Cannot find IDF_PATH/components

[dr_glenn]

Project fails to compile, cannot find esp_sleep.h. I am using ESP-IDF v5.4 in VSCode in Windows 11 Pro. I have never had a problem like this with other ESP-IDF projects. I believe this is a problem in c_cpp_properties.json (found in .vscode directory). And I think the problem ultimately arises from the not normal subdir structure and the various CMakeLists file (see below). Here is "includePath" from c_cpp_properties:

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      "includePath": [
        "${config:idf.espIdfPath}/components/**",
        "${config:idf.espIdfPathWin}/components/**",
        "${workspaceFolder}/**"
      ],

The first line, is underlined in red (error) and the error is:

Cannot find: "${env:IDF_PATH}/components/"

It seems strange that there is no error with espIdfPathWin.
When I use command palette to run "ESP-IDF: Doctor Command" it reports:

ESP-IDF Path (idf.espIdfPath) C:<HOMEPATH>\esp\v5.4\esp-idf

The components are there (otherwise none of my other projects would compile). Also in file build/config.env it does show

"IDF_PATH": "C:/Users/glenn/esp/v5.4/esp-idf"

However, this project is unusual because the app_main is not in the usual subdir and I've had to alter CMakeLists files from the normal. I am trying to build from code with directory structure bb_epaper/esp_idf/mini_epaper_s3/main (yes, the dir is esp_idf, not esp-idf).
Here are the CMakeLists files:
Top (bb_epaper):

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cmake_minimum_required(VERSION 3.5)
include($ENV{IDF_PATH}/tools/cmake/project.cmake)
project(my_bb_paper)
add_subdirectory(esp_idf/mini_epaper_s3)

esp_idf: no CMakeLists file.

mini_epaper_s3:

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cmake_minimum_required(VERSION 3.16)
add_executable(my_app main/mini_epaper_s3.c)

main:

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set(COMPONENT_SRCS "mini_epaper_s3.c")
set(COMPONENT_ADD_INCLUDEDIRS "")
set(COMPONENT_REQUIRES soc nvs_flash ulp driver esp_hw_support)

register_component()

#
# ULP support additions to component CMakeLists.txt.
#
# 1. The ULP app name must be unique (if multiple components use ULP).
set(ulp_app_name ulp_${COMPONENT_NAME})
#
# 2. Specify all C and Assembly source files.
#    Files should be placed into a separate directory (in this case, ulp/),
#    which should not be added to COMPONENT_SRCS.
set(ulp_riscv_sources "ulp/main.c")

#
# 3. List all the component source files which include automatically
#    generated ULP export file, ${ulp_app_name}.h:
set(ulp_exp_dep_srcs ${app_sources})

#
# 4. Call function to build ULP binary and embed in project using the argument
#    values above.
ulp_embed_binary(${ulp_app_name} "${ulp_riscv_sources}" "${ulp_exp_dep_srcs}")

I don't know what other info I should include here. I hope this is enough - and not too much.

[kondalkolipaka]

Hello,

Could you replace add_subdirectory(esp_idf/mini_epaper_s3) with the set(EXTRA_COMPONENT_DIRS "esp_idf/mini_epaper_s3") see if that helps?

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set(EXTRA_COMPONENT_DIRS "esp_idf/mini_epaper_s3")

More on this here - https://docs.espressif.com/projects/esp ... -component

Screenshot 2025-05-23 at 6.15.32 PM.png (671.42 KiB) Viewed 1378 times

Thanks

[mikl604]

I found such a bug (or feature)
If you upload a project with the "Search for nested projects" field marked, then a bunch of errors about undiscovered libraries appear. And if you download with the "Search for nested projects" unchecked, then everything compiles normally.

[dr_glenn]

Hello,

Could you replace add_subdirectory(esp_idf/mini_epaper_s3) with the set(EXTRA_COMPONENT_DIRS "esp_idf/mini_epaper_s3") see if that helps?

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set(EXTRA_COMPONENT_DIRS "esp_idf/mini_epaper_s3")

More on this here - https://docs.espressif.com/projects/esp ... -component

I followed your advice (and replied a few days ago, but my reply got lost somehow). You got me further but I still cannot complete the build. I get a FAILED status at:

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[942/1032] Building C object esp-idf/esp_lcd/CMakeFiles/__idf_esp_lcd.dir/rgb/esp_lcd_panel_rgb.c.obj
FAILED: esp-idf/esp_lcd/CMakeFiles/__idf_esp_lcd.dir/rgb/esp_lcd_panel_rgb.c.obj

The error occurs in ESP-IDF component code! Worse yet, an "internal compiler error"???

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C:/Users/glenn/Documents/ESP32/my_bb_paper/components/esp_lcd/rgb/esp_lcd_panel_rgb.c: In function 'rgb_panel_draw_bitmap':
C:/Users/glenn/Documents/ESP32/my_bb_paper/components/esp_lcd/rgb/esp_lcd_panel_rgb.c:686:1: internal compiler error: Segmentation fault
  686 | }
      | ^
Please submit a full bug report, with preprocessed source (by using -freport-bug).

[dr_glenn]

I found such a bug (or feature)
If you upload a project with the "Search for nested projects" field marked, then a bunch of errors about undiscovered libraries appear. And if you download with the "Search for nested projects" unchecked, then everything compiles normally.

Interesting, but not relevant to my problem.

[dr_glenn]

I noted that I'm now seeing this error:

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/esp-idf/components/esp_lcd/rgb/esp_lcd_panel_rgb.c:686:1: internal compiler error: Segmentation fault

Other people have seen this error and it has been filed at https://github.com/espressif/esp-idf/issues/12180.
Based on this report, I think the bug appears with ESP-IDF v5.x, but it seems likely that the problem is with the compiler and not the source code.
If I can get past this problem, I think my trouble with setting correct CMakeLists files has been resolved.