Linker problem about cuba HOT 7 OPEN

Could you please test if including -fcommon in https://github.com/JohannesBuchner/cuba/blob/master/makesharedlib.sh#L5 works?

from cuba.

No, it doesn't. I've been already trying to add extern coreinit cubafun_; to some header files. It removes linking errors above, but then I was unable run pycuba_demo.py.

from cuba.

Not sure I can be helpful here, but be sure to clear before recompiling. make clean should do it.

from cuba.

I have the same issue. cubafun_ is defined in CSample.c which is included in Vegas.c, Suave.c, Divonne.c, and Cuhre.c. Creating the objects for each cuba function recompiles the CSample source.
My guess is that when creating the static library libcuba.a there is no linking and so no error. On the other hand, the shared library requires the objects to be linked, but it fails for the multiple definitions.
I don't know if you have a ready solution to this, but I am trying to fix it myself. I'll submit a pull request if I succeed

from cuba.

I just realised that it is the veresion of cuba in this repository that is broken. I just reproduced what the makesharedlib script does (added -fPIC to the makefile) and it worked without errors.
I used this version of cuba http://www.feynarts.de/cuba/Cuba-4.2.1.tar.gz

from cuba.

Parallelisation in later Cuba versions causes issues with Python, but Thomas Kuhn let me know that one can disable this with a Makefile flag.

@tboschi can you have a look at this and see if it works with pycuba?

from cuba.

I am not very familiar with pycuba to be honest, but if I found some time I can have a look. Are there specific tests I can do to see if pycuba works as expected?

from cuba.