#! /usr/bin/env python3
# Copyright 2020 The Chromium Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
# Integration tests for remote_link.
#
# Usage:
#
# Ensure that rewrapper, llvm-objdump, and llvm-dwarfdump are in your
# PATH.
# Then run:
#
# tools/clang/scripts/remote_link_integration_tests.py
#
# See also remote_link_unit_tests.py, which contains unit tests and
# instructions for generating coverage information.
import remote_ld
import remote_link
from io import StringIO
import os
import re
import shlex
import subprocess
import unittest
from unittest import mock
from remote_link_test_utils import named_directory, working_directory
# Path constants.
CHROMIUM_DIR = os.path.abspath(
os.path.join(os.path.dirname(__file__), '..', '..', '..'))
LLVM_BIN_DIR = os.path.join(CHROMIUM_DIR, 'third_party', 'llvm-build',
'Release+Asserts', 'bin')
def _create_inputs(path):
"""
Creates input files under path.
"""
with open(os.path.join(path, 'main.cpp'), 'w') as f:
f.write('extern int foo();\n'
'int main(int argc, char *argv[]) {\n return foo();\n}\n')
with open(os.path.join(path, 'foo.cpp'), 'w') as f:
f.write('int foo() {\n return 12;\n}\n')
with open(os.path.join(path, 'bar.cpp'), 'w') as f:
f.write('int bar() {\n return 9;\n}\n')
def _lto_args(generate_bitcode):
"""
Returns list of arguments to clang to generate bitcode or not.
"""
if generate_bitcode:
return ['-flto=thin']
else:
return []
class RemoteLinkUnixAllowMain(remote_ld.RemoteLinkUnix):
"""
Same as remote_ld.RemoteLinkUnix, but has "main" on the allow list.
"""
def __init__(self, *args, **kwargs):
super(RemoteLinkUnixAllowMain, self).__init__(*args, **kwargs)
self.ALLOWLIST = {'main'}
class RemoteLinkWindowsAllowMain(remote_link.RemoteLinkWindows):
"""
Same as remote_ld.RemoteLinkWindows, but has "main" on the allow list.
"""
def __init__(self, *args, **kwargs):
super(RemoteLinkWindowsAllowMain, self).__init__(*args, **kwargs)
self.ALLOWLIST = {'main.exe'}
class RemoteLinkIntegrationTest(unittest.TestCase):
def clangcl(self):
return os.path.join(LLVM_BIN_DIR, 'clang-cl' + remote_link.exe_suffix())
def lld_link(self):
return os.path.join(LLVM_BIN_DIR, 'lld-link' + remote_link.exe_suffix())
def llvmar(self):
return os.path.join(LLVM_BIN_DIR, 'llvm-ar' + remote_link.exe_suffix())
def test_distributed_lto_common_objs(self):
with named_directory() as d, working_directory(d):
_create_inputs(d)
os.makedirs('obj')
subprocess.check_call([
self.clangcl(), '-c', '-Os', '-flto=thin', 'main.cpp',
'-Foobj/main.obj'
])
subprocess.check_call([
self.clangcl(), '-c', '-Os', '-flto=thin', 'foo.cpp', '-Foobj/foo.obj'
])
subprocess.check_call([
self.clangcl(), '-c', '-Os', '-flto=thin', 'bar.cpp', '-Foobj/bar.obj'
])
subprocess.check_call([
self.llvmar(), 'crsT', 'obj/foobar.lib', 'obj/bar.obj', 'obj/foo.obj'
])
with open('main.rsp', 'w') as f:
f.write('obj/main.obj\n' 'obj/foobar.lib\n')
with open('my_reclient.sh', 'w') as f:
f.write('#! /bin/sh\n\nrewrapper "$@"\n')
os.chmod('my_reclient.sh', 0o755)
rc = remote_link.RemoteLinkWindows().main([
'remote_link.py', '--wrapper', './my_reclient.sh', '--ar-path',
self.llvmar(), '--',
self.lld_link(), '-nodefaultlib', '-entry:main', '-out:main.exe',
'@main.rsp'
])
