Building PyJNIus

Building PyJNIus is necessary for development purposes, or if there is no pre-built binary for your particular platform.

Like installation of PyJNIus, building PyJNIus requires a Java Development Kit (JDK) to be installed.

Apart from the JDK, the build requirements for each platform are as follows:

• Linux: the GNU Compiler Collection (GCC), e.g. using apt-get install build-essentials on Debian-based distributions.

• Windows: Microsoft Visual C++ Build Tools (the command-line tools subset of Visual Studio). For more information or options, see Python’s Windows Compilers wiki.

• macOS: Xcode command-line tools.

In all cases, after checking out PyJNIus from GitHub, it can be built and installed using:

pip install .

This installs Cython (as specified in the pyproject.toml) in a Python build environment. On all platforms, if PyJNIus cannot find your JDK, you can set the JAVA_HOME environment variable (this is often needed on Windows).

If you want to compile the PyJNIus extension within the directory for any development, just type:

make

You can run the tests suite to make sure everything is running right:

make tests

In these cases, you may need to have Cython and pytest installed in the current Python environment.