1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
|
from __future__ import annotations
import os
import errno
import shutil
import subprocess
import sys
from pathlib import Path
from ._backend import Backend
from string import Template
from itertools import chain
import warnings
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],
c_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
self.pipeline = [
self.initialize_template,
self.sources_substitution,
self.deps_substitution,
self.include_substitution,
self.libraries_substitution,
]
self.build_type = build_type
self.python_exe = python_exe
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:
indent = " " * 21
self.substitutions["source_list"] = f",\n{indent}".join(
[f"{indent}'{source}'" for source in self.sources]
)
def deps_substitution(self) -> None:
indent = " " * 21
self.substitutions["dep_list"] = f",\n{indent}".join(
[f"{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} = declare_dependency(link_args : ['-l{lib}'])"
for lib in self.libraries
]
)
indent = " " * 21
self.substitutions["lib_list"] = f"\n{indent}".join(
[f"{indent}{lib}," for lib in self.libraries]
)
self.substitutions["lib_dir_list"] = f"\n{indent}".join(
[f"{indent}lib_dir_{i}," for i in range(len(self.library_dirs))]
)
def include_substitution(self) -> None:
indent = " " * 21
self.substitutions["inc_list"] = f",\n{indent}".join(
[f"{indent}'{inc}'" for inc in self.include_dirs]
)
def generate_meson_build(self):
for node in self.pipeline:
node()
template = Template(self.meson_build_template())
return template.substitute(self.substitutions)
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"
)
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"),
)
# 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
|
