gnupg on Solaris

[Remco Post]

Hi,

I tried to build gpg on Solaris 2.6 yesterday, but make dies with:
make: Fatal error: Don't know how to make target `mpih-add1.lo'
Current working directory /export/home/remco/gnupg-1.0.0/mpi
*** Error code 1
make: Fatal error: Command failed for target `all-recursive'
Current working directory /export/home/remco/gnupg-1.0.0
*** Error code 1
make: Fatal error: Command failed for target `all-recursive-am'

Does anybody know how to fix this (or where I can find out how to fix this....)

TIA

Remco