wlav/cppyy-backend

cppyy-backend's Issues

_cppyy_backend.py causes error in python 3.11

In python 3.11 file.open("rU") (_cppyy_backend.py:95) cling/python/cppyy_backend/_cppyy_generator.py:95 causes an error. Removal of the U solves this issue without apparent side effects.

Build from source fails with gcc 13.2.1

I get this error trying to build cppyy-backend 1.14.11 with gcc 13.2.1:

gcc -DNDEBUG -g -fwrapv -O3 -Wall -march=x86-64 -mtune=generic -O3 -pipe -fno-plt -fexceptions -Wp,-D_FORTIFY_SOURCE=2 -Wformat -Werror=format-security -fstack-clash-protection -fcf-protection -g -ffile-prefix-map=/build/python/src=/usr/src/debug/python -flto=auto -ffat-lto-objects -march=x86-64 -mtune=generic -O3 -pipe -fno-plt -fexceptions -Wp,-D_FORTIFY_SOURCE=2 -Wformat -Werror=format-security -fstack-clash-protection -fcf-protection -g -ffile-prefix-map=/build/python/src=/usr/src/debug/python -flto=auto -march=x86-64 -mtune=generic -O3 -pipe -fno-plt -fexceptions -Wp,-D_FORTIFY_SOURCE=2 -Wformat -Werror=format-security -fstack-clash-protection -fcf-protection -g -ffile-prefix-map=/build/python/src=/usr/src/debug/python -flto=auto -march=x86-64 -mtune=generic -O2 -pipe -fno-plt -fexceptions -Wp,-D_FORTIFY_SOURCE=2 -Wformat -Werror=format-security -fstack-clash-protection -fcf-protection -g -ffile-prefix-map=/build/cppyy-backend/src=/usr/src/debug/cppyy-backend -flto=auto -fPIC -I/usr/lib/python3.11/site-packages/cppyy_backend/include -I/usr/include/python3.11 -c src/clingwrapper.cxx -o build/temp.linux-x86_64-cpython-311/src/clingwrapper.o -O2 -pthread -std=c++1z -m64
In file included from /usr/lib/python3.11/site-packages/cppyy_backend/include/Rtypes.h:30,
                 from src/callcontext.h:11,
                 from src/clingwrapper.cxx:11:
/usr/include/string.h:506:15: error: declaration of ‘size_t strlcpy(char*, const char*, size_t) noexcept’ has a different exception specifier
  506 | extern size_t strlcpy (char *__restrict __dest,
      |               ^~~~~~~
In file included from /usr/lib/python3.11/site-packages/cppyy_backend/include/Rtypes.h:26:
/usr/lib/python3.11/site-packages/cppyy_backend/include/strlcpy.h:26:8: note: from previous declaration ‘size_t strlcpy(char*, const char*, size_t)’
   26 | size_t strlcpy(char *dst, const char *src, size_t siz);
      |        ^~~~~~~
/usr/include/string.h:512:15: error: declaration of ‘size_t strlcat(char*, const char*, size_t) noexcept’ has a different exception specifier
  512 | extern size_t strlcat (char *__restrict __dest,
      |               ^~~~~~~
/usr/lib/python3.11/site-packages/cppyy_backend/include/strlcpy.h:27:8: note: from previous declaration ‘size_t strlcat(char*, const char*, size_t)’
   27 | size_t strlcat(char *dst, const char *src, size_t siz);
      |        ^~~~~~~
error: command '/usr/bin/gcc' failed with exit code 1

ERROR Backend subprocess exited when trying to invoke build_wheel

Can't install `cppyy-backend` 1.15.1 from PyPI as `--user` for Python 3.12 on Fedora 39

When running the following command, I get the error below.

