fn default_cross_compile()

in include/pyo3/pyo3-build-config/src/impl_.rs [1545:1607]

• 57 lines of code
• 7 McCabe index (conditional complexity)

fn default_cross_compile(cross_compile_config: &CrossCompileConfig) -> Result<InterpreterConfig> {
    let version = cross_compile_config
        .version
        .or_else(get_abi3_version)
        .ok_or_else(||
            format!(
                "PYO3_CROSS_PYTHON_VERSION or an abi3-py3* feature must be specified \
                when cross-compiling and PYO3_CROSS_LIB_DIR is not set.\n\
                = help: see the PyO3 user guide for more information: https://pyo3.rs/v{}/building-and-distribution.html#cross-compiling",
                env!("CARGO_PKG_VERSION")
            )
        )?;

    let abi3 = is_abi3();
    let implementation = cross_compile_config
        .implementation
        .unwrap_or(PythonImplementation::CPython);
    let gil_disabled = cross_compile_config.abiflags.as_deref() == Some("t");

    let lib_name = default_lib_name_for_target(
        version,
        implementation,
        abi3,
        gil_disabled,
        &cross_compile_config.target,
    );

    let mut lib_dir = cross_compile_config.lib_dir_string();

    // Auto generate python3.dll import libraries for Windows targets.
    #[cfg(feature = "python3-dll-a")]
    if lib_dir.is_none() {
        let py_version = if implementation == PythonImplementation::CPython && abi3 && !gil_disabled
        {
            None
        } else {
            Some(version)
        };
        lib_dir = self::import_lib::generate_import_lib(
            &cross_compile_config.target,
            cross_compile_config
                .implementation
                .unwrap_or(PythonImplementation::CPython),
            py_version,
            None,
        )?;
    }

    Ok(InterpreterConfig {
        implementation,
        version,
        shared: true,
        abi3,
        lib_name,
        lib_dir,
        executable: None,
        pointer_width: None,
        build_flags: BuildFlags::default(),
        suppress_build_script_link_lines: false,
        extra_build_script_lines: vec![],
        python_framework_prefix: None,
    })
}