pkg/29029: bootstrap should USE_BUILTIN.dl=yes in mk.conf for Interix

[joff%embeddedARM.com@localhost]

>Number:         29029
>Category:       pkg
>Synopsis:       bootstrap should USE_BUILTIN.dl=yes in mk.conf for Interix
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    pkg-manager
>State:          open
>Class:          change-request
>Submitter-Id:   net
>Arrival-Date:   Fri Jan 21 00:32:00 +0000 2005
>Originator:     Jesse Off
>Release:        pkgsrc 2004Q4
>Organization:
        Technologic Systems
>Environment:
        Interix 3.5
Architecture: i386
Machine: i386
>Description:
        Several packages fail to build with a message 
        "Package X requires dlopen()".  Interix does have dlopen(), just not
        in a header file /usr/include/dlopen.h.  
>How-To-Repeat:
        Try building perl on Interix
>Fix:
        Add a line "USE_BUILTIN.dl=yes" to the example mk.conf during pkgsrc
        bootstrap or extend detection of builtin dlopen() to a method more
        resilent than simply checking for the presence of a /usr/include/dlfcn.h