pkg/52100: installation of math/py-scipy fails on NetBSD 7.0.1/amd64

[joern.clausen%uni-bielefeld.de@localhost]

>Number:         52100
>Category:       pkg
>Synopsis:       installation of math/py-scipy fails on NetBSD 7.0.1/amd64
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    pkg-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Mar 21 15:15:00 +0000 2017
>Originator:     Joern Clausen
>Release:        
>Organization:
University of Bielefeld
>Environment:
>Description:
Installation of math/py-scipy fails on NetBSD 7.0.1/amd64 with

/usr/pkgsrc/math/py-scipy/work/.wrapper/bin/gfortran -Wall -g -shared  -L/usr/pkg/lib -Wl,-R/usr/pkg/lib -L/usr/lib -Wl,-R/usr/lib build/temp.netbsd-7.0.1-amd64-2.7/scipy/integrate/_quadpackmodule.o -L/usr/pkg/lib -L/usr/pkg/bin/../lib/gcc-lib/x86_64--netbsd/4.1.2 -L/usr/pkg/lib -Lbuild/temp.netbsd-7.0.1-amd64-2.7 -lquadpack -lmach -llapack -llapack -lblas -lblas -lpython2.7 -lgfortran -o build/lib.netbsd-7.0.1-amd64-2.7/scipy/integrate/_quadpack.so
ld: cannot find -lgfortran
ld: cannot find -lgfortran
error: Command "/usr/pkgsrc/math/py-scipy/work/.wrapper/bin/gfortran -Wall -g -shared  -L/usr/pkg/lib -Wl,-R/usr/pkg/lib -L/usr/lib -Wl,-R/usr/lib build/temp.netbsd-7.0.1-amd64-2.7/scipy/integrate/_quadpackmodule.o -L/usr/pkg/lib -L/usr/pkg/bin/../lib/gcc-lib/x86_64--netbsd/4.1.2 -L/usr/pkg/lib -Lbuild/temp.netbsd-7.0.1-amd64-2.7 -lquadpack -lmach -llapack -llapack -lblas -lblas -lpython2.7 -lgfortran -o build/lib.netbsd-7.0.1-amd64-2.7/scipy/integrate/_quadpack.so" failed with exit status 1


NB that this is already the installation phase, the build went fine.

The gfortran wrapper calls g95, which hasn't changed on my system since July 2016.

I tried compilation/installation with and without cwrappers, the error is the same in both cases.
>How-To-Repeat:

>Fix: