as a workaround, mark packages which are only for host as ADK_BROKEN

package/cmake/Makefile

@@ -12,6 +12,8 @@ PKG_SECTION:=		lang
 PKG_URL:=		http://www.cmake.org/
 PKG_SITES:=		http://www.cmake.org/files/v2.8/
 
+PKG_CFLINE_CMAKE:=	depends on ADK_BROKEN
+
 include $(TOPDIR)/mk/host.mk
 include $(TOPDIR)/mk/package.mk