pkg/32622: apache2 build sometimes depends on pkg-config

[collver%peak.org@localhost]

>Number:         32622
>Category:       pkg
>Synopsis:       apache2 build sometimes depends on pkg-config
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    pkg-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Jan 25 06:35:00 +0000 2006
>Originator:     collver%peak.org@localhost
>Release:        NetBSD 3.0
>Organization:
>Environment:
System: NetBSD sanctum 3.0 NetBSD 3.0 (SANCTUM) #0: Sun Dec 25 11:35:26 PST 
2005 ben@sanctum:/home/ben/src/netbsd/3.0/src/sys/arch/i386/compile/SANCTUM i386
Architecture: i386
Machine: i386
>Description:
I am trying to build apache2 on some Linux platform, using
PREFER.openssl=pkgsrc.  It breaks thanks to line 10896 of
pkgsrc/www/apache2/work/httpd-*/configure:
  ap_ssltk_libdep=`pkg-config --libs openssl`

pkgsrc has not installed pkg-config, so this runs the system pkg-config
and lists the wrong libraries.
>How-To-Repeat:
>Fix:
Add a build-time dependency on pkg-config.
Patch configure script to run PREFIX/bin/pkg-config.