To fix this:
If you are trying to setup numpy in python virtual env then do the following
sudo apt-get remove python-virtualenv
sudo pip install virtualenv
virtualenv from apt-get doesn't come with it setup tools.
numpy/core/src/npymath/ieee754.c.src:7:29: fatal error: npy_math_common.h: No such file or directory
compilation terminated.
numpy/core/src/npymath/ieee754.c.src:7:29: fatal error: npy_math_common.h: No such file or directory
compilation terminated.
error: Setup script exited with error: Command "gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fPIC -Inumpy/core/include -Ibuild/src.linux-x86_64-2.7/numpy/core/include/numpy -I/usr/include/python2.7 -Ibuild/src.linux-x86_64-2.7/numpy/core/src/private -Ibuild/src.linux-x86_64-2.7/numpy/core/src/private -Ibuild/src.linux-x86_64-2.7/numpy/core/src/private -c build/src.linux-x86_64-2.7/numpy/core/src/npymath/ieee754.c -o build/temp.linux-x86_64-2.7/build/src.linux-x86_64-2.7/numpy/core/src/npymath/ieee754.o" failed with exit status 1
