[lpyu001]

Emscripten 6.0.1 deprecated -sUSE_PTHREADS and -sMEMORY64 in favor of the standard -pthread and -m64 flags (emscripten-core/emscripten#27025). With the currently pinned Emscripten 6.0.10, both emit a -Wdeprecated warning at link time:

emcc: warning: USE_PTHREADS is deprecated (prefer the standard -pthread flag). [-Wdeprecated]
emcc: warning: MEMORY64 is deprecated (prefer the standard -m64 or --target=wasm64 flags). [-Wdeprecated]

This PR switches configure.ac to the standard flags:

• --enable-wasm-pthreads: -sUSE_PTHREADS → -pthread in LDFLAGS_NODIST. The existing -pthread in CFLAGS_NODIST is not passed to the link step, so the linker flag is still needed.
• wasm64-*-emscripten: -sMEMORY64=1 → -m64 in CFLAGS and LDFLAGS.
• Platforms/emscripten/README.md is updated to match.

I've also removed the Emscripten-specific NDOTDOTS = 48 workaround from test_glob_dotdot in Lib/test/test_pathlib/test_pathlib.py. Its comment says it can be removed once emscripten-core/emscripten#24591 is merged. That PR (don't return ELOOP on a path with many .. components) was merged in June 2025 and should be in 4.0.11 and later, well below the pinned 6.0.10. The test now uses NDOTDOTS = 50 on all platforms.

• Issue: Emscripten: Remove obsolete pthread_getattr_np workaround in ceval.c #160873

[lpyu001]

cc @hoodmane

[hoodmane]

Looks good to me.

[freakboy3742]

👍 Makes sense - thanks for the cleanup!

[bedevere-bot]

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot x86 Debian Non-Debug with X 3.x (tierless) has failed when building commit 67683da.

What do you need to do:

1. Don't panic.
2. Check the buildbot page in the devguide if you don't know what the buildbots are or how they work.
3. Go to the page of the buildbot that failed (https://buildbot.python.org/#/builders/1245/builds/10003) and take a look at the build logs.
4. Check if the failure is related to this commit (67683da) or if it is a false positive.
5. If the failure is related to this commit, please, reflect that on the issue and make a new Pull Request with a fix.

You can take a look at the buildbot page here:

https://buildbot.python.org/#/builders/1245/builds/10003

Summary of the results of the build (if available):

==

Click to see traceback logs

Traceback (most recent call last):
  File �[35m"/buildbot/buildarea/3.x.ware-debian-x86.nondebug/build/Lib/test/test_urllib2net.py"�[0m, line �[35m286�[0m, in �[35m_test_urls�[0m
    f = urlopen(url, req, support.INTERNET_TIMEOUT)
  File �[35m"/buildbot/buildarea/3.x.ware-debian-x86.nondebug/build/Lib/urllib/request.py"�[0m, line �[35m489�[0m, in �[35mopen�[0m
    response = self._open(req, data)
  File �[35m"/buildbot/buildarea/3.x.ware-debian-x86.nondebug/build/Lib/urllib/request.py"�[0m, line �[35m506�[0m, in �[35m_open�[0m
    result = self._call_chain(self.handle_open, protocol, protocol +
                              '_open', req)
  File �[35m"/buildbot/buildarea/3.x.ware-debian-x86.nondebug/build/Lib/urllib/request.py"�[0m, line �[35m466�[0m, in �[35m_call_chain�[0m
    result = func(*args)
  File �[35m"/buildbot/buildarea/3.x.ware-debian-x86.nondebug/build/Lib/urllib/request.py"�[0m, line �[35m1646�[0m, in �[35mftp_open�[0m
    raise URLError(f"ftp error: {exp}") from exp
�[1;35murllib.error.URLError�[0m: �[35m<urlopen error ftp error: 425 Security: Bad IP connecting.>�[0m


