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4.6.2p2 iOS Arc Restrictions compiler error

Discussion in 'iOS and tvOS' started by ziggyeye, Feb 13, 2015.

  1. ziggyeye

    ziggyeye

    Joined:
    May 22, 2013
    Posts:
    5
    Using 4.6.2p2 iOS build in Xcode gives a compiler error in UnityRendering.h
    ARC Restrictions
    ARC forbids Objective-C objects in struct
     
    ziggyeye, Feb 13, 2015
    #1

  2. Drowning-Monkeys

    Drowning-Monkeys

    Joined:
    Mar 6, 2013
    Posts:
    328
    bump
     
    Drowning-Monkeys, Feb 13, 2015
    #2

  3. Alexey

    Alexey

    Unity Technologies

    Joined:
    May 10, 2010
    Posts:
    1,602
    well - compiler error cannot happen in header file - so please drop the whole message from clang
    anyway, comparing code to 5.0 where we have arc fully enabled tells me you should try this:
    in UnityRendering.h look for
    START_STRUCT(UnityDisplaySurfaceGLES, UnityDisplaySurfaceBase)

    change

    CAEAGLLayer* layer;
    EAGLContext* context;

    to

    OBJC_OBJECT_PTR CAEAGLLayer* layer;
    OBJC_OBJECT_PTR EAGLContext* context;

    and please post here if it helps
     
    Alexey, Feb 13, 2015
    #3
    paradizIsCool likes this.

  4. Drowning-Monkeys

    Drowning-Monkeys

    Joined:
    Mar 6, 2013
    Posts:
    328
    In UnityRendering.h:

    Code (csharp):
    1.  
    2. // GLES display surface
    3. START_STRUCT(UnityDisplaySurfaceGLES, UnityDisplaySurfaceBase)
    4.     CAEAGLLayer*    layer;
    5.     EAGLContext*    context;
    6.  
    Causes the error mentioned above.
     
    Drowning-Monkeys, Feb 13, 2015
    #4

  5. Drowning-Monkeys

    Drowning-Monkeys

    Joined:
    Mar 6, 2013
    Posts:
    328
    oh, and that worked by the way, thanks!!!
     
    Drowning-Monkeys, Feb 13, 2015
    #5

  6. akasurreal

    akasurreal

    Joined:
    Jul 17, 2009
    Posts:
    441
    +1 fixed my same exact issue
     
    akasurreal, Feb 15, 2015
    #6

  7. paradizIsCool

    paradizIsCool

    Joined:
    Jul 10, 2014
    Posts:
    177
    Any idea how to fix this when using command line build ?
    It works when I build manually and edit file each time, but I can't find a way to edit UnityRendering.h once for all ?

    - FOUND Unity ▸ Contents ▸ PlaybackEngines ▸ iossupport ▸ Trampoline ▸ Classes ▸ Unity ▸ UnityRendering.h and edited, it works
     
    Last edited: Feb 16, 2015
    paradizIsCool, Feb 16, 2015
    #7

  8. Deleted User

    Deleted User

    Guest

    This worked for me, after changing that code itself I can build the projects without getting that error every time.
     
    Deleted User, Feb 16, 2015
    #8

  9. Alexey

    Alexey

    Unity Technologies

    Joined:
    May 10, 2010
    Posts:
    1,602
    >>Any idea how to fix this when using command line build ?
    4.6.3 will have it fixed no worries
     
    Alexey, Feb 16, 2015
    #9

  10. andypoptacular

    andypoptacular

    Joined:
    Oct 28, 2014
    Posts:
    1
    This bug makes you wonder... did the QA team even try building an iOS project?
     
    andypoptacular, Feb 18, 2015
    #10

  11. Alexey

    Alexey

    Unity Technologies

    Joined:
    May 10, 2010
    Posts:
    1,602
    >>This bug makes you wonder... did the QA team even try building an iOS project?
    and that made me wonder - if people are actually trying to understand things and read? this bug is triggered only if you have objc (not objc++) plugin forcibly built with ARC - this cant be considered quite common situation
     
    Alexey, Feb 18, 2015
    #11

  12. Bill-Robinson

    Bill-Robinson

    Joined:
    Sep 21, 2012
    Posts:
    6
    We had the same problem. Maybe it's because we were using the https://github.com/playgameservices/play-games-plugin-for-unity

    I added this fugly piece of code to our build pipeline.

    Code (CSharp):
    1.             {
    2.                 var renderingFile = Path.Combine(xCodeDir, "Classes/Unity/UnityRendering.h");
    3.                 var r = new Regex(@"^(\s*)(CAEAGLLayer\*\s*layer|EAGLContext\*\s*context)\;\s*$");
    4.                 File.WriteAllLines(renderingFile, File.ReadAllLines(renderingFile).Select(line => r.Replace(line, "$1OBJC_OBJECT_PTR $2;")).ToArray());
    5.             }
    6.  
     
    Bill-Robinson, Feb 19, 2015
    #12