# SConscript
# vim: set ft=python:
# Eryn Wells <eryn@erynwells.me>

files = [
    'boot.s',
    'crti.s',
    'crtn.s',
    'main.cc',
]

Replace(AS='i686-elf-as',
        CC='clang',
        CXX='clang++',
        LINK='i686-elf-ld')
Append(CFLAGS='-std=gnu99',
       CCFLAGS='-target i686-pc-elf -ffreestanding',
       CXXFLAGS='-std=gnu++11 -fno-exceptions -fno-rtti',
       LINKFLAGS='-nostdlib')

linker_script = File('linker.ld')

kernel = Program('polka.bin', files, LINKFLAGS='-T {}'.format(linker_script.path))
Depends(kernel, linker_script)
Alias('kernel', kernel)

img_dir = Dir('img')
grub_cfg = File('grub.cfg')
image_dir = Command(img_dir, kernel, [
    Mkdir(img_dir.Dir('boot/grub')),
    Copy(img_dir.File('boot/${SOURCE.file}'), '$SOURCE'),
    Copy(img_dir.Dir('boot/grub'), grub_cfg)
])
Clean(image_dir, img_dir)
image = Command('polka.img', image_dir, [
    'grub-mkrescue -o $TARGET $SOURCE',
])
Alias('image', image)