Re: [Flightgear-devel] download_and_compile.sh: Build of stable fails since CMake version bump in OSG

[James T. <ja...@fl...>]

> On 20 Aug 2025, at 20:23, bo23--- via Flightgear-devel <fli...@li...> wrote:
> 
> diff --git a/CMakeLists.txt b/CMakeLists.txt
> index 9b9219edc..ef548413c 100644
> --- a/CMakeLists.txt
> +++ b/CMakeLists.txt
> @@ -35,6 +35,8 @@ if(COMMAND cmake_policy)
>     # Allows passing -DCMAKE_INTERPROCEDURAL_OPTIMIZATION=ON
>     cmake_policy(SET CMP0069 NEW)
> 
> +    cmake_policy(SET CMP0072 OLD)
> +
> 
>    #### FlightGear: macOS: set RPATH policy
>    cmake_policy(SET CMP0042 NEW)

Keep in mind we’re intending to remove the policy setting, and therefore use the NEW behaviour: as Scott said, the correct fix is to disable building OSG examples and applications, until someone updates our OSG to have those build correctly with libOpenGL.

https://gitlab.com/flightgear/flightgear/-/merge_requests/254
Remove OpenGL_GL_PREFERENCE (the default is appropriate). (!254) · Merge requests · FlightGear Flight Simulator / flightgear · GitLab
gitlab.com

Kind regards,
James