Writing Makefile for project

[azarubkin]

Espressif IOT SDK User Manual says that we need to put all source files to 'app' subfolder of SDK tree. And there are gen_misc.bat and gen_misc.sh which supply the compilation options.

But how do I write Makefile which makes use of these compilation options?

I have looked for Makefiles in examples - they all seem to ignore the options that are passed by gen_misc.sh script (i.e. BOOT, APP, SPI_SPEED, SPI_MODE and SPI_SIZE_MAP).

I have tried to use Makefile in the root folder of SDK - it compiles my sources, but it doesn't define any GEN_BINS, GEN_LIBS, GEN_IMAGES which are required to generate the firmware files. Where should I define these variables and what value should they contain?

[dkinzer]

Espressif IOT SDK User Manual says that we need to put all source files to 'app' subfolder of SDK tree

Personally, I find the directory structure and build procedure provided unnecessarily complicated and difficult to understand. I adopted a much more straightforward procedure using just a makefile and a single-level directory structure for the source and the generated object files in a subdirectory. It could be expanded to utilize additional subdirectories along the lines of the "driver" subdirectory but, so far, I've avoided that complication.

[eriksl]

Exactly!

I don't see AT ALL why you should stick to that monstrosity.

I just made up a Makefile myself, as I always do, and copied the relevant parts, which are only a few lines in the end.