Import('env')

env['AS'] = 'i686-elf-as'
env['CC'] = 'i686-elf-gcc'
env['CXX'] = 'i686-elf-g++'
env['LD'] = 'i686-elf-g++'

def get_crt_object(name: str) -> str:
    import subprocess

    cmd = [env['CXX']]
    cmd.extend(env['CXXFLAGS'])
    cmd.append(f'-print-file-name={name}')
    result = subprocess.run(cmd, stdout=subprocess.PIPE)
    return result.stdout.decode('utf-8').strip()
crtbegin_o = get_crt_object('crtbegin.o')
crtend_o = get_crt_object('crtend.o')
crti_o = env.Object('src/crt/crti.s')
crtn_o = env.Object('src/crt/crtn.s')

i686_sources = Split('''
    src/kernel/boot.s
    src/kernel/startup.cpp
''')

env['LINKCOM'] = env['LINKCOM'].replace('$_LIBFLAGS', f'{crti_o[0].abspath} {crtbegin_o} $_LIBFLAGS {crtend_o} {crtn_o[0].abspath}')

env.Append(KERNEL_SOURCES = [env.File(f) for f in i686_sources])
env.Append(KERNEL_DEPENDENCIES = [crti_o, crtn_o])

Return('env')