Thanks Jorge and Mateusz!

That indeed does work. However, my project is obviously more complicated than this simple jamroot example and that is what I cannot get to work.  Here is another example:

DIR/Jamfile.jam:

exe main : file.c ;

jamroot.jam:

use-project /TEST : DIR ;

Commands that work:

bjam /TEST//main   <- Builds main.exe

cd DIR

bjam file.obj             <- Builds file.obj!  Which I did not know worked before

Command that don’t appear to work:

bjam /TEST//test.obj

bjam DIR/test.obj

bjam DIR//test.obj

which all get something like this:

notice: could not find main target DIR//file.obj

notice: assuming it is a name of file to create.

don't know how to make <e>DIR//file.obj

...found 1 target...

...can't find 1 target...

Thanks again,

Chris

From: boost-build-bounces@lists.boost.org [mailto:boost-build-bounces@lists.boost.org] On Behalf Of Jorge Suit Perez Ronda
Sent: Wednesday, April 11, 2012 10:25 AM
To: Boost.Build developer's and user's list
Subject: Re: [Boost-build] Compiling a single file

Hi, you can do

bjam file.obj

regards,

2012/4/11 Nogradi, Chris <Chris.Nogradi@garmin.com>

Thanks for the reply. I have read through the tutorial before but I still must be missing it.

Based on this:

exe main : file.c ;

I understand I can do:

bjam main

and it will build file.obj and main.exe

however, I want to only build file.obj from the command line.  How do I do that?

bjam file does not work unless I explicitly add a:

obj file : file.c ;
exe main : file ;

But this is not practical to do all over the place. I just want a quick command line option to build/rebuild only an obj from the command line:

Maybe something like:

bjam main..file ??

Thanks,

Chris

-----Original Message-----
From: boost-build-bounces@lists.boost.org [mailto:boost-build-bounces@lists.boost.org] On Behalf Of Mateusz Loskot
Sent: Wednesday, April 11, 2012 9:36 AM
To: Boost.Build developer's and user's list
Subject: Re: [Boost-build] Compiling a single file

On 11 April 2012 15:15, Nogradi, Chris <Chris.Nogradi@garmin.com> wrote:
> Does anyone compile a single file from a lib or exe? If so what would the
> bjam syntax be to compile main.c only for something like this:
>
> exe : main.c ;

http://www.boost.org/boost-build2/doc/html/bbv2/tutorial.html

or similar but with a bit more verbose/complete explanation

http://www.highscore.de/cpp/boostbuild/

Best regards,
--
Mateusz Loskot, http://mateusz.loskot.net
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