--- old/common/autoconf/spec.gmk.in	2013-02-14 16:57:24.468468856 +0100
+++ new/common/autoconf/spec.gmk.in	2013-02-14 16:57:24.378453277 +0100
@@ -282,6 +282,9 @@
 X_LIBS:=@X_LIBS@
 OPENWIN_HOME:=@OPENWIN_HOME@
 
+# The lowest required version of macosx to enforce compatiblity for
+MACOSX_REQUIRED_VERSION=@MACOSX_REQUIRED_VERSION@
+
 # There are two types: CC or CL
 # CC is gcc and others behaving reasonably similar.
 # CL is cl.exe only.
--- old/common/autoconf/toolchain.m4	2013-02-14 16:57:24.878539819 +0100
+++ new/common/autoconf/toolchain.m4	2013-02-14 16:57:24.778522515 +0100
@@ -876,6 +876,10 @@
 fi
 if test "x$OPENJDK_TARGET_OS" = xmacosx; then
     CCXXFLAGS_JDK="$CCXXFLAGS_JDK -DMACOSX -D_ALLBSD_SOURCE"
+    # Adding these macros will make it an error to link to mac APIs newer than OS version 10.7
+    MACOSX_REQUIRED_VERSION=1070
+    AC_SUBST(MACOSX_REQUIRED_VERSION)
+    CCXXFLAGS_JDK="$CCXXFLAGS_JDK -DMAC_OS_X_VERSION_MAX_ALLOWED=\$(MACOSX_REQUIRED_VERSION) -DMAC_OS_X_VERSION_MIN_REQUIRED=\$(MACOSX_REQUIRED_VERSION)" 
 fi
 if test "x$OPENJDK_TARGET_OS" = xbsd; then
     CCXXFLAGS_JDK="$CCXXFLAGS_JDK -DBSD -D_ALLBSD_SOURCE"