# Should succeed.
self.assertEqual(rc, 0)
# Check codegen parameters.
with open(os.path.join(d, 'lto.main.exe', 'build.ninja')) as f:
buildrules = f.read()
codegen_match = re.search('^rule codegen\\b.*?^[^ ]', buildrules,
re.MULTILINE | re.DOTALL)
self.assertIsNotNone(codegen_match)
codegen_text = codegen_match.group(0)
self.assertIn('my_reclient.sh', codegen_text)
self.assertNotIn('-flto', codegen_text)
self.assertIn('build common_objs/obj/main.obj.stamp : codegen ',
buildrules)
self.assertIn('build common_objs/obj/foo.obj.stamp : codegen ',
buildrules)
self.assertIn(' index = common_objs/empty.thinlto.bc', buildrules)
link_match = re.search('^build main.exe : native-link\\b.*?^[^ ]',
buildrules, re.MULTILINE | re.DOTALL)
self.assertIsNotNone(link_match)
link_text = link_match.group(0)
self.assertNotIn('main.exe.split.obj', link_text)
# Check that main does not call foo.
disasm = subprocess.check_output(['llvm-objdump', '-d', 'main.exe'])
# There are no symbols in the disassembly, but we're expecting two
# functions, one of which calls the other.
self.assertTrue(b'call' in disasm or b'jmp' in disasm)
def test_distributed_lto_allowlist(self):
with named_directory() as d, working_directory(d):
_create_inputs(d)
os.makedirs('obj')
subprocess.check_call([
self.clangcl(), '-c', '-Os', '-flto=thin', '-m32', 'main.cpp',
'-Foobj/main.obj'
])
subprocess.check_call([
self.clangcl(), '-c', '-Os', '-flto=thin', '-m32', 'foo.cpp',
'-Foobj/foo.obj'
])
subprocess.check_call([
self.clangcl(), '-c', '-Os', '-flto=thin', '-m32', 'bar.cpp',
'-Foobj/bar.obj'
])
subprocess.check_call([
self.llvmar(), 'crsT', 'obj/foobar.lib', 'obj/bar.obj', 'obj/foo.obj'
])
with open('main.rsp', 'w') as f:
f.write('obj/main.obj\n' 'obj/foobar.lib\n')
rc = RemoteLinkWindowsAllowMain().main([
'remote_link.py', '--wrapper', 'rewrapper', '--ar-path',
self.llvmar(), '--',
self.lld_link(), '-nodefaultlib', '-entry:main', '-machine:X86',
'-opt:lldlto=2', '-mllvm:-import-instr-limit=10', '-out:main.exe',
'@main.rsp'
])
# Should succeed.
self.assertEqual(rc, 0)
# Check codegen parameters.
with open(os.path.join(d, 'lto.main.exe', 'build.ninja')) as f:
buildrules = f.read()
codegen_match = re.search('^rule codegen\\b.*?^[^ ]', buildrules,
re.MULTILINE | re.DOTALL)
self.assertIsNotNone(codegen_match)
codegen_text = codegen_match.group(0)
self.assertIn('rewrapper', codegen_text)
self.assertIn('-m32', codegen_text)
self.assertIn('-mllvm -import-instr-limit=10', codegen_text)
self.assertNotIn('-flto', codegen_text)
self.assertIn('build lto.main.exe/obj/main.obj.stamp : codegen ',
buildrules)
self.assertIn('build lto.main.exe/obj/foo.obj.stamp : codegen ',
buildrules)
link_match = re.search('^build main.exe : native-link\\b.*?^[^ ]',
buildrules, re.MULTILINE | re.DOTALL)
self.assertIsNotNone(link_match)
link_text = link_match.group(0)
self.assertIn('main.exe.split.obj', link_text)
