my first Rakefile practice.

hello.c

#include <stdio.h>
#include "message.h"
int main(void){
    printf("hello, ");
    message();
    return 0;
}

message.c

#include <stdio.h>

int message(void){
    printf("fuckin world!");
    return 0;
}

message.h

int message();

Rakefile

#参考 http://www2s.biglobe.ne.jp/~idesaku/sss/tech/rake/

require 'rake/clean'

# なぜか消えない
CLEAN.include('*.o')
CLOBBER.include('*.o')
CLEAN << "*.o"
CLOBBER << "*.o"

CC = "gcc"
BIN_OUT = "./out"

# なぜか作成されない
directory BIN_OUT

task :default => "hello"

file "hello" => ["hello.o", "message.o"] do |t|  
    sh "#{CC} -o #{t.name} #{t.prerequisites.join(' ')}"
end

rule '.o' => '.c' do |t|
    sh "#{CC} -c #{t.source}"
end