$ python3 -m pip install --user --upgrade cppyy-backend

Collecting cppyy-backend
  Using cached cppyy-backend-1.15.1.tar.gz (35 kB)
  Installing build dependencies ... done
  Getting requirements to build wheel ... done
  Preparing metadata (pyproject.toml) ... done
Collecting cppyy-cling==6.30.0 (from cppyy-backend)
  Obtaining dependency information for cppyy-cling==6.30.0 from https://files.pythonhosted.org/packages/bc/de/8e15b32bb34f8726fa2cf9e2efcfb1b64b476aef482ac30d8023146e3caf/cppyy_cling-6.30.0-py2.py3-none-manylinux2014_x86_64.whl.metadata
  Using cached cppyy_cling-6.30.0-py2.py3-none-manylinux2014_x86_64.whl.metadata (2.0 kB)
Using cached cppyy_cling-6.30.0-py2.py3-none-manylinux2014_x86_64.whl (42.2 MB)
Building wheels for collected packages: cppyy-backend
  Building wheel for cppyy-backend (pyproject.toml) ... error
  error: subprocess-exited-with-error
  
  × Building wheel for cppyy-backend (pyproject.toml) did not run successfully.
  │ exit code: 1
  ╰─> [38 lines of output]
      running bdist_wheel
      running build
      running build_ext
      checking for build/temp.linux-x86_64-cpython-312
      creating build/temp.linux-x86_64-cpython-312
      creating build/temp.linux-x86_64-cpython-312/src
      gcc -fno-strict-overflow -Wsign-compare -DDYNAMIC_ANNOTATIONS_ENABLED=1 -DNDEBUG -fcf-protection -fexceptions -fcf-protection -fexceptions -fcf-protection -fexceptions -fPIC -I/tmp/pip-build-env-85x0u7o0/overlay/lib/python3.12/site-packages/cppyy_backend/include -I/usr/include/python3.12 -c src/clingwrapper.cxx -o build/temp.linux-x86_64-cpython-312/src/clingwrapper.o -O2 -pthread -std=c++2a -m64
      now building libcppyy_backend.so
      creating build/lib.linux-x86_64-cpython-312
      creating build/lib.linux-x86_64-cpython-312/cppyy_backend
      creating build/lib.linux-x86_64-cpython-312/cppyy_backend/lib
      g++ -shared build/temp.linux-x86_64-cpython-312/src/clingwrapper.o -L/usr/lib64 -o build/lib.linux-x86_64-cpython-312/cppyy_backend/lib/libcppyy_backend.so -Wl,-Bsymbolic-functions
      installing to build/bdist.linux-x86_64/wheel
      running install
      running install_lib
      creating build/bdist.linux-x86_64
      creating build/bdist.linux-x86_64/wheel
      creating build/bdist.linux-x86_64/wheel/cppyy_backend-1.15.1.data
      creating build/bdist.linux-x86_64/wheel/cppyy_backend-1.15.1.data/platlib
      creating build/bdist.linux-x86_64/wheel/cppyy_backend-1.15.1.data/platlib/cppyy_backend
      creating build/bdist.linux-x86_64/wheel/cppyy_backend-1.15.1.data/platlib/cppyy_backend/lib
      copying build/lib.linux-x86_64-cpython-312/cppyy_backend/lib/libcppyy_backend.so -> build/bdist.linux-x86_64/wheel/cppyy_backend-1.15.1.data/platlib/cppyy_backend/lib
      running install_egg_info
      running egg_info
      writing cppyy_backend.egg-info/PKG-INFO
      writing dependency_links to cppyy_backend.egg-info/dependency_links.txt
      writing requirements to cppyy_backend.egg-info/requires.txt
      writing top-level names to cppyy_backend.egg-info/top_level.txt
      reading manifest file 'cppyy_backend.egg-info/SOURCES.txt'
      reading manifest template 'MANIFEST.in'
      adding license file 'LICENSE.txt'
      writing manifest file 'cppyy_backend.egg-info/SOURCES.txt'
      Copying cppyy_backend.egg-info to build/bdist.linux-x86_64/wheel/cppyy_backend-1.15.1.data/platlib/cppyy_backend-1.15.1-py3.12.egg-info
      running install_scripts
      Now installing cppyy_backend
      Copying installation to: /usr/local/lib/python3.12/site-packages ...
      creating /usr/local/lib/python3.12
      error: could not create '/usr/local/lib/python3.12': Permission denied
      [end of output]
  
  note: This error originates from a subprocess, and is likely not a problem with pip.
  ERROR: Failed building wheel for cppyy-backend
Failed to build cppyy-backend
ERROR: Could not build wheels for cppyy-backend, which is required to install pyproject.toml-based projects
WARNING: There was an error checking the latest version of pip.

