--- a/Makefile	Mon Aug 08 09:15:53 2011 +0300
+++ b/Makefile	Wed Aug 10 00:35:17 2011 +0300
@@ -1,4 +1,14 @@
 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: