* Robbie Harwood: > Zbigniew Jędrzejewski-Szmek <zbys...@in.waw.pl> writes: > >> 1. pc(5) talks about "package", as if one would want to link to a >> whole "package" instead one of the specific library files provided >> by a package. Thankfully most .pc files only list one "-l" in Libs. >> (Counterexamples: tbbmalloc_proxy.pc says 'Libs:-ltbbmalloc_proxy >> -ltbbmalloc', >> and mit-krb5.pc says Libs:-lkrb5 -lk5crypto -lcom_err.) > > k5crypto and com_err are internal libraries used across the different > interfaces krb5 provides - they're not intended for external > consumption, and upstream doesn't support their direct use by other > applications. > >> To a large extent pkgconfig files are duplicating dependency logic >> that is already provided by distro packaging (rpm in our case). This >> would seem like an OK idea: upstreams specify which libraries they >> need and downstreams use it. > > So you're technically right that this information is already duplicated > by the dependencies libkrb5.so has already, but that's only true on > Linux. The .pc files are provided by upstream, and need to work on all > OSs that upstream supports - which includes OSs whose linkers don't > follow dependencies, like AIX.
But dropping these -l directives on Linux would ensure that it's not possible to link against those internal symbols by accident (at least from applications; with shared objects, you just get underlinking unless you specify -Wl,-z,defs). The Linux linking failure could actually help other systems as well, to avoid those unwanted reliance on internal features. Thanks, Florian _______________________________________________ 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 Do not reply to spam on the list, report it: https://pagure.io/fedora-infrastructure
