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Merged
merged 14 commits into from
Dec 30, 2020

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pxinwr
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@pxinwr pxinwr commented Dec 22, 2020

Test modules under Lib directory are used for internal CPython regression testing. Shipping them in formal release is not necessary. So to reduce package size and build and installation time, we should provide an option in configure to disable them.

https://bugs.python.org/issue27640

@pxinwr pxinwr changed the title bpo-41443: Add --enable-test-modules option for configure Dec 22, 2020
@doko42 doko42 self-requested a review December 24, 2020 10:18
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doko42 commented Dec 24, 2020

Parts of the testsuite are used by third party packages. Even if you don't want to install test modules, you should install those.
This is what I identify as part of the test framework:

           $(scriptdir)/test/{libregrtest,support} \
            $(scriptdir)/test/{ann_module,ann_module2,ann_module3}.py \
            $(scriptdir)/test/{regrtest,test_support,__init__,__main__}.py

However that list might be incomplete.

For packaging purposes I think it's better to remove those files which you don't want to ship after the installation.

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Parts of the testsuite are used by third party packages. Even if you don't want to install test modules, you should install those.

This is what I identify as part of the test framework:

test/{libregrtest,support}
test/{ann_module,ann_module2,ann_module3}.py
test/{regrtest,test_support,init,main}.py

However that list might be incomplete.

For packaging purposes I think it's better to remove those files which you don't want to ship after the installation.

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pxinwr commented Dec 25, 2020

@doko42 Thanks for your review. After I installed the Python3.8 distribution for Ubuntu, it indeed has the regression test framework shipped but with all other test stuffs removed. So always shipping test framework skeleton regardless of the option value of --enable-test-modules could be a good idea. Could we do the same thing like Ubuntu does as shown below?

Under the directory /usr/lib/python3.8/test, Ubuntu ships:
__init__.py libregrtest __main__.py regrtest.py support test_support.py

In addition, Ubuntu doesn't ship test/{ann_module,ann_module2,ann_module3}.py. How are these used by 3rd-party?

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https://bugs.python.org/issue31904 is a meta-issue about VxWorks, but I would prefer to have a dedicated issue for this change.

The good news is that it already exists: https://bugs.python.org/issue27640 Please reuse this BPO.

@@ -0,0 +1 @@
Add --enable-test-modules option for configure.
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Please document it also in https://docs.python.org/dev/whatsnew/3.10.html#build-changes (Doc/whatsnew/3.10.rst).

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Done.

configure.ac Outdated
@@ -5833,6 +5833,18 @@ else
fi],
[AC_MSG_RESULT(no)])

# check whether to disable test modules
AC_MSG_CHECKING(for --enable-test-modules)
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Since the default is to enable tests, I would prefer an option to disable tests. https://bugs.python.org/issue27640 proposed to add --disable-test-suite to configure.

Can you please elaborate the effect of the option? I understand that if it's used, it disables the compilation of test extension modules, and prevent to install tests in "make install". Also elaborate it in the NEWS and What's New entries.

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See below copied from configure help. When we define an option enable-test-modules, the counterpart disable-test-modules will be also defined automatically. That is, disable-test-modules is already defined. The existing option --enable-ipv6 is an example that is default as yes.

Optional Features:
  --disable-option-checking  ignore unrecognized --enable/--with options
  --disable-FEATURE       do not include FEATURE (same as --enable-FEATURE=no)
  --enable-FEATURE[=ARG]  include FEATURE [ARG=yes]
  --enable-universalsdk[=SDKDIR]
                          create a universal binary build. SDKDIR specifies
                          which macOS SDK should be used to perform the build,
                          see Mac/README.rst. (default is no)
  --enable-framework[=INSTALLDIR]
                          create a Python.framework rather than a traditional
                          Unix install. optional INSTALLDIR specifies the
                          installation path. see Mac/README.rst (default is
                          no)
  --enable-shared         enable building a shared Python library (default is
                          no)
  --enable-profiling      enable C-level code profiling with gprof (default is
                          no)
  --enable-optimizations  enable expensive, stable optimizations (PGO, etc.)
                          (default is no)
  --enable-loadable-sqlite-extensions
                          support loadable extensions in _sqlite module, see
                          Doc/library/sqlite3.rst (default is no)
  --enable-ipv6           enable ipv6 (with ipv4) support, see
                          Doc/library/socket.rst (default is yes if supported)
  --enable-big-digits[=15|30]
                          use big digits (30 or 15 bits) for Python longs
                          (default is system-dependent)]
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"When we define an option enable-test-modules, the counterpart disable-test-modules will be also defined automatically."

