From deleeuw@stat.ucla.edu  Wed Oct 23 21:42:25 2002
From: deleeuw@stat.ucla.edu (Jan de Leeuw)
Date: Wed, 23 Oct 2002 13:42:25 -0700
Subject: configure/build issue with gcc 3.2.0 (PR#2176)
In-Reply-To: <Pine.GSO.4.10.10210231251570.13575-100000@fisher.stat.ucla.edu>
Message-ID: <EFE6A9B8-E6C7-11D6-BA4F-003065A21C86@stat.ucla.edu>

Yes, there are no longer warnings in gcc-3.3

On Wednesday, Oct 23, 2002, at 12:55 US/Pacific, Roger Peng wrote:

> I noticed this on the GCC website, regarding the not-yet-released gcc
> 3.2.1:
>
> * The method of constructing the list of directories to be searched for
> header files has been revised. If a directory named by a -I option is a
> standard system include directory, the option is ignored to ensure that
> the default search order for system directories and the special  
> treatment
> of system header files are not defeated.
>
> -roger
> _______________________________
> UCLA Department of Statistics
> rpeng@stat.ucla.edu
> http://www.stat.ucla.edu/~rpeng
>
> On Wed, 16 Oct 2002, ripley@stats.ox.ac.uk wrote:
>
>> This has been discussed on R-devel, and it is definitely not an R bug
>> as there are workarounds stated in the R-admin manual.
>>
>> Setting CPPFLAGS= (nothing) does avoid this except in the gnome  
>> module. It
>> was intended to put that explicitly in the R-admin manual for 1.6.0,  
>> but
>> it was not done in time (it is now there for R-patched).
>>
>> We are told that this is fixed in the alphas of gcc 3.3.  Once it is  
>> clear
>> exactly which versions of gcc are affected we may add a workaround in  
>> the
>> configure script.
>>
>> On Wed, 16 Oct 2002 rjvbertin@hotmail.com wrote:
>>
>>> There is an incompatibility between R's configure/build process, and  
>>> gcc 3.2.0 (and maybe earlier).
>>> Gcc 3.2.0 includes -I/usr/local/include by default, on my system  
>>> (default configuration), and cpp0
>>> issues a warning when this flag is issued additionally by the user  
>>> (= R's configure). This warning
>>> ends up in the dependency sections of the Makefile that are  
>>> generated "automagically". The 1st
>>> occurrence is line 105 of src/appl/Makefile .
>>>
>>> The only way around it that I found, other than removing all  
>>> -I/usr/local/include in all Makefiles is to manually add
>>> -Wp,-w, a gcc/cpp argument that suppresses all cpp warnings. It also  
>>> has the effect of not aborting
>>> a compilation as soon as a specified header file is *not* found :(
>>> If you decide to leave -I/usr/local/include and add -Wp,-w for gcc 3  
>>> compilers, I would suggest
>>> *not* adding -Wp,-w if -fsyntax-only is also given, to not interfere  
>>> with requested syntax-checking.
>>> (that would probably require to call the compiler from a wrapper  
>>> script, something I already do.)
>>>
>>> Rene Bertin
>>>
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>>> .-.-.-.-.-.-
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>>>
>>
>> -- 
>> Brian D. Ripley,                  ripley@stats.ox.ac.uk
>> Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
>> University of Oxford,             Tel:  +44 1865 272861 (self)
>> 1 South Parks Road,                     +44 1865 272860 (secr)
>> Oxford OX1 3TG, UK                Fax:  +44 1865 272595
>>
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>> r-devel mailing list -- Read  
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>>
>
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> ._._._._
>
>
===
Jan de Leeuw; Professor and Chair, UCLA Department of Statistics
US mail: 8142 Math Sciences Bldg, Box 951554, Los Angeles, CA 90095-1554
phone (310)-825-9550;  fax (310)-206-5658;  email: deleeuw@stat.ucla.edu
                  www: http://www.stat.ucla.edu/~deleeuw
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configure/build issue with gcc 3.2.0 (PR#2176)
Jan de Leeuw