[OE-core] [PATCH v2] bitbake.conf: Add sdl-config to HOSTTOOLS if using host SDL

[Patrick Ohly]

On Tue, 2017-06-27 at 20:24 +1000, Jonathan Liu wrote:
> Hi Patrick,
> 
> The original problem was that bitbake would print out the error:
> "libsdl-native is set to be ASSUME_PROVIDED but sdl-config can't be
> found in PATH. Please either install it, or configure qemu not to
> require sdl.", if "libsdl-native" was in ASSUME_PROVIDED even if the
> host has sdl-config in its PATH.
> 
> This occurred really early for a clean build and bitbake would bail
> out. The sanity check is in meta/classes/sanity.bbclass.

I've not hit that problem, probably because the sanity check was not run
again when I changed ASSUME_PROVIDED. I can reproduce it in a clean
build directory without conf/sanity_info.

I think extending HOSTTOOLS merely to satisfy sanity.bbclass is the
wrong solution to the problem. It makes sdl-config available to all
recipes, which is unnecessary and potentially introduces back host
contamination.

It is unnecessary because the qemu recipe has special code that enables
the use of the host SDL when told to do so via ASSUME_PROVIDED.

Can you come up with a better solution, probably by patching
sanity.bbclass?

-- 
Best Regards, Patrick Ohly

The content of this message is my personal opinion only and although
I am an employee of Intel, the statements I make here in no way
represent Intel's position on the issue, nor am I authorized to speak
on behalf of Intel on this matter.