diff options
Diffstat (limited to '.venv/lib/python3.12/site-packages/numpy/f2py/_backends/_meson.py')
| -rw-r--r-- | .venv/lib/python3.12/site-packages/numpy/f2py/_backends/_meson.py | 231 |
1 files changed, 231 insertions, 0 deletions
diff --git a/.venv/lib/python3.12/site-packages/numpy/f2py/_backends/_meson.py b/.venv/lib/python3.12/site-packages/numpy/f2py/_backends/_meson.py new file mode 100644 index 0000000..cbd9b0e --- /dev/null +++ b/.venv/lib/python3.12/site-packages/numpy/f2py/_backends/_meson.py @@ -0,0 +1,231 @@ +import errno +import os +import re +import shutil +import subprocess +import sys +from itertools import chain +from pathlib import Path +from string import Template + +from ._backend import Backend + + +class MesonTemplate: + """Template meson build file generation class.""" + + def __init__( + self, + modulename: str, + sources: list[Path], + deps: list[str], + libraries: list[str], + library_dirs: list[Path], + include_dirs: list[Path], + object_files: list[Path], + linker_args: list[str], + fortran_args: list[str], + build_type: str, + python_exe: str, + ): + self.modulename = modulename + self.build_template_path = ( + Path(__file__).parent.absolute() / "meson.build.template" + ) + self.sources = sources + self.deps = deps + self.libraries = libraries + self.library_dirs = library_dirs + if include_dirs is not None: + self.include_dirs = include_dirs + else: + self.include_dirs = [] + self.substitutions = {} + self.objects = object_files + # Convert args to '' wrapped variant for meson + self.fortran_args = [ + f"'{x}'" if not (x.startswith("'") and x.endswith("'")) else x + for x in fortran_args + ] + self.pipeline = [ + self.initialize_template, + self.sources_substitution, + self.deps_substitution, + self.include_substitution, + self.libraries_substitution, + self.fortran_args_substitution, + ] + self.build_type = build_type + self.python_exe = python_exe + self.indent = " " * 21 + + def meson_build_template(self) -> str: + if not self.build_template_path.is_file(): + raise FileNotFoundError( + errno.ENOENT, + "Meson build template" + f" {self.build_template_path.absolute()}" + " does not exist.", + ) + return self.build_template_path.read_text() + + def initialize_template(self) -> None: + self.substitutions["modulename"] = self.modulename + self.substitutions["buildtype"] = self.build_type + self.substitutions["python"] = self.python_exe + + def sources_substitution(self) -> None: + self.substitutions["source_list"] = ",\n".join( + [f"{self.indent}'''{source}'''," for source in self.sources] + ) + + def deps_substitution(self) -> None: + self.substitutions["dep_list"] = f",\n{self.indent}".join( + [f"{self.indent}dependency('{dep}')," for dep in self.deps] + ) + + def libraries_substitution(self) -> None: + self.substitutions["lib_dir_declarations"] = "\n".join( + [ + f"lib_dir_{i} = declare_dependency(link_args : ['''-L{lib_dir}'''])" + for i, lib_dir in enumerate(self.library_dirs) + ] + ) + + self.substitutions["lib_declarations"] = "\n".join( + [ + f"{lib.replace('.', '_')} = declare_dependency(link_args : ['-l{lib}'])" + for lib in self.libraries + ] + ) + + self.substitutions["lib_list"] = f"\n{self.indent}".join( + [f"{self.indent}{lib.replace('.', '_')}," for lib in self.libraries] + ) + self.substitutions["lib_dir_list"] = f"\n{self.indent}".join( + [f"{self.indent}lib_dir_{i}," for i in range(len(self.library_dirs))] + ) + + def include_substitution(self) -> None: + self.substitutions["inc_list"] = f",\n{self.indent}".join( + [f"{self.indent}'''{inc}'''," for inc in self.include_dirs] + ) + + def fortran_args_substitution(self) -> None: + if self.fortran_args: + self.substitutions["fortran_args"] = ( + f"{self.indent}fortran_args: [{', '.join(list(self.fortran_args))}]," + ) + else: + self.substitutions["fortran_args"] = "" + + def generate_meson_build(self): + for node in self.pipeline: + node() + template = Template(self.meson_build_template()) + meson_build = template.substitute(self.substitutions) + meson_build = meson_build.replace(",,", ",") + return meson_build + + +class MesonBackend(Backend): + def __init__(self, *args, **kwargs): + super().