Index: Makefile
===================================================================
--- Makefile    (revision 19010)
+++ Makefile    (working copy)
@@ -28,7 +28,7 @@
 USE_XZ=                yes
 USE_GSTREAMER1=        yes
 USE_XORG=      xt xdamage xcomposite
-USES=          bison gettext gmake perl5 pkgconfig shebangfix
+USES=          bison compiler gettext gmake perl5 pkgconfig shebangfix
 USE_RUBY=      yes
 RUBY_NO_RUN_DEPENDS=yes
 USE_GNOME=     cairo gnomehier gtk20 gtk30 introspection:build \
@@ -144,6 +144,10 @@

 .include <bsd.port.pre.mk>

+.if ${OSVERSION} >= 1100009 && ${CC} == "cc"
+EXTRA_PATCHES= ${FILESDIR}/extra-Source_JavaScriptCore_runtime_JSCell.h
+.endif
+
 .if ${PERL_LEVEL} >= 501400
 BUILD_DEPENDS+=        p5-Switch>0:${PORTSDIR}/lang/p5-Switch
 .endif
Index: files/extra-Source_JavaScriptCore_runtime_JSCell.h
===================================================================
--- files/extra-Source_JavaScriptCore_runtime_JSCell.h  (revision 0)
+++ files/extra-Source_JavaScriptCore_runtime_JSCell.h  (working copy)
@@ -0,0 +1,12 @@
+--- Source/JavaScriptCore/runtime/JSCell.h.orig        2014-03-06 00:47:38.620499335 +0000
++++ Source/JavaScriptCore/runtime/JSCell.h     2014-03-06 00:48:03.250498156 +0000
+@@ -49,6 +49,9 @@
+     IncludeDontEnumProperties
+ };
+
++template<typename T> void* allocateCell(Heap&);
++template<typename T> void* allocateCell(Heap&, size_t);
++
+ class JSCell {
+     friend class JSValue;
+     friend class MarkedBlock;