No such file or directory "Wifi.h and WiFiClientSecure.h" with ESP32, Chain+ in PlatformIO

[MohammedNoureldin]

I am trying to add WebSocket to my ESP32 project, but unfortunately the compiler fails. Following is the error message I get:

...
Indexing .pio\build\esp32_dev\libc94\libArduinoJson.a Compiling .pio\build\esp32_dev\lib748\FS\FS.cpp.o Compiling .pio\build\esp32_dev\lib748\FS\vfs_api.cpp.o In file included from .pio/libdeps/esp32_dev/WebSockets/src/WebSocketsClient.h:28:0, from include/websocket/websocket_client.hpp:3, from src/websocket_client.cpp:1: .pio/libdeps/esp32_dev/WebSockets/src/WebSockets.h:190:30: fatal error: WiFiClientSecure.h: No such file or directory ...
.pio/libdeps/esp32_dev/WebSockets/src/WebSockets.h:189:18: fatal error: WiFi.h: No such file or directory
...

I am using PlatformIO IDE, below is my platformio.ini (the important part):

[env:esp32_dev]
framework = arduino
platform = espressif32
board = esp32dev
platform_packages = 
    ; Uses new tool chain with a non-released Arduino package to be able to compile with C++17 (C++17 may become the default in the future, therefore this may be soon not necessary).
    toolchain-xtensa@~5.100200.0
    framework-arduinoespressif32@https://github.com/espressif/arduino-esp32.git
build_unflags =
    -std=c++11
    -fno-exceptions ; Removes the default exceptions disabling flag.
build_flags =
    -std=c++17
    -D NO_GLOBAL_SERIAL1
lib_ldf_mode = chain+
lib_deps =
        ...
        ; Here I am using the not-released version, because I need a fix for ESP32.
    https://github.com/Links2004/arduinoWebSockets.git#ed685e551f9a1a992037f5fdc791a36c4c43abc0

Could anyone please help me to get it compiling? I am not sure what is wrong, because my project compiles as long as I do not add WebSocket library to it.

UPDATE:

Well, I have a new finding, changing lib_ldf_mode from chain+ to chain makes the project compiles. What is going wrong here? I need to use chain+. I believe this used to work in my ESP8266 projects.

[Links2004]

this is normal and is based on how platform io is working.

you have to ways to get the "Wifi.h" auto detect via:

lib_ldf_mode = chain+

or manual via:

lib_deps = 
    WiFi
        WiFiClientSecure

[MohammedNoureldin]

@Links2004 Hi Markus, thanks for your reply. I am a bit confused. I am already using chain+, and this is exactly what triggers the problem, please find the minimal project I provided here:

https://github.com/platformio/platformio-core/issues/3876#issuecomment-799509343

[Links2004]

ok, I where able to reproduce after some updates. but I dont understand why this happens for the ESP8266 lib_ldf_mode = chain+ is working fine, but with the ESP32 it failes.

[MohammedNoureldin]

@Links2004 , exactly, that was my observation as well. Do you have any idea what to do? I already reported this as a bug in PlatformIO repo in the link shown above.

[MohammedNoureldin]

Hi Markus, do you think it makes sense to build something temporary into the code or library.json as kind of workaround until PlatformIO guys fix the bug?

Please check their temporary workaround here:

https://github.com/platformio/platformio-core/issues/3876#issuecomment-800163580

[Links2004]

the problem is that chain+ is required for ESP8266 and the NO_GLOBAL_INSTANCES define see https://github.com/Links2004/arduinoWebSockets/issues/624 forcing chain for the lib is no option since it will brake other code bases.

[MohammedNoureldin]

@Links2004 that is funny that the other issue was opened by meو too. I will think a bit about it then let you know if anything useful comes to my mind. Thank you Markus!

[lemonkey]

ugh

[ggoksel]

Thank you links2004..

[yoroboticscolombia]

HI, did you get it fixed?

[steefst33f]

for me actually completely removing:

lib_ldf_mode = deep+

in the platform.ini file made it compile without any errors. No idea why though...

[bbuster2]

Any update on this? I am having the same errors with an ESP32. I need lib_ldf_mode = deep+ or lib_ldf_mode = chain+, otherwise it won't compile because BLEDevice.h is missing etc.

Even adding lib_deps= WiFi and WiFiClientSecure gives me the same errors