diff options
Diffstat (limited to 'mesonbuild/cmake/toolchain.py')
| -rw-r--r-- | mesonbuild/cmake/toolchain.py | 163 |
1 files changed, 97 insertions, 66 deletions
diff --git a/mesonbuild/cmake/toolchain.py b/mesonbuild/cmake/toolchain.py index c9f821a..f3e487d 100644 --- a/mesonbuild/cmake/toolchain.py +++ b/mesonbuild/cmake/toolchain.py @@ -13,9 +13,10 @@ # limitations under the License. from pathlib import Path +from .traceparser import CMakeTraceParser from ..envconfig import CMakeSkipCompilerTest from ..mesonlib import MachineChoice -from .common import language_map +from .common import language_map, cmake_get_generator_args from .. import mlog import shutil @@ -24,53 +25,49 @@ from enum import Enum from textwrap import dedent if T.TYPE_CHECKING: + from .executor import CMakeExecutor from ..envconfig import MachineInfo, Properties, CMakeVariables from ..environment import Environment - from ..compilers import Compiler - - -_MESON_TO_CMAKE_MAPPING = { - 'arm': 'ARMCC', - 'armclang': 'ARMClang', - 'clang': 'Clang', - 'clang-cl': 'MSVC', - 'flang': 'Flang', - 'g95': 'G95', - 'gcc': 'GNU', - 'intel': 'Intel', - 'intel-cl': 'MSVC', - 'msvc': 'MSVC', - 'pathscale': 'PathScale', - 'pgi': 'PGI', - 'sun': 'SunPro', -} class CMakeExecScope(Enum): SUBPROJECT = 'subproject' DEPENDENCY = 'dependency' class CMakeToolchain: - def __init__(self, env: 'Environment', for_machine: MachineChoice, exec_scope: CMakeExecScope, out_dir: Path, preload_file: T.Optional[Path] = None) -> None: + def __init__(self, cmakebin: 'CMakeExecutor', env: 'Environment', for_machine: MachineChoice, exec_scope: CMakeExecScope, build_dir: Path, preload_file: T.Optional[Path] = None) -> None: self.env = env + self.cmakebin = cmakebin self.for_machine = for_machine self.exec_scope = exec_scope self.preload_file = preload_file - self.toolchain_file = out_dir / 'CMakeMesonToolchainFile.cmake' - self.toolchain_file = self.toolchain_file.resolve() + self.build_dir = build_dir + self.build_dir = self.build_dir.resolve() + self.toolchain_file = build_dir / 'CMakeMesonToolchainFile.cmake' + self.cmcache_file = build_dir / 'CMakeCache.txt' self.minfo = self.env.machines[self.for_machine] self.properties = self.env.properties[self.for_machine] self.compilers = self.env.coredata.compilers[self.for_machine] self.cmakevars = self.env.cmakevars[self.for_machine] + self.cmakestate = self.env.coredata.cmake_cache[self.for_machine] self.variables = self.get_defaults() self.variables.update(self.cmakevars.get_variables()) + # Determine whether CMake the compiler test should be skipped + skip_status = self.properties.get_cmake_skip_compiler_test() + self.skip_check = skip_status == CMakeSkipCompilerTest.ALWAYS + if skip_status == CMakeSkipCompilerTest.DEP_ONLY and self.exec_scope == CMakeExecScope.DEPENDENCY: + self.skip_check = True + if not self.properties.get_cmake_defaults(): + self.skip_check = False + assert self.toolchain_file.is_absolute() def write(self) -> Path: if not self.toolchain_file.parent.exists(): self.toolchain_file.parent.mkdir(parents=True) self.toolchain_file.write_text(self.generate()) + self.cmcache_file.write_text(self.generate_cache()) mlog.cmd_ci_include(self.toolchain_file.as_posix()) return self.toolchain_file @@ -80,6 +77,16 @@ class CMakeToolchain: args += ['-DMESON_PRELOAD_FILE=' + self.preload_file.as_posix()] return args + @staticmethod + def _print_vars(vars: T.Dict[str, T.List[str]]) -> str: + res = '' + for key, value in vars.items(): + res += 'set(' + key + for i in value: + res += f' "{i}"' + res += ')\n' + return res + def generate(self) -> str: res = dedent('''\ ###################################### @@ -100,14 +107,19 @@ class CMakeToolchain: for key, value in self.variables.items(): self.variables[key] = [x.replace('\\', '/') for x in value] + # Set compiler + if self.skip_check: + self.update_cmake_compiler_state() + res += '# CMake compiler state variables\n' + for lang, vars in self.cmakestate: + res += f'# -- Variables for language {lang}\n' + res += self._print_vars(vars) + res += '\n' + res += '\n' + # Set variables from the current machine config res += '# Variables from meson\n' - for key, value in self.variables.items(): - res += 'set(' + key - for i in value: - res += f' "{i}"' - - res += ')\n' + res += self._print_vars(self.variables) res += '\n' # Add the user provided toolchain file @@ -121,6 +133,15 @@ class CMakeToolchain: return res + def