Link (ordering??) problem
Dr. David Alan Gilbert
dave at treblig.org
Thu Mar 20 12:27:26 UTC 2025
* Michael Stahl (michael.stahl at allotropia.de) wrote:
>
>
> On 20/03/2025 01:13, Dr. David Alan Gilbert wrote:
> > Hi,
> > On my newly upgraded Fedora 41->42 beta desktop I'm seeing the link
> > error:
> >
> > $ make debug=t
> > [LNK] Library/libsofficeapp.so
> > /discs/fast/core/desktop/source/lib/init.cxx:6354: error: undefined reference to 'ublock_getCode_77'
> > collect2: error: ld returned 1 exit status
> > make[1]: *** [/discs/fast/core/desktop/Library_sofficeapp.mk:10: /discs/fast/core/instdir/program/libsofficeapp.so] Error 1
> >
> > $ rpm -qa|grep icu
> > libicu-76.1-4.fc42.x86_64
>
> ...
>
> > where the interesting bit is:
> > -Wl,--start-group -L/usr/lib64/pkgconfig/../../lib64 -ldbus-1 -L$W/UnpackedTarball/icu/source/lib -licui18n -L$W/UnpackedTarball/icu/source/lib -licuuc -L$W/UnpackedTarball/curl/lib/.libs -lcurl -Wl,--end-group
> >
> > so we've got -L/usr/lib64/pkgconfig/../../lib64 before -L$W/UnpackedTarball/icu/source/lib
> > nd /usr/lib64/libicuuc.so points to the .76.1 version
>
> that is indeed a problem, it is obfuscated -L/usr/lib64 and that should
> never be explicitly on the link command as it will cause exactly this kind
> of problem
>
> we already try to filter it in configure.ac:
>
> > case "$f" in
> > # let's start with Fedora's paths for now
> > -L/lib|-L/lib/|-L/lib64|-L/lib64/|-L/usr/lib|-L/usr/lib/|-L/usr/lib64|-L/usr/lib64/)
> > # ignore it: on UNIXoids it is searched by default anyway
> > # but if it's given explicitly then it may override other paths
> > # (on macOS it would be an error to use it instead of SDK)
> > ;;
>
> but it was cunningly obfuscated so the filtering doesn't work for you.
>
> you can try to search in config_host.mk which system library is responsible.
export DBUS_LIBS=$(gb_SPACE) -L/usr/lib64/pkgconfig/../../lib64 -ldbus-1
hmmm
> imho it's a bug in the packageconfig file of that system library, these
> should never contain system paths that are searched by default anyway.
dg at dalek:~$ cat /usr/lib64/pkgconfig/dbus-1.pc
prefix=${pcfiledir}/../..
includedir=${prefix}/include
libdir=${prefix}/lib64
....
it looks like the dbus-1.pc (and the librsvg-2.0.pc) are the only two
pkgconfigs that do that.
Dave
>
--
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