Hello, when updating openmpi from @4 to @5, my code does not link any more with the messages: ld: cannot find -lrdmacm: No such file or directory ld: cannot find -lefa: No such file or directory ld: cannot find -libverbs: No such file or directory ld: cannot find -lpsm2: No such file or directory
Installing rdma-core and psm2 solves the problem. Here is a way to reproduce the problem: cd /tmp tar xvf `guix build -S cm` cd cm-0.4.3 guix shell --pure openmpi -D cm -- /bin/sh --norc ./configure --enable-mpi make -j Hm, I think the culprit is actually libfabric. It has these two packages as inputs, and contains this in its libfabric.pc: Libs.private: -lpsm2 -lrdmacm -libverbs -lefa -latomic -lpthread -ldl I am not familiar with pkgconfig and do not know what distinguishes the Libs from the Libs.private field. But the line for linking my binary contains this in exactly this order: /gnu/store/0f6bjfrf9kkdqh27y0bab9x9b4i8w5gi-libfabric-1.22.0/lib/libfabric.so -lrdmacm -lefa -libverbs -lpsm2 So this at least confirms the idea that something needs to be done for libfabric. Propagate its inputs? ldd on libfabric.so shows the required libraries librdmacm.so.1 => /gnu/store/2d... and so on, so I do not understand what goes wrong. Andreas
