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//
// 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"
    {
        INPUT = [INPUT].unique().matches("*.o");
        execute("${CXX} -o ${OUTPUT} ${INPUT} ${LDFLAGS}");
    }
}

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

rule "lib"
{
    input "*.o";
    profile "build"
    {
        INPUT = [INPUT].unique().matches("*.o");
        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}");
    }
}