Checking if your kit is complete...
Looks good
Note (probably harmless): No library found for -lplotter
Writing Makefile for Graphics::Plotter
cp Plotter.pm blib/lib/Graphics/Plotter.pm
AutoSplitting blib/lib/Graphics/Plotter.pm (blib/lib/auto/Graphics/Plotter)
/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  Plotter.xs > Plotter.xsc && mv Plotter.xsc Plotter.c
Please specify prototyping behavior for Plotter.xs (see perlxs manual)
g++ -c  -I/usr/local/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 -O2   -DVERSION=\"1.0.1\" -DXS_VERSION=\"1.0.1\" +Z "-I/home/cpanrun/pa-risc1.1/build/5.8.2/lib/5.8.2/PA-RISC1.1-thread-multi/CORE"   Plotter.c
g++: +Z: No such file or directory
*Initialization*:1: missing token-sequence in `#assert'
Plotter.xs:22: plotter.h: No such file or directory
make: *** [Plotter.o] Error 1