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Cython — scikit-build 0.18.2.dev9+ga2afff2 documentation

Find cython executable.

This module will set the following variables in your project:

CYTHON_EXECUTABLE

path to the cython program

CYTHON_VERSION

version of cython

CYTHON_FOUND

true if the program was found

For more information on the Cython project, see https://cython.org/.

Cython is a language that makes writing C extensions for the Python language as easy as Python itself.

The following functions are defined:

add_cython_target¶

Create a custom rule to generate the source code for a Python extension module using cython.

add_cython_target(<Name> [<CythonInput>]

[EMBED_MAIN] [C | CXX] [PY2 | PY3] [OUTPUT_VAR <OutputVar>])

<Name> is the name of the new target, and <CythonInput> is the path to a cython source file. Note that, despite the name, no new targets are created by this function. Instead, see OUTPUT_VAR for retrieving the path to the generated source for subsequent targets.

If only <Name> is provided, and it ends in the “.pyx” extension, then it is assumed to be the <CythonInput>. The name of the input without the extension is used as the target name. If only <Name> is provided, and it does not end in the “.pyx” extension, then the <CythonInput> is assumed to be <Name>.pyx.

The Cython include search path is amended with any entries found in the INCLUDE_DIRECTORIES property of the directory containing the <CythonInput> file. Use include_directories to add to the Cython include search path.

Options:

EMBED_MAIN

Embed a main() function in the generated output (for stand-alone applications that initialize their own Python runtime).

C | CXX

Force the generation of either a C or C++ file. By default, a C file is generated, unless the C language is not enabled for the project; in this case, a C++ file is generated by default.

PY2 | PY3

Force compilation using either Python-2 or Python-3 syntax and code semantics. By default, Python-2 syntax and semantics are used if the major version of Python found is 2. Otherwise, Python-3 syntax and semantics are used.

OUTPUT_VAR <OutputVar>

Set the variable <OutputVar> in the parent scope to the path to the generated source file. By default, <Name> is used as the output variable name.

Defined variables:

<OutputVar>

The path of the generated source file.

Cache variables that affect the behavior include:

CYTHON_ANNOTATE

Whether to create an annotated .html file when compiling.

CYTHON_FLAGS

Additional flags to pass to the Cython compiler.

find_package(Cython)

# Note: In this case, either one of these arguments may be omitted; their
# value would have been inferred from that of the other.
add_cython_target(cy_code cy_code.pyx)

add_library(cy_code MODULE ${cy_code})
target_link_libraries(cy_code ...)

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