Building fails with error from libtool.
Please attach the entire build log to this bug report.
Created attachment 592038 [details] build.log for sys-cluster/openmpi-2.0.2
/bin/sh ../../../../libtool --tag=CC --mode=link x86_64-pc-linux-gnu-gcc -DNDEBUG -march=native -O2 -pipe -ggdb -finline-functions -fno-strict-aliasing -pthread -module -avoid-version -Wl,-O1 -Wl,--as-needed -Wl,-O2,--as-needed -o mca_pml_ucx.la -rpath /usr/lib64/openmpi pml_ucx.lo pml_ucx_request.lo pml_ucx_datatype.lo pml_ucx_component.lo -lucp -L -lrt -lm -lutil -lhwloc -levent -levent_pthreads libtool: error: require no space between '-L' and '-lrt' make[2]: *** [Makefile:1749: mca_pml_ucx.la] Error 1 Yes, there is definitely something missing there.