gistfile1.sh

#!/bin/bash
#
# Copyright (c) 2011-2012, Mihail Szabolcs
#
# Released into the public domain. For more information see http://unlicense.org/ .
#
# Bootstraps an environment that makes it possible to cross-compile libraries like SDL, 
# or pretty much anything else in an easy and unobstrusive manner.
#
# Requirements:
#	* MingW Cross Compiler
#	* Wine (for testing only)
#	* Linux
#
# Example:
#	create file: main.c
#
#	#include <windows.h>
#	
#	int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
#	{
#		MessageBox(NULL, "Hello World!", "Hello :)", MB_OK | MB_ICONINFORMATION);
#		return 0;
#	}
#
#	boot into a shell: ./mingw bash
#	compile the file: $CC main.c -o hello.exe
#	test the resulting executable: wine hello.exe
#
#	One can also run ./mingw ./configure directly without booting into a shell
#	in order to configure third party libraries like SDL in an easy fashion.
#

if [ -z "$1" ]; then
	echo "usage: mingw command [arguments]"
	exit
fi

MINGW_GCC_VARIANTS=(i586-mingw32msvc-gcc i386-mingw32msvc-gcc i686-pc-mingw32-gcc)

for gcc in ${MINGW_GCC_VARIANTS[@]}; do
	MINGW_GCC=$(which $gcc 2>/dev/null)
	if [ -n "$MINGW_GCC" ]; then
		echo -e "\e[92mFound: $MINGW_GCC\e[00m"
		break
	fi
done

if [ -z "$MINGW_GCC" ]; then
	echo -e "\e[91mCannot find mingw32-gcc or any of it's variants, aborting ...\e[00m"
	exit
fi

export MINGW_PREFIX_PATH=${MINGW_GCC/-gcc/}
export MINGW_PREFIX=$(basename $MINGW_PREFIX_PATH)

export CC="$MINGW_PREFIX_PATH-gcc"
export CXX="$MINGW_PREFIX_PATH-g++"
export LD="$MINGW_PREFIX_PATH-ld"
export AR="$MINGW_PREFIX_PATH-ar"
export AS="$MINGW_PREFIX_PATH-as"
export NM="$MINGW_PREFIX_PATH-nm"
export STRIP="$MINGW_PREFIX_PATH-strip"
export RANLIB="$MINGW_PREFIX_PATH-ranlib"
export DLLTOOL="$MINGW_PREFIX_PATH-dlltool"
export OBJDUMP="$MINGW_PREFIX_PATH-objdump"
export RESCOMP="$MINGW_PREFIX_PATH-windres"
export WINDRES="$MINGW_PREFIX_PATH-windres"

if [ "$1" == "bash" -a -f .localrc ]; then
	$@ --rcfile .localrc
elif [ "$1" == "./configure" ]; then
	$@ --host=$MINGW_PREFIX
else
	$@
fi