Note: If you are on Windows, you can not install scipy using pip! Follow this guide instead: https://www.scipy.org/install.html. This blog post is only for Linux-based systems!
When building some of my libraries on Travis, I encountered this error during
sudo pip3 install numpy scipy --upgrade
numpy.distutils.system_info.NotFoundError: No lapack/blas resources
Solution
Install lapack and blas:
sudo apt-get -y install liblapack-dev libblas-dev
In most cases you will then get this error message:
error: library dfftpack has Fortran sources but no Fortran compiler found
Fix that by
sudo apt-get install -y gfortran
In Travis, you can do it like this in .travis.yml:
before_install:
- sudo apt-get -y install liblapack-dev libblas-dev gfortran