Externally provided 3rd-parties (googletest, Boost, etc.) installation

[GuillaumeDua]

Question

• Is there a way to use a googletest/googlemock, Boost, implementations provided by a dependency-manager (such as Conan, vcpkg, etc.) or CMake's fetch_content,
  instead of the system one, in a ROS (1) project ?

Motivations

The key idea is to get newer versions, in order to:

• Get rid of some warnings produced by modern compilers and tools
• Ease the transition to C++20, 23

---

Examples:

• using fetch_content in a CMakeLists.txt

FetchContent_Declare(
    googletest
    GIT_REPOSITORY https://github.com/google/googletest.git
    GIT_TAG        v1.14.0 # f8d7d77c06936315286eb55f8de22cd23c188571
    OVERRIDE_FIND_PACKAGE
)
FetchContent_MakeAvailable(googletest)
FetchContent_MakeAvailable(googlemock)