Missing shared library search path

[m-diers]

When creating hpx with lci 1.7.7 from a non-standard installation directory, there is a link error with the lci libraries. The interdependent lci libraries are not found.
This can be fixed temporarily during the build of lci using the following example:

cmake -DCMAKE_INSTALL_PREFIX=/opt/lci/ \
      -DCMAKE_INSTALL_RPATH='$ORIGIN/../lib' \
      ../lci-src/

This should already be fixed internally.

[JiakunYan]

Sorry, just saw this. Did you mean if LCI is built externally (not HPX_WITH_AUTOFETCH_LCI) and installed at a non-standard location, the HPX runtime failed to find the LCI installation? If this is the case, it is expected. Common practice is to tell HPX where to find a library using LD_LIBRARY_PATH.

[m-diers]

Yes, LCI is built externally (not HPX_WITH_AUTOFETCH_LCI) and installed at a non-standard location (/opt/lci). Configure HPX with -DLCI_ROOT=/opt/lci so far everything fits, but when linking an application against HPX there are link problems (or unresolved symbols) that originate from the sub-libraries of LCI (liblct.so, liblci-ucx.so), as these are not found automatically. I was able to fix this with the above mentioned fix, adding a rpath to the LCI-libs. I think instead of the origin hack, /opt/lci/lib would also work in this case.