ESP32 Forum

I have a CMakeLists.txt that works fine with ESP IDF v3.2, but when I try to build it (from clean check-out) with ESP IDF v3.3 I get the following CMake error:
Line 9 of my CMakeLists.txt file looks like this:
(This is required to keep CLion happy)

So the target "main" was valid with the IDF v3.2 build system, but does not seem to exist with the v3.3 build system.

I have other directives that also use the "main" target and they show the same error.

Is there an easy fix for this?

It looks like v3.2's project.cmake used the directory of the component that contained the main() function as the name of the target executable, whereas v3.3 uses $IDF_PROJECT_EXECUTABLE instead. So I was able to fix this by changing my rules such as this:
To this:
Once I did this, I was able to get to the next step (see next post).

In case this is useful to anyone in the future (including future me):

With ESP IDF v3.2, I had the following in my top-level CMakeLists.txt file:

execute_process(COMMAND "git" "describe" "--match=NeVeRmAtCh" "--always" "--abbrev=14" "--dirty"
RESULT_VARIABLE git_result
OUTPUT_VARIABLE git_output
OUTPUT_STRIP_TRAILING_WHITESPACE)

target_compile_definitions(main PUBLIC GIT_COMMIT="${git_output}")

This had the effect of including the option "-DGIT_COMMIT=..." whenever building code within the "main" component (my top-level component where my main() function is, amongst many others). I use this preprocessor definition within the code.

Now I'm migrating the project to ESP IDF v3.3, and I've discovered (above) that "main" isn't a valid target name any more, so I've tried to replace it with ${IDF_PROJECT_EXECUTABLE}, however that doesn't have the same effect - the compile-time definition -DGIT_COMMIT=... is not added to the compiler command line.

I moved this into main/CMakeLists.txt and using ${COMPONENT_TARGET} instead:
This seems to work and adds the preprocessor definition to the command line.

I'm not sure why it wouldn't work against the ${IDF_PROJECT_EXECUTABLE} target however.