JavaScriptCore build fails: "YARR_JIT requires YARR"

Qt configured as:
./configure -prefix /home/david/dev/qt-git/ -opensource -shared -fast -javascript-jit -script -no-gif -no-gtkstyle -no-exceptions

build fails at:
g++ -c -m64 -pipe -g -fno-exceptions -Wreturn-type -fno-strict-aliasing -fno-stack-protector -O2 -fvisibility=hidden -fvisibility-inlines-hidden -D_REENTRANT -fPIC -DQT_SHARED -DJSC=QTJSC -Djscyyparse=qtjscyyparse -Djscyylex=qtjscyylex -Djscyyerror=qtjscyyerror -DQT_BUILD_SCRIPT_LIB -DQT_NO_USING_NAMESPACE -DQLALR_NO_QSCRIPTGRAMMAR_DEBUG_INFO -DQT_NO_CAST_TO_ASCII -DQT_ASCII_CAST_WARNINGS -DQT3_SUPPORT -DQT_MOC_COMPAT -DBUILDING_QT_=1 -DNDEBUG -DBUILDING_QT_ -DBUILDING_JavaScriptCore -DBUILDING_WTF -DENABLE_JIT=1 -DENABLE_YARR_JIT=1 -DWTF_USE_JAVASCRIPTCORE_BINDINGS=1 -DWTF_CHANGES=1 -DNDEBUG -DJS_EXPORT= -DJS_EXPORTDATA= -DQT_NO_DEBUG -DQT_CORE_LIB -D_LARGEFILE64_SOURCE -D_LARGEFILE_SOURCE -I../../mkspecs/linux-g++-64 -I. -I../../include/QtCore -I../../include -I../3rdparty/javascriptcore/JavaScriptCore -I../3rdparty/javascriptcore -I../3rdparty/javascriptcore/JavaScriptCore/assembler -I../3rdparty/javascriptcore/JavaScriptCore/bytecode -I../3rdparty/javascriptcore/JavaScriptCore/bytecompiler -I../3rdparty/javascriptcore/JavaScriptCore/debugger -I../3rdparty/javascriptcore/JavaScriptCore/interpreter -I../3rdparty/javascriptcore/JavaScriptCore/jit -I../3rdparty/javascriptcore/JavaScriptCore/parser -I../3rdparty/javascriptcore/JavaScriptCore/profiler -I../3rdparty/javascriptcore/JavaScriptCore/runtime -I../3rdparty/javascriptcore/JavaScriptCore/wrec -I../3rdparty/javascriptcore/JavaScriptCore/wtf -I../3rdparty/javascriptcore/JavaScriptCore/wtf/unicode -I../3rdparty/javascriptcore/JavaScriptCore/yarr -I../3rdparty/javascriptcore/JavaScriptCore/API -I../3rdparty/javascriptcore/JavaScriptCore/ForwardingHeaders -Igenerated -I../../include/QtScript -I.rcc/release-shared -I/home/david/dev/qt-git/src/3rdparty/javascriptcore/WebKit/qt/Api -I../3rdparty/javascriptcore/JavaScriptCore/pcre -I/home/david/dev/qt-git/src/3rdparty/javascriptcore/WebKitBuild/Release/JavaScriptCore/tmp -I../3rdparty/javascriptcore/JavaScriptCore -I../3rdparty/javascriptcore/JavaScriptCore/parser -I../3rdparty/javascriptcore/JavaScriptCore/bytecompiler -I../3rdparty/javascriptcore/JavaScriptCore/debugger -I../3rdparty/javascriptcore/JavaScriptCore/runtime -I../3rdparty/javascriptcore/JavaScriptCore/wtf -I/home/david/dev/qt-git/src/script/../3rdparty/javascriptcore/JavaScriptCore/unicode -I../3rdparty/javascriptcore/JavaScriptCore/interpreter -I../3rdparty/javascriptcore/JavaScriptCore/jit -I../3rdparty/javascriptcore/JavaScriptCore/profiler -I../3rdparty/javascriptcore/JavaScriptCore/wrec -I../3rdparty/javascriptcore/JavaScriptCore/API -I../3rdparty/javascriptcore/JavaScriptCore/bytecode -I../3rdparty/javascriptcore/JavaScriptCore/assembler -I../3rdparty/javascriptcore/JavaScriptCore/generated -I. -Iparser -I.moc/release-shared -o obj/release/pcre_exec.o ../3rdparty/javascriptcore/JavaScriptCore/pcre/pcre_exec.cpp
In file included from ../3rdparty/javascriptcore/JavaScriptCore/config.h:26,
from ../3rdparty/javascriptcore/JavaScriptCore/pcre/pcre_compile.cpp:44:
../3rdparty/javascriptcore/JavaScriptCore/wtf/Platform.h:840:2: error: #error "YARR_JIT requires YARR"
In file included from ../3rdparty/javascriptcore/JavaScriptCore/config.h:26,
from ../3rdparty/javascriptcore/JavaScriptCore/pcre/pcre_exec.cpp:45:
../3rdparty/javascriptcore/JavaScriptCore/wtf/Platform.h:840:2: error: #error "YARR_JIT requires YARR"
make[1]: *** [obj/release/pcre_compile.o] Error 1
make[1]: *** Se espera a que terminen otras tareas....
make[1]: *** [obj/release/pcre_exec.o] Error 1
make[1]: se sale del directorio `/home/david/dev/qt-git/src/script'
make: *** [sub-script-make_default-ordered] Error 2