-CFLAGS		?= -g -O2
+CFLAGS		?= $(EXTRA_CFLAGS)
 CXXFLAGS	?= $(CFLAGS)
 CFLAGS		+= -Wall -Wmissing-prototypes -Wstrict-prototypes \
 		   -Wpointer-arith -Wunused
 CXXFLAGS	+= -Wall -Wpointer-arith -Wunused
 
-# add /usr/local to the search path if something is in there ...
-ifneq ($(wildcard /usr/local/include/*.h),)
-  CFLAGS  += -I/usr/local/include
-  LDFLAGS += -L/usr/local/$(LIB)
-endif
-
 # fixup include path for $(srcdir) != "."
 ifneq ($(srcdir),.)
   CFLAGS  += -I. -I$(srcdir)