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#!/usr/bin/env python3
# Copyright 2023 Huawei Cloud Computing Technology Co., Ltd.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import os
import subprocess
import sys
from pathlib import Path
def run_pkgconfig(args: list[str], env: dict[str, str]) -> str:
result = subprocess.run(["pkg-config"] + args, env=env, capture_output=True)
if result.returncode != 0:
print(result.stderr.decode("utf-8"), file=sys.stderr)
exit(1)
return result.stdout.decode("utf-8").strip()
def read_ldflags(pkg: str, env: dict[str, str]) -> str:
def libname(filename: str) -> str:
return filename.split(".")[0]
local_libs = {
libname(f)
for it in os.walk(".") for f in it[2] if f.startswith("lib")
}
link_flags = run_pkgconfig(["--libs-only-l", pkg], env).split(" ")
# deduplicate, keep right-most
seen: set[str] = set()
link_flags = [
f for f in link_flags[::-1] if f not in seen and not seen.add(f)
][::-1]
def is_local(flag: str) -> bool:
if not flag.startswith("-l"):
return False
lib = libname(flag[3:]) if flag.startswith("-l:") else f"lib{flag[2:]}"
return lib in local_libs
return " ".join([f for f in link_flags if not is_local(f)])
def read_pkgconfig():
if len(sys.argv) < 3:
print(f"usage: read_pkgconfig OUT_NAME PC_FILE")
exit(1)
name = sys.argv[1]
pkg = Path(sys.argv[2]).stem
env = dict(os.environ, PKG_CONFIG_PATH="./lib/pkgconfig")
if name.endswith(".cflags"):
data = run_pkgconfig(["--cflags-only-other", pkg], env)
else:
data = read_ldflags(pkg, env)
with open(f"{name}", 'w') as f:
f.write(data)
if __name__ == "__main__":
read_pkgconfig()
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