pkg/51454: Problem compiling xentools

[info%meyer-datasystems.de@localhost]

>Number:         51454
>Category:       pkg
>Synopsis:       Problem compiling xentools
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    pkg-manager
>State:          open
>Class:          support
>Submitter-Id:   net
>Arrival-Date:   Wed Aug 31 14:30:00 +0000 2016
>Originator:     Ingo Meyer
>Release:        pkgsrc current
>Organization:
meyer datasystems
>Environment:
NetBSD mfs0.GFZOP 7.0.1 NetBSD 7.0.1 (XEN3_DOM0.201605221355Z) amd64
>Description:
xentools4(2|5|6) cannot be configured because no suitable curses-library is detected:
checking for uuid.h... yes
checking curses.h usability... yes
checking curses.h presence... yes
checking for curses.h... yes
checking for clear in -lcurses... no
checking ncurses.h usability... yes
checking ncurses.h presence... yes
checking for ncurses.h... yes
checking for clear in -lncurses... no
configure: error: Unable to find a suitable curses library
*** Error code 1

But there is:

-r--r--r--  1 root  wheel  340676 Aug 14 04:28 /usr/lib/libcurses.a
lrwxr-xr-x  1 root  wheel      16 Aug 14 04:28 /usr/lib/libcurses.so -> libcurses.so.7.0
lrwxr-xr-x  1 root  wheel      16 Aug 14 04:28 /usr/lib/libcurses.so.7 -> libcurses.so.7.0
-r--r--r--  1 root  wheel  184279 Aug 14 04:28 /usr/lib/libcurses.so.7.0
-r--r--r--  1 root  wheel  362260 Aug 14 04:28 /usr/lib/libcurses_p.a
-r--r--r--  1 root  wheel  336980 Aug 14 04:28 /usr/lib/libcurses_pic.a

As well as:
-rw-r--r--  1 root  wheel  681050 Jul 14 04:20 /usr/pkg/lib/libncurses.a
-rwxr-xr-x  1 root  wheel     969 Jul 14 04:20 /usr/pkg/lib/libncurses.la
lrwxr-xr-x  1 root  wheel      19 Jul 14 04:20 /usr/pkg/lib/libncurses.so -> libncurses.so.6.0.0
lrwxr-xr-x  1 root  wheel      19 Aug 18 10:16 /usr/pkg/lib/libncurses.so.5 -> libncurses.so.6.0.0
lrwxr-xr-x  1 root  wheel      19 Jul 14 04:20 /usr/pkg/lib/libncurses.so.6 -> libncurses.so.6.0.0
-rwxr-xr-x  1 root  wheel  395198 Jul 14 04:20 /usr/pkg/lib/libncurses.so.6.0.0

>How-To-Repeat:
this problem exists in xentools42, xentools45 and xentools46
>Fix:
I tried to link libncurses.so.6.0.0 manually into work/.buildlink/lib, but with no success.