+dnl Remove -L/usr/lib/? from LDFLAGS and LIBS
+LIB_REMOVE_USR_LIB(LDFLAGS)
+LIB_REMOVE_USR_LIB(LIBS)
+LIB_REMOVE_USR_LIB(KRB5_LIBS)
+
+dnl Remove -I/usr/include/? from CFLAGS and CPPFLAGS
+CFLAGS_REMOVE_USR_INCLUDE(CFLAGS)
+CFLAGS_REMOVE_USR_INCLUDE(CPPFLAGS)