DOC: describe how to compile extensions #1
Description
This will be a recurring request and we need some document to point to.
Currently on latest mac I get, just after having updated my gcc:
gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -I/Users/dengeman/anaconda3/include -arch x86_64 -I/Users/dengeman/anaconda3/lib/python3.5/site-packages/numpy/core/include -I. -I/Users/dengeman/anaconda3/include/python3.5m -c jivaro.c -o build/temp.macosx-10.7-x86_64-3.5/jivaro.o -fopenmp -std=c99 -O3
clang: error: unsupported option '-fopenmp'
error: command 'gcc' failed with exit status 1
make[1]: *** [jivaro.so] Error 1
make: *** [jivaro] Error 2