# Check that main does not call foo.
disasm = subprocess.check_output(['llvm-objdump', '-d', 'main.exe'])
# There are no symbols in the disassembly, but we're expecting a single
# function, with no calls or jmps.
self.assertNotIn(b'jmp', disasm)
self.assertNotIn(b'call', disasm)
def test_override_allowlist(self):
with named_directory() as d, working_directory(d):
_create_inputs(d)
os.makedirs('obj')
subprocess.check_call([
self.clangcl(), '-c', '-O2', '-flto=thin', 'main.cpp',
'-Foobj/main.obj'
])
subprocess.check_call([
self.clangcl(), '-c', '-O2', '-flto=thin', 'foo.cpp', '-Foobj/foo.obj'
])
rc = remote_link.RemoteLinkWindows().main([
'remote_link.py', '--generate', '--allowlist', '--ar-path',
self.llvmar(), '--',
self.lld_link(), '-nodefaultlib', '-entry:main', '-opt:lldlto=2',
'-out:main.exe', 'obj/main.obj', 'obj/foo.obj'
])
# Should succeed.
self.assertEqual(rc, 0)
# Check that we have rules for main and foo, and that they are
# not common objects.
with open(os.path.join(d, 'lto.main.exe', 'build.ninja')) as f:
buildrules = f.read()
codegen_match = re.search(r'^rule codegen\b.*?^[^ ]', buildrules,
re.MULTILINE | re.DOTALL)
self.assertIsNotNone(codegen_match)
codegen_text = codegen_match.group(0)
self.assertNotIn('-flto', codegen_text)
self.assertIn('build lto.main.exe/obj/main.obj.stamp : codegen ',
buildrules)
self.assertIn('build lto.main.exe/obj/foo.obj.stamp : codegen ',
buildrules)
link_match = re.search(r'^build main.exe : native-link\b.*?^[^ ]',
buildrules, re.MULTILINE | re.DOTALL)
self.assertIsNotNone(link_match)
class RemoteLdIntegrationTest(unittest.TestCase):
def clangxx(self):
return os.path.join(LLVM_BIN_DIR, 'clang++' + remote_link.exe_suffix())
def llvmar(self):
return os.path.join(LLVM_BIN_DIR, 'llvm-ar' + remote_link.exe_suffix())
def test_nonlto(self):
with named_directory() as d, working_directory(d):
_create_inputs(d)
subprocess.check_call(
[self.clangxx(), '-c', '-Os', 'main.cpp', '-o', 'main.o'])
subprocess.check_call(
[self.clangxx(), '-c', '-Os', 'foo.cpp', '-o', 'foo.o'])
rc = RemoteLinkUnixAllowMain().main([
'remote_ld.py', '--wrapper', 'rewrapper', '--ar-path',
self.llvmar(), '--',
self.clangxx(), '-fuse-ld=lld', 'main.o', 'foo.o', '-o', 'main'
])
# Should succeed.
self.assertEqual(rc, 0)
# lto.main directory should not be present.
self.assertFalse(os.path.exists(os.path.join(d, 'lto.main')))
# Check that main calls foo.
disasm = subprocess.check_output(['llvm-objdump', '-d', 'main'])
main_idx = disasm.index(b' <main>:\n')
after_main_idx = disasm.index(b'\n\n', main_idx)
main_disasm = disasm[main_idx:after_main_idx]
self.assertIn(b'foo', main_disasm)
def test_fallback_lto(self):
with named_directory() as d, working_directory(d):
_create_inputs(d)
subprocess.check_call([
self.clangxx(), '-c', '-Os', '-flto=thin', 'main.cpp', '-o', 'main.o'
])
subprocess.check_call(
[self.clangxx(), '-c', '-Os', '-flto=thin', 'foo.cpp', '-o', 'foo.o'])
rc = remote_ld.RemoteLinkUnix().main([
'remote_ld.py', '--wrapper', 'rewrapper', '--ar-path',
self.llvmar(), '--',
self.clangxx(), '-fuse-ld=lld', '-flto=thin', 'main.o', 'foo.o', '-o',
'main'
])
