NO INET6 warning

[yaneurabeya at gmail.com]

On Sep 7, 2014, at 14:08, Glen Barber <gjb at FreeBSD.org> wrote:

> On Sun, Sep 07, 2014 at 02:03:35PM -0700, Sean Bruno wrote:
>> make[4]: "/home/sbruno/bsd/fbsd_head/sys/modules/if_gif/Makefile" line
>> 12: warning: Couldn't read shell's output for
>> "cat /home/sbruno/bsd/obj/mips/mips.mips/home/sbruno/bsd/fbsd_head/sys/WZR-300HP/opt_inet6.h"
>> 
>> 
>> Shouldn't this cat be done in a saner way?
>> 
> 
> This is done quite often throughout the tree, and bmake(1) does not like
> it when there is no value assigned from the '!=' expansion.
> 
> The fix I've seen most commonly done is to echo a newline after the
> assignment, such as:
> 
> Index: sys/modules/if_gif/Makefile
> ===================================================================
> --- sys/modules/if_gif/Makefile	(revision 271215)
> +++ sys/modules/if_gif/Makefile	(working copy)
> @@ -9,7 +9,7 @@ KMOD=	if_gif
> SRCS=	if_gif.c in_gif.c opt_inet.h opt_inet6.h opt_mrouting.h
> 
> .if defined(KERNBUILDDIR)
> -OPT_INET6!= cat ${KERNBUILDDIR}/opt_inet6.h
> +OPT_INET6!= cat ${KERNBUILDDIR}/opt_inet6.h; echo
> .if empty(OPT_INET6)
> MK_INET6_SUPPORT=no
> .endif

	Shouldn’t this all be removed and replaced with equivalent logic provided by kern.opts.mk?
Thanks!
-Garrett
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