Commit 4be92cf0 authored Feb 15, 2017 by Arnaldo Carvalho de Melo

perf python: Filter out -specs=/a/b/c from the python binding cc options

The -spec=/path/to/file can be used to change what gcc puts in the cc,
ld, etc command lines, but this is not present in clang, filter it out
at the setup.py file by changing python2's internal variable where it
keeps its initial CFLAGS value.

With this all of perf can be built in at least Fedora 25, fixing this
problem:

    GEN      /tmp/build/perf/python/perf.so
    CC       /tmp/build/perf/builtin-buildid-list.o
  clang-4.0: error: argument unused during compilation: '-specs=/usr/lib/rpm/redhat/redhat-hardened-cc1' [-Werror,-Wunused-command-line-argument]
  clang-4.0: error: argument unused during compilation: '-specs=/usr/lib/rpm/redhat/redhat-hardened-cc1' [-Werror,-Wunused-command-line-argument]
  error: command 'clang' failed with exit status 1

Now I need to change all the containers where I have clang to build
perf with it, so that we can check that in other distros (opensuse, debian,
ubuntu, etc) this also works.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-g9lhgr162ao8ao29vvf0hgm1@git.kernel.org


Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

parent 8bd8c653

tools/perf/util/setup.py

+8 −1

Original line number	Diff line number	Diff line
		#!/usr/bin/python2

		from distutils.core import setup, Extension
		from os import getenv

		cc = getenv("CC")
		if cc == "clang":
		from _sysconfigdata import build_time_vars
		from re import sub
		build_time_vars["CFLAGS"] = sub("-specs=[^ ]+", "", build_time_vars["CFLAGS"])

		from distutils.core import setup, Extension

		from distutils.command.build_ext import build_ext as _build_ext
		from distutils.command.install_lib import install_lib as _install_lib