Ah ok. But you should document that the change adds the --disable-test-modules option.

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You forgot run "autoconf": configure it outdated, it contains the old documentation.

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"Ah ok. But you should document that the change adds the --disable-test-modules option."
Done.
"You forgot run "autoconf": configure it outdated, it contains the old documentation."
Actually I did run it.

Makefile.pre.in Outdated
@@ -1365,8 +1365,29 @@ maninstall: altmaninstall

# Install the library
XMLLIBSUBDIRS= xml xml/dom xml/etree xml/parsers xml/sax
LIBSUBDIRS= tkinter tkinter/test tkinter/test/test_tkinter \
tkinter/test/test_ttk site-packages test \
LIBSUBDIRS= tkinter \
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Since you rewrite LIBSUBDIRS and TESTSUBDIRS, can you please sort these lists? You may even put one item per line, but you can keep groups of subdirectories of the same directory (like "venv venv/scripts venv/scripts/common venv/scripts/posix").

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Done.

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A Python core developer has requested some changes be made to your pull request before we can consider merging it. If you could please address their requests along with any other requests in other reviews from core developers that would be appreciated.

Once you have made the requested changes, please leave a comment on this pull request containing the phrase I have made the requested changes; please review again. I will then notify any core developers who have left a review that you're ready for them to take another look at this pull request.

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The buildroot project has the following patch on Python which adds --disable-test-modules configure option:
https://git.buildroot.org/buildroot/tree/package/python3/0013-Add-an-option-to-disable-installation-of-test-module.patch

Co-authored-by: Victor Stinner <vstinner@python.org>
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doko42 commented Dec 28, 2020

https://bugs.debian.org/944303 showed that python-typing-extensions uses the ann* modules. Now that's integrated in upstream cpython, but still shipped on PyPi: https://pypi.org/project/typing-extensions/. So yes, I think these could be removed as well.

Please note that Debian/Ubuntu packaging doesn't remove any of these files, but just ships them in a separate binary package, e.g. libpython3.8-testsuite.

@pxinwr pxinwr changed the title bpo-31904: Add --enable-test-modules option for configure Dec 28, 2020
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pxinwr commented Dec 29, 2020

@vstinner Regarding the regression test framework(see below for files and directories) what is your opinion? Keeping it or removing it entirely when disabling test suites? Looks buildroot removes it while Ubuntu keeps it. If we decide keeping it, some of the test extension modules(_testcapi and _testinternalcapi) have to be kept as well because test.support needs to import them.

__init__.py libregrtest __main__.py regrtest.py support test_support.py

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pxinwr commented Dec 29, 2020

I have made the requested changes; please review again

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Thanks for making the requested changes!

@vstinner: please review the changes made to this pull request.

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The Fedora package put the following files/directories in the python3-test binary RPM:

%if %{without flatpackage}
%files -n %{pkgname}-test
%endif

%{pylibdir}/ctypes/test
%{pylibdir}/distutils/tests
%{pylibdir}/sqlite3/test
%{pylibdir}/test
%{dynload_dir}/_ctypes_test.%{SOABI_optimized}.so
%{dynload_dir}/_testbuffer.%{SOABI_optimized}.so
%{dynload_dir}/_testcapi.%{SOABI_optimized}.so
%{dynload_dir}/_testimportmultiple.%{SOABI_optimized}.so
%{dynload_dir}/_testinternalcapi.%{SOABI_optimized}.so
%{dynload_dir}/_testmultiphase.%{SOABI_optimized}.so
%{dynload_dir}/_xxtestfuzz.%{SOABI_optimized}.so
%{pylibdir}/lib2to3/tests
%{pylibdir}/tkinter/test
%{pylibdir}/unittest/test

https://src.fedoraproject.org/rpms/python3.10/blob/master/f/python3.10.spec#_1429

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With the PR and --disable-test-modules, the following directories (and sub-directories) are no longer installed:

ctypes/test/
distutils/tests/
idlelib/idle_test/
lib2to3/tests/
sqlite3/test/
test/
tkinter/test/
unittest/test/

With the PR and --disable-test-modules, the following files of lib-dynload/ are no longer installed:

_ctypes_test.cpython-310-x86_64-linux-gnu.so
_testbuffer.cpython-310-x86_64-linux-gnu.so
_testcapi.cpython-310-x86_64-linux-gnu.so
_testimportmultiple.cpython-310-x86_64-linux-gnu.so
_testinternalcapi.cpython-310-x86_64-linux-gnu.so
_testmultiphase.cpython-310-x86_64-linux-gnu.so
_xxtestfuzz.cpython-310-x86_64-linux-gnu.so

