Starter makefile for cross-platform projects

platforms.makefile

# This script assumes you're using a GNU-compliant Make implementation.
# It is required that the following in your path:
# - bash
# Otherwise, this script attempts to use native commands.

# Help from [here](http://stackoverflow.com/questions/4555120/obtaining-directory-makefile-resides-in)
THIS_MAKEFILE_PATH:=$(word $(words $(MAKEFILE_LIST)),$(MAKEFILE_LIST))
POSIX_DIR="$(shell cd $(dir $(THIS_MAKEFILE_PATH));pwd)"
UNAME=$(shell uname -o)
ifeq ($(OS),Windows_NT)
	ifeq ($(UNAME),Cygwin)
		THIS_DIR:="$(shell cygpath -w $(POSIX_DIR))"
	else
		THIS_DIR:="$(shell cd $(dir $(THIS_MAKEFILE_PATH)) & echo %cd%)"
		MKDIR_CMD:=mkdir # XXX: Untested
		RMDIR_CMD:=rmdir /Q /S
	endif
endif 

# Defaults
THIS_DIR?=$(POSIX_DIR)
MKDIR_CMD?=mkdir -p
RMDIR_CMD?=rm -rf