esp-idf/tools/cmake/scripts/component_get_requirements.cmake
Renz Christian Bagaporo 297b2c5a39 cmake: evaluate component requirements in one go
!4452 simplified early expansion by using an early expansion script that
only does one thing: get the public and private requirements for each
component, albeit one by one. This was also dependent on parsing
the command output of the expansion script.  This commit makes it so that a list of all
components to be processed to passed to the expansion script, generating a cmake
file that sets each component requirements in one go.

This also makes sure that only components that registered themselves get
included in the final build list.
2019-06-11 18:09:26 +08:00

99 lines
3.8 KiB
CMake

include("${BUILD_PROPERTIES_FILE}")
include("${COMPONENT_PROPERTIES_FILE}")
function(idf_build_get_property var property)
cmake_parse_arguments(_ "GENERATOR_EXPRESSION" "" "" ${ARGN})
if(__GENERATOR_EXPRESSION)
message(FATAL_ERROR "Getting build property generator expression not
supported before idf_component_register().")
endif()
set(${var} ${${property}} PARENT_SCOPE)
endfunction()
idf_build_get_property(idf_path IDF_PATH)
include(${idf_path}/tools/cmake/utilities.cmake)
function(__component_get_property var component_target property)
set(_property __component_${component_target}_${property})
set(${var} ${${_property}} PARENT_SCOPE)
endfunction()
macro(require_idf_targets)
endmacro()
macro(idf_component_register)
set(options)
set(single_value)
set(multi_value SRCS SRC_DIRS EXCLUDE_SRCS
INCLUDE_DIRS PRIV_INCLUDE_DIRS LDFRAGMENTS REQUIRES
PRIV_REQUIRES REQUIRED_IDF_TARGETS EMBED_FILES EMBED_TXTFILES)
cmake_parse_arguments(_ "${options}" "${single_value}" "${multi_value}" "${ARGN}")
set(__component_requires "${__REQUIRES}")
set(__component_priv_requires "${__PRIV_REQUIRES}")
set(__component_registered 1)
return()
endmacro()
macro(register_component)
set(__component_requires "${COMPONENT_REQUIRES}")
set(__component_priv_requires "${COMPONENT_PRIV_REQUIRES}")
set(__component_registered 1)
return()
endmacro()
macro(register_config_only_component)
register_component()
endmacro()
idf_build_get_property(__common_reqs __COMPONENT_REQUIRES_COMMON)
idf_build_get_property(__component_targets __COMPONENT_TARGETS)
function(__component_get_requirements)
# This is in a function (separate variable context) so that variables declared
# and set by the included CMakeLists.txt does not bleed into the next inclusion.
# We are only interested in the public and private requirements of components
__component_get_property(__component_dir ${__component_target} COMPONENT_DIR)
include(${__component_dir}/CMakeLists.txt OPTIONAL)
spaces2list(__component_requires)
spaces2list(__component_priv_requires)
set(__component_requires "${__component_requires}" PARENT_SCOPE)
set(__component_priv_requires "${__component_priv_requires}" PARENT_SCOPE)
set(__component_registered ${__component_registered} PARENT_SCOPE)
endfunction()
set(CMAKE_BUILD_EARLY_EXPANSION 1)
foreach(__component_target ${__component_targets})
set(__component_requires "")
set(__component_priv_requires "")
set(__component_registered 0)
__component_get_requirements()
list(APPEND __component_requires "${__common_reqs}")
# Remove duplicates and the component itself from its requirements
__component_get_property(__component_alias ${__component_target} COMPONENT_ALIAS)
__component_get_property(__component_name ${__component_target} COMPONENT_NAME)
# Prevent component from linking to itself.
if(__component_requires)
list(REMOVE_DUPLICATES __component_requires)
list(REMOVE_ITEM __component_requires ${__component_alias} ${__component_name})
endif()
if(__component_requires)
list(REMOVE_DUPLICATES __component_priv_requires)
list(REMOVE_ITEM __component_priv_requires ${__component_alias} ${__component_name})
endif()
set(__contents
"__component_set_property(${__component_target} REQUIRES \"${__component_requires}\")
__component_set_property(${__component_target} PRIV_REQUIRES \"${__component_priv_requires}\")
__component_set_property(${__component_target} __COMPONENT_REGISTERED ${__component_registered})"
)
set(__component_requires_contents "${__component_requires_contents}\n${__contents}")
endforeach()
file(WRITE ${COMPONENT_REQUIRES_FILE} "${__component_requires_contents}")