Checking if your kit is complete...
Looks good
Writing Makefile for Linux::loadavg
cp loadavg.pm blib/lib/Linux/loadavg.pm
/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 loadavg.xs > loadavg.xsc && mv loadavg.xsc loadavg.c
Please specify prototyping behavior for loadavg.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=\"0.05\" -DXS_VERSION=\"0.05\" -fpic -I/home/cpanrun/build/5.6.1/lib/5.6.1/i686-linux-thread-multi/CORE  loadavg.c
Running Mkbootstrap for Linux::loadavg ()
chmod 644 loadavg.bs
rm -f blib/arch/auto/Linux/loadavg/loadavg.so
LD_RUN_PATH="" gcc  -shared loadavg.o  -o blib/arch/auto/Linux/loadavg/loadavg.so     
chmod 755 blib/arch/auto/Linux/loadavg/loadavg.so
cp loadavg.bs blib/arch/auto/Linux/loadavg/loadavg.bs
chmod 644 blib/arch/auto/Linux/loadavg/loadavg.bs
Manifying blib/man3/Linux::loadavg.3
PERL_DL_NONLAZY=1 /home/cpanrun/build/5.6.1/bin/perl -Iblib/arch -Iblib/lib -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 -e 'use Test::Harness qw(&runtests $verbose); $verbose=1; runtests @ARGV;' t/*.t
t/test..............1..8
Can't load 'blib/arch/auto/Linux/loadavg/loadavg.so' for module Linux::loadavg: blib/arch/auto/Linux/loadavg/loadavg.so: undefined symbol: getloadavg at /home/cpanrun/build/5.6.1/lib/5.6.1/i686-linux-thread-multi/DynaLoader.pm line 206.
Compilation failed in require at t/test.t line 8.
BEGIN failed--compilation aborted at t/test.t line 8.
dubious
	Test returned status 255 (wstat 65280, 0xff00)
DIED. FAILED tests 1-8
	Failed 8/8 tests, 0.00% okay
Failed Test Status Wstat Total Fail  Failed  List of Failed
--------------------------------------------------------------------------------
t/test.t   	 255 65280     8    8 100.00%  1-8
Failed 1/1 test scripts, 0.00% okay. 8/8 subtests failed, 0.00% okay.
make: *** [test_dynamic] Error 2