__init__(*args, **kwargs) + self.dependencies = self.extra_dat.get("dependencies", []) + self.meson_build_dir = "bbdir" + self.build_type = ( + "debug" if any("debug" in flag for flag in self.fc_flags) else "release" + ) + self.fc_flags = _get_flags(self.fc_flags) + + def _move_exec_to_root(self, build_dir: Path): + walk_dir = Path(build_dir) / self.meson_build_dir + path_objects = chain( + walk_dir.glob(f"{self.modulename}*.so"), + walk_dir.glob(f"{self.modulename}*.pyd"), + walk_dir.glob(f"{self.modulename}*.dll"), + ) + # Same behavior as distutils + # https://github.com/numpy/numpy/issues/24874#issuecomment-1835632293 + for path_object in path_objects: + dest_path = Path.cwd() / path_object.name + if dest_path.exists(): + dest_path.unlink() + shutil.copy2(path_object, dest_path) + os.remove(path_object) + + def write_meson_build(self, build_dir: Path) -> None: + """Writes the meson build file at specified location""" + meson_template = MesonTemplate( + self.modulename, + self.sources, + self.dependencies, + self.libraries, + self.library_dirs, + self.include_dirs, + self.extra_objects, + self.flib_flags, + self.fc_flags, + self.build_type, + sys.executable, + ) + src = meson_template.generate_meson_build() + Path(build_dir).mkdir(parents=True, exist_ok=True) + meson_build_file = Path(build_dir) / "meson.build" + meson_build_file.write_text(src) + return meson_build_file + + def _run_subprocess_command(self, command, cwd): + subprocess.run(command, cwd=cwd, check=True) + + def run_meson(self, build_dir: Path): + setup_command = ["meson", "setup", self.meson_build_dir] + self._run_subprocess_command(setup_command, build_dir) + compile_command = ["meson", "compile", "-C", self.meson_build_dir] + self._run_subprocess_command(compile_command, build_dir) + + def compile(self) -> None: + self.sources = _prepare_sources(self.modulename, self.sources, self.build_dir) + self.write_meson_build(self.build_dir) + self.run_meson(self.build_dir) + self._move_exec_to_root(self.build_dir) + + +def _prepare_sources(mname, sources, bdir): + extended_sources = sources.copy() + Path(bdir).mkdir(parents=True, exist_ok=True) + # Copy sources + for source in sources: + if Path(source).exists() and Path(source).is_file(): + shutil.copy(source, bdir) + generated_sources = [ + Path(f"{mname}module.c"), + Path(f"{mname}-f2pywrappers2.f90"), + Path(f"{mname}-f2pywrappers.f"), + ] + bdir = Path(bdir) + for generated_source in generated_sources: + if generated_source.exists(): + shutil.copy(generated_source, bdir / generated_source.name) + extended_sources.append(generated_source.name) + generated_source.unlink() + extended_sources = [ + Path(source).name + for source in extended_sources + if not Path(source).suffix == ".pyf" + ] + return extended_sources + + +def _get_flags(fc_flags): + flag_values = [] + flag_pattern = re.compile(r"--f(77|90)flags=(.*)") + for flag in fc_flags: + match_result = flag_pattern.match(flag) + if match_result: + values = match_result.group(2).strip().split() + values = [val.strip("'\"") for val in values] + flag_values.extend(values) + # Hacky way to preserve order of flags + unique_flags = list(dict.fromkeys(flag_values)) + return unique_flags |