1from os import getenv, path 2from subprocess import Popen, PIPE 3from re import sub 4 5cc = getenv("CC") 6assert cc, "Environment variable CC not set" 7 8# Check if CC has options, as is the case in yocto, where it uses CC="cc --sysroot..." 9cc_tokens = cc.split() 10if len(cc_tokens) > 1: 11 cc = cc_tokens[0] 12 cc_options = " ".join([str(e) for e in cc_tokens[1:]]) + " " 13else: 14 cc_options = "" 15 16# ignore optional stderr could be None as it is set to PIPE to avoid that. 17# mypy: disable-error-code="union-attr" 18cc_is_clang = b"clang version" in Popen([cc, "-v"], stderr=PIPE).stderr.readline() 19 20srctree = getenv('srctree') 21assert srctree, "Environment variable srctree, for the Linux sources, not set" 22src_feature_tests = f'{srctree}/tools/build/feature' 23 24def clang_has_option(option): 25 cc_output = Popen([cc, cc_options + option, path.join(src_feature_tests, "test-hello.c") ], stderr=PIPE).stderr.readlines() 26 return [o for o in cc_output if ((b"unknown argument" in o) or (b"is not supported" in o) or (b"unknown warning option" in o))] == [ ] 27 28if cc_is_clang: 29 from sysconfig import get_config_vars 30 vars = get_config_vars() 31 for var in ('CFLAGS', 'OPT'): 32 vars[var] = sub("-specs=[^ ]+", "", vars[var]) 33 if not clang_has_option("-mcet"): 34 vars[var] = sub("-mcet", "", vars[var]) 35 if not clang_has_option("-fcf-protection"): 36 vars[var] = sub("-fcf-protection", "", vars[var]) 37 if not clang_has_option("-fstack-clash-protection"): 38 vars[var] = sub("-fstack-clash-protection", "", vars[var]) 39 if not clang_has_option("-fstack-protector-strong"): 40 vars[var] = sub("-fstack-protector-strong", "", vars[var]) 41 if not clang_has_option("-fno-semantic-interposition"): 42 vars[var] = sub("-fno-semantic-interposition", "", vars[var]) 43 if not clang_has_option("-ffat-lto-objects"): 44 vars[var] = sub("-ffat-lto-objects", "", vars[var]) 45 if not clang_has_option("-ftree-loop-distribute-patterns"): 46 vars[var] = sub("-ftree-loop-distribute-patterns", "", vars[var]) 47 if not clang_has_option("-gno-variable-location-views"): 48 vars[var] = sub("-gno-variable-location-views", "", vars[var]) 49 50from setuptools import setup, Extension 51 52from setuptools.command.build_ext import build_ext as _build_ext 53from setuptools.command.install_lib import install_lib as _install_lib 54 55class build_ext(_build_ext): 56 def finalize_options(self): 57 _build_ext.finalize_options(self) 58 self.build_lib = build_lib 59 self.build_temp = build_tmp 60 61class install_lib(_install_lib): 62 def finalize_options(self): 63 _install_lib.finalize_options(self) 64 self.build_dir = build_lib 65 66 67cflags = getenv('CFLAGS', '').split() 68# switch off several checks (need to be at the end of cflags list) 69cflags += ['-fno-strict-aliasing', '-Wno-write-strings', '-Wno-unused-parameter', '-Wno-redundant-decls' ] 70if cc_is_clang: 71 cflags += ["-Wno-unused-command-line-argument" ] 72 if clang_has_option("-Wno-cast-function-type-mismatch"): 73 cflags += ["-Wno-cast-function-type-mismatch" ] 74else: 75 cflags += ['-Wno-cast-function-type' ] 76 77# The python headers have mixed code with declarations (decls after asserts, for instance) 78cflags += [ "-Wno-declaration-after-statement" ] 79 80src_perf = f'{srctree}/tools/perf' 81build_lib = getenv('PYTHON_EXTBUILD_LIB') 82build_tmp = getenv('PYTHON_EXTBUILD_TMP') 83 84perf = Extension('perf', 85 sources = [ src_perf + '/util/python.c' ], 86 include_dirs = ['util/include'], 87 extra_compile_args = cflags, 88 ) 89 90setup(name='perf', 91 version='0.1', 92 description='Interface with the Linux profiling infrastructure', 93 author='Arnaldo Carvalho de Melo', 94 author_email='acme@redhat.com', 95 license='GPLv2', 96 url='http://perf.wiki.kernel.org', 97 ext_modules=[perf], 98 cmdclass={'build_ext': build_ext, 'install_lib': install_lib}) 99