CMake 101 (Part 1)

Following the tutorials

Obviously, the first thing to do is to follow the existing tutorials. Unfortunately, most of them will show you how to compile some code into a single executable.

What I need is something that will run a specific custom command. I don't use the GCC toolchain. These tools are proprietary.

Some Google-fu later, I discover the following resources:

• https://github.com/tymonx/logic - this guy seems to have done an incredible job

  might be a good place to look for some pointers although I wouldn't use it as is as I want to ease my way into this and keep most of the things as they were.

• What do you know? There's a add_custom_command and add_custom_target

So my first try at a CMakefile.txt goes as follows:

cmake_minimum_required(VERSION 3.14)

# set the project name and version
project(my_project VERSION 8.0.0)

# find the path to the xrun command
find_program(XCELIUM_XRUN xrun
    PATH_SUFFIXES bin ${XCELIUM_PATH_SUFFIXES}
    DOC "Path to the xrun executable"
)

# add "compile" target which runs xrun -version
add_custom_command(OUTPUT xcelium.d
    COMMAND ${XCELIUM_XRUN} -version)

add_custom_target(compile ALL
    DEPENDS xcelium.d)

This works nicely. Not sure if xcelium.d is the correct output definition. But running:

$ cmake3 ..
$ make

Shows the following:

[100%] Generating xcelium.d
TOOL:   xrun    19.09-s001
[100%] Built target compile

Next step. Get the file list we currently use to pass it with a bunch of flags to xrun.