Downloaded current tip from Github, tried to compile a new plugin project (created via Introjucer and changed nothing), and received similar errors (related to Finder.h). I am not doing anything unusual - latest xcode, JUCE, etc.
EDIT: Should have mentioned in-case it makes a difference; host demo and demo apps compile with no problems. DemoPlugin compiles except for VST3.
With VST3 included in the compile, error messages are:
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk/System/Library/Frameworks/CoreServices.framework/Frameworks/CarbonCore.framework/Headers/Finder.h:240:3: Unknown type name 'Point'; did you mean 'Steinberg::Point'?
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk/System/Library/Frameworks/CoreServices.framework/Frameworks/CarbonCore.framework/Headers/Finder.h:248:3: Unknown type name 'Point'; did you mean 'Steinberg::Point'?
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk/System/Library/Frameworks/CoreServices.framework/Frameworks/CarbonCore.framework/Headers/Finder.h:261:3: Unknown type name 'Point'; did you mean 'Steinberg::Point'?
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk/System/Library/Frameworks/CoreServices.framework/Frameworks/CarbonCore.framework/Headers/Finder.h:284:3: Unknown type name 'Point'; did you mean 'Steinberg::Point'?
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk/System/Library/Frameworks/CoreServices.framework/Frameworks/CarbonCore.framework/Headers/Finder.h:314:3: Unknown type name 'Point'; did you mean 'Steinberg::Point'?
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk/System/Library/Frameworks/CoreServices.framework/Frameworks/CarbonCore.framework/Headers/Finder.h:327:3: Unknown type name 'Point'; did you mean 'Steinberg::Point'?
The first message is referring to this ->
struct FileInfo {
OSType fileType; /* The type of the file */
OSType fileCreator; /* The file's creator */
UInt16 finderFlags; /* ex: kHasBundle, kIsInvisible... */
Point location; /* File's location in the folder */
/* If set to {0, 0}, the Finder will place the item automatically */
UInt16 reservedField; /* (set to 0) */
};
The rest are related to other structs, but same idea.