Cannot get CMake graph for custom target

[tripathiu]

Hi @multiplemonomials,

Note Editing the original issue as I didn't know it was already fixed 😅

First of all thank you for creating this project. A lot of work that I do depends on mbed-os and their sudden disappearance got a lot of us anxious. Hopefully, this project keeps it alive and even makes it better than the original! 🏆

I want to get the graph of dependency that cmake generates using the following command:

cmake -B build -S . && cmake --graphviz=dot/dot build && dot dot/dot -Tpdf -o dot/dot.pdf

But I get the following error for my custom target...

-- mbedos found: /home/triutkarsh/.local/opt/mbed-os-src
'mbed-tools' 'configure' '-t' 'GCC_ARM' '-m' 'CUSTOM_TARGET' '-o' '/home/triutkarsh/firmware/build' '-b'
 'develop' '--mbed-os-path' '/home/triutkarsh/.local/opt/mbed-os-src'
mbed_config.cmake has been generated and written to '/home/triutkarsh/firmware/build/mbed_config.cmake'
-- Found Python3: /usr/bin/python3.8 (found version "3.8.10") found components: Interpreter 
-- Checking for Python package intelhex -- found
-- Checking for Python package prettytable -- found
-- Checking for Python package future -- found
-- Checking for Python package jinja2 -- found
-- Checking for Python package mbed_tools -- found
CMake Error at /home/triutkarsh/.local/opt/mbed-os-src/tools/cmake/mbed_generate_configuration.cmake:21 (messa
ge):
  You must define MBED_TARGET to the Mbed target you wish to build for!
Call Stack (most recent call first):
  /home/triutkarsh/.local/opt/mbed-os-src/tools/cmake/app.cmake:42 (include)
  CMakeLists.txt:33 (include)


-- Configuring incomplete, errors occurred!

Thanks and cheers. 🍻

[multiplemonomials]

Glad that you're getting some use out of the project!
Oh, this is a pretty easy fix. You just need to pass the name of your target, like:

cmake -DMBED_TARGET=<your target name> -B build -S . && cmake --graphviz=dot/dot build && dot dot/dot -Tpdf -o dot/dot.pdf

See here for the command line build instructions: https://github.com/mbed-ce/mbed-os/wiki/Project-Setup:-Command-Line

However, I will say that I don't have terribly polished support for custom targets at this point (see #48). I can try to set up some docs for you to use in the next week or two though.

[multiplemonomials]

And regarding your original question, yes indeed I have almost completely gotten rid of interface targets in Mbed CE. The core mbed code is compiled into a single library (well, two possible versions, mbed-baremetal and mbed-os). And optional libraries are handled as STATIC libraries, not INTERFACE or OBJECT. This means that no code should ever get compiled more than once!

[tripathiu]

Thank you for your response. I guess it was my cmake configuration causing the issue. I tried it with a blank project and it works.

optional libraries are handled as STATIC libraries, not INTERFACE or OBJECT

That's really awesome. I would like to explore a little more mbed-ce. Seems like there is already a lot of work put into it.