meson: Fix Python library searching on Windows

Neither LIBDIR nor LIBPL are set with the native windows Python
(unlike MSYS2), so we need to use `prefix` which takes us to the
rootdir of the Python installation.

The name is also different: it's python312.dll, not python3.12.dll.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/6734>
This commit is contained in:
Nirbheek Chauhan 2024-04-26 03:37:47 +05:30 committed by GStreamer Marge Bot
parent 753aeccde7
commit d7eeb62f38

View file

@ -45,39 +45,53 @@ pylib_loc = get_option('libpython-dir')
fsmod = import('fs')
pylib_prefix = 'lib'
pylib_suffix = 'so'
pylib_ver = python_dep.version()
pylib_locs = []
if host_system == 'windows'
if cc.get_argument_syntax() == 'msvc'
pylib_prefix = ''
endif
pylib_suffix = 'dll'
pylib_ver = pylib_ver.replace('.', '')
elif host_system == 'darwin'
pylib_suffix = 'dylib'
endif
pylib_fnames = []
# Library name with soversion, non-devel package
if python.has_variable('INSTSONAME')
# For example, libpython3.12.so.1.0 (Linux), libpython3.11.dll.a (MSYS2), etc.
pylib_fnames += python.get_variable('INSTSONAME')
endif
# Library name without soversion, devel package, framework, etc.
if python.has_variable('LDLIBRARY')
# For example, libpython3.12.so (Linux), libpython3.11.dll.a (MSYS2), etc.
pylib_fnames += python.get_variable('LDLIBRARY')
endif
# Manually construct name as a fallback
pylib_fnames += [
pylib_prefix + 'python' + python_dep.version() + python_abi_flags + '.' + pylib_suffix
pylib_prefix + 'python' + pylib_ver + python_abi_flags + '.' + pylib_suffix
]
if pylib_loc != ''
pylib_locs = [pylib_loc]
else
pylib_locs = [
python.get_variable('LIBDIR', ''),
python.get_variable('LIBPL', ''),
]
if python.has_variable('LIBDIR')
pylib_locs += python.get_variable('LIBDIR')
endif
if python.has_variable('LIBPL')
pylib_locs += python.get_variable('LIBPL')
endif
# On Windows, python312.dll is in the rootdir where Python is installed,
# which is configured as the "prefix" in sysconfig.
if host_system == 'windows'
pylib_locs += python.get_variable('prefix')
endif
endif
pylib_fname = ''
foreach loc: pylib_locs
foreach fname: pylib_fnames
if fsmod.exists(loc / fname)
fpath = loc / fname
debug(f'Looking for Python library at: @fpath@')
if fsmod.exists(fpath)
pylib_fname = fname
message(f'PY_LIB_FNAME = @fname@ (@loc@)')
break