pkg/43724: Tru64: devel/libslang2-2.2.2 is misdetecting zlib presence

[rumi%rtfm.hu@localhost]

>Number:         43724
>Category:       pkg
>Synopsis:       Tru64: devel/libslang2-2.2.2 is misdetecting zlib presence
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    pkg-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Aug 08 10:20:01 +0000 2010
>Originator:     Szabolcs Rumi
>Release:        Tru64 5.1B-5
>Organization:
>Environment:
# sizer -v
HP Tru64 UNIX V5.1B (Rev. 2650); Thu Dec 17 18:47:21 CET 2009
# cc -V
Compaq C V6.5-303 (dtk) on HP Tru64 UNIX V5.1B (Rev. 2650)
Compiler Driver V6.5-302 (dtk) cc Driver
# cxx -V
Compaq C++ V7.1-006 for HP Tru64 UNIX V5.1B (Rev. 2650)
Compiler Driver V7.1-006 (cxx) cxx Driver

pkgsrc-current (12/26/2009 snapshot)

>Description:
Basically two problems:

checking for the z library and header files zlib.h... no

configure:12863: checking for the z library and header files zlib.h
configure:13004: result: no

Despite:

# pkg_info | grep zlib
zlib-1.2.3          General purpose data compression library

Then, in line with the above slang does not compile nor install it's 
zlib-module which in turn leads to this problem:

=> Running POST-INSTALL script actions
libslang2-2.2.2: copying /usr/pkg/share/examples/libslang2/slsh.rc to 
/usr/pkg/etc/slsh.rc
pkg_create: can't stat `/usr/pkg/lib/slang/v2/modules/zlib-module.la'
=> Registering installation for libslang2-2.2.2
pkg_admin: libslang2-2.2.2: File `/usr/pkg/lib/slang/v2/modules/zlib-module.la' 
is in +CONTENTS but not on filesystem!
libslang2-2.2.2 requires installed package libiconv-1.12nb1
===> Building binary package for libslang2-2.2.2
=> Creating binary package /usr/pkgsrc/packages/All/libslang2-2.2.2.tgz
pkg_create: can't stat `/usr/pkg/lib/slang/v2/modules/zlib-module.la'
pkg_create: lstat failed for file lib/slang/v2/modules/zlib-module.la: No such 
file or directory
*** Error code 2

Stop.

>How-To-Repeat:

>Fix: