diff -r 517623c39dac -r 27fc63b27dad Makefile
--- a/Makefile	Sun Aug 07 23:32:59 2011 +0300
+++ b/Makefile	Sun Aug 07 23:39:01 2011 +0300
@@ -1,6 +1,15 @@
 SHELL = /bin/sh
 export PATH := /bin:/usr/bin:${PATH}
 
+# Disable built in pattern rules.
+MAKEFLAGS += -r
+# Disable built in variables.
+MAKEFLAGS += -R
+# Disable built in suffix rules.
+.SUFFIXES:
+# Default target.
+.DEFAULT_GOAL = all
+
 .PHONY: all
 all: