The change to using generated-derived-sources in r13435 broke building of WebKit with Bison 2.1 on the PATH. Bison 2.1 uses grammar.hpp as the name of the header file, while older versions use grammar.cpp.h.
Created attachment 7242 [details] Use the same approach that the .y build rule in JavaScriptCore Xcode project uses to handle Bison 1.28 + 2.1
Comment on attachment 7242 [details] Use the same approach that the .y build rule in JavaScriptCore Xcode project uses to handle Bison 1.28 + 2.1 r=me