generate_cache(self) -> str: + if not self.skip_check: + return '' + + res = '' + for name, v in self.cmakestate.cmake_cache.items(): + res += f'{name}:{v.type}={";".join(v.value)}\n' + return res + def get_defaults(self) -> T.Dict[str, T.List[str]]: defaults = {} # type: T.Dict[str, T.List[str]] @@ -151,11 +172,6 @@ class CMakeToolchain: if sys_root: defaults['CMAKE_SYSROOT'] = [sys_root] - # Determine whether CMake the compiler test should be skipped - skip_check = self.properties.get_cmake_skip_compiler_test() == CMakeSkipCompilerTest.ALWAYS - if self.properties.get_cmake_skip_compiler_test() == CMakeSkipCompilerTest.DEP_ONLY and self.exec_scope == CMakeExecScope.DEPENDENCY: - skip_check = True - def make_abs(exe: str) -> str: if Path(exe).is_absolute(): return exe @@ -168,9 +184,6 @@ class CMakeToolchain: # Set the compiler variables for lang, comp_obj in self.compilers.items(): exe_list = [make_abs(x) for x in comp_obj.get_exelist()] - comp_id = CMakeToolchain.meson_compiler_to_cmake_id(comp_obj) - comp_version = comp_obj.version.upper() - prefix = 'CMAKE_{}_'.format(language_map.get(lang, lang.upper())) if not exe_list: @@ -183,35 +196,53 @@ class CMakeToolchain: if comp_obj.get_id() == 'clang-cl': defaults['CMAKE_LINKER'] = comp_obj.get_linker_exelist() - # Setting the variables after this check cause CMake to skip - # validating the compiler - if not skip_check: - continue - - defaults[prefix + 'COMPILER_ID'] = [comp_id] - defaults[prefix + 'COMPILER_VERSION'] = [comp_version] - #defaults[prefix + 'COMPILER_LOADED'] = ['1'] - defaults[prefix + 'COMPILER_FORCED'] = ['1'] - defaults[prefix + 'COMPILER_WORKS'] = ['TRUE'] - #defaults[prefix + 'ABI_COMPILED'] = ['TRUE'] - return defaults - @staticmethod - def meson_compiler_to_cmake_id(cobj: 'Compiler') -> str: - """Translate meson compiler's into CMAKE compiler ID's. - - Most of these can be handled by a simple table lookup, with a few - exceptions. - - Clang and Apple's Clang are both identified as "clang" by meson. To make - things more complicated gcc and vanilla clang both use Apple's ld64 on - macOS. The only way to know for sure is to do an isinstance() check. - """ - from ..compilers import (AppleClangCCompiler, AppleClangCPPCompiler, - AppleClangObjCCompiler, AppleClangObjCPPCompiler) - if isinstance(cobj, (AppleClangCCompiler, AppleClangCPPCompiler, - AppleClangObjCCompiler, AppleClangObjCPPCompiler)): - return 'AppleClang' - # If no mapping, try GNU and hope that the build files don't care - return _MESON_TO_CMAKE_MAPPING.get(cobj.get_id(), 'GNU') + def update_cmake_compiler_state(self) -> None: + # Check if all variables are already cached + if self.cmakestate.languages.issuperset(self.compilers.keys()): + return + + # Generate the CMakeLists.txt + mlog.debug('CMake Toolchain: Calling CMake once to generate the compiler state') + languages = list(self.compilers.keys()) + lang_ids = [language_map.get(x, x.upper()) for x in languages] + cmake_content = dedent(f''' + cmake_minimum_required(VERSION 3.7) + project(CompInfo {' '.join(lang_ids)}) + ''') + + build_dir = Path(self.env.scratch_dir) / '__CMake_compiler_info__' + build_dir.mkdir(parents=True, exist_ok=True) + cmake_file = build_dir / 'CMakeLists.txt' + cmake_file.write_text(cmake_content) + + # Generate the temporary toolchain file + temp_toolchain_file = build_dir / 'CMakeMesonTempToolchainFile.cmake' + temp_toolchain_file.write_text(CMakeToolchain._print_vars(self.variables)) + + # Configure + trace = CMakeTraceParser(self.cmakebin.version(), build_dir) + self.cmakebin.set_exec_mode(print_cmout=False, always_capture_stderr=trace.requires_stderr()) + cmake_args = [] + cmake_args += trace.trace_args() + cmake_args += cmake_get_generator_args(self.env) + cmake_args += [f'-DCMAKE_TOOLCHAIN_FILE={temp_toolchain_file.as_posix()}', '.'] + rc, _, raw_trace = self.cmakebin.call(cmake_args, build_dir=build_dir, disable_cache=True) + + if rc != 0: + mlog.warning('CMake Toolchain: Failed to determine CMake compilers state') + return + + # Parse output + trace.parse(raw_trace) + self.cmakestate.cmake_cache = {**trace.cache} + + vars_by_file = {k.name: v for (k, v) in trace.vars_by_file.items()} + + for lang in languages: + lang_cmake = language_map.get(lang, lang.upper()) + file_name = f'CMake{lang_cmake}Compiler.cmake' + vars = vars_by_file.setdefault(file_name, {}) + vars[f'CMAKE_{lang_cmake}_COMPILER_FORCED'] = ['1'] + self.cmakestate.update(lang, vars) |