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Bug 4828

Summary: SDL_render_metal.m compilation error against OS X 10.11 SDK
Product: SDL Reporter: Dominik Reichardt <sdl-bugzilla>
Component: renderAssignee: Sam Lantinga <slouken>
Status: RESOLVED FIXED QA Contact: Sam Lantinga <slouken>
Severity: normal    
Priority: P2 CC: amaranth72
Version: HG 2.0   
Hardware: x86_64   
OS: Mac OS X 10.11   

Description Dominik Reichardt 2019-10-17 06:51:44 UTC 
With current hg, I get these errors:
/Users/Whatever/Code/Merc/SDL/src/render/metal/SDL_render_metal.m:274:48: error: 
      use of undeclared identifier 'MTLStepFunctionPerVertex'; did you mean
      'MTLVertexStepFunctionPerVertex'?
            vertdesc.layouts[0].stepFunction = MTLStepFunctionPerVertex;
                                               ^~~~~~~~~~~~~~~~~~~~~~~~
                                               MTLVertexStepFunctionPerVertex
/opt/SDKs/MacOSX10.11.sdk/System/Library/Frameworks/Metal.framework/Headers/MTLVertexDescriptor.h:77:5: note: 
      'MTLVertexStepFunctionPerVertex' declared here
    MTLVertexStepFunctionPerVertex = 1,
    ^
/Users/Whatever/Code/Merc/SDL/src/render/metal/SDL_render_metal.m:283:48: error: 
      use of undeclared identifier 'MTLStepFunctionPerVertex'; did you mean
      'MTLVertexStepFunctionPerVertex'?
            vertdesc.layouts[0].stepFunction = MTLStepFunctionPerVertex;
                                               ^~~~~~~~~~~~~~~~~~~~~~~~
                                               MTLVertexStepFunctionPerVertex
/opt/SDKs/MacOSX10.11.sdk/System/Library/Frameworks/Metal.framework/Headers/MTLVertexDescriptor.h:77:5: note: 
      'MTLVertexStepFunctionPerVertex' declared here
    MTLVertexStepFunctionPerVertex = 1,
    ^
2 errors generated.
make: *** [build/SDL_render_metal.lo] Error 1

This was on OS X 10.14 with the 10.11 SDK but I first encountered this on a real 10.11 machine.
MACOSX_DEPLOYMENT_TARGET=10.7
Comment 1 Dominik Reichardt 2019-10-17 07:10:12 UTC 
Deployment Target does mot factor in, I just tested.
SDKs 10.12 and higher do not have a problem at this point.
Comment 2 Alex Szpakowski 2019-10-17 21:49:48 UTC 
Thanks for the report, this change should fix it: https://hg.libsdl.org/SDL/rev/d36bfafbe115