Install in /opt/py310 without tests:

./configure --disable-test-modules --prefix /opt/py310test CFLAGS="-O0" --with-platlibdir=lib64 && make && make install 

Install in /opt/py310test with tests:

./configure --prefix /opt/py310test CFLAGS="-O0" --with-platlibdir=lib64 && make && make install 

Remove .pyc files:

find /opt/py310 -name "*.pyc" -delete
find /opt/py310test -name "*.pyc" -delete

Compare the content of the two directories:

(cd /opt/py310test/lib64/python3.10/; find)|sort > A
(cd /opt/py310/lib64/python3.10/; find)|sort > B
diff -u B A > pr23886_files.diff

I atttached the full pr23886_files.diff to https://bugs.python.org/issue27640

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Good: this PR does not remove any file/directory by default (compared to the master branch). It works as expected.

$ git switch master
$ ./configure --prefix /opt/py310master CFLAGS="-O0" --with-platlibdir=lib64 && make && make install 
$ find /opt/py310master -name "*.pyc" -delete

$ git switch pr/23886
$ ./configure --prefix /opt/py310pr CFLAGS="-O0" --with-platlibdir=lib64 && make && make install 
$ find /opt/py310pr -name "*.pyc" -delete

$ (cd /opt/py310master/; find)|sort > A; (cd /opt/py310pr/; find)|sort > B
$ diff -u A B

# diff output is empty: that's good! there is no change
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On Fedora, the python3 package does not contain the test module. You must install python3-test.

The test module should not be used by third party projects. The documentation starts with the note:

The test package is meant for internal use by Python only. It is documented for the benefit of the core developers of Python. Any use of this package outside of Python’s standard library is discouraged as code mentioned here can change or be removed without notice between releases of Python.

https://docs.python.org/dev/library/test.html

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@doko42:

https://bugs.debian.org/944303 showed that python-typing-extensions uses the ann* modules. Now that's integrated in upstream cpython, but still shipped on PyPi: https://pypi.org/project/typing-extensions/. So yes, I think these could be removed as well.

Please note that Debian/Ubuntu packaging doesn't remove any of these files, but just ships them in a separate binary package, e.g. libpython3.8-testsuite.

On Debian, Ubuntu or Fedora, it's just a matter of putting the right dependency on the libpython3.8-testsuite (python3-test on Fedora) package.

@pxinwr:

@vstinner Regarding the regression test framework(see below for files and directories) what is your opinion? Keeping it or removing it entirely when disabling test suites? Looks buildroot removes it while Ubuntu keeps it.

This PR is not intended for general Linux distributions like Debian or Fedora, but specialized embedded devices. Xavier created https://bugs.python.org/issue27640 when he worked on putting Python on Android. The buildroot is also intended to be used to produce an image for an embedded devices. The use case is to ship an image for end users who will not run any test but use a "finished" product. For developers, well, just don't use --disable-test-modules.

@@ -0,0 +1,3 @@
Added ``--enable-test-modules`` option to the ``configure`` script. If this
option is set to no, ``make install`` will not install test suites. Also
setup.py will not build test extension modules.
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Would you mind to add the credit?

Patch by Xavier de Gaye, Thomas Petazzoni and Peixing Xin.
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Added.

@vstinner vstinner changed the title bpo-27640: Add --enable-test-modules option for configure Dec 30, 2020
@vstinner vstinner changed the title bpo-27640: Add --disable-test-modules option for configure Dec 30, 2020
pxinwr and others added 5 commits December 30, 2020 14:15
Co-authored-by: Victor Stinner <vstinner@python.org>
Co-Authored-By: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Co-Authored-By: Xavier de Gaye <xdegaye@gmail.com>

Co-authored-by: Victor Stinner <vstinner@python.org>
Co-authored-by: Victor Stinner <vstinner@python.org>
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I tested again the PR, at commit 9e5dada. I rebased locally the PR on master. The PR works as expected!

Install Python 3 times:

  • master
  • PR with tests
  • PR without tests
# master with tests
$ git switch master
$ git clean -fdx
$ ./configure --prefix /opt/py310_master CFLAGS="-O0"
$ make && make install

# PR with tests
$ git switch pr/23886
$ git clean -fdx
$ ./configure --disable-test-modules --prefix /opt/py310_notest CFLAGS="-O0"
$ make && make install

# PR without tests
$ git switch pr/23886
$ git clean -fdx
$ ./configure --prefix /opt/py310_pr CFLAGS="-O0"
$ make && make install

First test: ensure that the PR still copy exactly the same files: good, there is zero difference!

