Installing of GNU Ghostscript shared library:

  tar zxvpf gnu_ghostscript-8.15.tar.gz
  cd gnu_ghostscript-8.15
  ./configure --prefix=/usr/local
  make so
  make soinstall

Installing of GSAPI Perl-Module:
  
/usr/bin/perl Makefile.PL CCFLAGS=-I../gnu_ghostscript-8.15/src
make
make test
make UNINST=1 install