On 17.11.2020 16:13, Dennis Willen via Cygwin wrote:
Looks like copy/paste mangled the lines.  I'll try again.  Is the openMPI 
distribution not picking up all the libraries that should come along?
Denny@DESKTOP-BEBCMC4 ~/MPI_tests$ mpifort 
testmpi.f90/usr/lib/gcc/x86_64-pc-cygwin/10/../../../../x86_64-pc-cygwin/bin/ld:
 cannot find 
-lhwloc/usr/lib/gcc/x86_64-pc-cygwin/10/../../../../x86_64-pc-cygwin/bin/ld: 
cannot find 
-levent_core/usr/lib/gcc/x86_64-pc-cygwin/10/../../../../x86_64-pc-cygwin/bin/ld:
 cannot find 
-levent_pthreads/usr/lib/gcc/x86_64-pc-cygwin/10/../../../../x86_64-pc-cygwin/bin/ld:
 cannot find -lzcollect2: error: ld returned 1 exit status


can you send me the log files ?
It seems your system has problem in properly breaking the lines

I do not see problem on the /usr/lib/pkgconfig
files

$ grep  Libs ompi.pc
# dependencies), so only list these in Libs.private.
Libs: -L${libdir}     -L${libdir}  -lmpi
Libs.private: -lhwloc -levent_core -levent_pthreads -lz
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