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feat(cmakev2/build): track components linked to library

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There may be multiple libraries, each linking a different set of
components. Introduce a new library property, LIBRARY_COMPONENTS_LINKED,
to track the components linked with a specific library. This property
can be used, for example, by menuconfig to distinguish between included
and excluded components on a per-library or per-executable basis, or by
ldgen to identify linker scripts for the linked components.

Signed-off-by: Frantisek Hrbata <frantisek.hrbata@espressif.com>
This commit is contained in:
Frantisek Hrbata
2025-08-24 13:42:31 +02:00
parent b8b5717e42
commit 8439bc1fa2
1 changed files with 27 additions and 0 deletions
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27
tools/cmakev2/build.cmake
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@@ -228,6 +228,14 @@ endfunction()
``INTERFACE`` option and link component targets to it based on the component
names provided in the ``COMPONENTS`` option. If ``COMPONENTS`` option is not
set, link component targets of all discovered components.
List of library properties
:LIBRARY_COMPONENTS: List of component as specified by the ``COMPONENTS``
option.
:LIBRARY_COMPONENTS_LINKED: List of components linked to the library based
on recursive evaluations of the INTERFACE_LINK_LIBRARIES
and LINK_LIBRARIES target properties.
#]]
function(idf_build_library)
set(options)
@@ -271,4 +279,23 @@ function(idf_build_library)
idf_component_get_property(component_interface "${component_name}" COMPONENT_INTERFACE)
target_link_libraries("${ARG_INTERFACE}" INTERFACE "${component_interface}")
endforeach()
# Identify the components linked to the library by obtaining all targets
# that are transitively linked to the library and mapping these targets to
# components.
__get_target_dependencies(TARGET "${ARG_INTERFACE}" OUTPUT dependencies)
set(dep_component_interfaces)
foreach(dep IN LISTS dependencies)
__get_component_interface(COMPONENT "${dep}" OUTPUT component_interface)
if(NOT component_interface)
continue()
endif()
if("${component_interface}" IN_LIST dep_component_interfaces)
continue()
endif()
list(APPEND dep_component_interfaces "${component_interface}")
idf_component_get_property(component_name "${component_interface}" COMPONENT_NAME)
idf_library_set_property("${ARG_INTERFACE}" LIBRARY_COMPONENTS_LINKED "${component_name}" APPEND)
endforeach()
endfunction()