On Wed, Feb 19, 2014 at 8:30 AM, chaouche yacine <yacinechaouche@yahoo.com>wrote:
What I was trying to accomplish -------------------------------
I tried to upgrade numpy # pip install --upgrade numpy.../chaouche/build/numpy/numpy/numarray/_capi.c:198:undefined reference to `log10' collect2: ld returned 1 exit status error: Command "gcc -pthread -shared -Wl,--as-needed -Wl,--no-undefined -Wl,-z,relro -Wl,-O1 -Wl,--build-id -Wl,--enable-new-dtags build/temp.linux-i686-2.7/numpy/numarray/_capi.o -L/usr/lib -Lbuild/temp.linux-i686-2.7 -lpython2.7 -o build/lib.linux-i686-2.7/numpy/numarray/_capi.so" failed with exit status 1 ---------------------------------------- Rolling back uninstall of numpy Replacing /usr/lib/python2.7/site-packages/numpy-1.6.1-py2.7.egg-info Command /usr/bin/python -c "import setuptools;__file__='/home/chaouche/build/numpy/setup.py';exec(compile(open(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --single-version-externally-managed --record /tmp/pip-lppaDW-record/install-record.txt failed with error code 1 Exception information: Traceback (most recent call last): ... InstallationError: Command /usr/bin/python -c "import setuptools;__file__='/home/chaouche/build/numpy/setup.py';exec(compile(open(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --single-version-externally-managed --record /tmp/pip-lppaDW-record/install-record.txt failed with error code 1
What the problem was --------------------
I eventually figured out that they didn't link to the math library where all those symbols where defined (log10, sqrt, sincos etc.). I found that out by manually trying the gcc command with the -lm flag and it compiled fine.
My question ------------ What files do I need to edit in order to add this -lm flag and install numpy correctly ?
numpy build links against the math library when needed, your problem most likely comes from somewhere else. You should contact the numpy mailing list, and post your full build log there (not just the last lines). David
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