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Bug 5342

Summary: Failure to build on arm64-apple-darwin (ARM macOS Big Sur)
Product: SDL Reporter: fxcoudert
Component: buildAssignee: Sam Lantinga <slouken>
Status: RESOLVED FIXED QA Contact: Sam Lantinga <slouken>
Severity: normal    
Priority: P2    
Version: 2.0.12   
Hardware: x86   
OS: Other   

Description fxcoudert 2020-11-08 15:24:07 UTC 
SDL 2.0.12 fails to build on macOS Big Sur for ARM (Apple Silicon). When trying to build, I get:

In file included from /private/tmp/sdl2-20201108-12176-1btpgc2/SDL2-2.0.12/src/render/opengles/SDL_render_gles.c:27:
include/SDL_opengles.h:33:10: fatal error: 'GLES/gl.h' file not found
#include <GLES/gl.h>
         ^~~~~~~~~~~

The reason lies in the configure.ac code, which assumes that arm*-darwin* is the same as iOS. This was true before, but now more specific checks are needed. This happens in two places:

        # libusb does not support iOS
        arm*-apple-darwin* | *-ios-* )
            skiplibusb=yes
            ;;

and

    arm*-apple-darwin*|*-ios-*)
        ARCH=ios

which sets ARCH to ios instead of macosx on ARM Big Sur. Removing the arm-darwin part in both cases (and regenerating configure) allows to successful compilation of SDL.
Comment 1 Sam Lantinga 2020-11-12 03:32:59 UTC 
This is fixed for the 2.0.14 release, thanks!