Re: other/10777: gcc: unrecognized option `-no-cpp-precomp'

Re: other/10777: gcc: unrecognized option `-no-cpp-precomp'

[Andrew Pinski]

The following reply was made to PR other/10777; it has been noted by GNATS.

From: Andrew Pinski <pinskia@physics.uc.edu>
To: shrao@nyx.net, "Gcc-Bugs@Gcc. Gnu. Org" <gcc-bugs@gcc.gnu.org>
Cc: Andrew Pinski <pinskia@physics.uc.edu>, gcc-gnats@gcc.gnu.org,
   mark@codesourcery.com
Subject: Re: other/10777: gcc: unrecognized option `-no-cpp-precomp'
Date: Wed, 14 May 2003 08:00:27 -0400

 The FSF's gcc does not have cpp-precomp support so that
 is why the option is unrecognized aka it is always
 -no-cpp-precomp.
 Also it is a warning so you can ignore it.
 
 
 Can someone close this bug since it is not a bug.
 
 Thanks,
 Andrew Pinski
 

Re: other/10777: gcc: unrecognized option `-no-cpp-precomp'

[bangerth]

Synopsis: gcc: unrecognized option `-no-cpp-precomp'

State-Changed-From-To: open->closed
State-Changed-By: bangerth
State-Changed-When: Wed May 14 14:10:30 2003
State-Changed-Why:
    Not an FSF gcc problem

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=10777

Re: other/10777: gcc: unrecognized option `-no-cpp-precomp'

[Dara Hazeghi]

The following reply was made to PR other/10777; it has been noted by GNATS.

From: Dara Hazeghi <dhazeghi@yahoo.com>
To: shrao@nyx.net, gcc-gnats@gcc.gnu.org, nobody@gcc.gnu.org
Cc:  
Subject: Re: other/10777: gcc: unrecognized option `-no-cpp-precomp'
Date: Wed, 14 May 2003 00:34:02 -0700

 http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit- 
 trail&database=gcc&pr=10777
 
 Hello,
 
 first, before you e-mail the gcc release manager, you should at least  
 send a message to gcc-bugs@gcc.gnu.org. Mark is responsible for seeing  
 that the releases get out, not for all the problems in gcc. That's why  
 we have a bugs mailing list.
 
 Second, the reason for this behavior is fairly simple. Apple's gcc has  
 something called cpp-precomp which was their old method of precompiled  
 headers. Official gcc releases don't have this option (it is an Apple  
 specific thing, and will be going away soon, since it's now obsolete).
 
 We disable it when building gcc because it has a number of bugs which  
 may cause compilation to fail. Because 99% of the people building gcc  
 on MacOS X will be building it with Apple's gcc, we need to disable  
 cpp-precomp to prevent the builds from failing.
 
 Unfortunately, as seen in your case, because we assume Apple gcc is the  
 compiler being used to build gcc on MacOS X, we assume this option to  
 disable cpp-precomp is available. In your case, to get rid of the  
 warnings, all you have to do is set the CFLAGS environment variable to  
 -O2 -g, ie do setenv CFLAGS "-O2 -g"  before building gcc, and this  
 warning should go away. Hopefully we can come up with a way to automate  
 this in the future.
 
 Dara
 

other/10777: gcc: unrecognized option `-no-cpp-precomp'

[shrao]

>Number:         10777
>Category:       other
>Synopsis:       gcc: unrecognized option `-no-cpp-precomp'
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed May 14 06:36:00 UTC 2003
>Closed-Date:
>Last-Modified:
>Originator:     Shrisha Rao
>Release:        gcc 3.3-prerelease
>Organization:
>Environment:
MacOS X 10.2.6 (Darwin 6.6)
>Description:
When gcc 3.3 is compiled using Apple's gcc 3.1 (December 2002 Developer Tools) it compiles fine with just the usual warnings.  But when it is bootstrapped using itself (i.e., using a gcc 3.3 compiled from Apple's gcc), there is the odd warning message which repeats as often as the flag is used:

gcc: unrecognized option `-no-cpp-precomp'

One example:

gcc   -g -no-cpp-precomp -DHAVE_DESIGNATED_INITIALIZERS=0 -DIN_GCC   -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -Wtraditional -pedantic -Wno-long-long   -DHAVE_CONFIG_H    -I. -I. -I../../gcc-3.3/gcc/gcc -I../../gcc-3.3/gcc/gcc/. -I../../gcc-3.3/gcc/gcc/config -I../../gcc-3.3/gcc/gcc/../include -c insn-recog.c \
  -o insn-recog.o
gcc: unrecognized option `-no-cpp-precomp'

The bootstrap does run to completion nonetheless, and there are no tangible consequences of this warning that I have been able to find.  It still is a wonder why gcc 3.3 does not have -no-cpp-precomp enabled.
>How-To-Repeat:

>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted: