svn commit: r284650 - head/share/mk

[Warner Losh]

> On Jun 20, 2015, at 3:48 PM, Simon J. Gerraty <sjg at FreeBSD.org> wrote:
> 
> Author: sjg
> Date: Sat Jun 20 21:48:07 2015
> New Revision: 284650
> URL: https://svnweb.freebsd.org/changeset/base/284650
> 
> Log:
>  Deal with MAKEOBJDIRPREFIX
> 
>  MAKEOBJDIRPREFIX does not really fit our model.
>  Use it to set OBJROOT to about where user expects
>  and set MAKEOBJDIR to do what we want.
> 
> Modified:
>  head/share/mk/local.meta.sys.mk
> 
> Modified: head/share/mk/local.meta.sys.mk
> ==============================================================================
> --- head/share/mk/local.meta.sys.mk	Sat Jun 20 20:54:05 2015	(r284649)
> +++ head/share/mk/local.meta.sys.mk	Sat Jun 20 21:48:07 2015	(r284650)
> @@ -8,6 +8,18 @@
> MK_INSTALL_AS_USER= yes
> 
> .if empty(OBJROOT) || ${.MAKE.LEVEL} == 0
> +.if defined(MAKEOBJDIRPREFIX) && exists(${MAKEOBJDIRPREFIX})
> +.warning MAKEOBJDIRPREFIX not supported; setting MAKEOBJDIR...
> +# put things approximately where they want
> +OBJROOT:=${MAKEOBJDIRPREFIX}${SRCTOP:S,/src,,}/
> +# OBJTOP set below
> +MAKEOBJDIR=$${.CURDIR:S,$${SRCTOP},$${OBJTOP},}
> +MAKEOBJDIRPREFIX=
> +# export but do not track
> +.export-env MAKEOBJDIRPREFIX MAKEOBJDIR
> +# now for our own use
> +MAKEOBJDIR= ${.CURDIR:S,${SRCTOP},${OBJTOP},}
> +.endif
> .if !empty(SB)
> SB_OBJROOT ?= ${SB}/obj/
> # this is what we use below

MAKEOBJDIRPREFIX has been *THE* way to do things in FreeBSD since ~forever.
How does it not fit our model? It is our model. This change is ill advised.

Also, this change will generate about a billion warnings for a buildworld (one per makefile,
per tree traverse). That’s not acceptable.

Warner

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