cmake fails about esp-idf-lib HOT 3 CLOSED

I see these variables do exist in the ESP8266 RTOS SDK. they are defined in:

~/esp/sdk/ESP8266_RTOS_SDK/tools/cmake$ rg IDF_VERSION
version.cmake
1:set(IDF_VERSION_MAJOR 4)
2:set(IDF_VERSION_MINOR 0)
3:set(IDF_VERSION_PATCH 0)

but including version.cmake in my CMakeLists.txt does not solve the problem. neither works a different order of the directives in the CMakeLists.txt.

maybe someone can help me out here. as I understand it, this whole esp-idf-lib repo is not usable with the esp8266 sdk when it comes to cmake. all components have the IDF_VERSION_* variable check in them. I wonder why nobody came up with this error until now. a search in the issues didnt help.

am I really the only one with this problem?

from esp-idf-lib.

maybe related #276

from esp-idf-lib.

when I ported the libraries to esp8266, the SDK was, and probably still is, unusable with idf.py, i.e. cmake-based build. the SDK has been abandoned (see the issues and the PRs in the repo). I do not follow the development of the SDK anymore. that is why only make build is in the CI.

from esp-idf-lib.