[gentoo-dev] inherit nowarn

[gentoo-dev] inherit nowarn

[Spider]

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well, this is a little RFC...

Since (according to the gcc FAQ, and "common sense" ) the flags -Wall
and other extra warnings, pedantic and so on would requires more
time/output to work, I'm suggesting a simple(?) eclass to recursively
parse a source tree, match all "Makefile" and "makefile" and strip out
extra warning flags from them.

Why? Simple speed/convenience in many cases.
Example, mozilla currently does a loooot of bad warnings due to gcc 3.1
incompabilities (deprecated headers)

that sort of thing could be fixed with a "inherit nowarn" and
"strip_warnings()" 

quoting gcc faq:

  Note  that  using -pedantic or -Wreturn-type can cause an explosion in
   the  amount of memory needed for template-heavy C++ code, such as
code
   that  uses STL. Also note that -Wall includes -Wreturn-type, so if
you
   use -Wall you will need to specify -Wno-return-type to turn it off.

one way would be to add "-Wnoall" (not sure aobut this) and others would
be to simply match "pedantic" "Wall" "Wdeprecated" and add a
"Wno-deprecated" to kill all warnings.

ideas on this approach please?

//Spider



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Re: [gentoo-dev] inherit nowarn

[Paul de Vrieze]

On Friday 07 June 2002 04:27, Spider wrote:
>
> one way would be to add "-Wnoall" (not sure aobut this) and others would
> be to simply match "pedantic" "Wall" "Wdeprecated" and add a
> "Wno-deprecated" to kill all warnings.
>
> ideas on this approach please?

I like the second, if you mean to say that pedantic, Wall, etc will be deleted 
from the build flags. Not using warnings is in normal cases a good thing (not 
when it goes wrong). Maybe an option to put warnings on (not remove them) in 
ebuild would be apropriate for debugging.

Paul

-- 
Paul de Vrieze
Junior Researcher
Mail: pauldv@cs.kun.nl
Homepage: http://www.devrieze.net