Ceedling CMock settings for ARM STM32

I've been setting up Ceedling for STM32. The howto is very scarce, so far I've managed to google next to nothing. Fortunately, the framework is relatively transparent for its size. This is a PIC configuration. I set up something similar (project.yml):

...
:defines:
  # in order to add common defines:
  #  1) remove the trailing [] from the :common: section
  #  2) add entries to the :common: section (e.g. :test: has TEST defined)
  :commmon: &common_defines #[]
    - STM32F103xB
    - UNITY_INT_WIDTH=32
    - CMOCK_MEM_INDEX_TYPE=uint32_t
    - UNITY_LINE_TYPE=uint16_t
  :test:
    - *common_defines
    - TEST
  :test_preprocess:
    - *common_defines
    - TEST

So far so good (no real work is yet attempted). Having added this definition

    - CMOCK_MEM_PTR_AS_INT=uint32_t

I'm having a warning:

/vendor/ceedling/vendor/cmock/src/cmock.c:105:40: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
   index = *(CMOCK_MEM_INDEX_TYPE*)((CMOCK_MEM_PTR_AS_INT)next - CMOCK_MEM_INDEX_SIZE);

No wonder, as next is a PC platform 64-bit pointer. Still I am not at all sure whether I have to control CMOCK_MEM_PTR_AS_INT or not. It depends on whether CMOCK_MEM_PTR_AS_INT is a critical target (ARM) platform definition.

So far I haven't found an STM32 example.

Solution

Here is the hard won sequence, complete with the Eclipse integration:

Install Ceedling:

$ gem install ceedling

Create Ceedling project (troubleshooting #215):

myproject $ cd ..
$ ceedling new myproject
$ cd myproject/vendor/
$ rm -rf ceedling/
$ git clone --recursive https://github.com/throwtheswitch/ceedling.git

Modify vendor/ceedling/plugins/module_generator/config/module_generator.yml:

:module_generator:
  :project_root: ./
  :source_root:  Src/
  :inc_root:     Inc/
  :test_root:    test/

Modify project.yml:

...
:paths:
  :test:
    - +:test/**
    - -:test/support
  :source:
    - Src/**
  :include:
    - Drivers/**
    - Inc/**
  :support:
    - test/support
...
:defines:
  :commmon: &common_defines  # A nice typo, next to invisible :)
    - STM32F103xB
...
:cmock:
  :strippables:
    - volatile
...
:plugins:
  :load_paths:
    - vendor/ceedling/plugins
  :enabled:
#    - stdout_pretty_tests_report
    - stdout_gtestlike_tests_report
    - module_generator

Eclipse C/C++ Unit plugin configuration:

Main/Project: myproject
Main/Application: /home/user/.gem/ruby/2.5.0/bin/ceedling
Main/Disable auto build
Arguments/Program arguments: clobber\ntest:all
Testing/Test Runner: Google Test Runner
Environment: Variable TERM Value xterm