primecountpy 0.0.0

Cython interface for C++ primecount library

Primecount Cython interface

WIP on splitting out primecount Sage spkg with its cython interface

testing:

1. Install primecount C++ library

cd /tmp/
git clone https://github.com/kimwalisch/primecount
cd primecount
cmake . -DBUILD_SHARED_LIBS=ON
make -j
sudo make install
sudo ldconfig # linux only

2. in this repo, do

python3 setup.py install --user

python3 and

>>> import primecountpy as primecount
>>> primecount.pi(1000)

Building dependencies without root

set the desired location, e.g. export WDIR=$HOME/tmp

install libprimesieve as follows:

cd primesieve
cmake -DBUILD_STATIC_LIBS=OFF -DBUILD_SHARED_LIBS=ON -DCMAKE_INSTALL_PREFIX=$WDIR .
make -j  install     # no sudo!

install primecount as follows

cmake -DBUILD_STATIC_LIBS=OFF -DBUILD_SHARED_LIBS=ON \
       -DCMAKE_INSTALL_PREFIX=$WDIR \
      -DCMAKE_INSTALL_RPATH_USE_LINK_PATH=TRUE  -DCMAKE_INSTALL_RPATH=$WDIR \
      -DCMAKE_SKIP_BUILD_RPATH=FALSE  -DBUILD_LIBPRIMESIEVE=OFF  \
      -DCMAKE_FIND_ROOT_PATH=$WDIR/lib/cmake  \
      -DCMAKE_FIND_ROOT_PATH_MODE_LIBRARY=ONLY .
make -j install # no sudo!

After this, build/install the package with pip

pip3 install -e . --prefix=~/.local --global-option=build_ext  --global-option="--library-dirs=$WDIR" --global-option="--rpath=$WDIR"

At this point, you can test it with pytest (see below for details on pytest)

pytest --doctest-cython primecountpy -v

Testing with pytest

install pre-requisites:

pip3 install pytest pytest-cython

Clean up, and build in-place

git clean -fdx
python3 setup.py build_ext --inplace
pytest --doctest-cython primecountpy -v

TODO:

make it ready for PyPI