[Koha] Newbie Query

[david]

Tried that : said that linux-kernel-headers was a virtual package, provided by linux-libc-dev, so installed that with apt-get and 
still getting errors: 
Help !

...
Writing Makefile for Bit::Vector
Writing patchlevel.h for /usr/bin/perl (5.008008)
cp lib/Bit/Vector/Overload.pm blib/lib/Bit/Vector/Overload.pm
cp Vector.pm blib/lib/Bit/Vector.pm
cp Vector.pod blib/lib/Bit/Vector.pod
cp lib/Bit/Vector/String.pod blib/lib/Bit/Vector/String.pod
cp lib/Bit/Vector/Overload.pod blib/lib/Bit/Vector/Overload.pod
cp lib/Bit/Vector/String.pm blib/lib/Bit/Vector/String.pm
cc -c   -D_REENTRANT -D_GNU_SOURCE -DTHREADS_HAVE_PIDS -DDEBIAN -fno-strict-aliasing -pipe -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -O2   -DVERSION=\"6.4\" -DXS_VERSION=\"6.4\" -fPIC "-I/usr/lib/perl/5.8/CORE"   BitVector.c
BitVector.c:8:80: error: stdlib.h: No such file or directory
In file included from /usr/lib/gcc/i486-linux-gnu/4.1.2/include/syslimits.h:7,
                 from /usr/lib/gcc/i486-linux-gnu/4.1.2/include/limits.h:11,
                 from BitVector.c:9:
/usr/lib/gcc/i486-linux-gnu/4.1.2/include/limits.h:122:61: error: limits.h: No such file or directory
BitVector.c:10:80: error: string.h: No such file or directory
BitVector.c:11:80: error: ctype.h: No such file or directory
BitVector.c: In function âBitVector_Errorâ:
BitVector.c:508: error: âNULLâ undeclared (first use in this function)
BitVector.c:508: error: (Each undeclared identifier is reported only once
BitVector.c:508: error: for each function it appears in.)
BitVector.c: In function âBitVector_Bootâ:
BitVector.c:547: error: âsize_tâ undeclared (first use in this function)
BitVector.c:578: warning: incompatible implicit declaration of built-in function âmallocâ
BitVector.c:580: error: âNULLâ undeclared (first use in this function)
BitVector.c: In function âBitVector_Disposeâ: