Sorry, you cannot build this module on a non-Cygwin Perl,
but am letting you proceed in case you are trying to build
a release tarball or something.
Checking if your kit is complete...
Looks good
Writing Makefile for Filesys::CygwinPaths
cp lib/Filesys/CygwinPaths.pm blib/lib/Filesys/CygwinPaths.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 Cygwin.typemap  path_protocol.xs > path_protocol.xsc && mv path_protocol.xsc path_protocol.c
Please specify prototyping behavior for path_protocol.xs (see perlxs manual)
cc -c  -I. -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 -Wundef   -DVERSION=\"0.04\" -DXS_VERSION=\"0.04\" +Z "-I/home/cpanrun/pa-risc1.1/build/5.8.2/lib/5.8.2/PA-RISC1.1-thread-multi/CORE"   path_protocol.c
cc: warning 422: Unknown option "-Wundef" ignored.
cpp: "path_protocol.h", line 8: error 4036: Can't open include file 'sys/cygwin.h'.
make: *** [path_protocol.o] Error 1