This bug report was migrated from our old Bugzilla tracker.

Reported in version: don't know
Reported for operating system, platform: macOS 10.15, x86_64

Comments on the original bug report:

On 2020-02-16 13:31:54 +0000, wrote:

I am trying to build the latest source from the default branch and I am using MacOS Catalina version 10.15.3 (19D76).

Compiling SDL2 using CMake and setting options VIDEO_METAL/VIDEO_VULKAN to ON fails to enable them. Building SDL2 2.0.10 from source works correctly and Metal/Vulkan support is enabled.

The relevant output I get from CMake is the following:
-- Performing Test HAVE_FRAMEWORK_METAL
-- Performing Test HAVE_FRAMEWORK_METAL - Failed

-- VIDEO_METAL (Wanted: 0): OFF
-- VIDEO_VULKAN (Wanted: 0): OFF

When using /.configure, I think it works correctly although I have not tried to build and link against it because I can see it print the following at the end:

Video drivers : dummy cocoa metal opengl opengl_es2 vulkan

I believe I have tracked the issue to potentially this line and commit: https://hg.libsdl.org/SDL/rev/b87ba0fad17e#l1.44

My assumption is that check_c_source_compiles() fails to compile the provided input because it is an objective-c source (for example using #import)and not a c source.

On 2020-06-27 06:03:39 +0000, Ryan C. Gordon wrote:

This is fixed in https://hg.libsdl.org/SDL/rev/e7828d3a7576

--ryan.

On 2020-09-15 02:04:44 +0000, wrote:

*** Bug 5204 has been marked as a duplicate of this bug. ***