//
// Really, variables here should default to something that's platform dependant,
// but for now, we use linux, I'll default them to gnu/linux
//


if CXX == null then
{
	CXX = "g++";
}

if AR == null then
{
	AR = "ar";
}

if CC == null then
{
	CC = "cc";
}

if BISON == null then
{
	BISON = "bison";
}

if FLEX == null then
{
	FLEX = "flex";
}

function cppToObj()
{
	if OBJ_DIR == null then
	{
		return INPUT.regex("\\.cpp$", ".o");
	}
	else
	{
		return OBJ_DIR + "/" + INPUT.fileName().regex("\\.cpp$", ".o");
	}

}

function cToObj()
{
	if OBJ_DIR == null then
	{
		return INPUT.regex("\\.c$", ".o");
	}
	else
	{
		return OBJ_DIR + "/" + INPUT.fileName().regex("\\.c$", ".o");
	}

}

rule "exe"
{
	input "*.o";
	profile "build"
	{
		execute("${CXX} -o ${OUTPUT} ${INPUT} ${LDFLAGS}");
	}
}

rule "so"
{
	input "*.o";
	profile "build"
	{
		execute("${CXX} -shared -o ${OUTPUT} ${INPUT} ${LDFLAGS}");
	}
}

rule "lib"
{
	input "*.o";
	profile "build"
	{
		execute("${AR} cr ${OUTPUT} ${INPUT}");
	}
}

rule "cpp"
{
	input "*.cpp";
	output INPUT.cppToObj();
	requires getMakeDeps("${CXX} ${CXXFLAGS} -M -MG ${INPUT}");
	profile "build"
	{
		execute("${CXX} ${CXXFLAGS} -c -o ${OUTPUT} ${INPUT}", "g++");
	}
}

// Heh, we're not going to use this one.
rule "c"
{
	input "*.c";
	output INPUT.cToObj();
	requires getMakeDeps("${CC} ${CFLAGS} -M -MG ${INPUT}");
	profile "build"
	{
		execute("${CC} ${CFLAGS} -c -o ${OUTPUT} ${INPUT}");
	}
}

rule "bison"
{
	input "*.y";
	output [INPUT.regex("\\.y$", ".tab.c"), INPUT.regex("\\.y$", ".tab.h")];
	profile "build"
	{
		BASE = INPUT.regex("\\.y", "");
		execute("${BISON} -b${BASE} ${BISONFLAGS} ${INPUT}");
		// if you add a -v bison will produce a .output file
	}
}

rule "flex"
{
	input "*.l";
	output INPUT.regex("\\.l$", ".yy.c");
	output INPUT.regex("\\.l$", ".yy.h");
	profile "build"
	{
		execute("${FLEX} ${FLEXFLAGS} ${INPUT}");
	}
}

rule "jar"
{
	input "*.class";
	profile "build"
	{
		if exists(OUTPUT) then
		{
			unlink(OUTPUT);
		}
		execute("jar cf ${OUTPUT} ${INPUT}");
	}
}

rule "class"
{
	input "*.java";
	output INPUT.regex("\\.java", ".class");
	profile "build"
	{
		execute("javac -cp . ${INPUT}");
	}
}