# Should succeed.
self.assertEqual(rc, 0)
# lto.main directory should not be present.
self.assertFalse(os.path.exists(os.path.join(d, 'lto.main')))
# Check that main does not call foo.
disasm = subprocess.check_output(['llvm-objdump', '-d', 'main'])
main_idx = disasm.index(b' <main>:\n')
after_main_idx = disasm.index(b'\n\n', main_idx)
main_disasm = disasm[main_idx:after_main_idx]
self.assertNotIn(b'foo', main_disasm)
def test_distributed_lto(self):
with named_directory() as d, working_directory(d):
_create_inputs(d)
subprocess.check_call([
self.clangxx(), '-c', '-Os', '-flto=thin', 'main.cpp', '-o', 'main.o'
])
subprocess.check_call(
[self.clangxx(), '-c', '-Os', '-flto=thin', 'foo.cpp', '-o', 'foo.o'])
rc = RemoteLinkUnixAllowMain().main([
'remote_ld.py', '-j', '16', '--ar-path',
self.llvmar(), '--',
self.clangxx(), '-fuse-ld=lld', '-flto=thin', 'main.o', 'foo.o', '-o',
'main'
])
# Should succeed.
self.assertEqual(rc, 0)
# build.ninja file should have rewrapper invocations in it.
with open(os.path.join(d, 'lto.main', 'build.ninja')) as f:
buildrules = f.read()
self.assertIn('rewrapper ', buildrules)
self.assertIn('build lto.main/main.o.stamp : codegen ', buildrules)
self.assertIn('build lto.main/foo.o.stamp : codegen ', buildrules)
# Check that main does not call foo.
disasm = subprocess.check_output(['llvm-objdump', '-d', 'main'])
main_idx = disasm.index(b' <main>:\n')
after_main_idx = disasm.index(b'\n\n', main_idx)
main_disasm = disasm[main_idx:after_main_idx]
self.assertNotIn(b'foo', main_disasm)
def test_distributed_lto_thin_archive_same_dir(self):
with named_directory() as d, working_directory(d):
_create_inputs(d)
subprocess.check_call([
self.clangxx(), '-c', '-Os', '-flto=thin', 'main.cpp', '-o', 'main.o'
])
subprocess.check_call(
[self.clangxx(), '-c', '-Os', '-flto=thin', 'foo.cpp', '-o', 'foo.o'])
subprocess.check_call(
[self.clangxx(), '-c', '-Os', '-flto=thin', 'bar.cpp', '-o', 'bar.o'])
subprocess.check_call(
[self.llvmar(), 'crsT', 'libfoobar.a', 'bar.o', 'foo.o'])
rc = RemoteLinkUnixAllowMain().main([
'remote_ld.py', '--ar-path',
self.llvmar(), '--',
self.clangxx(), '-fuse-ld=lld', '-flto=thin', 'main.o', 'libfoobar.a',
'-o', 'main'
])
# Should succeed.
self.assertEqual(rc, 0)
# build.ninja file should have rewrapper invocations in it.
with open(os.path.join(d, 'lto.main', 'build.ninja')) as f:
buildrules = f.read()
self.assertIn('rewrapper ', buildrules)
self.assertIn('build lto.main/main.o.stamp : codegen ', buildrules)
self.assertIn('build lto.main/foo.o.stamp : codegen ', buildrules)
