Add a substitute-path rule hint in the greeting message displayed before
launching dbuild. This helps developers debug coredumps by correctly mapping
source files.
Background:
- Scylla's Jenkins builds typically occur in /jenkins/workspace/scylla-${branch}/next
- When debugging locally, source paths need remapping to match the build environment
- The substitute-path rule allows GDB to locate source files correctly
This change improves developer experience by providing the appropriate path
substitution command directly in the prompt.
Signed-off-by: Kefu Chai <kefu.chai@scylladb.com>
Closesscylladb/scylladb#23038
8320d703cd