IRIX and .so numbers

[Nick Blievers]

Hi,
        in ltmain.in there is the following block of code:
        irix | nonstopux)
          case $version_type in
            nonstopux) verstring_prefix=nonstopux ;;
            *)         verstring_prefix=sgi ;;
          esac
          verstring="$verstring_prefix$major.$revision"

          major=`expr $current - $age + 1`

          # Add in all the interfaces that we are compatible with.
          loop=$revision
          while test "$loop" -ne 0; do
            iface=`expr $revision - $loop`
            loop=`expr $loop - 1`
            verstring="$verstring_prefix$major.$iface:$verstring"
          done

          # Before this point, $major must not contain `.'.
          major=.$major
          versuffix="$major.$revision"
          ;;

        linux)
          major=.`expr $current - $age`
          versuffix="$major.$age.$revision"
          ;;

Can anyone explain why major=`expr $current - $age + 1` for IRIX? When I am
building freetype, I get *.so.6 on Linux and *.so.7 on IRIX, which suggests
the +1 is erroneous. Can anyone confirm?

Removing the +1 seems to give the desired results, and allows my OpenOffice
build to continue.

Thanks

Nick