Checking if your kit is complete...
Looks good
Note (probably harmless): No library found for -lkrb
Note (probably harmless): No library found for -ldes
Note (probably harmless): No library found for -lresolv
Writing Makefile for Authen::Krb4
cp Krb4.pm blib/lib/Authen/Krb4.pm
/home/cpanrun/pa-risc1.1/build/5.8.2/bin/perl /home/cpanrun/pa-risc1.1/build/5.8.2/lib/5.8.2/ExtUtils/xsubpp  -typemap /home/cpanrun/pa-risc1.1/build/5.8.2/lib/5.8.2/ExtUtils/typemap -typemap typemap  Krb4.xs > Krb4.xsc && mv Krb4.xsc Krb4.c
Please specify prototyping behavior for Krb4.xs (see perlxs manual)
cc -c  -I/usr/local/krb4/include -D_POSIX_C_SOURCE=199506L -D_REENTRANT -Ae -D_HPUX_SOURCE -Wl,+vnocompatwarnings -DNO_HASH_SEED -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -fast +Onolimit +Opromote_indirect_calls +DAportable +DS2.0   -DVERSION=\"1.1\" -DXS_VERSION=\"1.1\" +Z "-I/home/cpanrun/pa-risc1.1/build/5.8.2/lib/5.8.2/PA-RISC1.1-thread-multi/CORE"   Krb4.c
cpp: "Krb4.xs", line 19: error 4036: Can't open include file 'krb.h'.
cpp: "Krb4.xs", line 20: error 4036: Can't open include file 'des.h'.
make: *** [Krb4.o] Error 1