OVMS3-idf/tools/cmake/component_utils.cmake

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CMake
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function(debug message)
if(DEBUG)
message(STATUS "${message}")
endif()
endfunction()
# Given a component name (find_name) and a list of component paths (component_paths),
# return the path to the component in 'variable'
#
# Fatal error is printed if the component is not found.
function(find_component_path find_name components component_paths variable)
list(FIND components ${find_name} idx)
if(NOT idx EQUAL -1)
list(GET component_paths ${idx} path)
set("${variable}" "${path}" PARENT_SCOPE)
return()
else()
endif()
# TODO: find a way to print the dependency chain that lead to this not-found component
message(FATAL_ERROR "Required component ${find_name} is not found in any of the provided COMPONENT_DIRS")
endfunction()
# components_find_all: Search 'component_dirs' for components and return them
# as a list of names in 'component_names' and a list of full paths in
# 'component_paths'
#
# component_paths contains only unique component names. Directories
# earlier in the component_dirs list take precedence.
function(components_find_all component_dirs component_paths component_names test_component_names)
# component_dirs entries can be files or lists of files
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set(_paths "")
set(_names "")
set(_test_names "")
# start by expanding the component_dirs list with all subdirectories
foreach(dir ${component_dirs})
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if(EXISTS ${dir}/CMakeLists.txt)
get_filename_component(_path "${dir}" ABSOLUTE)
get_filename_component(_name "${_path}" NAME)
if(NOT name IN_LIST names)
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list(APPEND _names "${_name}")
list(APPEND _paths "${_path}")
endif()
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if(EXISTS "${_path}/test/CMakeLists.txt")
list(APPEND _test_names "${_name}")
endif()
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else()
if(EXISTS ${dir}/component.mk)
get_filename_component(legacy_component "${legacy_component}" DIRECTORY)
message(WARNING "Component ${legacy_component} contains old-style component.mk but no CMakeLists.txt. "
"Component will be skipped.")
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else()
if(NOT __recursing) # recurse only once
file(GLOB subdirs LIST_DIRECTORIES true "${dir}/*")
set(__recursing 1)
components_find_all("${subdirs}" __paths __names __test_names)
set(__recursing 0)
if(__paths)
list(APPEND _paths "${__paths}")
list(APPEND _names "${__names}")
list(APPEND _test_names "${__test_names}")
endif()
endif()
endif()
endif()
endforeach()
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set(${test_component_names} "${_test_names}" PARENT_SCOPE)
set(${component_paths} "${_paths}" PARENT_SCOPE)
set(${component_names} "${_names}" PARENT_SCOPE)
endfunction()