Standardize header guards

[Sam TH]

On Sat, May 19, 2001 at 03:11:29AM +0100, Joseph S. Myers wrote:
> On Fri, 18 May 2001, Sam TH wrote:
> 
> > I used GCC_FILENAME_H everywhere, except where there was likely to be
> > a namespace conflict, for example, with files named lex.h, and then I
> > used GCC_DIR_FILENAME_H.  For the fortran directory, since they had
> > all previously had _f_ in the header guards, I used GCC_F_FILENAME_EXT
> > throughout.  
> > 
> > There were a few I didn't change.  limit[xy].h have header guards that
> > have to have the same name as various defines in the system limits.h,
> > so those can't be changed.  Also, the header guard in glimits.h was
> > more complicated enough that given the problems with the other limits
> > files, I didn't change it.  
> 
> The changes to limitx.h, limity,h, the various float.h versions and
> ginclude/*.h are all bogus.  The include guards on these headers must be
> within the ISO C reserved namespace (see subclause 7.1.3 in ISO/IEC
> 9899:1999).
> 
> I suggest submitting a patch that changes only those headers that are part 
> of GCC but are not installed anywhere.  For installed headers you need to 
> consider the ISO C namespace and possibly other interactions.

Ok, the attached patch should do just that.  I've removed everything
that I had changed in limit*.h, all the config/float*.h, and all the
ginclude/*.h changes.  I couldn't find anything else that had been
installed on my system, and there wasn't a good way to see in the
makefiles what was installed.  

Is there a better way to find out which headers are installed?
           
sam th --- sam@uchicago.edu --- http://www.abisource.com/~sam/
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