problem with CmakeLists.txt conditional configuration

[champonthis]

I am just trying to following this guide https://docs.espressif.com/projects/esp ... figuration

But my settings are always ignored and building always results in else() case with "componentE"

my CmakeLists.txt of my compoonent to configure

Code: Select all

    set(priv_requires "componentA" "componentB" )
    
    if(CONFIG_OPTION_1)
         list(APPEND priv_requires "componentC") 
    elseif(CONFIG_OPTION_2)
        list(APPEND priv_requires "componentD")
    else()
        list(APPEND priv_requires "componentE")
    endif()
    
    idf_component_register(
        SRCS ...
        INCLUDE_DIRS ...
        PRIV_REQUIRES ${priv_requires}
    )

And I have a Kconfig.projbuild with

Code: Select all

    menu "Component Choose"
    	 
    	choice OPTION_CHOOSE
    		prompt "Choose device"
    		default OPTION_1
    	
    		config OPTION_1
    			bool "option1"
    	
    		config OPTION_2
    			bool "option2"
    	endchoice 
    
    endmenu

this is currently in my main folder, but I also put this in components "Kconfig.projbuild" and also just in "Kconfig" file all with same result

So what I am missing here. CONFIG_OPTION_1 and CONFIG_OPTION_2 always are ignored in my CmakeLists.txt

[boarchuz]

elseif(CONFIG_OPTION_1)

CONFIG_OPTION_2?

Full clean and rebuild?

What relevant definitions do you see in sdkconfig.h?

[champonthis]

This was just typo, because I adopted my code. Did try everything like fullclean etc. In sdkconfig.h options are set correct. They are also correct in code like if I do like #ifdef CONFIG_OPTION_1 etc. But like said, in the CmakeLists.txt it get not applied. Do I have to set somewhere to include the sdkconfig?

[champonthis]

I added now some output in CmakeLists.txt

Code: Select all

    
 set(priv_requires "componentA" "componentB")

if(CONFIG_DEMO_OPTION1)
    list(APPEND priv_requires "componentC")
elseif(CONFIG_DEMO_OPTION2)
    list(APPEND priv_requires "componentD")
endif()

message(STATUS "Option 1          : ${CONFIG_DEMO_OPTION1}")
message(STATUS "Option 2          : ${CONFIG_DEMO_OPTION2}")
message(STATUS "PRIV_REQUIRES     : ${priv_requires}") 

idf_component_register(
    SRCS 
    INCLUDE_DIRS "."
    PRIV_REQUIRES ${priv_requires}
)

on building I get the following

-- Building ESP-IDF components for target esp32
-- Option 1 :
-- Option 2 :
-- PRIV_REQUIRES : componentA;componentB
-- Project sdkconfig file ../sdkconfig
-- App "esp-ena-device" version: 45444bb-dirty
-- Adding linker script ../esp-idf/components/esp_rom/esp32/ld/esp32.rom.newlib-time.ld
-- Adding linker script ../esp-idf/components/esp_rom/esp32/ld/esp32.rom.api.ld
-- Adding linker script ../esp-idf/components/esp_rom/esp32/ld/esp32.rom.ld
-- Adding linker script ../esp-idf/components/esp_rom/esp32/ld/esp32.rom.libgcc.ld
-- Adding linker script ../esp-idf/components/esp_rom/esp32/ld/esp32.rom.newlib-data.ld
-- Adding linker script ../esp-idf/components/esp_rom/esp32/ld/esp32.rom.syscalls.ld
-- Adding linker script ../esp-idf/components/esp_rom/esp32/ld/esp32.rom.newlib-funcs.ld
-- Adding linker script ../build/esp-idf/esp32/esp32_out.ld
-- Adding linker script ../esp-idf/components/esp32/ld/esp32.project.ld.in
-- Adding linker script ../esp-idf/components/esp32/ld/esp32.peripherals.ld
-- Option 1 : y
-- Option 2 :
-- PRIV_REQUIRES : componentA;componentB;componentC

So the cmake is called without and with Sdkconfig. On building, only first, without is applied, so "componentC/D" is always missing.

How can I solve this?

[champonthis]

Okay, I found now the hint in documentation:

The values of REQUIRES and PRIV_REQUIRES should not depend on any configuration choices (CONFIG_xxx macros). This is because requirements are expanded before configuration is loaded. Other component variables (like include paths or source files) can depend on configuration choices.

[ricardoquesada]

ahhh.... thanks. I was triggering this bug and was not sure why it was not working for me.

So, what's the best way to solve this?

e.g: I want to depend on a certain component (e.g: "arduino") only if certain features gets enabled in Kconfig?

[FlorianR]

Hi,
I would like to know that too

[dernasherbrezon]

You can conditionally enable no-op sources. For example:

Code: Select all

set(wifi_srcs "")
if(CONFIG_AT_WIFI_ENABLED)
    list(APPEND wifi_srcs "at_wifi.c")
else()
    list(APPEND wifi_srcs "at_no_wifi.c")
endif()

esp-idf won't link not used components.

idf.py size-components can help with troubleshooting.