usage: cython [-h] [-V] [-l] [-I INCLUDE_PATH] [-o OUTPUT_FILE] [-t] [-f] [-v] [-p]
              [--cleanup GENERATE_CLEANUP_CODE] [--cache] [-w WORKING_PATH] [--gdb]
              [--gdb-outdir GDB_OUTDIR] [-D] [-a] [--annotate-fullc]
              [--annotate-coverage ANNOTATE_COVERAGE_XML] [--line-directives] [-+] [--embed]
              [--embed-modules EMBED_MODULES] [-2] [-3] [--3str] [--lenient]
              [--capi-reexport-cincludes] [--fast-fail] [-Werror] [-Wextra] [-X NAME=VALUE,...]
              [-E NAME=VALUE,...] [--module-name MODULE_NAME] [-M]
              [--generate-shared SHARED_C_FILE_PATH] [--shared SHARED_UTILITY_QUALIFIED_NAME]
              [sources ...]

Cython (https://cython.org/) is a compiler for code written in the Cython language.  Cython is based on Pyrex by Greg Ewing.

positional arguments:
  sources

optional arguments:
  -h, --help            show this help message and exit
  -V, --version         Display version number of cython compiler
  -l, --create-listing  Write error messages to a listing file
  -I INCLUDE_PATH, --include-dir INCLUDE_PATH
                        Search for include files in named directory (multiple include directories
                        are allowed).
  -o OUTPUT_FILE, --output-file OUTPUT_FILE
                        Specify name of generated C file
  -t, --timestamps      Only compile newer source files
  -f, --force           Compile all source files (overrides implied -t)
  -v, --verbose         Be verbose, print file names on multiple compilation
  -p, --embed-positions
                        If specified, the positions in Cython files of each function definition is
                        embedded in its docstring.
  --cleanup GENERATE_CLEANUP_CODE
                        Release interned objects on python exit, for memory debugging. Level
                        indicates aggressiveness, default 0 releases nothing.
  --cache               Enables Cython compilation cache.
  -w WORKING_PATH, --working WORKING_PATH
                        Sets the working directory for Cython (the directory modules are searched
                        from)
  --gdb                 Output debug information for cygdb
  --gdb-outdir GDB_OUTDIR
                        Specify gdb debug information output directory. Implies --gdb.
  -D, --no-docstrings   Strip docstrings from the compiled module.
  -a, --annotate        Produce a colorized HTML version of the source.
  --annotate-fullc      Produce a colorized HTML version of the source which includes entire
                        generated C/C++-code.
  --annotate-coverage ANNOTATE_COVERAGE_XML
                        Annotate and include coverage information from cov.xml.
  --line-directives     Produce #line directives pointing to the .pyx source
  -+, --cplus           Output a C++ rather than C file.
  --embed               Generate a main() function that embeds the Python interpreter. Pass
                        --embed=<method_name> for a name other than main().
  --embed-modules EMBED_MODULES
  -2                    Compile based on Python-2 syntax and code semantics.
  -3                    Compile based on Python-3 syntax and code semantics.
  --3str                Compile based on Python-3 syntax and code semantics (same as -3 since
                        Cython 3.1).
  --lenient             Change some compile time errors to runtime errors to improve Python
                        compatibility
  --capi-reexport-cincludes
                        Add cincluded headers to any auto-generated header files.
  --fast-fail           Abort the compilation on the first error
  -Werror, --warning-errors
                        Make all warnings into errors
  -Wextra, --warning-extra
                        Enable extra warnings
  -X NAME=VALUE,..., --directive NAME=VALUE,...
                        Overrides a compiler directive
  -E NAME=VALUE,..., --compile-time-env NAME=VALUE,...
                        Provides compile time env like DEF would do.
  --module-name MODULE_NAME
                        Fully qualified module name. If not given, is deduced from the import path
                        if source file is in a package, or equals the filename otherwise.
  -M, --depfile         produce depfiles for the sources
  --generate-shared SHARED_C_FILE_PATH
                        Generates shared module with specified name.
  --shared SHARED_UTILITY_QUALIFIED_NAME
                        Imports utility code from shared module specified by fully qualified
                        module name.

Environment variables:
  CYTHON_CACHE_DIR: the base directory containing Cython's caches.