Index: Mk/Uses/localbase.mk
===================================================================
--- Mk/Uses/localbase.mk
+++ Mk/Uses/localbase.mk
@@ -15,4 +15,10 @@
 CFLAGS+=	-I${LOCALBASE}/include
 CXXFLAGS+=	-I${LOCALBASE}/include
 LDFLAGS+=	-L${LOCALBASE}/lib
+
+# CONFIGURE_ENV is used by devel/cmake itself (as it does not use CMAKE_ENV
+# when bootstrapping) as well as most ports that depend on it. CMAKE_ENV is for
+# the few ports that manually override and might also use CMAKE_PREFIX_PATH.
+CONFIGURE_ENV+=	CMAKE_PREFIX_PATH="${LOCALBASE}"
+CMAKE_ENV+=	CMAKE_PREFIX_PATH="${LOCALBASE}"
 .endif