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Initial support for abi3t.abi3 wheels. #232

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Initial support for abi3t.abi3 wheels. #232

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b736295
allow limited API builds on free-threaded 3.15 and newer
ngoldbaum Mar 2, 2026
5f76ffb
set _Py_OPAQUE_PYOBJECT for limited API free-threaded builds
ngoldbaum Mar 2, 2026
017ea83
define Py_LIMITED_API manually. This seems questionable
ngoldbaum Mar 2, 2026
69d1fa4
Use 3.15t for free-threaded CI
ngoldbaum Apr 16, 2026
904e261
Update for merged PEP 803 implementation
ngoldbaum Apr 16, 2026
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8 changes: 4 additions & 4 deletions .github/workflows/ci.yaml
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Original file line number Diff line number Diff line change
Expand Up @@ -504,9 +504,9 @@ jobs:
with:
matrix_yaml: |
include:
- { runner: ubuntu-24.04, python-version: 3.14t }
- { runner: macos-26, python-version: 3.14t }
- { runner: windows-2025, python-version: 3.14t }
- { runner: ubuntu-24.04, python-version: 3.15t-dev }
- { runner: macos-26, python-version: 3.15t-dev }
- { runner: windows-2025, python-version: 3.15t-dev }

pytest-run-parallel:
needs: make_run_parallel_matrix
Expand Down Expand Up @@ -536,7 +536,7 @@ jobs:

clang_TSAN:
runs-on: ubuntu-24.04
container: ghcr.io/nascheme/numpy-tsan:3.14t
container: ghcr.io/nascheme/numpy-tsan:3.15t-dev
steps:
- uses: actions/checkout@v4

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13 changes: 11 additions & 2 deletions src/cffi/_cffi_include.h
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Expand Up @@ -28,8 +28,13 @@
#if !defined(_CFFI_USE_EMBEDDING) && !defined(Py_LIMITED_API)
# ifdef _MSC_VER
# if !defined(_DEBUG) && !defined(Py_DEBUG) && !defined(Py_TRACE_REFS) && !defined(Py_REF_DEBUG) && !defined(_CFFI_NO_LIMITED_API)
# define Py_LIMITED_API
# if !defined(Py_GIL_DISABLED)
# define Py_LIMITED_API
# else
# define Py_LIMITED_API 0x030f0000
# endif
# endif

# include <pyconfig.h>
/* sanity-check: Py_LIMITED_API will cause crashes if any of these
are also defined. Normally, the Python file PC/pyconfig.h does not
Expand All @@ -49,7 +54,11 @@
# else
# include <pyconfig.h>
# if !defined(Py_DEBUG) && !defined(Py_TRACE_REFS) && !defined(Py_REF_DEBUG) && !defined(_CFFI_NO_LIMITED_API)
# define Py_LIMITED_API
# if !defined(Py_GIL_DISABLED)
# define Py_LIMITED_API
# else
# define Py_LIMITED_API 0x030f0000
# endif
# endif
# endif
#endif
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2 changes: 1 addition & 1 deletion src/cffi/recompiler.py
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Expand Up @@ -9,7 +9,7 @@

USE_LIMITED_API = ((sys.platform != 'win32' or sys.version_info < (3, 0) or
sys.version_info >= (3, 5)) and
not sysconfig.get_config_var("Py_GIL_DISABLED")) # free-threaded doesn't yet support limited API
(not sysconfig.get_config_var("Py_GIL_DISABLED") or sys.version_info >= (3, 15))) # free-threaded doesn't yet support limited API

class GlobalExpr:
def __init__(self, name, address, type_op, size=0, check_value=0):
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10 changes: 6 additions & 4 deletions src/cffi/setuptools_ext.py
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Expand Up @@ -105,10 +105,12 @@ def _set_py_limited_api(Extension, kwds):
kwds['py_limited_api'] = True

if sysconfig.get_config_var("Py_GIL_DISABLED"):
if kwds.get('py_limited_api'):
log.info("Ignoring py_limited_api=True for free-threaded build.")

kwds['py_limited_api'] = False
if sys.version_info < (3, 15):
if kwds.get('py_limited_api'):
log.info("Ignoring py_limited_api=True for free-threaded build.")
kwds['py_limited_api'] = False
else:
kwds["define_macros"].append(("Py_TARGET_ABI3T", "0x030f0000"))

if kwds.get('py_limited_api') is False:
# avoid setting Py_LIMITED_API if py_limited_api=False
Expand Down
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