The three lines before [end of output] are a bit sus, why is it trying to copy anything into anywhere else other than ~/.local/lib/python3.12/site-packages/ when --user is passed in?

Build from source failure on undeclared identifier _POSIX_SEM_VALUE_MAX

(Reporting here rather than cppyy repo because this issue is specific to the build here.)

I'm attempting to follow the instructions for building from source

Start with the cppyy-cling package (cppyy-backend repo, subdirectory “cling”), which requires source to be pulled in from upstream, and thus takes a few extra steps:

$ git clone https://github.com/wlav/cppyy-backend.git
$ cd cppyy-backend/cling
$ python setup.py egg_info
$ python create_src_directory.py
$ python -m pip install . --upgrade

This fails for me on two different systems and three compilers
Ubuntu (with clang16 or gcc11.4) and Fedora36 with gcc12.2

(Should I retry with other or older compilers?)

The SEM_VALUE_MAX error starts with commit 00c7bed "upgrade Cling from upstream (28.04)"
(before that commit there's another blocking error - a compile fail on a const qualifier).

Ubuntu 22.04.3 GCC11.4

      [ 97%] Generating G__ThreadLegacy.cxx, ../../lib/libThreadLegacy.rootmap
      In file included from input_line_8:16:
      In file included from /Data/home/will/repos/cppyy-backend/cling/builddir/include/ROOT/TReentrantRWLock.hxx:21:
      In file included from /usr/include/c++/11/condition_variable:47:
      In file included from /usr/include/c++/11/stop_token:37:
      In file included from /usr/include/c++/11/semaphore:35:
      /usr/include/c++/11/bits/semaphore_base.h:62:41: error: use of undeclared identifier '_POSIX_SEM_VALUE_MAX'; did you mean '_SC_SEM_VALUE_MAX'?
          static constexpr ptrdiff_t _S_max = _POSIX_SEM_VALUE_MAX;
                                              ^
      /usr/include/x86_64-linux-gnu/bits/confname.h:140:5: note: '_SC_SEM_VALUE_MAX' declared here
          _SC_SEM_VALUE_MAX,
          ^
      Error: /Data/home/will/repos/cppyy-backend/cling/builddir/core/rootcling_stage1/src/rootcling_stage1: compilation failure (/Data/home/will/repos/cppyy-backend/cling/builddir/lib/libThreadLegacyde1d7a8d17_dictUmbrella.h)
      gmake[2]: *** [core/thread/CMakeFiles/G__ThreadLegacy.dir/build.make:106: core/thread/G__ThreadLegacy.cxx] Error 1
      gmake[1]: *** [CMakeFiles/Makefile2:28486: core/thread/CMakeFiles/G__ThreadLegacy.dir/all] Error 2
      gmake[1]: *** Waiting for unfinished jobs....
      [ 97%] Built target Cling
      gmake: *** [Makefile:156: all] Error 2
      error: Failed to build cppyy-cling

