157574 2016-05-11 11:39:50 -0700 webkit is not usable on OS X 10.10 and older due to CF_AVAILABLE usage 2016-05-11 20:02:02 -0700 1 1 1 Unclassified WebKit JavaScriptCore WebKit Nightly Build Unspecified Unspecified NEW https://bugs.webkit.org/show_bug.cgi?id=152720 P2 Normal --- 126492 1 jeremyhu webkit-unassigned ap oldest_to_newest 1191998 0 jeremyhu 2016-05-11 11:39:50 -0700 When building projects that make use of WebKit on older OS versions, CF_AVAILABLE() is unable to expand. Furthermore, these availability macros don't really apply to this install. They only apply when installing the system framework. In file included from /opt/local/include/webkitgtk-4.0/JavaScriptCore/JavaScript.h:31: In file included from /opt/local/include/webkitgtk-4.0/JavaScriptCore/JSContextRef.h:29: In file included from /opt/local/include/webkitgtk-4.0/JavaScriptCore/JSObjectRef.h:31: /opt/local/include/webkitgtk-4.0/JavaScriptCore/JSValueRef.h:139:67: error: expected function body after function declarator JS_EXPORT bool JSValueIsArray(JSContextRef ctx, JSValueRef value) CF_AVAILABLE(10_11, 9_0); ^ /System/Library/Frameworks/CoreFoundation.framework/Headers/CFBase.h:54:34: note: expanded from macro 'CF_AVAILABLE' #define CF_AVAILABLE(_mac, _ios) AVAILABLE_MAC_OS_X_VERSION_##_mac##_AND_LATER ^ <scratch space>:30:1: note: expanded from macro 'AVAILABLE_MAC_OS_X_VERSION_' AVAILABLE_MAC_OS_X_VERSION_10_11_AND_LATER ^ In file included from goawebview.c:27: This was seen on webkit-gtk-2.12.2 on OS X Lion, but the issue applies to Yosemite as well. 1192032 1 ap 2016-05-11 12:17:35 -0700 WebKit trunk supports 10.10 (Yosemite) and above. On 10.10, only Xcode 7 is supported, which includes 10.11 SDK. 1192081 2 jeremyhu 2016-05-11 13:56:47 -0700 Well you might not support it as a firstclass port, but webkit-gtk works fine back as far as Snow Leopard without issue. However, the current sources do *NOT* work on 10.10 either because the CF_AVAILABLE macros aren't being stripped out, so those are getting marked as weak even though the built WebKit obviously contains them. In the past, the CF_AVAILABLE macros have been stripped so they don't break non PLATFORM(COCOA) builds. That is not currently happening here. 1192154 3 jeremyhu 2016-05-11 16:57:10 -0700 The changes in #152720 handle the case for *building* webkit, but I recall that something used to strip these availability macros out of the installed headers. That process is no longer happening.