$ (cd /opt/py310_master; find|sort) > files-master
$ (cd /opt/py310_pr; find|sort) > files-pr-with-tests
$ diff -u files-master files-pr-with-tests 

# diff output is empty: good! there is no change

Second test: check that --disable-test-modules don't install tests. Good! Test C extension are not built nor installed and test subdirectories are not installed, as expected.

$ (cd /opt/py310_master; find|sort) > files-master
$ (cd /opt/py310_notest; find|sort) > files-pr-without-tests

$ (cd /opt/py310_master; find -type d|sort) > dirs-master
$ (cd /opt/py310_notest; find -type d|sort) > dirs-pr-without-tests

# Removed files
$ diff -u files-master files-pr-without-tests |grep '^-.*so$'
-./lib/python3.10/lib-dynload/_ctypes_test.cpython-310-x86_64-linux-gnu.so
-./lib/python3.10/lib-dynload/_testbuffer.cpython-310-x86_64-linux-gnu.so
-./lib/python3.10/lib-dynload/_testcapi.cpython-310-x86_64-linux-gnu.so
-./lib/python3.10/lib-dynload/_testimportmultiple.cpython-310-x86_64-linux-gnu.so
-./lib/python3.10/lib-dynload/_testinternalcapi.cpython-310-x86_64-linux-gnu.so
-./lib/python3.10/lib-dynload/_testmultiphase.cpython-310-x86_64-linux-gnu.so
-./lib/python3.10/lib-dynload/_xxtestfuzz.cpython-310-x86_64-linux-gnu.so

