Missing rpc header/library with Fedora 28

[dandedrick]

Starting with Fedora 28 /usr/include/rpc/rpc.h was removed from glibc. The replacement was to use /usr/include/libtirpc/rpc/rpc.h and link against libtirpc. The result is that with Fedora 28 or newer running make all fails because it can't find the rpc.h header file.

wfa_con.c:26:10: fatal error: rpc/rpc.h: No such file or directory
 #include <rpc/rpc.h>
          ^~~~~~~~~~~
compilation terminated.

More information on the Fedora changes here.

Since there is no configuration step currently I'm not sure what the best way to fix this would be. Ideally a configure step would determine if libtirpc was present. If it was then the pkg-config could be used and if not then it could fall back to the current behavior.