Checking if your kit is complete...
Looks good
Note (probably harmless): No library found for -lhid
Note (probably harmless): No library found for -lusb
Writing Makefile for Device::MX240
cp MX240.pm blib/lib/Device/MX240.pm
AutoSplitting blib/lib/Device/MX240.pm (blib/lib/auto/Device/MX240)
/home/cpanrun/build/5.6.1/bin/perl -I/home/cpanrun/build/5.6.1/lib/5.6.1/i686-linux-thread-multi -I/home/cpanrun/build/5.6.1/lib/5.6.1 /home/cpanrun/build/5.6.1/lib/5.6.1/ExtUtils/xsubpp  -typemap /home/cpanrun/build/5.6.1/lib/5.6.1/ExtUtils/typemap MX240.xs > MX240.xsc && mv MX240.xsc MX240.c
Please specify prototyping behavior for MX240.xs (see perlxs manual)
gcc -c  -DUSE_REENTRANT_API -D_GNU_SOURCE -D_REENTRANT -fno-strict-aliasing -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -O2   -DVERSION=\"0.04\" -DXS_VERSION=\"0.04\" -fpic -I/home/cpanrun/build/5.6.1/lib/5.6.1/i686-linux-thread-multi/CORE  MX240.c
MX240.xs:8: hid.h: No such file or directory
make: *** [MX240.o] Error 1