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from os import getenv, path
from subprocess import Popen, PIPE
from re import sub
import shlex
import shutil
cc = getenv("CC")
assert cc, "Environment variable CC not set"
# Check if CC has options, as is the case in yocto, where it uses CC="cc --sysroot..."
cc_tokens = cc.split()
if len(cc_tokens) > 1:
cc = cc_tokens[0]
cc_options = " ".join([str(e) for e in cc_tokens[1:]]) + " "
else:
cc_options = ""
# ignore optional stderr could be None as it is set to PIPE to avoid that.
# mypy: disable-error-code="union-attr"
cc_is_clang = b"clang version" in Popen([cc, "-v"], stderr=PIPE).stderr.readline()
srctree = getenv('srctree')
assert srctree, "Environment variable srctree, for the Linux sources, not set"
src_feature_tests = f'{srctree}/tools/build/feature'
def clang_has_option(option):
error_substrings = (
b"unknown argument",
b"is not supported",
b"unknown warning option"
)
cmd = shlex.split(f"{cc} {cc_options} {option}") + [
"-o", "/dev/null",
path.join(src_feature_tests, "test-hello.c")
]
cc_output = Popen(cmd, stderr=PIPE).stderr.readlines()
return not any(any(error in line for error in error_substrings) for line in cc_output)
if cc_is_clang:
from sysconfig import get_config_vars
vars = get_config_vars()
for var in ('CFLAGS', 'OPT'):
vars[var] = sub("-specs=[^ ]+", "", vars[var])
if not clang_has_option("-mcet"):
vars[var] = sub("-mcet", "", vars[var])
if not clang_has_option("-fcf-protection"):
vars[var] = sub("-fcf-protection", "", vars[var])
if not clang_has_option("-fstack-clash-protection"):
vars[var] = sub("-fstack-clash-protection", "", vars[var])
if not clang_has_option("-fstack-protector-strong"):
vars[var] = sub("-fstack-protector-strong", "", vars[var])
if not clang_has_option("-fno-semantic-interposition"):
vars[var] = sub("-fno-semantic-interposition", "", vars[var])
if not clang_has_option("-ffat-lto-objects"):
vars[var] = sub("-ffat-lto-objects", "", vars[var])
if not clang_has_option("-ftree-loop-distribute-patterns"):
vars[var] = sub("-ftree-loop-distribute-patterns", "", vars[var])
if not clang_has_option("-gno-variable-location-views"):
vars[var] = sub("-gno-variable-location-views", "", vars[var])
from setuptools import setup, Extension
from setuptools.command.build_ext import build_ext as _build_ext
from setuptools.command.install_lib import install_lib as _install_lib
class build_ext(_build_ext):
def finalize_options(self):
_build_ext.finalize_options(self)
self.build_lib = build_lib
self.build_temp = build_tmp
class install_lib(_install_lib):
def finalize_options(self):
_install_lib.finalize_options(self)
self.build_dir = build_lib
def run(self):
_install_lib.run(self)
shutil.copy2(f'{src_perf}/python/perf.pyi', self.install_dir)
# switch off several checks (need to be at the end of cflags list)
extra_cflags = ['-fno-strict-aliasing', '-Wno-write-strings', '-Wno-unused-parameter', '-Wno-redundant-decls' ]
if cc_is_clang:
extra_cflags += ["-Wno-unused-command-line-argument" ]
if clang_has_option("-Wno-cast-function-type-mismatch"):
extra_cflags += ["-Wno-cast-function-type-mismatch" ]
else:
extra_cflags += ['-Wno-cast-function-type' ]
# The python headers have mixed code with declarations (decls after asserts, for instance)
extra_cflags += [ "-Wno-declaration-after-statement" ]
src_perf = f'{srctree}/tools/perf'
build_lib = getenv('PYTHON_EXTBUILD_LIB')
build_tmp = getenv('PYTHON_EXTBUILD_TMP')
perf = Extension('perf',
sources = [ src_perf + '/util/python.c' ],
include_dirs = ['util/include'],
extra_compile_args = extra_cflags,
)
setup(name='perf',
version='0.1',
description='Interface with the Linux profiling infrastructure',
author='Arnaldo Carvalho de Melo',
author_email='acme@redhat.com',
license='GPLv2',
url='http://perf.wiki.kernel.org',
ext_modules=[perf],
cmdclass={'build_ext': build_ext, 'install_lib': install_lib})
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