I ran into a problem trying to build and import the numpy_quaternion extension on CentOS-5 x86_64:
$ python setup.py build <SNIP> C compiler: gcc -pthread -fno-strict-aliasing -fPIC -g -O2 -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -fPIC compile options: '-I/data/cosmos2/ska/arch/x86_64-linux_CentOS-5/lib/python2.7/site-packages/numpy/core/include -I/data/cosmos2/ska/arch/x86_64-linux_CentOS-5/include/python2.7 -c' gcc: quaternion.c quaternion.c: In function \u2018quaternion_isfinite\u2019: quaternion.c:55: warning: implicit declaration of function \u2018isfinite\u2019 gcc: numpy_quaternion.c gcc -pthread -shared build/temp.linux-x86_64-2.7/quaternion.o build/temp.linux-x86_64-2.7/numpy_quaternion.o -o build/lib.linux-x86_64-2.7/quaternion/numpy_quaternion.so running scons There was a subsequent import error with "numpy_quaternion.so: undefined symbol: isfinite". This problem does not occur for Ubuntu 11.10 and I presume it is due to CentOS-5 gcc (4.1.2) defaulting to -c89. I fixed this in setup.py by adding "extra_compile_args['-std=c99']" to the add_extension() call. Is there a more general way in numpy to deal with issues like this? Thanks, Tom _______________________________________________ NumPy-Discussion mailing list [email protected] http://mail.scipy.org/mailman/listinfo/numpy-discussion
