unkown CMake command idf_blahblah

xXWesleyXx_eckz · June 10, 2022, 1:04pm

Hello Everyone.

This is my first post on this forum so please be patient if it’s not formulated the way ya’ll are used to, please tell me if you’re missing info and I will try to deliver.

First off I if anyone has a simple website with a proper tutorial on all the VScode/IDF/CMake witchcraft, one that still works, if such a tutorial exists, then I would love a link.

My problem is this:

CMake Error at C:/Users/Wesley/esp/esp-idf/components/freertos/CMakeLists.txt:7 (idf_build_get_property):
Unknown CMake command “idf_build_get_property”.

i’ve been googling and following every tutorial out there but either i’m stupid or every tutorial on the internet is outdated, either way they don’t work.
So now that we’ve established that i’m most likely stupid, how the F do I get idf_whatever commands to work in CMakeLists?

the file in question looks like this:(standard esp-idf FreeRTOS CMakeLists.txt)

if(BOOTLOADER_BUILD)
    # bootloader only needs FreeRTOS for config, not for anything else
    idf_component_register()
    return()
endif()
idf_build_get_property(target IDF_TARGET)
if(CONFIG_FREERTOS_SMP)
    if(CONFIG_IDF_TARGET_ARCH_XTENSA)
        set(srcs
            "FreeRTOS-Kernel-SMP/portable/xtensa/port.c"
            "FreeRTOS-Kernel-SMP/portable/xtensa/portasm.S"
            "FreeRTOS-Kernel-SMP/portable/xtensa/xtensa_context.S"
            "FreeRTOS-Kernel-SMP/portable/xtensa/xtensa_init.c"
            "FreeRTOS-Kernel-SMP/portable/xtensa/xtensa_overlay_os_hook.c"
            "FreeRTOS-Kernel-SMP/portable/xtensa/xtensa_vector_defaults.S"
            "FreeRTOS-Kernel-SMP/portable/xtensa/xtensa_vectors.S")
        set(include_dirs
            "FreeRTOS-Kernel-SMP/include" # FreeRTOS headers via #include "freertos/xxx.h"
            "esp_additions/include/freertos" # For config via #include "FreeRTOSConfig.h"
            "FreeRTOS-Kernel-SMP/portable/xtensa/include" # Xtensa/Arch Config headers via #include "freertos/xxx.h"
            "esp_additions/include" # For #include "freertos/task_snapshot.h" and #include "freertos/FreeRTOSConfig.h"
            "FreeRTOS-Kernel-SMP/portable/xtensa/include/freertos") # Xtensa headers via #include "xxx.h"
        set(private_include_dirs
            "FreeRTOS-Kernel-SMP/portable/xtensa/include/freertos"
            "FreeRTOS-Kernel-SMP/portable/xtensa"
            .)
    endif()
    list(APPEND srcs
        "FreeRTOS-Kernel-SMP/croutine.c"
        "FreeRTOS-Kernel-SMP/event_groups.c"
        "FreeRTOS-Kernel-SMP/list.c"
        "FreeRTOS-Kernel-SMP/queue.c"
        "FreeRTOS-Kernel-SMP/tasks.c"
        "FreeRTOS-Kernel-SMP/timers.c"
        "FreeRTOS-Kernel-SMP/stream_buffer.c"
        "FreeRTOS-openocd.c"
        )
    list(APPEND private_include_dirs
        "FreeRTOS-Kernel-SMP/include/freertos"   # FreeRTOS headers via #include "xxx.h"
        "esp_additions/private_include")    # For include "freertos_tasks_c_additions.h"
    if(CONFIG_ESP32_IRAM_AS_8BIT_ACCESSIBLE_MEMORY)
        list(APPEND srcs "FreeRTOS-Kernel-SMP/portable/xtensa/xtensa_loadstore_handler.S")
    endif()
else()
    if(CONFIG_IDF_TARGET_ARCH_XTENSA)
        set(srcs
            "FreeRTOS-Kernel/portable/xtensa/port.c"
            "FreeRTOS-Kernel/portable/xtensa/portasm.S"
            "FreeRTOS-Kernel/portable/xtensa/xtensa_context.S"
            "FreeRTOS-Kernel/portable/xtensa/xtensa_init.c"
            "FreeRTOS-Kernel/portable/xtensa/xtensa_overlay_os_hook.c"
            "FreeRTOS-Kernel/portable/xtensa/xtensa_vector_defaults.S"
            "FreeRTOS-Kernel/portable/xtensa/xtensa_vectors.S")
        set(include_dirs
            FreeRTOS-Kernel/include
            esp_additions/include/freertos          # For files with #include "FreeRTOSConfig.h"
            FreeRTOS-Kernel/portable/xtensa/include # For arch-specific FreeRTOSConfig_arch.h in portable/<arch>/include
            esp_additions/include)                  # For files with #include "freertos/FreeRTOSConfig.h"
        set(private_include_dirs
            FreeRTOS-Kernel/portable/xtensa/include/freertos
            FreeRTOS-Kernel/portable/xtensa
            FreeRTOS-Kernel/portable/priv_include
            .)
    elseif(CONFIG_IDF_TARGET_ARCH_RISCV)
        set(srcs
            "FreeRTOS-Kernel/portable/riscv/port.c"
            "FreeRTOS-Kernel/portable/riscv/portasm.S")
        set(include_dirs
            FreeRTOS-Kernel/include
            esp_additions/include/freertos          # For files with #include "FreeRTOSConfig.h"
            FreeRTOS-Kernel/portable/riscv/include  # For arch-specific FreeRTOSConfig_arch.h in portable/<arch>/include
            esp_additions/include)                  # For files with #include "freertos/FreeRTOSConfig.h"
        set(private_include_dirs
            FreeRTOS-Kernel/portable/riscv/include/freertos
            FreeRTOS-Kernel/portable/riscv
            FreeRTOS-Kernel/portable/priv_include
            .)
    endif()
    list(APPEND srcs
        "FreeRTOS-Kernel/portable/port_common.c"
        "FreeRTOS-Kernel/portable/port_systick.c"
        "FreeRTOS-Kernel/croutine.c"
        "FreeRTOS-Kernel/event_groups.c"
        "FreeRTOS-Kernel/list.c"
        "FreeRTOS-Kernel/queue.c"
        "FreeRTOS-Kernel/tasks.c"
        "FreeRTOS-Kernel/timers.c"
        "FreeRTOS-Kernel/stream_buffer.c"
        "FreeRTOS-openocd.c"
        "esp_additions/freertos_v8_compat.c")
    list(APPEND private_include_dirs
        "FreeRTOS-Kernel/include/freertos"
        "esp_additions/private_include")    # For include "freertos_tasks_c_additions.h"
    if(CONFIG_ESP32_IRAM_AS_8BIT_ACCESSIBLE_MEMORY)
        list(APPEND srcs "FreeRTOS-Kernel/portable/xtensa/xtensa_loadstore_handler.S")
    endif()
endif()
idf_component_register(SRCS "${srcs}"
                    INCLUDE_DIRS ${include_dirs}
                    PRIV_INCLUDE_DIRS  ${private_include_dirs}
                    LDFRAGMENTS linker.lf
                    PRIV_REQUIRES soc esp_pm)
idf_component_get_property(COMPONENT_DIR freertos COMPONENT_DIR)
idf_component_set_property(freertos ORIG_INCLUDE_PATH "${COMPONENT_DIR}/include/freertos/")
if(CONFIG_FREERTOS_DEBUG_OCDAWARE)
    target_link_libraries(${COMPONENT_LIB} INTERFACE "-Wl,--undefined=uxTopUsedPriority") #will be removed
    target_link_libraries(${COMPONENT_LIB} INTERFACE "-Wl,--undefined=FreeRTOS_openocd_params")
    idf_build_set_property(COMPILE_OPTIONS "-DconfigENABLE_FREERTOS_DEBUG_OCDAWARE=1" APPEND)
endif()
set_source_files_properties(
    tasks.c
    event_groups.c
    timers.c
    queue.c
    stream_buffer.c
    PROPERTIES COMPILE_DEFINITIONS
    _ESP_FREERTOS_INTERNAL
    )
# The freertos component provides the `start_app` and `start_app_other_cores`
# if it is included in the build. It then calls `app_main`
# from the main task created, which must be provided by the user.
# Like for `start_app` and `start_app_other_cores`,
# we can't establish dependency on what we don't yet know, so we force the
# linker to not drop this symbol.
target_link_libraries(${COMPONENT_LIB} INTERFACE "-u app_main")
if(CONFIG_APPTRACE_SV_ENABLE)
    # FreeRTOS headers have a dependency on app_trace when SystemView tracing is enabled
    idf_component_optional_requires(PUBLIC app_trace)
elseif(CONFIG_APPTRACE_ENABLE)
    # [refactor-todo]: port.c has a dependency on esp_apptrace_init, for running it on APP CPU.
    # this should be resolved when link-time registration of startup functions is added.
    idf_component_optional_requires(PRIVATE app_trace)
endif()
if(CONFIG_ESP_SYSTEM_GDBSTUB_RUNTIME)
    # [refactor-todo]: port.c esp_startup_start_app_common() calls esp_gdbstub_init()
    idf_component_optional_requires(PRIVATE esp_gdbstub)
endif()
if(CONFIG_FREERTOS_RUN_TIME_STATS_USING_ESP_TIMER)
    # [refactor-todo]: esp_timer is required by FreeRTOS when we use esp_timer_get_time() to do profiling
    # Introduce a port wrapper function to avoid including esp_timer.h into the public header
    idf_component_optional_requires(PUBLIC esp_timer)
endif()

