Note (probably harmless): No library found for -lgmp
Checking if your kit is complete...
Looks good
Writing Makefile for Math::GMP
cp lib/Math/GMP.pm blib/lib/Math/GMP.pm
AutoSplitting blib/lib/Math/GMP.pm (blib/lib/auto/Math/GMP)
/export/home/cpanrun/build/5.6.1/bin/perl -I/export/home/cpanrun/build/5.6.1/lib/5.6.1/sun4-solaris-thread-multi -I/export/home/cpanrun/build/5.6.1/lib/5.6.1 /export/home/cpanrun/build/5.6.1/lib/5.6.1/ExtUtils/xsubpp  -typemap /export/home/cpanrun/build/5.6.1/lib/5.6.1/ExtUtils/typemap -typemap typemap GMP.xs > GMP.xsc && mv GMP.xsc GMP.c
gcc -c  -DUSE_REENTRANT_API -D_POSIX_PTHREAD_SEMANTICS -D_REENTRANT -fno-strict-aliasing -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -O   -DVERSION=\"2.04\" -DXS_VERSION=\"2.04\" -fPIC -I/export/home/cpanrun/build/5.6.1/lib/5.6.1/sun4-solaris-thread-multi/CORE  GMP.c
GMP.xs:4: gmp.h: No such file or directory
make: *** [GMP.o] Error 1