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pyo3-build-config: Use "m" ABI tag for libpython 3.7 by default #2288

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Apr 9, 2022
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pyo3-build-config: Use "m" ABI tag for libpython 3.7 by default #2288

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6 changes: 6 additions & 0 deletions CHANGELOG.md
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Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,12 @@ PyO3 versions, please see the [migration guide](https://pyo3.rs/latest/migration
The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).

## Unreleased

### Changed

- Default to "m" ABI tag when choosing `libpython` link name for CPython 3.7 on Unix. [#2288](https://github.com/PyO3/pyo3/pull/2288)

## [0.16.3] - 2022-04-05

### Packaging
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19 changes: 16 additions & 3 deletions pyo3-build-config/src/impl_.rs
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Expand Up @@ -1505,7 +1505,15 @@ fn default_lib_name_unix(
match implementation {
PythonImplementation::CPython => match ld_version {
Some(ld_version) => format!("python{}", ld_version),
None => format!("python{}.{}", version.major, version.minor),
None => {
if version > PythonVersion::PY37 {
// PEP 3149 ABI version tags are finally gone
format!("python{}.{}", version.major, version.minor)
} else {
// Work around https://bugs.python.org/issue36707
format!("python{}.{}m", version.major, version.minor)
}
}
},
PythonImplementation::PyPy => {
if version >= (PythonVersion { major: 3, minor: 9 }) {
Expand Down Expand Up @@ -2142,10 +2150,15 @@ mod tests {
#[test]
fn default_lib_name_unix() {
use PythonImplementation::*;
// Defaults to pythonX.Y for CPython
// Defaults to python3.7m for CPython 3.7
assert_eq!(
super::default_lib_name_unix(PythonVersion { major: 3, minor: 7 }, CPython, None),
"python3.7",
"python3.7m",
);
// Defaults to pythonX.Y for CPython 3.8+
assert_eq!(
super::default_lib_name_unix(PythonVersion { major: 3, minor: 8 }, CPython, None),
"python3.8",
);
assert_eq!(
super::default_lib_name_unix(PythonVersion { major: 3, minor: 9 }, CPython, None),
Expand Down