53 lines
1.5 KiB
Python
53 lines
1.5 KiB
Python
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import subprocess
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env = Environment(tools = ['default', 'compilation_db'])
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env['AS'] = 'i686-elf-as'
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env['CC'] = 'i686-elf-gcc'
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env['CXX'] = 'i686-elf-g++'
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env['LD'] = 'i686-elf-g++'
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env.Append(CXXFLAGS = ['-ffreestanding', '-fno-exceptions', '-fno-rtti', '-std=c++20'])
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env.Append(LINKFLAGS = ['-T', 'linker.ld', '-ffreestanding', '-nostdlib'])
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env.Append(CPPPATH = ['#include', '#stdlib/include'])
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env.Append(CCFLAGS = ['-g', '-O0'])
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def get_crt_object(name: str) -> str:
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cmd = [env['CXX']]
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cmd.extend(env['CXXFLAGS'])
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cmd.append(f'-print-file-name={name}')
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result = subprocess.run(cmd, stdout=subprocess.PIPE)
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return result.stdout.decode('utf-8').strip()
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crtbegin_o = get_crt_object('crtbegin.o')
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crtend_o = get_crt_object('crtend.o')
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crti_o = env.Object('src/crt/crti.s')
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crtn_o = env.Object('src/crt/crtn.s')
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os_sources = Split('''
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src/app/main.cpp
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src/kernel/boot.s
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src/kernel/startup.cpp
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src/os/panic.cpp
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src/os/tty.cpp
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src/cstdlib/assert.cpp
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src/cstdlib/stdio.cpp
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src/cstdlib/stdlib.cpp
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src/cstdlib/string.cpp
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stdlib/src/exception.cpp
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stdlib/src/new.cpp
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''')
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env['LINKCOM'] = env['LINKCOM'].replace('$_LIBFLAGS', f'{crti_o[0]} {crtbegin_o} $_LIBFLAGS {crtend_o} {crtn_o[0]}')
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prog_os = env.Program(
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target = 'os.bin',
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source = os_sources,
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LIBS = ['gcc']
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)
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env.Depends(prog_os, [crti_o, crtn_o])
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env.Default(prog_os)
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comp_db = env.CompilationDatabase(target = '#compile_commands.json')
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env.Default(comp_db)
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