1 from os import getenv, path
2 from subprocess import Popen, PIPE
3 from re import sub
4 
5 cc = getenv("CC")
6 
7 # Check if CC has options, as is the case in yocto, where it uses CC="cc --sysroot..."
8 cc_tokens = cc.split()
9 if len(cc_tokens) > 1:
10     cc = cc_tokens[0]
11     cc_options = " ".join([str(e) for e in cc_tokens[1:]]) + " "
12 else:
13     cc_options = ""
14 
15 cc_is_clang = b"clang version" in Popen([cc, "-v"], stderr=PIPE).stderr.readline()
16 src_feature_tests  = getenv('srctree') + '/tools/build/feature'
17 
18 def clang_has_option(option):
19     cc_output = Popen([cc, cc_options + option, path.join(src_feature_tests, "test-hello.c") ], stderr=PIPE).stderr.readlines()
20     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))] == [ ]
21 
22 if cc_is_clang:
23     from sysconfig import get_config_vars
24     vars = get_config_vars()
25     for var in ('CFLAGS', 'OPT'):
26         vars[var] = sub("-specs=[^ ]+", "", vars[var])
27         if not clang_has_option("-mcet"):
28             vars[var] = sub("-mcet", "", vars[var])
29         if not clang_has_option("-fcf-protection"):
30             vars[var] = sub("-fcf-protection", "", vars[var])
31         if not clang_has_option("-fstack-clash-protection"):
32             vars[var] = sub("-fstack-clash-protection", "", vars[var])
33         if not clang_has_option("-fstack-protector-strong"):
34             vars[var] = sub("-fstack-protector-strong", "", vars[var])
35         if not clang_has_option("-fno-semantic-interposition"):
36             vars[var] = sub("-fno-semantic-interposition", "", vars[var])
37         if not clang_has_option("-ffat-lto-objects"):
38             vars[var] = sub("-ffat-lto-objects", "", vars[var])
39         if not clang_has_option("-ftree-loop-distribute-patterns"):
40             vars[var] = sub("-ftree-loop-distribute-patterns", "", vars[var])
41         if not clang_has_option("-gno-variable-location-views"):
42             vars[var] = sub("-gno-variable-location-views", "", vars[var])
43 
44 from setuptools import setup, Extension
45 
46 from setuptools.command.build_ext   import build_ext   as _build_ext
47 from setuptools.command.install_lib import install_lib as _install_lib
48 
49 class build_ext(_build_ext):
50     def finalize_options(self):
51         _build_ext.finalize_options(self)
52         self.build_lib  = build_lib
53         self.build_temp = build_tmp
54 
55 class install_lib(_install_lib):
56     def finalize_options(self):
57         _install_lib.finalize_options(self)
58         self.build_dir = build_lib
59 
60 
61 cflags = getenv('CFLAGS', '').split()
62 # switch off several checks (need to be at the end of cflags list)
63 cflags += ['-fno-strict-aliasing', '-Wno-write-strings', '-Wno-unused-parameter', '-Wno-redundant-decls' ]
64 if cc_is_clang:
65     cflags += ["-Wno-unused-command-line-argument" ]
66     if clang_has_option("-Wno-cast-function-type-mismatch"):
67         cflags += ["-Wno-cast-function-type-mismatch" ]
68 else:
69     cflags += ['-Wno-cast-function-type' ]
70 
71 # The python headers have mixed code with declarations (decls after asserts, for instance)
72 cflags += [ "-Wno-declaration-after-statement" ]
73 
74 src_perf  = getenv('srctree') + '/tools/perf'
75 build_lib = getenv('PYTHON_EXTBUILD_LIB')
76 build_tmp = getenv('PYTHON_EXTBUILD_TMP')
77 
78 perf = Extension('perf',
79                  sources = [ src_perf + '/util/python.c' ],
80 		         include_dirs = ['util/include'],
81 		         extra_compile_args = cflags,
82                  )
83 
84 setup(name='perf',
85       version='0.1',
86       description='Interface with the Linux profiling infrastructure',
87       author='Arnaldo Carvalho de Melo',
88       author_email='acme@redhat.com',
89       license='GPLv2',
90       url='http://perf.wiki.kernel.org',
91       ext_modules=[perf],
92       cmdclass={'build_ext': build_ext, 'install_lib': install_lib})
93