python/build/cmake.py: use CMAKE_TOOLCHAIN_FILE
Let cmake know that we're cross-crompiling.
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@ -1,35 +1,62 @@
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import os
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import subprocess
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from build.project import Project
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def __cmake_compiler_args(language, compiler):
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def __write_cmake_compiler(f, language, compiler):
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s = compiler.split(' ', 1)
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result = []
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if len(s) == 2:
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result.append(f'-DCMAKE_{language}_COMPILER_LAUNCHER={s[0]}')
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print(f'set(CMAKE_{language}_COMPILER_LAUNCHER {s[0]})', file=f)
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compiler = s[1]
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result.append(f'-DCMAKE_{language}_COMPILER={compiler}')
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return result
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print(f'set(CMAKE_{language}_COMPILER {compiler})', file=f)
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def __write_cmake_toolchain_file(f, toolchain):
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if '-darwin' in toolchain.actual_arch:
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cmake_system_name = 'Darwin'
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elif toolchain.is_windows:
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cmake_system_name = 'Windows'
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else:
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cmake_system_name = 'Linux'
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f.write(f"""
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set(CMAKE_SYSTEM_NAME {cmake_system_name})
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set(CMAKE_SYSTEM_PROCESSOR {toolchain.actual_arch.split('-', 1)[0]})
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set(CMAKE_C_COMPILER_TARGET {toolchain.actual_arch})
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set(CMAKE_CXX_COMPILER_TARGET {toolchain.actual_arch})
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set(CMAKE_C_FLAGS "{toolchain.cflags} {toolchain.cppflags}")
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set(CMAKE_CXX_FLAGS "{toolchain.cxxflags} {toolchain.cppflags}")
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""")
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__write_cmake_compiler(f, 'C', toolchain.cc)
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__write_cmake_compiler(f, 'CXX', toolchain.cxx)
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def configure(toolchain, src, build, args=()):
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cross_args = []
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if toolchain.is_windows:
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cross_args.append('-DCMAKE_SYSTEM_NAME=Windows')
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cross_args.append('-DCMAKE_RC_COMPILER=' + toolchain.windres)
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# Several targets need a sysroot to prevent pkg-config from
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# looking for libraries on the build host (TODO: fix this
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# properly); but we must not do that on Android because the NDK
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# has a sysroot already
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if '-android' not in toolchain.actual_arch and '-darwin' not in toolchain.actual_arch:
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cross_args.append('-DCMAKE_SYSROOT=' + toolchain.install_prefix)
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os.makedirs(build, exist_ok=True)
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cmake_toolchain_file = os.path.join(build, 'cmake_toolchain_file')
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with open(cmake_toolchain_file, 'w') as f:
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__write_cmake_toolchain_file(f, toolchain)
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configure = [
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'cmake',
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src,
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'-DCMAKE_TOOLCHAIN_FILE=' + cmake_toolchain_file,
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'-DCMAKE_INSTALL_PREFIX=' + toolchain.install_prefix,
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'-DCMAKE_BUILD_TYPE=release',
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] + \
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__cmake_compiler_args('C', toolchain.cc) + \
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__cmake_compiler_args('CXX', toolchain.cxx) + \
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[
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'-DCMAKE_C_FLAGS=' + toolchain.cflags + ' ' + toolchain.cppflags,
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'-DCMAKE_CXX_FLAGS=' + toolchain.cxxflags + ' ' + toolchain.cppflags,
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'-GNinja',
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] + cross_args + args
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