How to do it

This is a C project and we will use the C99 standard. We will build the CMakeLists.txt file step by step:

  1. We declare a C project and enforce compliance with the C99 standard:
cmake_minimum_required(VERSION 3.5 FATAL_ERROR)  project(recipe-10 LANGUAGES C)set(CMAKE_C_STANDARD 99)set(CMAKE_C_EXTENSIONS OFF)set(CMAKE_C_STANDARD_REQUIRED ON)
  1. We append the current source directory, CMAKE_CURRENT_SOURCE_DIR, to the list of paths where CMake will look for modules, CMAKE_MODULE_PATH. This is where our own FindZeroMQ.cmake module is located:
list(APPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR})
  1. We will discuss FindZeroMQ.cmake later, but now that the FindZeroMQ.cmake module is available, we search for the library. This is a required ...

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