Cmake fails with a KeyError: 'nameOnDisk' in espidf.py

I’m attempting to include an external cmake project into my platformio wesp32 project being built in VS Code’s platformio system. There are currently no errors without attempting to include the external cmake project. However, I get the error when I build with the following configuration. I have already deleted my entire .platformio directory under my user directory and let platformio rebuild everything there and done multiple cleans and rebuilds to no effect. I am struggling to find any help online about this particular issue already hence here I am. The log output isn’t terribly helpful to me though I am not familiar with the files in the call stack.

Anyone have ideas for where I should go from here? I’m a bit newer to the platformio framework.

platformio.ini:

[platformio]
default_envs = esp-wesp32

[env:esp-wesp32]
platform = espressif32
board = wesp32
framework = espidf
build_flags = -DBOARD_WESP32
;upload_port = /dev/cu.usbserial-20
;monitor_port = /dev/cu.usbserial-20
monitor_speed = 115200

[env:esp-espressif-dev]
platform = espressif32
board = esp-wrover-kit
framework = espidf
build_flags = -DBOARD_ESPRESSIF_DEV
;upload_port = /dev/cu.usbserial-201
;monitor_port = /dev/cu.usbserial-201
monitor_speed = 115200

CMakeLists.txt at root of project dir:

cmake_minimum_required(VERSION 3.16.0)
include($ENV{IDF_PATH}/tools/cmake/project.cmake)
include(FetchContent)
project(leigh-esp32-cube)

set(ETCPAL_OS_TARGET freertos CACHE STRING "The OS target for EtcPal")
set(ETCPAL_NET_TARGET lwip CACHE STRING "The network target for EtcPal")

add_library(FreeRTOS INTERFACE)
target_include_directories(FreeRTOS INTERFACE [freertos])
add_library(lwIP INTERFACE)
target_include_directories(lwIP INTERFACE [lwip])

FetchContent_Declare(
        sACN
        GIT_REPOSITORY "https://github.com/ETCLabs/sACN"
        GIT_TAG "v2.0.1"
)
FetchContent_MakeAvailable(sACN)

Build log output:

Processing esp-wesp32 (platform: espressif32; board: wesp32; framework: espidf)
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------Verbose mode can be enabled via `-v, --verbose` option
CONFIGURATION: https://docs.platformio.org/page/boards/espressif32/wesp32.html
PLATFORM: Espressif 32 (5.0.0) > Silicognition wESP32
HARDWARE: ESP32 240MHz, 320KB RAM, 4MB Flash
DEBUG: Current (cmsis-dap) External (cmsis-dap, esp-bridge, esp-prog, iot-bus-jtag, jlink, minimodule, olimex-arm-usb-ocd, olimex-arm-usb-ocd-h, olimex-arm-usb-tiny-h, olimex-jtag-tiny, tumpa)
PACKAGES:
 - framework-espidf @ 3.40401.0 (4.4.1) 
 - tool-cmake @ 3.16.4
 - tool-esptoolpy @ 1.30300.0 (3.3.0)
 - tool-idf @ 1.0.1
 - tool-mconf @ 1.4060000.20190628 (406.0.0)
 - tool-ninja @ 1.9.0
 - toolchain-esp32ulp @ 1.22851.191205 (2.28.51)
 - toolchain-xtensa-esp32 @ 8.4.0+2021r2-patch3
Reading CMake configuration...
KeyError: 'nameOnDisk':
  File "C:\Users\CaptainOHair\.platformio\penv\lib\site-packages\platformio\builder\main.py", line 188:
    env.SConscript("$BUILD_SCRIPT")
  File "C:\Users\CaptainOHair\.platformio\packages\tool-scons\scons-local-4.3.0\SCons\Script\SConscript.py", line 597:
    return _SConscript(self.fs, *files, **subst_kw)
  File "C:\Users\CaptainOHair\.platformio\packages\tool-scons\scons-local-4.3.0\SCons\Script\SConscript.py", line 285:
    exec(compile(scriptdata, scriptname, 'exec'), call_stack[-1].globals)
  File "C:\Users\CaptainOHair\.platformio\platforms\espressif32\builder\main.py", line 283:
    target_elf = env.BuildProgram()
  File "C:\Users\CaptainOHair\.platformio\packages\tool-scons\scons-local-4.3.0\SCons\Util.py", line 742:
    return self.method(*nargs, **kwargs)
  File "C:\Users\CaptainOHair\.platformio\penv\lib\site-packages\platformio\builder\tools\platformio.py", line 62:
    env.ProcessProgramDeps()
  File "C:\Users\CaptainOHair\.platformio\packages\tool-scons\scons-local-4.3.0\SCons\Util.py", line 742:
    return self.method(*nargs, **kwargs)
  File "C:\Users\CaptainOHair\.platformio\penv\lib\site-packages\platformio\builder\tools\platformio.py", line 122:
    env.BuildFrameworks(env.get("PIOFRAMEWORK"))
  File "C:\Users\CaptainOHair\.platformio\packages\tool-scons\scons-local-4.3.0\SCons\Util.py", line 742:
    return self.method(*nargs, **kwargs)
  File "C:\Users\CaptainOHair\.platformio\penv\lib\site-packages\platformio\builder\tools\platformio.py", line 328:
    SConscript(env.GetFrameworkScript(name), exports="env")
  File "C:\Users\CaptainOHair\.platformio\packages\tool-scons\scons-local-4.3.0\SCons\Script\SConscript.py", line 660:
    return method(*args, **kw)
  File "C:\Users\CaptainOHair\.platformio\packages\tool-scons\scons-local-4.3.0\SCons\Script\SConscript.py", line 597:
    return _SConscript(self.fs, *files, **subst_kw)
  File "C:\Users\CaptainOHair\.platformio\packages\tool-scons\scons-local-4.3.0\SCons\Script\SConscript.py", line 285:
    exec(compile(scriptdata, scriptname, 'exec'), call_stack[-1].globals)
  File "C:\Users\CaptainOHair\.platformio\platforms\espressif32\builder\frameworks\espidf.py", line 1234:
    build_components(env, framework_components_map, PROJECT_DIR)
  File "C:\Users\CaptainOHair\.platformio\platforms\espressif32\builder\frameworks\espidf.py", line 827:
    components_map[k]["lib"] = build_library(
  File "C:\Users\CaptainOHair\.platformio\platforms\espressif32\builder\frameworks\espidf.py", line 269:
    lib_name = lib_config["nameOnDisk"]

Can you open an issue at Issues · platformio/platform-espressif32 · GitHub? This is where the builder script resides that expects this lib_config["nameOnDisk"] to exist. If it doesn’t work with your use case where you include an external CMake project (but it works in plain ESP-IDF), then the builder script there can be improved.

Ok, I’ll go open an issue there.