Compiler flags aren't properly expanded about arduino-cmake-ng HOT 8 OPEN

@foriequal0 Hi, just a little update:
I'm currently on a very busy schedule and don't have much time to work on the project, however, I can say that I'm in the middle of solving this bug and getting close to it.
It's a tough one, and it lays its roots in the core of the framework, and there's no "quick" way of temporarily fixing it.
Because of that, I'll integrate this fix officially into the next, v0.7 release (which refactors the entire framework anyways), and you could "enjoy" the fix once it gets PRed into master. This will be the first feature to PR in this release, so it won't drift much from the v0.6 release.

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https://github.com/foriequal0/Arduino-CMake-NG/tree/feature/fix-recursive-resolve
I tried to fix this. It just works for the hello-world example, but I think I'm breaking some other things.

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Whoa! That's a lot of info!
@foriequal0 Thanks so much for providing so many diagnostics, definitely will ease solving the bug 😄

As to the bug itself - Yes, it looks like something I'm partly aware of, as I've never fully completed the work there, thus recursive expansion isn't supported.
One of the main reasons for this is my lack of knowledge of Arduino development (ironic right?) - I only manage this project due to my CMake knowledge.

Anyways I'll have a look at it and your proposed solution as well.

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Thank you! I'm looking forward to it!

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Just encountered this and have a temporary workaround for compiling at least. You can add the appropriate USB_VID and USB_PID defines in the CMakeLists.txt:

cmake_minimum_required(VERSION 3.8)

set(CMAKE_TOOLCHAIN_FILE cmake/Arduino-Toolchain.cmake)

add_definitions("-DUSB_VID=0x2a03")
add_definitions("-DUSB_PID=0x8036")

project(myproject)

set(ARDUINO_TARGET_BOARD leonardo)
set(ARDUINO_SERIAL_PORT /dev/ttyACM0)

get_board_id(board_id ${ARDUINO_TARGET_BOARD})
add_arduino_example(${PROJECT_NAME} ${board_id} Blink)
upload_arduino_target(${PROJECT_NAME} ${board_id} ${ARDUINO_SERIAL_PORT})

I haven't got any further yet though, because the upload isn't working for my Leonardo based board. The avrdude and avrdude.conf in the Arduino 1.8.7 SDK gives the error " programmer type jtagice3_updi not found". Still digging into that one

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@pjwebster Thanks for the suggestion, although not pretty it's a perfectly valid fix!
About the upload issues you're having - no need to dig further since programmer support isn't available yet. Only the basic uploaders are supported, and I guess the jtagice3_updi isn't one of them ☹️

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Ironically, I don't want to use that programmer, just the normal one.

After no success, I tried using add_custom_target to add an upload step using avrdude directly and bricked my board. Had to dig up my usbasp and revert to using the Arduino IDE to reload the bootloader via the icsp 😢

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I'm sorry to hear that... Currently I have no solution for this, and unfortunately no time to investigate & possibly solve it either.

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