Re: how to cross-build a single application ?

On Thu, Mar 01, 2012 at 12:24:13PM -0500, Alexander Kabaev wrote:
> On Thu, 1 Mar 2012 18:38:19 +0100
> Luigi Rizzo <rizzo@iet.unipi.it> wrote:
> 
> > What is the way to properly cross-build a single program
> > (after having gone throught the 'toolchain' and possibly
> > even a full 'buildworld') 
> > from the top-level directory of a FreeBSD source tree ?
> > 
> > right now i do something like
> > 
> > 	cd $SOURCE_ROOT
> > 	make MAKEOBJDIRPREFIX=/my_obj_tree TARGET=amd64 buildworld
> > 
> > but i seem to remember that there is a more efficient way
> > when you want to rebuild only one program or one subtree.
> > I think i have seen this question being answered from time to time
> > but i can't find how now.
> > 
> > any hints ?
> > 
> > cheers
> > luigi
> > 
> 
> Something like this should work:
> 
> cd src/
> make buildenv TARGET=...
> cd usr.bin/blah
> make

close:

	eval `make buildenvvars TARGET=... ` && cd usr.bin/blah && make

thanks!
luigi

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