Re: MKREPRO: what variable contains the actual obj directory?

[Iain Hibbert <plunky%ogmig.net@localhost>]

On Thu, 7 Jan 2016, Thomas Klausner wrote:

> On Thu, Jan 07, 2016 at 04:35:44PM +0000, Iain Hibbert wrote:
> > On Thu, 7 Jan 2016, Thomas Klausner wrote:
> > 
> > > For reproducible builds, the binaries should be the same independent
> > > of the paths where the source or object directories live.
> > > 
> > > There are patches available for gcc to fix the paths (i.e., replace
> > > the obj directory that is actually used in a build with a fixed
> > > string, e.g. /usr/obj).
> > > 
> > > However, with the gazillion options we have in share/mk for choosing
> > > object directories, I don't know what variable contains the actual
> > > object directory that is used during a build.
> > > 
> > > Can someone shed a light on this?
> > 
> > Ah, its somewhat complex :)
> > 
> > see section of bsd.obj.mk in bsd.README
> 
> Yes, I saw that. That's why I'm asking (and hoping) that there is a
> variable which gives me the final path to foo.o. Is there such a thing?

perhaps .OBJDIR ?

% cd src/usr.bin/make
% make -V .OBJDIR
/home/plunky/src/usr.bin/make
% mkdir obj
% make -V .OBJDIR
/home/plunky/src/usr.bin/make/obj
% mkdir obj.i386
% make -V .OBJDIR
/home/plunky/src/usr.bin/make/obj.i386

iain