STINNER Victor <vstin...@python.org> added the comment:
This function is quite complicated on Linux:
def find_library(name):
# See issue #9998
return _findSoname_ldconfig(name) or \
_get_soname(_findLib_gcc(name)) or
_get_soname(_findLib_ld(name))
_findSoname_ldconfig() uses "/sbin/ldconfig -p" and searchs for 'libc6,x86-64'
in the output (on x86-64).
_findLib_gcc() uses "gcc -Wl,-t -o tmp -lc" command and search for "lib" in the
created "tmp" file.
_findLib_ld() uses "ld -t -lc" command and searchs for "lib" pattern.
The exact code is more complicated :-) You should debug this issue by running
these commands manually on Debian.
Note: python3.9 -c 'import ctypes.util; print(ctypes.util.find_library("c"))'
commands displays libc.so.6 with Python 3.8, 3.9 and 3.10 on Fedora. I cannot
reproduce the issue on Fedora 33 (x86-64).
----------
nosy: +vstinner
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<https://bugs.python.org/issue42580>
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