I had apache 2.4 already installed with xampp.I tried adding mod_wsgi using the steps mentioned here
But when I add the line
LoadModule wsgi_module
@LarryMartell I met the same issue on windows and fixed it. You can try to copy file apr_perms_set.h from apr repository (https://github.com/traviscross/apr) to Apache2.4's include folder.
apr_perms_set.h
apr