- allow for passing custom compiler FLAGS
	- use host CC and CFLAGS for tools/configurator build
--- stats-82bd4977b607b8714f361467e37a9d801ff911b6.orig/Makefile	2015-02-27 18:30:06.000000000 +0100
+++ stats-82bd4977b607b8714f361467e37a9d801ff911b6/Makefile	2015-02-27 18:37:14.000000000 +0100
@@ -1,14 +1,15 @@
 # Destination directory for installation (intended for packagers)
 DESTDIR = 
-PREFIX = /usr/local
+PREFIX = /usr
 
+CC ?=
 OPTFLAGS=-O3 -flto
 #OPTFLAGS=-g
 WARNFLAGS=-Wall -Wstrict-prototypes -Wundef
-CPPFLAGS=-I.
-CFLAGS=$(OPTFLAGS) $(WARNFLAGS)
-LDFLAGS=$(OPTFLAGS)
-LDLIBS=-lm
+CPPFLAGS+=-I.
+CFLAGS+=$(WARNFLAGS)
+LDFLAGS+=
+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 +42,9 @@ $(OFILES): config.h
 config.h: tools/configurator
 	if $< > $@.tmp; then mv $@.tmp $@; else rm -f $@.tmp; fi
 
+tools/configurator: CC=${CC_FOR_BUILD}
+tools/configurator: CFLAGS=${CFLAGS_FOR_BUILD}
+tools/configurator: LDFLAGS=${LDFLAGS_FOR_BUILD}
 stats: $(OFILES)
 
 distclean: clean