Fedora36 GCC12.2

  [ 97%] Generating G__ThreadLegacy.cxx, ../../lib/libThreadLegacy.rootmap
  In file included from input_line_8:16:
  In file included from /home/will/repos/cppyy-backend/cling/builddir/include/ROOT/TReentrantRWLock.hxx:21:
  In file included from /usr/lib/gcc/x86_64-redhat-linux/12/../../../../include/c++/12/condition_variable:46:
  In file included from /usr/lib/gcc/x86_64-redhat-linux/12/../../../../include/c++/12/stop_token:37:
  In file included from /usr/lib/gcc/x86_64-redhat-linux/12/../../../../include/c++/12/semaphore:35:
  /usr/lib/gcc/x86_64-redhat-linux/12/../../../../include/c++/12/bits/semaphore_base.h:59:41: error: use of undeclared identifier '_POSIX_SEM_VALUE_MAX'; did you mean '_SC_SEM_VALUE_MAX'?
      static constexpr ptrdiff_t _S_max = _POSIX_SEM_VALUE_MAX;
                                          ^
  /usr/include/bits/confname.h:140:5: note: '_SC_SEM_VALUE_MAX' declared here
      _SC_SEM_VALUE_MAX,
      ^
...

Fails to build/install via pip on python 3.10 (x86 macOS)

Can't install cppyy via pip on macOS Catalina (intel mac):

$ sw_vers
ProductName:	Mac OS X
ProductVersion:	10.15.7
BuildVersion:	19H2026

$ python3 --version
Python 3.10.8

$ pip3 install cppyy
Collecting cppyy
  Using cached cppyy-2.4.1.tar.gz (24 kB)
  Installing build dependencies ... done
  Getting requirements to build wheel ... done
  Installing backend dependencies ... error
  error: subprocess-exited-with-error

  × pip subprocess to install backend dependencies did not run successfully.
  │ exit code: 1
  ╰─> [91 lines of output]
      Collecting cppyy-cling==6.27.0
        Using cached cppyy_cling-6.27.0-py2.py3-none-macosx_10_12_x86_64.whl (23.1 MB)
      Collecting cppyy-backend==1.14.9
        Using cached cppyy-backend-1.14.9.tar.gz (34 kB)
        Installing build dependencies: started
        Installing build dependencies: finished with status 'done'
        Getting requirements to build wheel: started
        Getting requirements to build wheel: finished with status 'done'
        Preparing metadata (pyproject.toml): started
        Preparing metadata (pyproject.toml): finished with status 'done'
      Building wheels for collected packages: cppyy-backend
        Building wheel for cppyy-backend (pyproject.toml): started
        Building wheel for cppyy-backend (pyproject.toml): finished with status 'error'
        error: subprocess-exited-with-error

