Commit 5508672d authored Aug 14, 2018 by Arnaldo Carvalho de Melo

perf python: Remove -mcet and -fcf-protection when building with clang

These options are not present in older clang versions, so when we build
for a distro that has a gcc new enough to have these options and that
the distro python build config settings use them but clang doesn't
support, b00m.

This is the case with fedora 28 and rawhide, so check if clang has the
options and remove the missing ones from CFLAGS.

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: https://lkml.kernel.org/n/tip-7asds7yn6gzg6ns1lw17ukul@git.kernel.org

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

parent 34435336

tools/perf/util/setup.py

+9 −1

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

		from os import getenv
		from subprocess import Popen, PIPE
		from re import sub

		def clang_has_option(option):
		return [o for o in Popen(['clang', option], stderr=PIPE).stderr.readlines() if "unknown argument" in o] == [ ]

		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"])
		if not clang_has_option("-mcet"):
		build_time_vars["CFLAGS"] = sub("-mcet", "", build_time_vars["CFLAGS"])
		if not clang_has_option("-fcf-protection"):
		build_time_vars["CFLAGS"] = sub("-fcf-protection", "", build_time_vars["CFLAGS"])

		from distutils.core import setup, Extension

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