[PATCH] build: Add RTEMS_QUALIFIED

[Sebastian Huber]

On 03.11.23 15:08, Joel Sherrill wrote:
> 
> On Fri, Nov 3, 2023 at 3:58 AM Sebastian Huber 
> <sebastian.huber at embedded-brains.de 
> <mailto:sebastian.huber at embedded-brains.de>> wrote:
> 
>     The goal of the RTEMS pre-qualification activity #3701 is a specified
>     and validated subset of RTEMS.  For users of the pre-qualified subset of
>     RTEMS it is important to not accidentally use not pre-qualified
>     features.  One way to achieve this, is to build only the sources of the
>     pre-qualified feature set. This customized build is enabled by the new
>     build configuration option RTEMS_QUALIFIED.  If it is enabled, then only
>     the pre-qualified subset of RTEMS is built and installed.
> 
>     Building with RTEMS_QUALIFIED enable is currently only supported for the
>     sparc/leon3 BSP family.  To support an RTEMS_QUALIFIED enabled build,
>     changes in the CPU port and the BSP are required to only use features of
>     the pre-qualified feature set.
> 
> 
> Where is this documented?

You mean a documentation of what needs to be done to create 
pre-qualified BSP? I don't have it available yet. A good place to add 
this would be the how-to section in the RTEMS Software Engineering manual.

> 
> This is a very large patch. Are you assuming that if "not qualified" is 
> specified,
> then it is in the qualified set?

No, the logic is reversed. Everything is built by default. Some parts 
are only enabled if RTEMS_QUALIFIED is not enabled, for example 
(spec/build/cpukit/objextra.yml):

enabled-by:
   not: RTEMS_QUALIFIED

> 
> Nothing below here. It is just too large to understand the pattern you are
> attempting to apply and I cannot figure out if it is right or not. I 
> understand
> tailoring to a qualified subset but not the details of what yaml/rtems 
> configuration
> files is attempting to do. I can't tell if the changes are right or not.

The patch set introduces a couple of new files with specific patterns:

* obj*extra.yml files for objects which are only available if 
RTEMS_QUALIFIED is not enabled

* obj*qual.yml files for objects which are only available if 
RTEMS_QUALIFIED is enabled

Several libraries are now only available if RTEMS_QUALIFIED is not enabled.

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