[build2] How to have temporary files in /tmp

[Boris Kolpackov]

Heck Fy <shitpoet at gmail.com> writes:

> I try to create minimalist setup with build2 without additional directories
> and files - just one buildfile (like one could have with make and
> Makefile).

While this setup is supported (called 'simple project'), it has so many
restrictions and limitations that it's hardly usable for anything but,
well, really simple projects.

More specifically, such a project cannot use build system modules that
require bootstrapping. This includes test, install, dist, and config
modules. Without the config module there is no support for persistent
configurations.


> Currently I can compile my project using just single buildfile but all
> intermediate files (.o, .d, .ii, .pcm) are placed in the same folder.
> 
> How to configure build2 to place this files in another folder?

If such a simple project is in directory hello/, then you can do an
out-of-source build like this:

$ ls
hello/

$ b hello/@hello-out/

$ ls
hello/
hello-out/

But because there is no persistent configurations, you cannot "configure"
it, you have to keep specifying the output directory explicitly.


> And if possible output binary file back to the project folder?

This is possible (see forwarded configurations in b(1)) but again not
with simple projects.


> And do all this without creation of additional configuration files
> or directories besides the single buildfile I already have in my
> project folder.

Those additional files are there for good reasons. My suggestion is,
don't fight it, just create a canonical project with bdep-new(1) and
go with the flow. You will have a much better time ;-).