mirror of https://github.com/ARMmbed/mbed-os.git
70 lines
3.0 KiB
CMake
70 lines
3.0 KiB
CMake
# Copyright (c) 2021 ARM Limited. All rights reserved.
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# SPDX-License-Identifier: Apache-2.0
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# This script provides mbed_create_distro(), a function that lets you compile multiple
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# apps that use Mbed OS without waiting for Mbed OS to build multiple times.
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# You can use it like this:
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# mbed_create_distro(mbed_for_my_app mbed-os mbed-storage-kvstore mbed-storage-filesystem)
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#
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# add_executable(myapp1 MyApp1.cpp)
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# target_link_libraries(myapp1 PRIVATE mbed_for_my_app)
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# mbed_set_post_build(myapp1)
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#
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# add_executable(myapp2 MyApp2.cpp)
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# target_link_libraries(myapp2 PRIVATE mbed_for_my_app)
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# mbed_set_post_build(myapp2)
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#
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# Both myapp1 and myapp2 will act like they were linked to mbed-os, mbed-storage-kvstore,
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# and mbed-storage-filesystem. Note that if you actually did target_link_libraries(myapp1 PRIVATE mbed-os
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# mbed-storage-kvstore mbed-storage-filesystem), it would compile a new version of the Mbed OS source
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# files for each target. However, using mbed_create_distro(), Mbed OS will only be compiled once.
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# Append the value of PROPERTY from SOURCE to the value of PROPERTY on DESTINATION
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function(copy_append_property PROPERTY SOURCE DESTINATION)
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get_property(PROP_IS_DEFINED TARGET ${SOURCE} PROPERTY ${PROPERTY} SET)
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if(PROP_IS_DEFINED)
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get_property(PROP_VALUE TARGET ${SOURCE} PROPERTY ${PROPERTY})
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set_property(TARGET ${DESTINATION} APPEND PROPERTY ${PROPERTY} "${PROP_VALUE}")
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endif()
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endfunction(copy_append_property)
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# Create a "distribution" of Mbed OS containing the base Mbed and certain modules.
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# This distribution only needs to be compiled once and can be referenced in an arbitrary amount of targets.
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function(mbed_create_distro NAME) # ARGN: modules...
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add_library(${NAME} OBJECT)
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mbed_configure_app_target(${NAME})
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# First link as private dependencies
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target_link_libraries(${NAME} PRIVATE ${ARGN})
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# Now copy include dirs, compile defs, and compile options (but NOT interface source files) over
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# to the distribution target so they will be passed into things that link to it.
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# To do this, we need to recursively traverse the tree of dependencies.
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set(REMAINING_MODULES ${ARGN})
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set(COMPLETED_MODULES ${ARGN})
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while(NOT "${REMAINING_MODULES}" STREQUAL "")
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list(GET REMAINING_MODULES 0 CURR_MODULE)
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copy_append_property(INTERFACE_COMPILE_DEFINITIONS ${CURR_MODULE} ${NAME})
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copy_append_property(INTERFACE_COMPILE_OPTIONS ${CURR_MODULE} ${NAME})
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copy_append_property(INTERFACE_INCLUDE_DIRECTORIES ${CURR_MODULE} ${NAME})
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copy_append_property(INTERFACE_LINK_OPTIONS ${CURR_MODULE} ${NAME})
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list(REMOVE_AT REMAINING_MODULES 0)
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list(APPEND COMPLETED_MODULES ${CURR_MODULE})
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# find sub-modules of this module
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get_property(SUBMODULES TARGET ${CURR_MODULE} PROPERTY INTERFACE_LINK_LIBRARIES)
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foreach(SUBMODULE ${SUBMODULES})
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if(NOT "${SUBMODULE}" MATCHES "::@") # remove CMake internal CMAKE_DIRECTORY_ID_SEP markers
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if(NOT ${SUBMODULE} IN_LIST COMPLETED_MODULES)
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list(APPEND REMAINING_MODULES ${SUBMODULE})
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endif()
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endif()
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endforeach()
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endwhile()
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endfunction(mbed_create_distro) |