Function get_config_from_interpreter

python3-sys/build.rs:315–333

Extract compilation vars from the specified interpreter.

(
    interpreter: &str,
)

/// Extract compilation vars from the specified interpreter.
fn get_config_from_interpreter(
    interpreter: &str,
) -> Result<(String, PythonVersion, Vec<String>), String> {
    let script = "import sys; import sysconfig; print(sys.executable); \
print(sys.version_info[0:2]); \
print(sysconfig.get_config_var('LIBDIR')); \
print(sysconfig.get_config_var('Py_ENABLE_SHARED')); \
print(sysconfig.get_config_var('LDVERSION') or '%s%s' % (sysconfig.get_config_var('py_version_short'), sysconfig.get_config_var('DEBUG_EXT') or '')); \
print(sys.exec_prefix);";
    let out = run_python_script(interpreter, script)?;
    let mut lines: Vec<String> = out
        .split(NEWLINE_SEQUENCE)
        .map(|line| line.to_owned())
        .collect();
    let executable = lines.remove(0);
    let interpreter_version = lines.remove(0);
    let interpreter_version = get_interpreter_version(&interpreter_version)?;
    Ok((executable, interpreter_version, lines))
}

/// Deduce configuration from the 'python' in the current PATH and print
/// cargo vars to stdout.