        × Building wheel for cppyy-backend (pyproject.toml) did not run successfully.
        │ exit code: 1
        ╰─> [67 lines of output]
            Error in sitecustomize; set PYTHONVERBOSE for traceback:
            AssertionError:
            /usr/local/lib/python3.10/site-packages/setuptools/config/setupcfg.py:508: SetuptoolsDeprecationWarning: The license_file parameter is deprecated, use license_files instead.
              warnings.warn(msg, warning_class)
            running bdist_wheel
            running build
            running build_ext
            Error in sitecustomize; set PYTHONVERBOSE for traceback:
            AssertionError:
            /usr/local/Cellar/[email protected]/3.10.8/bin/python3.10: Error while finding module specification for 'cppyy_backend._cling_config' (ModuleNotFoundError: No module named 'cppyy_backend')
            Traceback (most recent call last):
              File "/usr/local/lib/python3.10/site-packages/pip/_vendor/pep517/in_process/_in_process.py", line 351, in <module>
                main()
              File "/usr/local/lib/python3.10/site-packages/pip/_vendor/pep517/in_process/_in_process.py", line 333, in main
                json_out['return_val'] = hook(**hook_input['kwargs'])
              File "/usr/local/lib/python3.10/site-packages/pip/_vendor/pep517/in_process/_in_process.py", line 249, in build_wheel
                return _build_backend().build_wheel(wheel_directory, config_settings,
              File "/usr/local/lib/python3.10/site-packages/setuptools/build_meta.py", line 412, in build_wheel
                return self._build_with_temp_dir(['bdist_wheel'], '.whl',
              File "/usr/local/lib/python3.10/site-packages/setuptools/build_meta.py", line 397, in _build_with_temp_dir
                self.run_setup()
              File "/usr/local/lib/python3.10/site-packages/setuptools/build_meta.py", line 482, in run_setup
                super(_BuildMetaLegacyBackend,
              File "/usr/local/lib/python3.10/site-packages/setuptools/build_meta.py", line 335, in run_setup
                exec(code, locals())
              File "<string>", line 182, in <module>
              File "/usr/local/lib/python3.10/site-packages/setuptools/__init__.py", line 87, in setup
                return distutils.core.setup(**attrs)
              File "/usr/local/lib/python3.10/site-packages/setuptools/_distutils/core.py", line 185, in setup
                return run_commands(dist)
              File "/usr/local/lib/python3.10/site-packages/setuptools/_distutils/core.py", line 201, in run_commands
                dist.run_commands()
              File "/usr/local/lib/python3.10/site-packages/setuptools/_distutils/dist.py", line 968, in run_commands
                self.run_command(cmd)
              File "/usr/local/lib/python3.10/site-packages/setuptools/dist.py", line 1217, in run_command
                super().run_command(command)
              File "/usr/local/lib/python3.10/site-packages/setuptools/_distutils/dist.py", line 987, in run_command
                cmd_obj.run()
              File "/usr/local/lib/python3.10/site-packages/wheel/bdist_wheel.py", line 299, in run
                self.run_command('build')
              File "/usr/local/lib/python3.10/site-packages/setuptools/_distutils/cmd.py", line 319, in run_command
                self.distribution.run_command(command)
              File "/usr/local/lib/python3.10/site-packages/setuptools/dist.py", line 1217, in run_command
                super().run_command(command)
              File "/usr/local/lib/python3.10/site-packages/setuptools/_distutils/dist.py", line 987, in run_command
                cmd_obj.run()
              File "/usr/local/lib/python3.10/site-packages/setuptools/_distutils/command/build.py", line 132, in run
                self.run_command(cmd_name)
              File "/usr/local/lib/python3.10/site-packages/setuptools/_distutils/cmd.py", line 319, in run_command
                self.distribution.run_command(command)
              File "/usr/local/lib/python3.10/site-packages/setuptools/dist.py", line 1217, in run_command
                super().run_command(command)
              File "/usr/local/lib/python3.10/site-packages/setuptools/_distutils/dist.py", line 987, in run_command
                cmd_obj.run()
              File "/usr/local/lib/python3.10/site-packages/setuptools/_distutils/command/build_ext.py", line 346, in run
                self.build_extensions()
              File "/usr/local/lib/python3.10/site-packages/setuptools/_distutils/command/build_ext.py", line 466, in build_extensions
                self._build_extensions_serial()
              File "/usr/local/lib/python3.10/site-packages/setuptools/_distutils/command/build_ext.py", line 492, in _build_extensions_serial
                self.build_extension(ext)
              File "<string>", line 73, in build_extension
              File "<string>", line 58, in get_include_path
              File "/usr/local/Cellar/[email protected]/3.10.8/Frameworks/Python.framework/Versions/3.10/lib/python3.10/subprocess.py", line 421, in check_output
                return run(*popenargs, stdout=PIPE, timeout=timeout, check=True,
              File "/usr/local/Cellar/[email protected]/3.10.8/Frameworks/Python.framework/Versions/3.10/lib/python3.10/subprocess.py", line 526, in run
                raise CalledProcessError(retcode, process.args,
            subprocess.CalledProcessError: Command '['/usr/local/Cellar/[email protected]/3.10.8/bin/python3.10', '-m', 'cppyy_backend._cling_config', '--incdir']' returned non-zero exit status 1.
            [end of output]

        note: This error originates from a subprocess, and is likely not a problem with pip.
        ERROR: Failed building wheel for cppyy-backend
      Failed to build cppyy-backend
      ERROR: Could not build wheels for cppyy-backend, which is required to install pyproject.toml-based projects
      [end of output]

  note: This error originates from a subprocess, and is likely not a problem with pip.
error: subprocess-exited-with-error

× pip subprocess to install backend dependencies did not run successfully.
│ exit code: 1
╰─> See above for output.

note: This error originates from a subprocess, and is likely not a problem with pip.

