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authorArnaldo Carvalho de Melo <acme@redhat.com>2020-04-01 15:33:59 +0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2020-04-03 16:04:59 +0300
commit9ff76cea4e9e6d49a6f764ae114fc0fb8de97816 (patch)
tree9660edc7ca3ec0ead9838ccedcf07e2d58a84a9e /tools
parentb9c9ce4e598e012ca7c1813fae2f4d02395807de (diff)
downloadlinux-9ff76cea4e9e6d49a6f764ae114fc0fb8de97816.tar.xz
perf python: Fix clang detection to strip out options passed in $CC
The clang check in the python setup.py file expected $CC to be just the name of the compiler, not the compiler + options, i.e. all options were expected to be passed in $CFLAGS, this ends up making it fail in systems where CC is set to, e.g.: "aarch64-linaro-linux-gcc --sysroot=/oe/build/tmp/work/juno-linaro-linux/perf/1.0-r9/recipe-sysroot" Like this: $ python3 >>> from subprocess import Popen >>> a = Popen(["aarch64-linux-gnu-gcc --sysroot=/oe/build/tmp/work/juno-linaro-linux/perf/1.0-r9/recipe-sysroot", "-v"]) Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/usr/lib/python3.6/subprocess.py", line 729, in __init__ restore_signals, start_new_session) File "/usr/lib/python3.6/subprocess.py", line 1364, in _execute_child raise child_exception_type(errno_num, err_msg, err_filename) FileNotFoundError: [Errno 2] No such file or directory: 'aarch64-linux-gnu-gcc --sysroot=/oe/build/tmp/work/juno-linaro-linux/perf/1.0-r9/recipe-sysroot': 'aarch64-linux-gnu-gcc --sysroot=/oe/build/tmp/work/juno-linaro-linux/perf/1.0-r9/recipe-sysroot' >>> Make it more robust, covering this case, by passing cc.split()[0] as the first arg to popen(). Fixes: a7ffd416d804 ("perf python: Fix clang detection when using CC=clang-version") Reported-by: Daniel Díaz <daniel.diaz@linaro.org> Reported-by: Naresh Kamboju <naresh.kamboju@linaro.org> Tested-by: Daniel Díaz <daniel.diaz@linaro.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ilie Halip <ilie.halip@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lore.kernel.org/lkml/20200401124037.GA12534@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools')
-rw-r--r--tools/perf/util/setup.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/perf/util/setup.py b/tools/perf/util/setup.py
index 8a065a6f9713..347b2c0789e4 100644
--- a/tools/perf/util/setup.py
+++ b/tools/perf/util/setup.py
@@ -3,7 +3,7 @@ from subprocess import Popen, PIPE
from re import sub
cc = getenv("CC")
-cc_is_clang = b"clang version" in Popen([cc, "-v"], stderr=PIPE).stderr.readline()
+cc_is_clang = b"clang version" in Popen([cc.split()[0], "-v"], stderr=PIPE).stderr.readline()
def clang_has_option(option):
return [o for o in Popen([cc, option], stderr=PIPE).stderr.readlines() if b"unknown argument" in o] == [ ]