sandbox/bugs/make_python

    This is solved, see below.

    Thanks for this great product. I’m new here, but I’m already finding it very useful.

    I encontered a problem when trying to use the python integration.

    The steps to reproduce are the following 
    cd basilisk/src/
make stream.py

    The same happens when manually creating stream.c elsewhere.

    The error is the following 
    $ make stream.py
/home/dd22/basilisk/src/Makefile.defs:8: Makefile.tests: No such file or directory
/home/dd22/basilisk/src/Makefile.defs:180: Makefile.deps: No such file or directory
sh /home/dd22/basilisk/src/tests.sh
updating Makefile.tests
updating Makefile.deps
/home/dd22/basilisk/src/qcc -MD -o atomisation.s.d atomisation.c
/home/dd22/basilisk/src/qcc -MD -o brusselator.s.d brusselator.c
/home/dd22/basilisk/src/qcc -MD -o bubble.s.d bubble.c
/home/dd22/basilisk/src/qcc -MD -o distance.s.d distance.c
/home/dd22/basilisk/src/qcc -MD -o ginzburg-landau.s.d ginzburg-landau.c
/home/dd22/basilisk/src/qcc -MD -o hele-shaw.s.d hele-shaw.c
/home/dd22/basilisk/src/qcc -MD -o inversion.s.d inversion.c
/home/dd22/basilisk/src/qcc -MD -o isotropic.s.d isotropic.c
/home/dd22/basilisk/src/qcc -MD -o karman.s.d karman.c
/home/dd22/basilisk/src/qcc -MD -o life.s.d life.c
ln -s madsen.c madsen-sv.c
/home/dd22/basilisk/src/qcc -MD -o madsen-sv.s.d madsen-sv.c
/home/dd22/basilisk/src/qcc -MD -o madsen.s.d madsen.c
/home/dd22/basilisk/src/qcc -MD -o shoal.s.d shoal.c
/home/dd22/basilisk/src/qcc -MD -o sphere.s.d sphere.c
/home/dd22/basilisk/src/qcc -MD -o stream.s.d stream.c
/home/dd22/basilisk/src/qcc -MD -o swasi.s.d swasi.c
/home/dd22/basilisk/src/qcc -MD -o tangaroa.s.d tangaroa.c
/home/dd22/basilisk/src/qcc -MD -o tides.s.d tides.c
/home/dd22/basilisk/src/qcc -MD -o tsunami.s.d tsunami.c
/home/dd22/basilisk/src/qcc -MD -o turbulence.s.d turbulence.c
/home/dd22/basilisk/src/qcc -MD -tags BENCHMARK.page
/home/dd22/basilisk/src/qcc -MD -tags README.page
/home/dd22/basilisk/src/qcc -MD -tags atomisation.c.page
/home/dd22/basilisk/src/qcc -MD -tags brusselator.c.page
/home/dd22/basilisk/src/qcc -MD -tags bubble.c.page
/home/dd22/basilisk/src/qcc -MD -tags distance.c.page
/home/dd22/basilisk/src/qcc -MD -tags ginzburg-landau.c.page
/home/dd22/basilisk/src/qcc -MD -tags isotropic.c.page
/home/dd22/basilisk/src/qcc -MD -tags karman.c.page
/home/dd22/basilisk/src/qcc -MD -tags life.c.page
/home/dd22/basilisk/src/qcc -MD -tags madsen.c.page
/home/dd22/basilisk/src/qcc -MD -tags poisson.py.page
/home/dd22/basilisk/src/qcc -MD -tags shoal.c.page
/home/dd22/basilisk/src/qcc -MD -tags sphere.c.page
/home/dd22/basilisk/src/qcc -MD -tags swasi.c.page
/home/dd22/basilisk/src/qcc -MD -tags tangaroa.c.page
/home/dd22/basilisk/src/qcc -MD -tags tsunami.c.page
/home/dd22/basilisk/src/qcc -MD -tags turbulence.c.page
/home/dd22/basilisk/src/qcc -MD -tags turbulence.py.page
updating Makefile.deps
/home/dd22/basilisk/src/qcc -O2 -fopenmp -g -Wall -pipe -D_FORTIFY_SOURCE=2 -python -c -fpic -I/usr/include/python2.7 stream.c
qcc: warning: OpenMP cannot be used with Python (yet): switching it off
stream-cpp.c:1:20: fatal error: Python.h: No such file or directory
compilation terminated.
/home/dd22/basilisk/src/Makefile.defs:140: recipe for target 'stream.i' failed
make: *** [stream.i] Error 1
make: *** Deleting file 'stream.i'
    My environment variables are 
    HOSTNAME=runner-cb3ac902-project-215-concurrent-0
OLDPWD=/home/dd22
BASILISK=/home/dd22/basilisk/src
PWD=/home/dd22/basilisk/src/examples
HOME=/home/dd22
SHLVL=1
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/home/dd22/basilisk/src
_=/usr/bin/env

    This is a docker container, but I don’t think the problem is related with docker.

    I did the installation using wget, on 2018-oct-10. By the way, how can I get a specific tag of the code using wget?

    UPDATE:

    If I copy this file http://basilisk.fr/src/navier-stokes/stream.i to my local directory, the error is different. 
    swig -I/home/dd22/basilisk/src -python  stream.i
No module name specified using %module or -module.

    UPDATE [SOLVED]:

    I didn’t say before, the OS is debian/stretch. I solved this problem with 
    apt-get install libpython2.7-dev python-numpy python-matplotlib
    Moreover, since the is no display in my container, it was also necessary to 
    export MPLBACKEND=Agg

    and to add plt.savefig(“{}.png”.format(i)) to the graph function.