Traceback (most recent call last):
  File �[35m"/buildbot/buildarea/3.x.ware-debian-x86.nondebug/build/Lib/test/test_urllib2net.py"�[0m, line �[35m286�[0m, in �[35m_test_urls�[0m
    f = urlopen(url, req, support.INTERNET_TIMEOUT)
  File �[35m"/buildbot/buildarea/3.x.ware-debian-x86.nondebug/build/Lib/test/test_urllib2net.py"�[0m, line �[35m32�[0m, in �[35mwrapped�[0m
    return _retry_thrice(func, exc, *args, **kwargs)
  File �[35m"/buildbot/buildarea/3.x.ware-debian-x86.nondebug/build/Lib/test/test_urllib2net.py"�[0m, line �[35m28�[0m, in �[35m_retry_thrice�[0m
    raise last_exc
  File �[35m"/buildbot/buildarea/3.x.ware-debian-x86.nondebug/build/Lib/test/test_urllib2net.py"�[0m, line �[35m24�[0m, in �[35m_retry_thrice�[0m
    return func(*args, **kwargs)
  File �[35m"/buildbot/buildarea/3.x.ware-debian-x86.nondebug/build/Lib/urllib/request.py"�[0m, line �[35m489�[0m, in �[35mopen�[0m
    response = self._open(req, data)
  File �[35m"/buildbot/buildarea/3.x.ware-debian-x86.nondebug/build/Lib/urllib/request.py"�[0m, line �[35m506�[0m, in �[35m_open�[0m
    result = self._call_chain(self.handle_open, protocol, protocol +
                              '_open', req)
  File �[35m"/buildbot/buildarea/3.x.ware-debian-x86.nondebug/build/Lib/urllib/request.py"�[0m, line �[35m466�[0m, in �[35m_call_chain�[0m
    result = func(*args)
  File �[35m"/buildbot/buildarea/3.x.ware-debian-x86.nondebug/build/Lib/urllib/request.py"�[0m, line �[35m1646�[0m, in �[35mftp_open�[0m
    raise URLError(f"ftp error: {exp}") from exp
�[1;35murllib.error.URLError�[0m: �[35m<urlopen error ftp error: 425 Security: Bad IP connecting.>�[0m


Traceback (most recent call last):
  File �[35m"/buildbot/buildarea/3.x.ware-debian-x86.nondebug/build/Lib/urllib/request.py"�[0m, line �[35m1633�[0m, in �[35mftp_open�[0m
    fp, retrlen = �[31mfw.retrfile�[0m�[1;31m(file, type)�[0m
                  �[31m~~~~~~~~~~~�[0m�[1;31m^^^^^^^^^^^^�[0m
  File �[35m"/buildbot/buildarea/3.x.ware-debian-x86.nondebug/build/Lib/urllib/request.py"�[0m, line �[35m1903�[0m, in �[35mretrfile�[0m
    conn, retrlen = �[31mself.ftp.ntransfercmd�[0m�[1;31m(cmd)�[0m
                    �[31m~~~~~~~~~~~~~~~~~~~~~�[0m�[1;31m^^^^^�[0m
  File �[35m"/buildbot/buildarea/3.x.ware-debian-x86.nondebug/build/Lib/ftplib.py"�[0m, line �[35m359�[0m, in �[35mntransfercmd�[0m
    resp = self.sendcmd(cmd)
  File �[35m"/buildbot/buildarea/3.x.ware-debian-x86.nondebug/build/Lib/ftplib.py"�[0m, line �[35m281�[0m, in �[35msendcmd�[0m
    return �[31mself.getresp�[0m�[1;31m()�[0m
           �[31m~~~~~~~~~~~~�[0m�[1;31m^^�[0m
  File �[35m"/buildbot/buildarea/3.x.ware-debian-x86.nondebug/build/Lib/ftplib.py"�[0m, line �[35m252�[0m, in �[35mgetresp�[0m
    raise error_temp(resp)
�[1;35mftplib.error_temp�[0m: �[35m425 Security: Bad IP connecting.�[0m