--- Makefile	Sun May 20 10:40:55 2007
+++ Makefile	Sat May 26 20:43:02 2007
@@ -135,8 +135,8 @@
 
 # CFLAGS and LDFLAGS are for the users to override from the command line.
 
-CFLAGS = -g -O2 -Wall
-LDFLAGS =
+CFLAGS ?= -g -O2 -Wall
+LDFLAGS ?=
 ALL_CFLAGS = $(CFLAGS)
 ALL_LDFLAGS = $(LDFLAGS)
 STRIP ?= strip
@@ -172,13 +172,13 @@
 
 export prefix bindir gitexecdir sharedir template_dir sysconfdir
 
-CC = gcc
-AR = ar
-TAR = tar
-INSTALL = install
-RPMBUILD = rpmbuild
-TCL_PATH = tclsh
-TCLTK_PATH = wish
+CC ?= gcc
+AR ?= ar
+TAR ?= tar
+INSTALL ?= install
+RPMBUILD ?= rpmbuild
+TCL_PATH ?= tclsh
+TCLTK_PATH ?= wish
 
 export TCL_PATH TCLTK_PATH
 
