Messages in this thread | | | Date | Mon, 11 Jan 2016 10:28:41 +0100 | From | Jiri Olsa <> | Subject | Re: [PATCH 1/6] perf tools: Add -lutil in python lib list for broken python-config |
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On Fri, Jan 08, 2016 at 02:23:56PM +0000, Wang Nan wrote: > On some system the perf-config is broken, causes link failure like this: > > /usr/lib64/python2.7/config/libpython2.7.a(posixmodule.o): In function `posix_forkpty': > /opt/wangnan/yocto-build/tmp-eglibc/work/x86_64-oe-linux/python/2.7.3-r0.3.1/Python-2.7.3/./Modules/posixmodule.c:3816: undefined reference to `forkpty' > /usr/lib64/python2.7/config/libpython2.7.a(posixmodule.o): In function `posix_openpty': > /opt/wangnan/yocto-build/tmp-eglibc/work/x86_64-oe-linux/python/2.7.3-r0.3.1/Python-2.7.3/./Modules/posixmodule.c:3756: undefined reference to `openpty' > collect2: error: ld returned 1 exit status > make[1]: *** [/home/wangnan/kernel-hydrogen/tools/perf/out/perf] Error 1 > make: *** [all] Error 2 > > $ python-config --libs > -lpthread -ldl -lpthread -lutil -lm -lpython2.7
so your 'python-config --libs' shows -lutil and you still get the build failure?
after your fix I can see double -lutil in PYTHON_EMBED_LIBADD, which is probably not a problem but could be ommited I think
> > In this case a '-lutil' should be appended to -lpython2.7. > > (I know we have --start-group and --end-group. I can see them in > command line of collect2 by strace. However it doesn't work. Seems > I have a broken environment?)
hum, how is this related to start/end -group options?
thanks, jirka
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