- check for ``dup()`` libc function
- handle missing ``F_DUPFD`` in ``dup2()`` replacement function
- add workaround for WASI libc bug in MSG_TRUNC
- ESHUTDOWN is missing, use EPIPE instead
- POLLPRI is missing, define as 0 (no-op)
All install targets use the "all" target as synchronization point to
prevent race conditions with PGO builds. PGO builds use recursive make,
which can lead to two parallel `./python setup.py build` processes that
step on each others toes.
"test" targets now correctly compile PGO build in a clean repo.
Python now always use the ``%zu`` and ``%zd`` printf formats to
format a size_t or Py_ssize_t number. Building Python 3.12 requires a
C11 compiler, so these printf formats are now always supported.
* PyObject_Print() and _PyObject_Dump() now use the printf %zd format
to display an object reference count.
* Update PY_FORMAT_SIZE_T comment.
* Remove outdated notes about the %zd format in PyBytes_FromFormat()
and PyUnicode_FromFormat() documentations.
* configure no longer checks for the %zd format and no longer defines
PY_FORMAT_SIZE_T macro in pyconfig.h.
* pymacconfig.h no longer undefines PY_FORMAT_SIZE_T: macOS 10.4 is
no longer supported. Python 3.12 now requires macOS 10.6 (Snow
Leopard) or newer.
At compile time, '+z' is already properly used with HP aCC, and shared
libraries are correctly linked with '+b'. The '-fPIC' switch can safely be
dropped.
This makes macOS gdbm provided by Homebrew not segfault through correct
selection of the linked library (-lgdbm_compat) *AND* the correct ndbm-style
header (gdbm-ndbm.h instead of the invalid ndbm.h).
* Move the code for generating Modules/_sre/sre_constants.h from
Lib/re/_constants.py into a separate script
Tools/scripts/generate_sre_constants.py.
* Add target `regen-sre` in the makefile.
* Make target `regen-all` depending on `regen-sre`.
Shared extension on Emscripten now have suffix
``.cpython-311-wasm32-emscripten.so`` (JS loader) and
``.cpython-311-wasm32-emscripten.wasm`` (WebAssembly code).
`main` branch is failing, see https://dev.azure.com/python/cpython/_build/results?buildId=96616&view=logs&j=4db1505a-29e5-5cc0-240b-53a8a2681f75&t=a975920c-8356-5388-147c-613d5fab0171
Logs:
```
PATH=./venv/bin:$PATH sphinx-lint -i tools -i ./venv -i README.rst
No problems found.
PATH=./venv/bin:$PATH sphinx-lint ../Misc/NEWS.d/next/
[1] ../Misc/NEWS.d/next/Library/2022-02-09-00-53-23.[bpo-45863]().zqQXVv.rst:0: No newline at end of file (no-newline-at-end-of-file).
[1] ../Misc/NEWS.d/next/Build/2022-01-19-11-08-32.[bpo-46430]().k403m_.rst:0: No newline at end of file (no-newline-at-end-of-file).
2 problems with severity 1 found.
```
This PR fixes these two problems, so `main` is green again.
Related PR: https://github.com/python/cpython/pull/31097
CC @JulienPalard
Automerge-Triggered-By: GH:JulienPalard
Building Python now requires a C99 <math.h> header file providing a
NAN constant, or the __builtin_nan() built-in function. If a platform
does not support Not-a-Number (NaN), the Py_NO_NAN macro can be
defined in the pyconfig.h file.
This reduces the size of the data segment by **300 KB** of the executable because if the modules are deep-frozen then the marshalled frozen data just wastes space. This was inspired by comment by @gvanrossum in https://github.com/python/cpython/pull/29118#issuecomment-958521863. Note: There is a new option `--deepfreeze-only` in `freeze_modules.py` to change this behavior, it is on be default to save disk space.
```console
# du -s ./python before
27892 ./python
# du -s ./python after
27524 ./python
```
Automerge-Triggered-By: GH:ericsnowcurrently
Christian Heimes
Oleg Iarygin
neonene
Shixian Li
Kumar Aditya
Victor Stinner
Michael Osipov
Pablo Galindo
Łukasz Langa
Serhiy Storchaka
Steve Dower
Erlend Egeberg Aasland
Brett Cannon
Nikita Sobolev