how to test for linux base version? (googleearth)

[Boris Samorodov]

Juergen Lock <nox at jelal.kn-bremen.de> writes:

> I just got reminded to add a linux base version check to astro/google-earth
> (It now needs recent linux libstdc++.so.6 with GLIBCXX_3.4.9 that only
> is in f9 or f10, you can do

First of, I'd recommend leaving f9 alone (I'm going to deprecate all
linux base ports except fc4 and f10 soon).

> 	objdump -T /compat/linux/usr/lib/libstdc++.so.6 |grep 'ABS.*GLIBCXX'
> to check) - and was wondering how to best check for that in a port.
> This is what I came up with so far:
>
> Index: Makefile
> ===================================================================
> RCS file: /home/pcvs/ports/astro/google-earth/Makefile,v
> retrieving revision 1.35
> diff -u -p -r1.35 Makefile
> --- Makefile	24 Sep 2009 21:01:36 -0000	1.35
> +++ Makefile	17 Oct 2009 15:32:22 -0000
> @@ -38,6 +38,14 @@ RUN_DEPENDS+=	${LINUXBASE}/usr/lib/libGL
>  USE_LINUX_APPS+=	dri
>  .endif
>  
> +.if (${OSVERSION} < 800076 && \
> +	 !defined(OVERRIDE_LINUX_BASE_PORT)) || \
> +	(defined(OVERRIDE_LINUX_BASE_PORT) && \
> +	 !(${OVERRIDE_LINUX_BASE_PORT} == f10) || \
> +	   ${OVERRIDE_LINUX_BASE_PORT} == f9)
> +IGNORE=		needs at least f9 Linux base
> +.endif
> +
>  do-extract:
>  	@${MKDIR} ${WRKSRC}
>  	@${CP} ${DISTDIR}/${DIST_SUBDIR}/${DISTFILES} ${WRKSRC}
>
>  Anyone have a better idea? :)

I'm not sure if it's better but just an other idea:
-----
.if ${OSVERSION}<7000XX  /*** XX should be find out ***/
IGNORE FreeBSD>=7.X is needed with Linux emulation 2.6.x.
.elif ${OSVERSION}<800076 && \
        ! defined (OVERRIDE_LINUX_NONBASE_PORTS) ||
        ! (${OVERRIDE_LINUX_NONBASE_PORTS} == f10)
IGNORE= you need to use non-default linux ports (define OVERRIDE_LINUX_BASE_PORT=f10 and OVERRIDE_LINUX_NONBASE_PORTS=f10)
.endif
-----

This check is not strict either. The thing is that both BASE and NONBASE
variables should be defined and have f10 value for OSVERSION<800076.

I have an item at my TODO list to switch to using USE_LINUX=f10[+] or
similar but it's not the highest priority and ENOTIME now...

-- 
WBR, bsam