# Check that main does not call foo.
disasm = subprocess.check_output(['llvm-objdump', '-d', 'main'])
main_idx = disasm.index(b' <main>:\n')
after_main_idx = disasm.index(b'\n\n', main_idx)
main_disasm = disasm[main_idx:after_main_idx]
self.assertNotIn(b'foo', main_disasm)
def test_distributed_lto_thin_archive_subdir(self):
self.run_archive_test(bitcode_archive=True,
bitcode_main=True,
thin_archive=True)
def test_distributed_machine_code_thin_archive_bitcode_main_subdir(self):
self.run_archive_test(bitcode_archive=False,
bitcode_main=True,
thin_archive=True)
def test_distributed_machine_code_thin_archive_subdir(self):
self.run_archive_test(bitcode_archive=False,
bitcode_main=False,
thin_archive=True)
def test_distributed_bitcode_thick_archive_subdir(self):
self.run_archive_test(bitcode_archive=True,
bitcode_main=True,
thin_archive=False)
def test_distributed_machine_code_thick_archive_subdir(self):
self.run_archive_test(bitcode_archive=False,
bitcode_main=False,
thin_archive=False)
def test_distributed_machine_code_thick_archive_bitcode_main_subdir(self):
self.run_archive_test(bitcode_archive=False,
bitcode_main=True,
thin_archive=False)
def run_archive_test(self, bitcode_archive, bitcode_main, thin_archive):
"""
Runs a test to ensure correct remote linking handling of
an archive.
Arguments:
bitcode_archive: whether the archive should contain bitcode (true)
or machine code (false)
bitcode_main: whether the main object, outside the archive, should
contain bitcode (true) or machine code (false)
thin_archive: whether to create a thin archive instead of a regular archive.
"""
with named_directory() as d, working_directory(d):
_create_inputs(d)
os.makedirs('obj')
subprocess.check_call(
[self.clangxx(), '-c', '-Os', 'main.cpp', '-o', 'obj/main.o'] +
_lto_args(bitcode_main))
subprocess.check_call(
[self.clangxx(), '-c', '-Os', 'foo.cpp', '-o', 'obj/foo.o'] +
_lto_args(bitcode_archive))
subprocess.check_call(
[self.clangxx(), '-c', '-Os', 'bar.cpp', '-o', 'obj/bar.o'] +
_lto_args(bitcode_archive))
archive_creation_arg = 'crs'
if thin_archive:
archive_creation_arg = 'crsT'
subprocess.check_call([
self.llvmar(), archive_creation_arg, 'obj/libfoobar.a', 'obj/bar.o',
'obj/foo.o'
])
rc = RemoteLinkUnixAllowMain().main([
'remote_ld.py', '--ar-path',
self.llvmar(), '--',
self.clangxx(), '-fuse-ld=lld', '-flto=thin', 'obj/main.o',
'obj/libfoobar.a', '-o', 'main'
])
# Should succeed.
self.assertEqual(rc, 0)
if bitcode_main or bitcode_archive:
# build.ninja file should have rewrapper invocations in it.
with open(os.path.join(d, 'lto.main', 'build.ninja')) as f:
buildrules = f.read()
self.assertIn('rewrapper ', buildrules)
if bitcode_main:
self.assertIn('build lto.main/obj/main.o.stamp : codegen ',
buildrules)
if bitcode_archive:
if thin_archive:
self.assertIn('build lto.main/obj/foo.o.stamp : codegen ',
buildrules)
else:
self.assertIn(
'build lto.main/expanded_archives/obj/libfoobar.a/' +
'foo.o.stamp : codegen ', buildrules)
# Check that main does not call foo.
if bitcode_archive:
disasm = subprocess.check_output(['llvm-objdump', '-d', 'main'])
main_idx = disasm.index(b' <main>:\n')
after_main_idx = disasm.index(b'\n\n', main_idx)
main_disasm = disasm[main_idx:after_main_idx]
self.assertNotIn(b'foo', main_disasm)
def test_debug_params(self):
with named_directory() as d, working_directory(d):
_create_inputs(d)
os.makedirs('obj')
subprocess.check_call([
self.clangxx(), '-c', '-g', '-gsplit-dwarf', '-flto=thin', 'main.cpp',
'-o', 'obj/main.o'
])
subprocess.check_call([
self.clangxx(), '-c', '-g', '-gsplit-dwarf', '-flto=thin', 'foo.cpp',
'-o', 'obj/foo.o'
])
with open('main.rsp', 'w') as f:
f.write('obj/main.o\n' 'obj/foo.o\n')
rc = RemoteLinkUnixAllowMain().main([
'remote_ld.py', '--ar-path',
self.llvmar(), '--',
self.clangxx(), '-fuse-ld=lld', '-flto=thin', '-g', '-gsplit-dwarf',
'-Wl,--lto-O2', '-o', 'main', '@main.rsp'
])