Regards,

Wesley

ben.boeckel · June 10, 2022, 2:02pm

It looks like you’re missing a find_package(IDF) or some other include() of an IDF macro-providing file. The commands need to be provided by something and I don’t see what might be doing that here.

xXWesleyXx_eckz · June 10, 2022, 2:20pm

That was my idea too, question is, which file(s) provide these idf_ commands?

ben.boeckel · June 10, 2022, 2:26pm

That’s a job for whatever project provides them to document (FreeRTOS by a quick search). I’ve never used it myself, so I’ve no experience here.

xXWesleyXx_eckz · June 10, 2022, 2:44pm

I doubt that the problem lies in the FreeRTOS supplied file.
CMake trips over the function call inside as CMakeLists file so pretty sure it would be a CMake or ESP-IDF problem.

I have found a file with the function idf_build_get_property in ~\esp\esp-idf\tools\cmake\build.cmake
So i have the function, now to figure out why CMake doesn’t use it and similar functions.

ben.boeckel · June 10, 2022, 2:47pm

Whatever code wants to use it needs to include the function. This is just like a C source file using fopen() without #include <stdio.h>: it is the developer’s job to make sure that the required files for function declarations are included. CMake can’t read your mind.

xXWesleyXx_eckz · June 13, 2022, 8:03am

i went and put “include($ENV{IDF_PATH}/tools/cmake/build.cmake)” in the file and now a get a different error thanks for helping.