Checking if your kit is complete...
Looks good
'SIGN' is not a known MakeMaker parameter name.
Writing Makefile for Scalar::Readonly
cp lib/Scalar/Readonly.pm blib/lib/Scalar/Readonly.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 Readonly.xs > Readonly.xsc && mv Readonly.xsc Readonly.c
Please specify prototyping behavior for Readonly.xs (see perlxs manual)
gcc -c -I. -DUSE_REENTRANT_API -D_GNU_SOURCE -D_REENTRANT -fno-strict-aliasing -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -O2   -DVERSION=\"0.02\" -DXS_VERSION=\"0.02\" -fpic -I/home/cpanrun/build/5.6.1/lib/5.6.1/i686-linux-thread-multi/CORE  Readonly.c
Running Mkbootstrap for Scalar::Readonly ()
chmod 644 Readonly.bs
rm -f blib/arch/auto/Scalar/Readonly/Readonly.so
LD_RUN_PATH="" gcc  -shared Readonly.o  -o blib/arch/auto/Scalar/Readonly/Readonly.so     
chmod 755 blib/arch/auto/Scalar/Readonly/Readonly.so
cp Readonly.bs blib/arch/auto/Scalar/Readonly/Readonly.bs
chmod 644 blib/arch/auto/Scalar/Readonly/Readonly.bs
Manifying blib/man3/Scalar::Readonly.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=0; runtests @ARGV;' t/*.t
t/simple............ok
All tests successful.
Files=1, Tests=4,  0 wallclock secs ( 0.33 cusr +  0.05 csys =  0.38 CPU)
Installing /home/cpanrun/build/5.6.1/lib/site_perl/5.6.1/i686-linux-thread-multi/auto/Scalar/Readonly/Readonly.so
Installing /home/cpanrun/build/5.6.1/lib/site_perl/5.6.1/i686-linux-thread-multi/auto/Scalar/Readonly/Readonly.bs
Installing /home/cpanrun/build/5.6.1/lib/site_perl/5.6.1/i686-linux-thread-multi/Scalar/Readonly.pm
Installing /home/cpanrun/build/5.6.1/man/man3/Scalar::Readonly.3
Appending installation info to /home/cpanrun/build/5.6.1/lib/5.6.1/i686-linux-thread-multi/perllocal.pod