# Should succeed.
self.assertEqual(rc, 0)
# Check debug info present, refers to .dwo file, and does not
# contain full debug info for foo.cpp.
dbginfo = subprocess.check_output(
['llvm-dwarfdump', '-debug-info',
'main']).decode('utf-8', 'backslashreplace')
self.assertRegexpMatches(dbginfo, '\\bDW_AT_GNU_dwo_name\\b.*\\.dwo"')
self.assertNotRegexpMatches(dbginfo, '\\bDW_AT_name\\b.*foo\\.cpp"')
def test_distributed_lto_params(self):
with named_directory() as d, working_directory(d):
_create_inputs(d)
os.makedirs('obj')
subprocess.check_call([
self.clangxx(), '-c', '-Os', '-flto=thin', '-m32', '-fsplit-lto-unit',
'-fwhole-program-vtables', 'main.cpp', '-o', 'obj/main.o'
])
subprocess.check_call([
self.clangxx(), '-c', '-Os', '-flto=thin', '-m32', '-fsplit-lto-unit',
'-fwhole-program-vtables', 'foo.cpp', '-o', 'obj/foo.o'
])
subprocess.check_call([
self.clangxx(), '-c', '-Os', '-flto=thin', '-m32', '-fsplit-lto-unit',
'-fwhole-program-vtables', 'bar.cpp', '-o', 'obj/bar.o'
])
subprocess.check_call(
[self.llvmar(), 'crsT', 'obj/libfoobar.a', 'obj/bar.o', 'obj/foo.o'])
with open('main.rsp', 'w') as f:
f.write('-fsplit-lto-unit\n'
'-fwhole-program-vtables\n'
'obj/main.o\n'
'obj/libfoobar.a\n')
rc = RemoteLinkUnixAllowMain().main([
'remote_ld.py', '--ar-path',
self.llvmar(), '--',
self.clangxx(), '-fuse-ld=lld', '-flto=thin', '-m32', '-Wl,-mllvm',
'-Wl,-generate-type-units', '-Wl,--lto-O2', '-o', 'main',
'-Wl,--start-group', '@main.rsp', '-Wl,--end-group'
])
# Should succeed.
self.assertEqual(rc, 0)
# Check codegen parameters.
with open(os.path.join(d, 'lto.main', 'build.ninja')) as f:
buildrules = f.read()
codegen_match = re.search('^rule codegen\\b.*?^[^ ]', buildrules,
re.MULTILINE | re.DOTALL)
self.assertIsNotNone(codegen_match)
codegen_text = codegen_match.group(0)
self.assertIn('rewrapper', codegen_text)
self.assertIn('-m32', codegen_text)
self.assertIn('-mllvm -generate-type-units', codegen_text)
self.assertNotIn('-flto', codegen_text)
self.assertIn('build lto.main/obj/main.o.stamp : codegen ', buildrules)
self.assertIn('build lto.main/obj/foo.o.stamp : codegen ', buildrules)
link_match = re.search('^build main : native-link\\b.*?^[^ ]',
buildrules, re.MULTILINE | re.DOTALL)
self.assertIsNotNone(link_match)
link_text = link_match.group(0)
self.assertIn('main.split.o', link_text)
