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Merge pull request #896 from messense/well-known-sysconfig
Add hardcoded well-known sysconfigs for effortless cross compiling
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,103 @@ | ||
| use super::InterpreterKind; | ||
| use crate::target::{Arch, Os}; | ||
| use once_cell::sync::Lazy; | ||
| use serde::Deserialize; | ||
| use std::collections::HashMap; | ||
|
|
||
| /// Wellknown Python interpreter sysconfig values | ||
| static WELLKNOWN_SYSCONFIG: Lazy<HashMap<Os, HashMap<Arch, Vec<InterpreterConfig>>>> = | ||
| Lazy::new(|| { | ||
| let mut sysconfig = HashMap::new(); | ||
| let sysconfig_linux = serde_json::from_slice(include_bytes!("sysconfig-linux.json")) | ||
| .expect("invalid sysconfig-linux.json"); | ||
| sysconfig.insert(Os::Linux, sysconfig_linux); | ||
| let sysconfig_macos = serde_json::from_slice(include_bytes!("sysconfig-macos.json")) | ||
| .expect("invalid sysconfig-macos.json"); | ||
| sysconfig.insert(Os::Macos, sysconfig_macos); | ||
| sysconfig | ||
| }); | ||
|
|
||
| /// Some of the sysconfigdata of Python interpreter we care about | ||
| #[derive(Debug, Clone, Deserialize, Eq, PartialEq)] | ||
| pub struct InterpreterConfig { | ||
| /// Python's major version | ||
| pub major: usize, | ||
| /// Python's minor version | ||
| pub minor: usize, | ||
| /// cpython or pypy | ||
| #[serde(rename = "interpreter")] | ||
| pub interpreter_kind: InterpreterKind, | ||
| /// For linux and mac, this contains the value of the abiflags, e.g. "m" | ||
| /// for python3.7m or "dm" for python3.6dm. Since python3.8, the value is | ||
| /// empty. On windows, the value was always None. | ||
| /// | ||
| /// See PEP 261 and PEP 393 for details | ||
| pub abiflags: String, | ||
| /// Suffix to use for extension modules as given by sysconfig. | ||
| pub ext_suffix: String, | ||
| /// Part of sysconfig's SOABI specifying {major}{minor}{abiflags} | ||
| /// | ||
| /// Note that this always `None` on windows | ||
| pub abi_tag: Option<String>, | ||
| /// Pointer width | ||
| pub calcsize_pointer: Option<usize>, | ||
| } | ||
|
|
||
| impl InterpreterConfig { | ||
| /// Lookup a wellknown sysconfig for a given Python interpreter | ||
| pub fn lookup( | ||
| os: Os, | ||
| arch: Arch, | ||
| python_impl: InterpreterKind, | ||
| python_version: (usize, usize), | ||
| ) -> Option<&'static Self> { | ||
| let (major, minor) = python_version; | ||
| if let Some(os_sysconfigs) = WELLKNOWN_SYSCONFIG.get(&os) { | ||
| if let Some(sysconfigs) = os_sysconfigs.get(&arch) { | ||
| return sysconfigs.iter().find(|s| { | ||
| s.interpreter_kind == python_impl && s.major == major && s.minor == minor | ||
| }); | ||
| } | ||
| } | ||
| None | ||
| } | ||
|
|
||
| /// Generate pyo3 config file content | ||
| pub fn pyo3_config_file(&self) -> String { | ||
| let mut content = format!( | ||
| r#"implementation={implementation} | ||
| version={major}.{minor} | ||
| shared=true | ||
| abi3=false | ||
| build_flags=WITH_THREAD | ||
| suppress_build_script_link_lines=false"#, | ||
| implementation = self.interpreter_kind, | ||
| major = self.major, | ||
| minor = self.minor, | ||
| ); | ||
| if let Some(pointer_width) = self.calcsize_pointer { | ||
| content.push_str(&format!("\npointer_width={}", pointer_width * 8)); | ||
| } | ||
| content | ||
| } | ||
| } | ||
|
|
||
| #[cfg(test)] | ||
| mod test { | ||
| use super::*; | ||
|
|
||
| #[test] | ||
| fn test_load_sysconfig() { | ||
| let linux_sysconfig = WELLKNOWN_SYSCONFIG.get(&Os::Linux).unwrap(); | ||
| assert!(linux_sysconfig.contains_key(&Arch::X86_64)); | ||
| } | ||
|
|
||
| #[test] | ||
| fn test_pyo3_config_file() { | ||
| let sysconfig = | ||
| InterpreterConfig::lookup(Os::Linux, Arch::X86_64, InterpreterKind::CPython, (3, 10)) | ||
| .unwrap(); | ||
| let config_file = sysconfig.pyo3_config_file(); | ||
| assert_eq!(config_file, "implementation=CPython\nversion=3.10\nshared=true\nabi3=false\nbuild_flags=WITH_THREAD\nsuppress_build_script_link_lines=false\npointer_width=64"); | ||
| } | ||
| } |
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