Checking if your kit is complete...
Looks good
Writing Makefile for PowerBuilder::ORCA
cp ORCA.pm blib/lib/PowerBuilder/ORCA.pm
AutoSplitting blib/lib/PowerBuilder/ORCA.pm (blib/lib/auto/PowerBuilder/ORCA)
/home/cpanrun/pa-risc1.1/build/5.6.1/bin/perl -I/home/cpanrun/pa-risc1.1/build/5.6.1/lib/5.6.1/PA-RISC1.1-thread-multi -I/home/cpanrun/pa-risc1.1/build/5.6.1/lib/5.6.1 /home/cpanrun/pa-risc1.1/build/5.6.1/lib/5.6.1/ExtUtils/xsubpp  -typemap /home/cpanrun/pa-risc1.1/build/5.6.1/lib/5.6.1/ExtUtils/typemap ORCA.xs > ORCA.xsc && mv ORCA.xsc ORCA.c
Please specify prototyping behavior for ORCA.xs (see perlxs manual)
cc -c  -D_POSIX_C_SOURCE=199506L -D_HPUX_SOURCE +DA1.1 +DS2.0a +z -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -Ae -O +Onolimit   -DVERSION=\"0.05\" -DXS_VERSION=\"0.05\" +z -I/home/cpanrun/pa-risc1.1/build/5.6.1/lib/5.6.1/PA-RISC1.1-thread-multi/CORE  ORCA.c
cpp: "ORCA.xs", line 12: error 4036: Can't open include file 'windows.h'.
cpp: "ORCA.xs", line 14: error 4036: Can't open include file 'pborca.h'.
make: *** [ORCA.o] Error 1