Re: Testing for unknown flags in different compilers

[Bob Friesenhahn]

On Wed, 19 Feb 2014, Dale Visser wrote:

> I have been working on a changes whereby an autoconf user can invoke a macro 
> like
>
> AC_WARN_ADD([-Wextra])
>
> to add user-specified flags to the compiler/linker invocations. Ideally we 
> would like

I don't think that it is a particularly good idea to enable any 
warning options by default in a package unless the warnings are likely 
to indicate that the code the developer should have already perfected 
is somehow faulty (e.g. unexpected interface definition or missing 
prototype) on the system it is being built on.

Usually only the developers of a package are interested in seeing and 
fixing warnings.  Warnings are only a cause for concern (usually undue 
concern) for others.

There are many people who build packages from source code besides the 
package developers.

Bob
--
Bob Friesenhahn
address@hidden, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/