* Pavel Valena: > ----- Original Message ----- >> From: "Florian Weimer" <fweimer@xxxxxxxxxx> >> To: "Pavel Valena" <pvalena@xxxxxxxxxx> >> Cc: devel@xxxxxxxxxxxxxxxxxxxxxxx >> Sent: Tuesday, May 14, 2019 10:47:41 AM >> Subject: Re: rpmlint: library-not-linked-against-libc (parts of Python stdlib, after gcc 9) >> >> * Pavel Valena: >> >> > The same occurs with Ruby: >> > https://src.fedoraproject.org/rpms/ruby/pull-request/44 >> >> I'm not sure if this is a false positive. I checked fcntl.so, and it >> references __cxa_finalize, as a weak symbol, so it needs to be linked >> against libc.so.6, for ABI stability. >> >> Can you figure out the linker command line? It could be a binutils bug >> in the implementation of --as-needed. > > From Ruby build(rawhide): > https://da.gd/jBhE6 > https://copr.fedorainfracloud.org/coprs/pvalena/ruby/build/887856/ > > ``` > * LDFLAGS: -L. -Wl,-z,relro -Wl,--as-needed -Wl,-z,now \ > -specs=/usr/lib/rpm/redhat/redhat-hardened-ld \ > -fstack-protector-strong -rdynamic \ > -Wl,-export-dynamic > * DLDFLAGS: -Wl,-z,relro -Wl,--as-needed -Wl,-z,now \ > -specs=/usr/lib/rpm/redhat/redhat-hardened-ld > ``` > > The full command is: > ``` > gcc -shared -o ../../.ext/x86_64-linux/fcntl.so fcntl.o -L. -L../.. -L. -Wl,-z,relro -Wl,--as-needed -Wl,-z,now -specs=/usr/lib/rpm/redhat/redhat-hardened-ld -fstack-protector-strong -rdynamic -Wl,-export-dynamic -Wl,-z,relro -Wl,--as-needed -Wl,-z,now -specs=/usr/lib/rpm/redhat/redhat-hardened-ld -m64 -lruby -lm -lc > ``` > ________________________________ > > > Wich is different from F29(same SRPM; result linked correctly): > ``` > * LDFLAGS: -L. -Wl,-z,relro -Wl,-z,now \ > -specs=/usr/lib/rpm/redhat/redhat-hardened-ld \ > -fstack-protector-strong -rdynamic \ > -Wl,-export-dynamic > * DLDFLAGS: -Wl,-z,relro -Wl,-z,now \ > -specs=/usr/lib/rpm/redhat/redhat-hardened-ld > ``` > ``` > gcc -shared -o ../../.ext/x86_64-linux/fcntl.so fcntl.o -L. -L../.. -L. -Wl,-z,relro -Wl,-z,now -specs=/usr/lib/rpm/redhat/redhat-hardened-ld -fstack-protector-strong -rdynamic -Wl,-export-dynamic -Wl,-z,relro -Wl,-z,now -specs=/usr/lib/rpm/redhat/redhat-hardened-ld -m64 -lruby -lm -lc > ``` Yes, it's due to the --as-needed change. Problems like this one are expected. The ELF tooling certainly needs to be updated for this change. Thanks, Florian _______________________________________________ devel mailing list -- devel@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to devel-leave@xxxxxxxxxxxxxxxxxxxxxxx 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@xxxxxxxxxxxxxxxxxxxxxxx
