just memo

t/bigintg.....Can't load '../blib/arch/auto/Math/BigInt/GMP/GMP.bundle' for module Math::BigInt:
:GMP: dlopen(../blib/arch/auto/Math/BigInt/GMP/GMP.bundle, 2): Symbol not found: ___gmpz_add
  Referenced from: /private/var/root/.cpan/build/Math-BigInt-GMP-1.24-gZOc0e/blib/arch/auto/Math
/BigInt/GMP/GMP.bundle
  Expected in: dynamic lookup
 at t/bigintg.t line 15
Compilation failed in require at t/bigintg.t line 15.
BEGIN failed--compilation aborted at t/bigintg.t line 15.

try this: http://blog.clouder.jp/archives/001049.html -> Installed!