--- a/Makefile	2011-01-13 23:10:08.911556954 +0300
+++ b/Makefile	2011-01-13 23:12:43.329510332 +0300
@@ -36,6 +36,7 @@
 include Makerules
 include Makethird
 
+CFLAGS ?=
 CFLAGS += $(THIRD_INCS) $(SYS_FREETYPE_INC)
 
 #

--- a/Makerules	2010-08-25 18:12:08.000000000 +0400
+++ b/Makerules	2011-01-13 23:31:10.535045464 +0300
@@ -4,7 +4,8 @@
 OS := $(OS:MINGW%=MINGW)
 
 CC ?= cc
-CFLAGS := -Ifitz -Imupdf -Wall
+CFLAGS ?=
+CFLAGS += -Ifitz -Imupdf -Wall
 LDFLAGS :=
 
 ifeq "$(build)" "debug"