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#!/usr/bin/env python3
#
# Copyright (C) 2023 The Android Open Source Project
#
# 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.
#
"""
This script is used as a replacement for the Rust linker. It converts a linker
command line into a rspfile that can be used during the link phase.
"""
import os
import shutil
import subprocess
import sys
def create_archive(out, objects, archives):
mricmd = f'create {out}\n'
for o in objects:
mricmd += f'addmod {o}\n'
for a in archives:
mricmd += f'addlib {a}\n'
mricmd += 'save\nend\n'
subprocess.run([os.getenv('AR'), '-M'], encoding='utf-8', input=mricmd, check=True)
objects = []
archives = []
linkdirs = []
libs = []
temp_archives = []
version_script = None
for i, arg in enumerate(sys.argv):
if arg == '-o':
out = sys.argv[i+1]
if arg == '-L':
linkdirs.append(sys.argv[i+1])
if arg.startswith('-l') or arg == '-shared':
libs.append(arg)
if os.getenv('ANDROID_RUST_DARWIN') and (arg == '-dylib' or arg == '-dynamiclib'):
libs.append(arg)
if arg.startswith('-Wl,--version-script='):
version_script = arg[21:]
if arg[0] == '-':
continue
if arg.endswith('.o') or arg.endswith('.rmeta'):
objects.append(arg)
if arg.endswith('.rlib'):
if arg.startswith(os.getenv('TMPDIR')):
temp_archives.append(arg)
else:
archives.append(arg)
create_archive(f'{out}.whole.a', objects, [])
create_archive(f'{out}.a', [], temp_archives)
with open(out, 'w') as f:
if os.getenv("ANDROID_RUST_DARWIN"):
print(f'-force_load', file=f)
print(f'{out}.whole.a', file=f)
else:
print(f'-Wl,--whole-archive', file=f)
print(f'{out}.whole.a', file=f)
print(f'-Wl,--no-whole-archive', file=f)
print(f'{out}.a', file=f)
for a in archives:
print(a, file=f)
for linkdir in linkdirs:
print(f'-L{linkdir}', file=f)
for l in libs:
print(l, file=f)
if version_script:
shutil.copyfile(version_script, f'{out}.version_script')
print(f'-Wl,--version-script={out}.version_script', file=f)
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