How to add conan CMake build definition

When building a library using conan, this is the default conanfile.py definition for building using CMake

conan_cmake_example.py
cmake = CMake(self)
cmake.configure(source_folder="hello")
cmake.build()

You can easily add definitions like this:

conan_cmake_definition.py
cmake.definitions["MY_FLAG"] = "1"

This will generate -DMY_FLAG=1 when calling CMake

Full example:

conan_cmake_full.py
cmake = CMake(self)
cmake.definitions["USE_SYSTEM_CPR"] = "1
cmake.configure(source_folder="elasticlient")"
cmake.build()

Note that you need to add all cmake.definitions calls before calling cmake.configure()


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