Buid error on Python 2.1.3 for Solaris 8

[Francis]

I'm trying to build Python 2.1.3 on Solaris 8 (with gcc 3.2.2)
I can find the package 2.2.2 on SunFreeware but Zope  I want to use Python 2.1.3

After ./configure and make there is an error

  rm -f libpython2.1.a
  ar cr libpython2.1.a Modules/getbuildinfo.o
  sh ar: not found 
  *** Error code 1
  make: Fatal error: Command failed for target 'libpython2.1.a'

What's wrong?

Francis