Bug 279837 – [WTF] Ignore -Welaborated-enum-base in CFStringSPI.h when building with external SDK and open source clang

• Component: Web Template Framework
• Status: RESOLVED WONTFIX

[David Kilzer (:ddkilzer)]

Fix -Welaborated-enum-base in CFStringSPI.h when building with external SDK and open source clang.

WebKitBuild/Release/usr/local/include/wtf/spi/cf/CFStringSPI.h:39:9: error: non-defining declaration of enumeration with a fixed underlying type is only permitted as a standalone declaration; missing list of enumerators? [-Welaborated-enum-base]
   39 | typedef CF_ENUM(CFIndex, CFStringCharacterClusterType)
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from Source/WTF/wtf/text/cocoa/TextBreakIteratorInternalICUCocoa.cpp:25:
In file included from Source/WTF/wtf/RetainPtr.h:33:
In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX14.5.sdk/System/Library/Frameworks/CoreFoundation.framework/Headers/CoreFoundation.h:54:
In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX14.5.sdk/System/Library/Frameworks/CoreFoundation.framework/Headers/CFBase.h:21:
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX14.5.sdk/System/Library/Frameworks/CoreFoundation.framework/Headers/CFAvailability.h:169:55: note: expanded from macro 'CF_ENUM'
  169 | #define CF_ENUM(...) __CF_ENUM_GET_MACRO(__VA_ARGS__, __CF_NAMED_ENUM, __CF_ANON_ENUM, )(__VA_ARGS__)
      |                      ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX14.5.sdk/System/Library/Frameworks/CoreFoundation.framework/Headers/CFAvailability.h:134:48: note: expanded from macro '__CF_ENUM_GET_MACRO'
  134 | #define __CF_ENUM_GET_MACRO(_1, _2, NAME, ...) NAME
      |                                                ^
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX14.5.sdk/System/Library/Frameworks/CoreFoundation.framework/Headers/CFAvailability.h:142:75: note: expanded from macro '__CF_NAMED_ENUM'
  142 | #define __CF_NAMED_ENUM(_type, _name)     enum __CF_ENUM_ATTRIBUTES _name : _type _name; enum _name : _type
      |                                                                           ^~~~~~~
1 error generated.

[Radar WebKit Bug Importer]

<rdar://problem/136169538>

[David Kilzer (:ddkilzer)]

Pull request: https://github.com/WebKit/WebKit/pull/33782

[David Kilzer (:ddkilzer)]

Don't need this now.  See:

<https://github.com/WebKit/WebKit/pull/33782#issuecomment-2356963620>