- allow for passing custom compiler FLAGS
	- use host CC and CFLAGS for tools/configurator build
--- stats-82bd4977b607b8714f361467e37a9d801ff911b6.orig/Makefile	2015-02-23 22:34:48.000000000 +0100
+++ stats-82bd4977b607b8714f361467e37a9d801ff911b6/Makefile	2015-02-23 22:38:45.478017862 +0100
@@ -5,10 +5,10 @@ PREFIX = /usr/local
 OPTFLAGS=-O3 -flto
 #OPTFLAGS=-g
 WARNFLAGS=-Wall -Wstrict-prototypes -Wundef
-CPPFLAGS=-I.
-CFLAGS=$(OPTFLAGS) $(WARNFLAGS)
-LDFLAGS=$(OPTFLAGS)
-LDLIBS=-lm
+CPPFLAGS+=-I.
+CFLAGS+=$(OPTFLAGS) $(WARNFLAGS)
+LDFLAGS+=$(OPTFLAGS)
+LDLIBS+=-lm
 
 # Comment this out (or use "VALGRIND=" on cmdline) if you don't have valgrind.
 VALGRIND=valgrind --quiet --leak-check=full --error-exitcode=5
@@ -41,6 +41,8 @@ $(OFILES): config.h
 config.h: tools/configurator
 	if $< > $@.tmp; then mv $@.tmp $@; else rm -f $@.tmp; fi
 
+tools/configurator: CC=${CC_FOR_BUILD}
+tools/configurator: CFLAGS=${OPTFLAGS} ${WARNFLAGS}
 stats: $(OFILES)
 
 distclean: clean