$ ELSE
$ IF (P5 .EQS. "64")
$ THEN
-$ POINTER_SIZE = "/POINTER_SIZE=64=ARGV"
+$ POINTER_SIZE = "/POINTER_SIZE=64"
+$ SET NOON
+$ DEFINE /USER SYS$OUTPUT NL:
+$ DEFINE /USER SYS$ERROR NL:
+$ CC /POINTER_SIZE=64=ARGV NL:
+$ IF ($STATUS .AND. %X0FFF0000) .EQ. %X00030000
+$ THEN
+$ ! If we got here, it means DCL complained like this:
+$ ! %DCL-W-NOVALU, value not allowed - remove value specification
+$ ! \64=\
+$ !
+$ ! If the compiler was run, logicals defined in /USER would
+$ ! have been deassigned automatically. However, when DCL
+$ ! complains, they aren't, so we do it here (it might be
+$ ! unnecessary, but just in case there will be another error
+$ ! message further on that we don't want to miss)
+$ DEASSIGN/USER SYS$ERROR
+$ DEASSIGN/USER SYS$OUTPUT
+$ ELSE
+$ POINTER_SIZE = POINTER_SIZE + "=ARGV"
+$ ENDIF
+$ SET ON
$ ARCHD = ARCH+ "_64"
$ LIB32 = ""
$ ELSE