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# Copyright (c) 2020 Egor Tensin <Egor.Tensin@gmail.com>
# This file is part of the "cmake-common" project.
# For details, see https://github.com/egor-tensin/cmake-common.
# Distributed under the MIT License.
import abc
from contextlib import contextmanager
import os.path
import project.mingw
from project.platform import Platform
from project.os import on_windows
class Toolchain(abc.ABC):
@abc.abstractmethod
def get_cmake_args(self):
pass
@staticmethod
@contextmanager
def detect(platform, build_dir, mingw=False):
if mingw:
with MinGW.setup(platform, build_dir) as toolchain:
yield toolchain
return
if on_windows():
# MSVC is assumed.
if platform is None:
yield Native()
return
yield MSVC(platform)
return
with GCC.setup(platform, build_dir) as toolchain:
yield toolchain
return
class Native(Toolchain):
def get_cmake_args(self):
return []
class MSVC(Toolchain):
def __init__(self, platform):
self.platform = platform
def get_cmake_args(self):
return ['-A', self.platform.get_cmake_arch()]
class File(Toolchain):
def __init__(self, path):
self.path = path
@staticmethod
def _get_path(build_dir):
return os.path.join(build_dir, 'custom_toolchain.cmake')
def get_cmake_args(self):
return ['-D', f'CMAKE_TOOLCHAIN_FILE={self.path}']
class GCC(File):
@staticmethod
def _format(platform):
return f'''
set(CMAKE_C_COMPILER gcc)
set(CMAKE_C_FLAGS -m{platform.get_address_model()})
set(CMAKE_CXX_COMIPLER g++)
set(CMAKE_CXX_FLAGS -m{platform.get_address_model()})
'''
@staticmethod
@contextmanager
def setup(platform, build_dir):
if platform is None:
yield Native()
return
path = File._get_path(build_dir)
with open(path, mode='w') as file:
file.write(GCC._format(platform))
yield GCC(path)
class MinGW(File):
@staticmethod
def _format(platform):
return f'''
set(CMAKE_C_COMPILER {project.mingw.get_gcc(platform)})
set(CMAKE_CXX_COMPILER {project.mingw.get_gxx(platform)})
set(CMAKE_RC_COMILER {project.mingw.get_windres(platform)})
set(CMAKE_SYSTEM_NAME Windows)
'''
@staticmethod
@contextmanager
def setup(platform, build_dir):
platform = platform or Platform.native()
path = File._get_path(build_dir)
with open(path, mode='w') as file:
file.write(MinGW._format(platform))
yield MinGW(path)
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