RTEMS | Undefined reference to Stack Checker Reporter (#5497)

[SHIVAM DEOLANKAR (@D3athSkulll)]

SHIVAM DEOLANKAR commented on a discussion: https://gitlab.rtems.org/rtems/rtos/rtems/-/issues/5497#note_143588


check.c references Stack_checker_Reporter unconditionally, but the symbol is only defined in confdefs/extensions.h when CONFIGURE_STACK_CHECKER_ENABLED is set.

This causes undefined references when stack checker is not enabled, since librtemscpu always includes check.c.

I modified confdefs/extensions.h so that Stack_checker_Reporter is always defined. When stack checker is enabled, the behavior is unchanged. When it is disabled, the reporter defaults to rtems_stack_checker_reporter_quiet.

I also made the inclusion of <rtems/stackchk.h> unconditional so the type is always visible.

This keeps configuration policy inside confdefs, avoids weak symbols or spec-level changes, and preserves existing behavior.

-- 
View it on GitLab: https://gitlab.rtems.org/rtems/rtos/rtems/-/issues/5497#note_143588
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