Description of problem:

# cat conftest.c
int main() {

  ;
  return 0;
}
# gcc -L/usr/lib64/mpich/lib -Wl,-rpath,/usr/lib64/mpich/lib -lmpi conftest.c
/usr/bin/ld: warning: librt.so.1, needed by /usr/lib64/mpich/lib/libmpi.so, not found (try using -rpath or -rpath-link)
/usr/bin/ld: warning: libpthread.so.0, needed by /usr/lib64/mpich/lib/libmpi.so, not found (try using -rpath or -rpath-link)
/usr/lib64/mpich/lib/libmpi.so: undefined reference to `aio_error64.5'
/usr/lib64/mpich/lib/libmpi.so: undefined reference to `clock_gettime.5'
/usr/lib64/mpich/lib/libmpi.so: undefined reference to `pthread_mutexattr_init.5'
/usr/lib64/mpich/lib/libmpi.so: undefined reference to `aio_return64.5'
/usr/lib64/mpich/lib/libmpi.so: undefined reference to `pthread_create.5'
/usr/lib64/mpich/lib/libmpi.so: undefined reference to `clock_getres.5'
/usr/lib64/mpich/lib/libmpi.so: undefined reference to `pthread_mutexattr_destroy.5'
/usr/lib64/mpich/lib/libmpi.so: undefined reference to `pthread_mutexattr_setpshared.5'
/usr/lib64/mpich/lib/libmpi.so: undefined reference to `pthread_mutexattr_settype.5'
/usr/lib64/mpich/lib/libmpi.so: undefined reference to `aio_suspend64.5'
/usr/lib64/mpich/lib/libmpi.so: undefined reference to `aio_read64.5'
/usr/lib64/mpich/lib/libmpi.so: undefined reference to `aio_write64.5'

On F25 with binutils-2.26.1-1.fc25.x86_64 this works fine.

Version-Release number of selected component (if applicable):
binutils-2.27-6.fc26.x86_64