Hi everyone, Is there a gist or similar guide anywhere on the steps required to build NumPy with debugging symbols on the Windows platform using the new Meson build system? It seems a bit difficult because NumPy seems to expect a `conda`-like file structure whereas if you are cloning `cpython` directly it is different. In particular `cpython` puts all the Windows files under the `PC` and `PCBuild` subdirectories. Also meson doesn't seem to have a means to call `python_d.exe` directly which may be causing problems. I've ended up building both `python.exe` and `python_d.exe` but run into some problem finding Python in `meson.build`.
This describes my efforts to date: # Build CPython with Debugging Symbols on Windows ```shell git clone https://github.com/python/cpython.git cd cpython git switch 3.11 PCbuild\get_externals.bat # Build the debug version `python_d.exe` PCbuild\build.bat -e -d # Meson calls `python.exe` and doesn't seem to have an argument to change this. # We could either build it, or create a symlink PCbuild\build.bat # ln -s PCbuild/amd64/python_d.exe PCbuild/amd64/python.exe ``` The built Python will then be located in `<prefix>/cpython/PCBuild/amd64/python_d.exe`. ```batch set PREFIX=C:/Users/Robert/dev/cpython set PATH=%PREFIX%;%PREFIX%/PCBuild/amd64;%PREFIX%/Scripts;%PATH% ``` Next we have to install pip: https://docs.python.org/3/library/ensurepip.html, meson, and cython. ```shell python_d -m ensurepip python_d -mpip install meson meson-python ninja cython ``` NOTE: produces `pip3.exe`, not `pip`. # Build NumPy with debug Python ```shell git clone https://github.com/numpy/numpy.git cd numpy git switch maintenance/1.26.x git submodule update --init ``` https://mesonbuild.com/meson-python/how-to-guides/debug-builds.html Next try and build with meson/ninja: ```shell mkdir build-dbg cd build-dbg meson .. setup --buildtype=debug --includedir=C:/Users/Robert/dev/cpython/PC --libdir=C:/Users/Robert/dev/cpython/PCbuild/amd64 ninja ninja install ``` `meson .. setup <...>` fails and complains that, ''' Run-time dependency python found: NO (tried sysconfig) ..\meson.build:41:12: ERROR: Python dependency not found ''' which corresponds to: ```meson.build py = import('python').find_installation(pure: false) py_dep = py.dependency() ``` I tried also editing `pyproject.toml` to add the section: ```toml [tool.meson-python.args] setup = ['-Dbuildtype=debug', '-Dincludedir=C:/Users/Robert/dev/cpython/PC', '-Dlibdir=C:/Users/Robert/dev/cpython/PCbuild/amd64'] ``` and then build NumPy with pip using the debug python build: ```shell python_d -mpip install . --no-build-isolation -Cbuild-dir=build-dbg ``` But it fails in the same fashion. Searching for issues I find this one but it's likely in this case something related to the debug Python build is the problem. https://github.com/mesonbuild/meson/issues/12547 Meson installed version is 1.4.0. Any advice would be appreciated. I'm happy to write a gist if I can get it working. -- Robert McLeod robbmcl...@gmail.com robert.mcl...@hitachi-hightech.com
_______________________________________________ NumPy-Discussion mailing list -- numpy-discussion@python.org To unsubscribe send an email to numpy-discussion-le...@python.org https://mail.python.org/mailman3/lists/numpy-discussion.python.org/ Member address: arch...@mail-archive.com
