Xcode WDL-OL VST3 Semantic Issue; Use of undeclared identifier 'nullptr'

[pigeons7bananas]

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Hi all,
Ive been trying to get this working for about 1 week now but am not making any progress. Cant find any info online and nobody seems to care enough/know enough to answer with any kind of solution.....(on Cocos/Reaper forums)

Im trying to get Xcode to compile VST3 plugin. Using WDL-OL framework. Fresh install of MacOS Sierra. Using this guide for setup: http://martin-finke.de/blog/articles/au ... up-wdl-ol/ (http://martin-finke.de/blog/articles/audio-plugins-002-setting-up-wdl-ol/) Also using XcodeLegacy to install all libs/sdk's. App,VST2 and AU compile/work. VST3 and AAX do not.

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wdl-ol/VST3_SDK/public.sdk/source/common/memorystream.cpp:41:1: 
Use of undeclared identifier 'nullptr'

memorystream.cpp

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IMPLEMENT_FUNKNOWN_METHODS (MemoryStream, IBStream, IBStream::iid)
static const TSize kMemGrowAmount = 4096;

I've tried all 3 compilers, different base sdk's. When C++ Language Dialect is set to C++11 or GNU++11 i get a different Semantic Issue error:

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wdl-ol/WDL/IPlug/IGraphicsMac.mm:279:21: Non-constant-expression cannot 
be narrowed from type 'int' to 'CGFloat' (aka 'double') in initializer list 

IGraphicsMac.mm

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NSSize size = { w, h };
[(IGRAPHICS_COCOA*) mGraphicsCocoa setFrameSize: size ];

Different environments tried'
Xcode8.1 - MacOS Siera10.12.11 (fresh-install!)
Xcode6, 6.1, 7, 7.2.1, 7.3.1 - Yosemite10.10.5 (old setup)

I just dont know what else to try...... Help?

[Mayae]

The first error is correctly identified by you as lack of C++11 support. The second; just go ahead and fix the issues (the tooltips will tell you how). There are multiple of these errors scattered around, and they are picked up as C++ compilers get more conforming.

Checking out the tip of IPlug reveals that the error is fixed, so you're using an old version of IPlug.

[hibrasil]

Yes unfortunately, that tutorial website gives some really bad advice to checkout an ancient commit of WD LOL, which seems to cause a lot of people trouble!

[pigeons7bananas]

AUTO-ADMIN: Non-MP3, WAV, OGG, SoundCloud, YouTube, Vimeo, Twitter and Facebook links in this post have been protected automatically. Once the member reaches 5 posts the links will function as normal.

The first error is correctly identified by you as lack of C++11 support. The second; just go ahead and fix the issues (the tooltips will tell you how). There are multiple of these errors scattered around, and they are picked up as C++ compilers get more conforming.

Checking out the tip of IPlug reveals that the error is fixed, so you're using an old version of IPlug.

Ok, so i was using an old version of WDL-OL. I was following the guide: http://martin-finke.de/blog/articles/au ... up-wdl-ol/ (http://martin-finke.de/blog/articles/audio-plugins-002-setting-up-wdl-ol/) there it states to use the same version as he did at the time of the article, so thats what i've been doing.......("git checkout 0a360c90b3460717210eeaee7464bc7009c9a5ba .")

I've now re-installed the latest version and i can definitely see differences.
Im pretty sure that the 'tool-tips' never popped-up before but i might be wrong... One identified its self and i fixed it, however, the next error does not give me a 'tool-tip'.

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Plugin-Development/wdl-ol/VST3_SDK/public.sdk/source/common/memorystream.cpp:41:1: Use of undeclared identifier 'nullptr'

memorystream.cpp

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IMPLEMENT_FUNKNOWN_METHODS (MemoryStream, IBStream, IBStream::iid)

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Plugin-Development/wdl-ol/VST3_SDK/pluginterfaces/base/funknown.h:159:2: Expanded from macro 'IMPLEMENT_FUNKNOWN_METHODS'

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Plugin-Development/wdl-ol/VST3_SDK/pluginterfaces/base/funknown.h:152:9: Expanded from macro 'IMPLEMENT_QUERYINTERFACE'

I've read a post by @Oli Larkin i remember mentioning to better stay away from Xcode' "Update to Recommended Settings" feature, should i never update or should i?
Also; SDK version; 1.5still? should i move higher?

[hibrasil]

yes avoid that xcode Update to Recommended Settings"

[pigeons7bananas]

Am i seriously stupid and missing something?

[Mayae]

Am i seriously stupid and missing something?

You're still compiling without C++11 support, google xcode and C++11. Nullptr is a compiler intrinsic after C++11

[syntonica]

The latest WDL shows this:

NSSize size = { static_cast<CGFloat>(w), static_cast<CGFloat>(h) };
[(IGRAPHICS_COCOA*) mGraphicsCocoa setFrameSize: size ];

Add the casts to see if that gets you past the error.

[Qrchack]

The thing is your C++ compiler doesn't support C++11, and that's why it complains that it doesn't know what "nullptr" is. I'm not too familiar with Apple's compilers, but you need to look up if there's C++11 support in Xcode and get at least the version that supports it (if there's one). It might also be a hidden option that you need to enable.

[gnjp]

Xcode supports c++11 (4.2 onwards, so you're fine with 6+).

You just need to set the correct flags in your vst3 target settings in Xcode from the drop down menus for each value:
C++ Language Dialect -> C++11 [-std=c++11]
C++ Standard Library -> libc++ (LLVM C++ standard library with C++11 support)

or in common.xcconfig
CLANG_CXX_LANGUAGE_STANDARD = c++0x
CLANG_CXX_LIBRARY = libc++

compiler set to the default: Apple LLVM