`You are probably missing the definition of std::allocator<char>::deallocate(char*, unsigned long)`

Unexpected behavior when building cppyy-backend master-branch from source using g++ >= 10.

1. Have to pass -D_POSIX_SEM_VALUE_MAX=32767 flag manually or the following error occur:

In file included from .<...>/cling/builddir/include/ROOT/TReentrantRWLock.hxx:21:
In file included from /usr/include/c++/12/condition_variable:46:
In file included from /usr/include/c++/12/stop_token:37:
In file included from /usr/include/c++/12/semaphore:35:
/usr/include/c++/12/bits/semaphore_base.h:59:41: error: use of undeclared identifier '_POSIX_SEM_VALUE_MAX'; did you mean '_SC_SEM_VALUE_MAX'?
static constexpr ptrdiff_t _S_max = _POSIX_SEM_VALUE_MAX;

2. After that I manage to build and install it in python. However when I run python code a few link error occur, the following one is one of them

import cppyy
cppyy.cppdef("""
#include <string>
void f() { std::string mPath; }
""")
from cppyy.gbl import f
f()

and error message is

IncrementalExecutor::executeFunction: symbol '_ZNSaIcE10deallocateEPcm' unresolved while linking symbol '__cf_4'!
You are probably missing the definition of std::allocator::deallocate(char*, unsigned long)
Maybe you need to load the corresponding shared library?

Building using g++-9 works great and both errors disappear. I assume it's more stable however some of the c++ codes that I am planning to expose to python only compile on newer compilers.
What might cause these link errors?
Any help is appreciated~

Different exception specifier when build cppyy

When I run python -m build in cppyy project root directory. It fails when compiling cppyy-backend. Here is the part of output:

  × Building wheel for cppyy-backend (pyproject.toml) did not run successfully.                                                                                                                
  │ exit code: 1                                                                                                                                                                               
  ╰─> [24 lines of output]                                                                                                                                                                     
      running bdist_wheel                                                                                                                                                                      
      running build                                                                                                                                                                            
      running build_ext                                                                                                                                                                        
      checking for build/temp.linux-x86_64-cpython-311                                                                                                                                         
      creating build/temp.linux-x86_64-cpython-311                                                                                                                                             
      creating build/temp.linux-x86_64-cpython-311/src                                                                                                                                         
      gcc -DNDEBUG -g -fwrapv -O3 -Wall -march=x86-64 -mtune=generic -O3 -pipe -fno-plt -fexceptions -Wp,-D_FORTIFY_SOURCE=2 -Wformat -Werror=format-security -fstack-clash-protection -fcf-pro
tection -g -ffile-prefix-map=/build/python/src=/usr/src/debug/python -flto=auto -ffat-lto-objects -march=x86-64 -mtune=generic -O3 -pipe -fno-plt -fexceptions -Wp,-D_FORTIFY_SOURCE=2 -Wformat
 -Werror=format-security -fstack-clash-protection -fcf-protection -g -ffile-prefix-map=/build/python/src=/usr/src/debug/python -flto=auto -march=x86-64 -mtune=generic -O3 -pipe -fno-plt -fexc
eptions -Wp,-D_FORTIFY_SOURCE=2 -Wformat -Werror=format-security -fstack-clash-protection -fcf-protection -g -ffile-prefix-map=/build/python/src=/usr/src/debug/python -flto=auto -fPIC -I/tmp/
pip-build-env-bkpyl8ui/overlay/lib/python3.11/site-packages/cppyy_backend/include -I/tmp/build-env-ov_r3zgr/include -I/usr/include/python3.11 -c src/clingwrapper.cxx -o build/temp.linux-x86_6
4-cpython-311/src/clingwrapper.o -O2 -pthread -std=c++1z -m64                                                                                                                                  
      In file included from /tmp/pip-build-env-bkpyl8ui/overlay/lib/python3.11/site-packages/cppyy_backend/include/Rtypes.h:30,                                                                
                       from src/callcontext.h:11,                                                                                                                                              
                       from src/clingwrapper.cxx:11:                                                                                                                                           
      /usr/include/string.h:506:15: error: declaration of ‘size_t strlcpy(char*, const char*, size_t) noexcept’ has a different exception specifier                                            
        506 | extern size_t strlcpy (char *__restrict __dest,                                                                                                                                  
            |               ^~~~~~~                                                                                                                                                            
      In file included from /tmp/pip-build-env-bkpyl8ui/overlay/lib/python3.11/site-packages/cppyy_backend/include/Rtypes.h:26:                                                                
      /tmp/pip-build-env-bkpyl8ui/overlay/lib/python3.11/site-packages/cppyy_backend/include/strlcpy.h:26:8: note: from previous declaration ‘size_t strlcpy(char*, const char*, size_t)’      
         26 | size_t strlcpy(char *dst, const char *src, size_t siz);                                                                                                                          
            |        ^~~~~~~                                                                                                                                                                   
      /usr/include/string.h:512:15: error: declaration of ‘size_t strlcat(char*, const char*, size_t) noexcept’ has a different exception specifier                                            
        512 | extern size_t strlcat (char *__restrict __dest,                                                                                                                                  
            |               ^~~~~~~                                                                                                                                                            
      /tmp/pip-build-env-bkpyl8ui/overlay/lib/python3.11/site-packages/cppyy_backend/include/strlcpy.h:27:8: note: from previous declaration ‘size_t strlcat(char*, const char*, size_t)’      
         27 | size_t strlcat(char *dst, const char *src, size_t siz);                                                                                                                          
            |        ^~~~~~~
      error: command '/usr/bin/gcc' failed with exit code 1
      [end of output]
   
