Hi,
When building version the python modules for version 5.5.5 for openSUSE* on 32-bit systems (i586 specifically), we see builds failing due to multiple violation of the C++ ODR. These are reported thus:

[  114s]   [ 99%] Linking CXX shared library /home/abuild/rpmbuild/BUILD/xrootd-5.5.5/build/lib.linux-i686-cpython-39/pyxrootd/libXrdPosixPreload.so
[  114s]   /home/abuild/rpmbuild/BUILD/xrootd-5.5.5/src/./XrdPosix/XrdPosixLinkage.hh:347:7: error: type ‘struct XrdPosixLinkage’ violates the C++ One Definition Rule [-Werror=odr]
[  114s]     347 | class XrdPosixLinkage
[  114s]         |       ^
[  114s]   /home/abuild/rpmbuild/BUILD/xrootd-5.5.5/src/./XrdPosix/XrdPosixLinkage.hh:347:7: note: a different type is defined in another translation unit
[  114s]     347 | class XrdPosixLinkage
[  114s]         |       ^
[  114s]   /home/abuild/rpmbuild/BUILD/xrootd-5.5.5/src/./XrdPosix/XrdPosixLinkage.hh:365:26: note: the first difference of corresponding definitions is field ‘Fseeko’
[  114s]     365 |       Retv_Fseeko      (*Fseeko)(Args_Fseeko);
[  114s]         |                          ^
[  114s]   /home/abuild/rpmbuild/BUILD/xrootd-5.5.5/src/./XrdPosix/XrdPosixLinkage.hh:365:26: note: a field of same name but different type is defined in another translation unit
[  114s]     365 |       Retv_Fseeko      (*Fseeko)(Args_Fseeko);
[  114s]         |                          ^
[  114s]   /home/abuild/rpmbuild/BUILD/xrootd-5.5.5/src/./XrdPosix/XrdPosixLinkage.hh:347:7: note: type mismatch in parameter 2
[  114s]     347 | class XrdPosixLinkage
[  114s]         |       ^
[  114s]   /home/abuild/rpmbuild/BUILD/xrootd-5.5.5/src/XrdPosix/XrdPosixPreload32.cc:76:24: error: ‘Xunix’ violates the C++ One Definition Rule [-Werror=odr]
[  114s]      76 | extern XrdPosixLinkage Xunix;
[  114s]         |                        ^
[  114s]   /home/abuild/rpmbuild/BUILD/xrootd-5.5.5/src/./XrdPosix/XrdPosixLinkage.hh:347:7: note: type ‘struct XrdPosixLinkage’ itself violates the C++ One Definition Rule
[  114s]     347 | class XrdPosixLinkage
[  114s]         |       ^
[  114s]   /home/abuild/rpmbuild/BUILD/xrootd-5.5.5/src/XrdPosix/XrdPosixLinkage.cc:56:17: note: ‘Xunix’ was previously declared here
[  114s]      56 | XrdPosixLinkage Xunix;
[  114s]         |                 ^
[  114s]   lto1: all warnings being treated as errors

We see no such problems with 64 bit builds however.

Our build uses the following libraries/compilers:

cmake 3.26
GCC 13.1.1
Python 3.9, 3.10, 3.11

Happy to supply any more information, if needed, to help debug and fix the issue. In the meanwhile, here is the full build log:
xrootd_i586_build_log.zip

Thanks in advance.

We include commit 2401509 as a patch (lightly rebased to apply against 5.5.5) to get the python modules building. You may have a detailed look at our patches and build status here temporarily.

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