# Removed directories
$ diff -u dirs-master dirs-pr-without-tests |grep ^-|grep -v __pycache__
-./lib/python3.10/ctypes/test
-./lib/python3.10/distutils/tests
-./lib/python3.10/idlelib/idle_test
-./lib/python3.10/lib2to3/tests
-./lib/python3.10/lib2to3/tests/data
-./lib/python3.10/lib2to3/tests/data/fixers
-./lib/python3.10/lib2to3/tests/data/fixers/myfixes
-./lib/python3.10/sqlite3/test
-./lib/python3.10/test
-./lib/python3.10/test/audiodata
-./lib/python3.10/test/capath
-./lib/python3.10/test/cjkencodings
-./lib/python3.10/test/data
-./lib/python3.10/test/decimaltestdata
-./lib/python3.10/test/dtracedata
-./lib/python3.10/test/encoded_modules
-./lib/python3.10/test/imghdrdata
-./lib/python3.10/test/libregrtest
-./lib/python3.10/test/sndhdrdata
-./lib/python3.10/test/subprocessdata
-./lib/python3.10/test/support
-./lib/python3.10/test/test_asyncio
-./lib/python3.10/test/test_email
-./lib/python3.10/test/test_email/data
-./lib/python3.10/test/test_import
-./lib/python3.10/test/test_import/data
-./lib/python3.10/test/test_import/data/circular_imports
-./lib/python3.10/test/test_import/data/circular_imports/subpkg
-./lib/python3.10/test/test_import/data/package
-./lib/python3.10/test/test_import/data/package2
-./lib/python3.10/test/test_import/data/unwritable
-./lib/python3.10/test/test_importlib
-./lib/python3.10/test/test_importlib/builtin
-./lib/python3.10/test/test_importlib/data
-./lib/python3.10/test/test_importlib/data01
-./lib/python3.10/test/test_importlib/data01/subdirectory
-./lib/python3.10/test/test_importlib/data02
-./lib/python3.10/test/test_importlib/data02/one
-./lib/python3.10/test/test_importlib/data02/two
-./lib/python3.10/test/test_importlib/data03
-./lib/python3.10/test/test_importlib/data03/namespace
-./lib/python3.10/test/test_importlib/data03/namespace/portion1
-./lib/python3.10/test/test_importlib/data03/namespace/portion2
-./lib/python3.10/test/test_importlib/extension
-./lib/python3.10/test/test_importlib/frozen
-./lib/python3.10/test/test_importlib/import_
-./lib/python3.10/test/test_importlib/namespace_pkgs
-./lib/python3.10/test/test_importlib/namespace_pkgs/both_portions
-./lib/python3.10/test/test_importlib/namespace_pkgs/both_portions/foo
-./lib/python3.10/test/test_importlib/namespace_pkgs/module_and_namespace_package
-./lib/python3.10/test/test_importlib/namespace_pkgs/module_and_namespace_package/a_test
-./lib/python3.10/test/test_importlib/namespace_pkgs/not_a_namespace_pkg
-./lib/python3.10/test/test_importlib/namespace_pkgs/not_a_namespace_pkg/foo
-./lib/python3.10/test/test_importlib/namespace_pkgs/portion1
-./lib/python3.10/test/test_importlib/namespace_pkgs/portion1/foo
-./lib/python3.10/test/test_importlib/namespace_pkgs/portion2
-./lib/python3.10/test/test_importlib/namespace_pkgs/portion2/foo
-./lib/python3.10/test/test_importlib/namespace_pkgs/project1
-./lib/python3.10/test/test_importlib/namespace_pkgs/project1/parent
-./lib/python3.10/test/test_importlib/namespace_pkgs/project1/parent/child
-./lib/python3.10/test/test_importlib/namespace_pkgs/project2
-./lib/python3.10/test/test_importlib/namespace_pkgs/project2/parent
-./lib/python3.10/test/test_importlib/namespace_pkgs/project2/parent/child
-./lib/python3.10/test/test_importlib/namespace_pkgs/project3
-./lib/python3.10/test/test_importlib/namespace_pkgs/project3/parent
-./lib/python3.10/test/test_importlib/namespace_pkgs/project3/parent/child
-./lib/python3.10/test/test_importlib/source
-./lib/python3.10/test/test_importlib/zipdata01
-./lib/python3.10/test/test_importlib/zipdata02
-./lib/python3.10/test/test_json
-./lib/python3.10/test/test_peg_generator
-./lib/python3.10/test/test_tools
-./lib/python3.10/test/test_warnings
-./lib/python3.10/test/test_warnings/data
-./lib/python3.10/test/test_zoneinfo
-./lib/python3.10/test/test_zoneinfo/data
-./lib/python3.10/test/tracedmodules
-./lib/python3.10/test/xmltestdata
-./lib/python3.10/test/xmltestdata/c14n-20
-./lib/python3.10/test/ziptestdata
-./lib/python3.10/tkinter/test
-./lib/python3.10/tkinter/test/test_tkinter
-./lib/python3.10/tkinter/test/test_ttk
-./lib/python3.10/unittest/test
-./lib/python3.10/unittest/test/testmock
@vstinner vstinner merged commit 277ce30 into python:master Dec 30, 2020
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Thank you @pxinwr for your multiple updates, the final PR is much better. The change is now properly documented (NEWS entry, What's New in Python 3.10 entry), the option is properly documented directly in configure (it says exactly what it does), it's better than Xavier's initial patch and the Thoma's buildbroot patch since it also doesn't build test extensions. And overall, I think that it's a reasonable build option, it makes sense to not install tests on a small "embedded device".

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⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot s390x Fedora 3.x has failed when building commit 277ce30.

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/all/#builders/223/builds/528) and take a look at the build logs.
  4. Check if the failure is related to this commit (277ce30) 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/all/#builders/223/builds/528

Failed tests:

  • test_asyncio

Failed subtests:

  • test_start_new_session - test.test_asyncio.test_subprocess.SubprocessMultiLoopWatcherTests

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

==

Click to see traceback logs
Traceback (most recent call last):
  File "/home/dje/cpython-buildarea/3.x.edelsohn-fedora-z/build/Lib/asyncio/unix_events.py", line 1302, in _do_waitpid
    loop, callback, args = self._callbacks.pop(pid)
KeyError: 3703654


Traceback (most recent call last):
  File "/home/dje/cpython-buildarea/3.x.edelsohn-fedora-z/build/Lib/test/test_asyncio/test_subprocess.py", line 169, in test_start_new_session
    self.assertEqual(exitcode, 8)
AssertionError: 255 != 8
adorilson pushed a commit to adorilson/cpython that referenced this pull request Mar 13, 2021
Added --disable-test-modules option to the configure script:
don't build nor install test modules.

Patch by Xavier de Gaye, Thomas Petazzoni and Peixing Xin.

Co-Authored-By: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Co-Authored-By: Xavier de Gaye <xdegaye@gmail.com>
@pxinwr pxinwr deleted the fix-issue-31904-distest branch May 7, 2021 07:42
@kuhlenough kuhlenough mannequin mentioned this pull request Jan 12, 2024
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