Created attachment 912427 [details]
avoid build steps of mpi subpackages if not requested

Description of problem:

i had to rebuild the hdf5 package and to speed up things i disabled in the spec file the mpi support.
Now the build fails in the loop
 for mpi in %{mpi_list}
because now mpi_list is not defined and mpi is set to '%{mpi_list}'


Version-Release number of selected component (if applicable):
hdf5-1.8.11-6.fc20.x86_64


How reproducible:

Steps to Reproduce:
1.
 set in the hdf5.spec file
  %global with_mpich 0
  %global with_openmpi 0

2.
 rpmbuild -ba hdf5.spec
3.

Actual results:
build of packages fails

Expected results:
packages are build

Additional info:

to succeed i put some %if around the mpi loop.