Kevin Kofler via devel wrote: > So now I had a new idea how to figure out what difference the version of > glibc we are compiling against can make: track down the symbol version: > nm -D --with-symbol-versions Downloads/libQt5WebEngineCore.so.5.15.2 | > grep '@GLIBC_2\.33' > U fstat64@GLIBC_2.33 > U fstatat64@GLIBC_2.33 > U lstat64@GLIBC_2.33 > U stat64@GLIBC_2.33 > > So we are getting new symbol versions of the above 4 functions. So now we > only need to know what is different between the above and the syscalls > presumably used previously: > nm -D --with-symbol-versions Downloads/libQt5WebEngineCore.so.5.15.1 | > grep 'stat\(at\)\?64' > U __fxstat64@GLIBC_2.2.5 > U __fxstatat64@GLIBC_2.4 > U __lxstat64@GLIBC_2.2.5 > U __xstat64@GLIBC_2.2.5 > (That's the version from F33 GA, definitely built against an older glibc.)
PS: This commit: https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=8ed005daf0ab03e142500324a34087ce179ae78e is why the version of glibc used at compile time makes a difference. Until glibc 2.32, stat64 etc. were redirected to __xstat64 etc. by inline functions or macros; glibc 2.33 changed them to true functions. As a result, code compiled against glibc 2.32 or older will get the old __xstat64 etc. implementation that is still present, whereas code compiled against glibc 2.33 will get the new stat64 etc. implementation. Kevin Kofler _______________________________________________ devel mailing list -- devel@lists.fedoraproject.org To unsubscribe send an email to devel-le...@lists.fedoraproject.org Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@lists.fedoraproject.org
