Hi David,

We do not support MPICH on Windows systems anymore.
https://wiki.mpich.org/mpich/index.php/Frequently_Asked_Questions#Q:_Why_can.27t_I_build_MPICH_on_Windows_anymore.3F

Please try MS-MPI instead, and you can contact the Microsoft team for any future question.

Min

On 1/9/17 9:59 PM, David Alan Hjelle wrote:
Hi!

I’m trying to compile mpich under Cygwin. Things configure fine, but I’m running into errors during make.

The first error I see is:

/usr/include/w32api/psdk_inc/_ip_types.h:25:8: error: redefinition of ‘struct hostent’
 struct hostent {
        ^
In file included from ./../../mpl/include/mplsock.h:17:0,
                 from ./../../mpl/include/mpl.h:114,
                 from ./include/hydra.h:17,
                 from utils/alloc/alloc.c:7:

I’m attaching the c.txt and m.txt files as defined in the install guide.

Thanks for any pointers you might have!

David Alan Hjelle
1 Corinthians 2:2
http://thehjellejar.com/

See the church management software I build at Icon Systems, Inc.
Check out 
Rita’s spoons.