Checking if your kit is complete...
Looks good
Writing Makefile for Math::BigInteger
cp BigInteger.pod blib/lib/Math/BigInteger.pod
cp BigInteger.pm blib/lib/Math/BigInteger.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 -typemap typemap BigInteger.xs > BigInteger.xsc && mv BigInteger.xsc BigInteger.c
Please specify prototyping behavior for BigInteger.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=\"1.01\" -DXS_VERSION=\"1.01\" -fpic -I/home/cpanrun/build/5.6.1/lib/5.6.1/i686-linux-thread-multi/CORE  BigInteger.c
gcc -c  -DUSE_REENTRANT_API -D_GNU_SOURCE -D_REENTRANT -fno-strict-aliasing -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -O2   -DVERSION=\"1.01\" -DXS_VERSION=\"1.01\" -fpic -I/home/cpanrun/build/5.6.1/lib/5.6.1/i686-linux-thread-multi/CORE  bn.c
bn.c: In function `bn_div':
bn.c:893: warning: return makes integer from pointer without a cast
gcc -c  -DUSE_REENTRANT_API -D_GNU_SOURCE -D_REENTRANT -fno-strict-aliasing -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -O2   -DVERSION=\"1.01\" -DXS_VERSION=\"1.01\" -fpic -I/home/cpanrun/build/5.6.1/lib/5.6.1/i686-linux-thread-multi/CORE  bn_mul.c
gcc -c  -DUSE_REENTRANT_API -D_GNU_SOURCE -D_REENTRANT -fno-strict-aliasing -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -O2   -DVERSION=\"1.01\" -DXS_VERSION=\"1.01\" -fpic -I/home/cpanrun/build/5.6.1/lib/5.6.1/i686-linux-thread-multi/CORE  bn_regs.c
Running Mkbootstrap for Math::BigInteger ()
chmod 644 BigInteger.bs
rm -f blib/arch/auto/Math/BigInteger/BigInteger.so
LD_RUN_PATH="" gcc  -shared BigInteger.o bn.o bn_mul.o bn_regs.o  -o blib/arch/auto/Math/BigInteger/BigInteger.so     
chmod 755 blib/arch/auto/Math/BigInteger/BigInteger.so
cp BigInteger.bs blib/arch/auto/Math/BigInteger/BigInteger.bs
chmod 644 blib/arch/auto/Math/BigInteger/BigInteger.bs
Manifying blib/man3/Math::BigInteger.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 test.pl
1..2
ok 1
ok 2
Installing /home/cpanrun/build/5.6.1/lib/site_perl/5.6.1/i686-linux-thread-multi/auto/Math/BigInteger/BigInteger.so
Installing /home/cpanrun/build/5.6.1/lib/site_perl/5.6.1/i686-linux-thread-multi/auto/Math/BigInteger/BigInteger.bs
Installing /home/cpanrun/build/5.6.1/lib/site_perl/5.6.1/i686-linux-thread-multi/Math/BigInteger.pod
Installing /home/cpanrun/build/5.6.1/lib/site_perl/5.6.1/i686-linux-thread-multi/Math/BigInteger.pm
Installing /home/cpanrun/build/5.6.1/man/man3/Math::BigInteger.3
Appending installation info to /home/cpanrun/build/5.6.1/lib/5.6.1/i686-linux-thread-multi/perllocal.pod