/home/cpanrun/build/5.6.1/bin/perl Build.PL 
Creating custom builder _build/lib/My/Builder.pm in _build/lib/My
Checking whether your kit is complete...
Looks good
Creating new 'Build' script for 'GCJ-Cni' version '0.03'
/home/cpanrun/build/5.6.1/bin/perl Build
lib/GCJ/Cni.pm -> blib/lib/GCJ/Cni.pm
lib/GCJ/Cni.xs -> lib/GCJ/Cni.c
/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" -noprototypes -typemap "/home/cpanrun/build/5.6.1/lib/5.6.1/ExtUtils/typemap" "lib/GCJ/Cni.xs"gcc -I/home/cpanrun/build/5.6.1/lib/5.6.1/i686-linux-thread-multi/CORE -x c++ -include gcj/cni.h -c -DUSE_REENTRANT_API -D_GNU_SOURCE -D_REENTRANT -fno-strict-aliasing -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -O2 -o lib/GCJ/Cni.o lib/GCJ/Cni.c
cpp: gcj/cni.h: No such file or directory
error building so file from 'lib/GCJ/Cni.c' at /home/cpanrun/build/5.6.1/lib/site_perl/5.6.1/Module/Build/Base.pm line 1778.
make: *** [all] Error 2