Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!cs.utexas.edu!usc!apple!motcsd!hpda!hpcuhb!hpcllla!hpclisp!hpclscu!shankar
From: shankar@hpclscu.HP.COM (Shankar Unni)
Newsgroups: comp.lang.c++
Subject: Re: CC -U or -Y options?
Message-ID: <1000026@hpclscu.HP.COM>
Date: 11 Sep 89 05:05:52 GMT
References: <6590243@hplsla.HP.COM>
Organization: Hewlett-Packard Calif. Language Lab
Lines: 16

> Does anybody know what the -U or -Y options do?

-Uarg   is passed on to cpp, and is the same as saying

  #undef arg

at the top of your source.

-Y is an AT&T'ism for specifying the path to various components. CC only
looks at -Yp,...  , and treats the rest of the argument after the first ","
as a prefix for "cpp". All -Y options are passed on to the C compiler
driver.
-----
Shankar Unni                                   E-Mail: 
Hewlett-Packard California Language Lab.     Internet: shankar@hpda.hp.com
Phone : (408) 447-5797                           UUCP: ...!hplabs!hpda!shankar