  note: This error originates from a subprocess, and is likely not a problem with pip.
  ERROR: Failed building wheel for cppyy-backend
Failed to build cppyy-backend
ERROR: Could not build wheels for cppyy-backend, which is required to install pyproject.toml-based projects

My gcc version is 13.2.1, my clang version(I dont know whether this project uses system llvm) is 15.0.7

typedef cannot be referenced with a enum specifier in function call

While running regression tests on typedefed enums on cppyy v2.4.2 built from source, I was running into the following error when the line

import cppyy
        cppyy.cppdef("""\
        namespace TypedefedEnum {
        typedef enum {
            MONDAY    = 0,
            TUESDAY   = 1,
            WEDNESDAY = 2
        } Day;

        int func(const Day day) { return (int)day; }
        }""")

        ns = cppyy.gbl.TypedefedEnum

        assert ns.func(ns.WEDNESDAY) == 2

resulted in the error:

E   cppyy.gbl.std.runtime_error: int TypedefedEnum::func(const TypedefedEnum::Day day) =>
E       runtime_error: failed to resolve function

/home/maximus/cppyy/cppyy/test/test_regression.py:1234: runtime_error
----------------------------------------------- Captured stderr call ------------------------------------------------
input_line_275:6:60: error: typedef 'Day' cannot be referenced with a enum specifier
      new (ret) (int) (((int (&)(const enum TypedefedEnum::Day))TypedefedEnum::func)(*(const enum TypedefedEnum::Day*)args[0]));
                                                           ^
input_line_274:6:11: note: declared here
        } Day;
          ^

cppyy_get_all_cpp_names doesn't return all the names it should

Hi!

For this code:

namespace GG {
      struct S { 
            int a; 
            int c; 
            S(int a, int c): _a{a}, _c{c} { } 
            S(): _a{0}, _c{0} { } 
      }; 
}

Calling cppyy_get_all_cpp_names(handle_of_S, &count) returns just ["S", "~S“]. Data members are not included.
Also, it would be great to extend cppyy_get_all_cpp_names to work with any namespace, i.e. to return the names of classes, structs and all the other entities that are declared inside a namespace.