# Check that main does not call foo.
disasm = subprocess.check_output(['llvm-objdump', '-d', 'main'])
main_idx = disasm.index(b' <main>:\n')
after_main_idx = disasm.index(b'\n\n', main_idx)
main_disasm = disasm[main_idx:after_main_idx]
self.assertNotIn(b'foo', main_disasm)
def test_no_rewrapper(self):
with named_directory() as d, working_directory(d):
_create_inputs(d)
subprocess.check_call([
self.clangxx(), '-c', '-Os', '-flto=thin', 'main.cpp', '-o', 'main.o'
])
subprocess.check_call(
[self.clangxx(), '-c', '-Os', '-flto=thin', 'foo.cpp', '-o', 'foo.o'])
rc = RemoteLinkUnixAllowMain().main([
'remote_ld.py', '--ar-path',
self.llvmar(), '--no-wrapper', '-j', '16', '--',
self.clangxx(), '-fuse-ld=lld', '-flto=thin', 'main.o', 'foo.o', '-o',
'main'
])
# Should succeed.
self.assertEqual(rc, 0)
# build.ninja file should not have rewrapper invocations in it.
with open(os.path.join(d, 'lto.main', 'build.ninja')) as f:
buildrules = f.read()
self.assertNotIn('rewrapper ', buildrules)
self.assertIn('build lto.main/main.o.stamp : codegen ', buildrules)
self.assertIn('build lto.main/foo.o.stamp : codegen ', buildrules)
# Check that main does not call foo.
disasm = subprocess.check_output(['llvm-objdump', '-d', 'main'])
main_idx = disasm.index(b' <main>:\n')
after_main_idx = disasm.index(b'\n\n', main_idx)
main_disasm = disasm[main_idx:after_main_idx]
self.assertNotIn(b'foo', main_disasm)
def test_generate_no_codegen(self):
with named_directory() as d, working_directory(d):
with open('main.o', 'wb') as f:
f.write(b'\7fELF')
with mock.patch('sys.stderr', new_callable=StringIO) as stderr:
rc = RemoteLinkUnixAllowMain().main([
'remote_ld.py', '--ar-path',
self.llvmar(), '--generate', '--',
self.clangxx(), 'main.o', '-o', 'main'
])
self.assertEqual(rc, 5)
self.assertIn('no ninja file generated.\n', stderr.getvalue())
def test_generate(self):
with named_directory() as d, working_directory(d):
with open('main.o', 'wb') as f:
f.write(b'BC\xc0\xde')
with mock.patch('sys.stderr', new_callable=StringIO) as stderr:
rc = RemoteLinkUnixAllowMain().main([
'remote_ld.py', '--ar-path',
self.llvmar(), '--generate', '--',
self.clangxx(), 'main.o', '-o', 'main'
])
self.assertEqual(rc, 0)
m = re.search('ninja file (.*)', stderr.getvalue())
self.assertIsNotNone(m)
path = shlex.split(m.group(1))[0]
self.assertTrue(os.path.exists(path))
content = open(path).read()
self.assertRegex(
content,
re.compile('^build [^:]+/main\\.o\\.stamp : codegen ',
re.MULTILINE))
def test_override_allowlist(self):
with named_directory() as d, working_directory(d):
_create_inputs(d)
subprocess.check_call([
self.clangxx(), '-c', '-Os', '-flto=thin', 'main.cpp', '-o', 'main.o'
])
subprocess.check_call(
[self.clangxx(), '-c', '-Os', '-flto=thin', 'foo.cpp', '-o', 'foo.o'])
rc = remote_ld.RemoteLinkUnix().main([
'remote_ld.py', '--ar-path',
self.llvmar(), '--generate', '--allowlist', '--',
self.clangxx(), '-fuse-ld=lld', '-flto=thin', 'main.o', 'foo.o', '-o',
'main'
])
# Should succeed.
self.assertEqual(rc, 0)
# build.ninja file should have rules for main and foo.
ninjafile = os.path.join(d, 'lto.main', 'build.ninja')
self.assertTrue(os.path.exists(ninjafile))
with open(ninjafile) as f:
buildrules = f.read()
self.assertIn('build lto.main/main.o.stamp : codegen ', buildrules)
self.assertIn('build lto.main/foo.o.stamp : codegen ', buildrules)
if __name__ == '__main__':
unittest.main()
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