From: Arnaldo Carvalho de Melo <[email protected]>
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 <[email protected]>
Cc: David Ahern <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Wang Nan <[email protected]>
Link: http://lkml.kernel.org/n/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
---
tools/perf/util/setup.py | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/tools/perf/util/setup.py b/tools/perf/util/setup.py
index c8680984d2d6..af415febbc46 100644
--- a/tools/perf/util/setup.py
+++ b/tools/perf/util/setup.py
@@ -1,8 +1,15 @@
#!/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
--
2.9.3
