Checking whether your kit is complete...
Looks good
Creating new 'Build' script for 'MSDOS-Attrib' version '1.03'
/export/home/cpanrun/build/5.6.1/bin/perl Build.PL 
/export/home/cpanrun/build/5.6.1/bin/perl Build
Attrib.xs:27: windows.h: No such file or directory
error building so file from 'lib/MSDOS/Attrib.c' at /export/home/cpanrun/build/5.6.1/lib/site_perl/5.6.1/Module/Build/Base.pm line 1778.
lib/MSDOS/Attrib.pm -> blib/lib/MSDOS/Attrib.pm
lib/MSDOS/Attrib.xs -> lib/MSDOS/Attrib.c
/export/home/cpanrun/build/5.6.1/bin/perl "-I/export/home/cpanrun/build/5.6.1/lib/5.6.1/sun4-solaris-thread-multi" "-I/export/home/cpanrun/build/5.6.1/lib/5.6.1" "/export/home/cpanrun/build/5.6.1/lib/5.6.1/ExtUtils/xsubpp" -noprototypes -typemap "/export/home/cpanrun/build/5.6.1/lib/5.6.1/ExtUtils/typemap" "lib/MSDOS/Attrib.xs"gcc -I/export/home/cpanrun/build/5.6.1/lib/5.6.1/sun4-solaris-thread-multi/CORE -c -DUSE_REENTRANT_API -D_POSIX_PTHREAD_SEMANTICS -D_REENTRANT -fno-strict-aliasing -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -O -o lib/MSDOS/Attrib.o lib/MSDOS/Attrib.c
make: *** [all] Error 2