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cmake: snippets: Add snippet help message

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Adds a help message which gives details on a common issue with
snippets where the roots are not known or a snippet is applied
to multiple images

Signed-off-by: Jamie McCrae <jamie.mccrae@nordicsemi.no>
This commit is contained in:
Jamie McCrae 2025-02-10 09:39:12 +00:00 • committed by Benjamin Cabé
commit 0201683adb
1 changed files with 14 additions and 1 deletions
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15
cmake/modules/snippets.cmake
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@ -94,7 +94,20 @@ function(zephyr_process_snippets)
ERROR_VARIABLE output
RESULT_VARIABLE ret)
if(${ret})
message(FATAL_ERROR "${output}")
list(JOIN SNIPPET_ROOT "\n " snippet_root_paths)
set(snippet_root_paths "\n ${snippet_root_paths}")
if(SYSBUILD)
zephyr_get(SYSBUILD_NAME SYSBUILD GLOBAL)
set(extra_output "Snippet roots for image ${SYSBUILD_NAME}:${snippet_root_paths}\n"
"Note that snippets will be applied to all images unless prefixed with the image name "
"e.g. `-D${SYSBUILD_NAME}_SNIPPET=...`, local snippet roots for one image are not set "
"for other images in a build")
else()
set(extra_output "Snippet roots for application:${snippet_root_paths}")
endif()
message(FATAL_ERROR "${output}" ${extra_output})
endif()
include(${snippets_generated})