Building and managing dependencies

All build processes work the same way. We start from the top-level listfile and navigate downward into the project source tree. Figure 12.4 shows which project files partake in building. Numbers in parentheses indicate the order of the CMake script execution:

Figure 12.4 – Files used in the build stage

Our top-level listfile will configure the project and load nested elements:

chapter-12/01-full-project/CMakeLists.txt

cmake_minimum_required(VERSION 3.20.0)
project(Calc VERSION 1.0.0 LANGUAGES CXX)
list(APPEND CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/cmake")
include(NoInSourceBuilds)
add_subdirectory(src bin)
add_subdirectory(test)
include(Install)

We start by providing key project details and adding a path to the CMake utility modules (the cmake directory in our project). We then disable in-source builds (through a custom module) and include two key directories:

• src, containing the project source...