diff -Naur a/Makefile b/Makefile
--- a/Makefile	2013-03-12 01:33:16.000000000 +0000
+++ b/Makefile	2013-04-16 22:31:22.279650191 +0100
@@ -8,8 +8,8 @@
 INSTALL_DATA = $(INSTALL) -m 644
 
 # Flags
-CFLAGS = -Wall -fpic
-LDFLAGS = -shared
+CFLAGS ?= -Wall -fpic
+LDFLAGS ?= -shared
 
 # Directories
 LUA_INC_DIR ?= /usr/include/lua5.1
@@ -37,7 +37,7 @@
 dist-zip: distdir
 	git archive --format=zip --prefix=$(VERSION)/ HEAD > $(DIST_DIR)/$(VERSION).zip
 
-install: all
+install:
 	mkdir -p $(DESTDIR)$(INSTALL_DIR_LUA)
 	$(INSTALL_DATA) lua/luaevent.lua $(DESTDIR)$(INSTALL_DIR_LUA)/luaevent.lua
 	mkdir -p $(DESTDIR)$(INSTALL_DIR_BIN)/luaevent/