PyO3 provides Rust bindings for Python, including tools for creating native Python extension modules. Running and interacting with Python code from a Rust binary is also supported.
This class sets up the cross-compilation environment. Export PYO3_CROSS, PYO3_CROSS_LIB_DIR, PYO3_CROSS_INCLUDE_DIR and CARGO_BUILD_TARGET to inform tools like setuptools-rust we are cross-compiling. Export RUSTFLAGS so cargo can find 'std' and 'core' for target Dynamically generate PyO3 config file and export PYO3_CONFIG_FILE absolute path. This is the trick that finally made pyo3 work. Signed-off-by: Tim Orling <[email protected]> --- meta-python/classes/pyo3.bbclass | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) create mode 100644 meta-python/classes/pyo3.bbclass diff --git a/meta-python/classes/pyo3.bbclass b/meta-python/classes/pyo3.bbclass new file mode 100644 index 0000000000..4bae0949e5 --- /dev/null +++ b/meta-python/classes/pyo3.bbclass @@ -0,0 +1,30 @@ +# +# This class helps make sure that Python extensions built with PyO3 +# and setuptools_rust properly set up the environment for cross compilation +# + +inherit cargo python3-dir siteinfo + +export PYO3_CROSS="1" +export PYO3_CROSS_PYTHON_VERSION="${PYTHON_BASEVERSION}" +export PYO3_CROSS_LIB_DIR="${STAGING_LIBDIR}" +export CARGO_BUILD_TARGET="${HOST_SYS}" +export RUSTFLAGS +export PYO3_PYTHON="${PYTHON}" +export PYO3_CONFIG_FILE="${WORKDIR}/pyo3.config" + +pyo3_do_configure () { + cat > ${WORKDIR}/pyo3.config << EOF +implementation=CPython +version=${PYTHON_BASEVERSION} +shared=true +abi3=false +lib_name=${PYTHON_DIR} +lib_dir=${STAGING_LIBDIR} +pointer_width=${SITEINFO_BITS} +build_flags=WITH_THREAD +suppress_build_script_link_lines=false +EOF +} + +EXPORT_FUNCTIONS do_configure -- 2.30.2
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