pkg/41709: emulators/compat40 cannot build on NetBSD 4 systems

[kre%munnari.OZ.AU@localhost]

>Number:         41709
>Category:       pkg
>Synopsis:       emulators/compat40 cannot build on NetBSD 4 systems
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    pkg-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon Jul 13 10:50:00 +0000 2009
>Originator:     Robert Elz
>Release:        NetBSD 4.0_STABLE
>Organization:
        Prince of Songkla University
>Environment:
System: NetBSD jade.coe.psu.ac.th 4.0_STABLE NetBSD 4.0_STABLE 
(JADE-1.696-20080517) #9: Fri May 23 18:55:13 ICT 2008 
kre%jade.coe.psu.ac.th@localhost:/usr/obj/4/kernels/JADE i386
Architecture: i386
Machine: i386
>Description:
        The compatNM packages are all defined so that they refuse to
        build on system version NM itself (N.M really) - and that's
        wrong, only earlier versions should be rejected.

        I build binary packages on a NetBSD 4.0 system (which isn't
        changing any time soon as with a 5.0 kernel, I have processes
        that simply hang).   That means I can only build NetBSD 4.0
        (or earlier) packages, wven using pkg_comp and libkver (the
        running kernel, at least, needs to be at least as high a
        version as is being emulated by libkver or things are likely to fail).

        I want to run the packages I build on other systems (that's
        a reason for binary packages, not the only reason, but one of them)
        and some of those systems are running NetBSD 5 or -current (or
        something that was -current and is > 5.0).   For that, I need
        compat40 installed.   But I can't build compat40 because I am
        only running a NetBSD 4 (based - see the Release and Environment PR
        fields) kernel, an environment in which compat40 refuses to
        build.

        This has been discussed before on tech-pkg, with no disagreement
        to changing the pkg to allow it to be built on NetBSD 4.0 as
        well (there isn't, and logically cannot be, any problem beinging
        compat40 on NetBSD 4.0, etc).   But nothing changed, so I assume
        the request fell throuh a crack.   Hence this PR ...

>How-To-Repeat:
        Blindingly obvious...

>Fix:
        Change:

ONLY_FOR_PLATFORM=      NetBSD-4.99.*-* NetBSD-[5-9]*-* NetBSD-[1-9][0-9]*-*

        to

ONLY_FOR_PLATFORM=      NetBSD-[4-9]*-* NetBSD-[1-9][0-9]*-*

        There's no need to be able to build compat40 on older NetBSD's, 4.0
        packages in general can't be built there, even if this one
        conceivably could (and as there's no point doing do, I never
        tested that).

        This PR relates only to emulators/compat40 - all the older ones (that
        I looked at anyway) have the same problem, I just never noticed it
        before, as until now my build system hadn't ever been an older NetBSD
        version than the target systems.   There's no longer any need to fix
        any of the others though, as supporting building on NetBSD 3.0
        (or older) is no longer expected, so being unable to build compat30
        on 3.0 is no longer relevant.

        There's also not yet an emulators/compat50 to have a similar
        problem which would need to be fixed.  (There probably should be).

        While fixing this, whoever does it might also want to look at this
        comment in compat40/Makefile ...

# XXX Until NetBSD 5.0 is released, we fetch the distfiles into a date-specific
# XXX subdirectory where the date corresponds to the build of HEAD against
# XXX which these compat40 packages were generated.

        and notice that the "until" passed months ago...