Checking if your kit is complete...
Looks good
Writing Makefile for Linux::Input::Info
cp Info.pm blib/lib/Linux/Input/Info.pm
/home/cpanrun/ia64-lp64/build/5.6.1/bin/perl -I/home/cpanrun/ia64-lp64/build/5.6.1/lib/5.6.1/IA64.ARCHREV_0-thread-multi-64all -I/home/cpanrun/ia64-lp64/build/5.6.1/lib/5.6.1 /home/cpanrun/ia64-lp64/build/5.6.1/lib/5.6.1/ExtUtils/xsubpp  -typemap /home/cpanrun/ia64-lp64/build/5.6.1/lib/5.6.1/ExtUtils/typemap Info.xs > Info.xsc && mv Info.xsc Info.c
Please specify prototyping behavior for Info.xs (see perlxs manual)
gcc -c  -DUSE_REENTRANT_API -D_POSIX_C_SOURCE=199506L -D_HPUX_SOURCE -mlp64 -L/lib/hpux64 -DUINT32_MAX_BROKEN -fPIC -fno-strict-aliasing -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -O   -DVERSION=\"0.1\" -DXS_VERSION=\"0.1\" -fPIC -I/home/cpanrun/ia64-lp64/build/5.6.1/lib/5.6.1/IA64.ARCHREV_0-thread-multi-64all/CORE  Info.c
In file included from Info.xs:5:
Info.h:12:25: linux/input.h: No such file or directory
Info.h:25:23: asm/types.h: No such file or directory
In file included from Info.xs:5:
Info.h:42: error: syntax error before "__u16"
Info.h:42: warning: no semicolon at end of struct or union
Info.h:43: warning: data definition has no type or storage class
Info.h:44: error: syntax error before "product"
Info.h:44: warning: data definition has no type or storage class
Info.h:45: error: syntax error before "version"
Info.h:45: warning: data definition has no type or storage class
Info.xs: In function `XS_Linux__Input__Info_device_info':
Info.xs:45: error: storage size of `id' isn't known
Info.xs:53: error: invalid application of `sizeof' to an incomplete type
Info.xs:63: error: `_IOC_READ' undeclared (first use in this function)
Info.xs:63: error: (Each undeclared identifier is reported only once
Info.xs:63: error: for each function it appears in.)
make: *** [Info.o] Error 1