pkg/48272: octave and blas build failure

[prlw1%cam.ac.uk@localhost]

>Number:         48272
>Category:       pkg
>Synopsis:       octave and blas fail to build
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    pkg-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Oct 04 13:05:00 +0000 2013
>Originator:     Patrick Welche
>Release:        NetBSD 6.99.24
>Organization:
>Environment:
NetBSD-current/amd64 with base GCC
>Description:
Building octave gets stuck with:

  /usr/lib/libstdc++.so.7: undefined reference to `_Unwind_GetIPInfo@GCC_4.2.0'

Thinking this may have something to do with fortran being built with a
different compiler to the one which build libstdc++, I tried rebuilding
g95 and libtool-fortran. Now octave fails on its dependency blas with:

--- libblas.la ---
libtool-fortran  --mode=link --tag=F77 g95 -o libblas.la caxpy.lo ...
   ztrsv.lo   -rpath /usr/pkg/lib -version-info 1:1
libtool-fortran: link: g77 -shared   .libs/caxpy.o ...  .libs/ztrsv.o
   -L/usr/obj/pkgsrc/math/blas/work.x86_64/.buildlink/lib
   -soname libblas.so.1 -o .libs/libblas.so.1.0.1
g95: libblas.so.1: No such file or directory
g95: unrecognized option '-soname'
*** [libblas.la] Error code 1 
>How-To-Repeat:
Try to build octave.
>Fix: