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modules: nanopb: Add custom target for generated header files

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Nanopb generates header files that need to be available before being
included. This isn't an issue for a target where the files were added
with zephyr_nanopb_sources. But if another target wants to include
these generated files we need a cmake dependency chain.

The nanopb_generated_headers custom target been added for this purpose.

Signed-off-by: Pieter De Gendt <pieter.degendt@basalte.be>
This commit is contained in:
Pieter De Gendt 2023-11-08 14:45:25 +01:00 committed by Fabio Baltieri
parent c3e2be4314
commit 4b1a8cb95b
1 changed files with 9 additions and 0 deletions
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9
modules/nanopb/nanopb.cmake
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@ -15,6 +15,8 @@ else()
message(STATUS "Found protoc: ${PROTOBUF_PROTOC_EXECUTABLE}")
endif()
add_custom_target(nanopb_generated_headers)
# Usage:
# list(APPEND CMAKE_MODULE_PATH ${ZEPHYR_BASE}/modules/nanopb)
# include(nanopb)
@ -31,4 +33,11 @@ function(zephyr_nanopb_sources target)
target_include_directories(${target} PUBLIC ${CMAKE_CURRENT_BINARY_DIR})
target_sources(${target} PRIVATE ${proto_srcs} ${proto_hdrs})
# Create unique target name for generated header list
string(MD5 unique_chars "${proto_hdrs}")
set(gen_target_name ${target}_proto_${unique_chars})
add_custom_target(${gen_target_name} DEPENDS ${proto_hdrs})
add_dependencies(nanopb_generated_headers ${gen_target_name})
endfunction()