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PyCXX does not offer a shared library, it is intended users of this package
compile the sources into their extensions.
The Debian (and Fedora) package offers a pkg-config file named PyCXX.pc which
exports the installed location of the headers and sources required to build, do
not hardcode the path into your files.
Example:
Copy /usr/share/doc/python3-cxx-dev/examples/ into a writeable area from there
you can compile an example by executing these commands:
CFLAGS="$(pkg-config --cflags PyCXX) $(python3-config --cflags)"
SRC="$(pkg-config --variable=srcdir PyCXX)"
g++ -fPIC $CFLAGS simple.cxx \
$SRC/cxxextensions.c $SRC/cxx_extensions.cxx \
$SRC/cxxsupport.cxx \
$SRC/IndirectPythonInterface.cxx \
-shared -o simple.so
python3 test_simple.py
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