[petsc-dev] Compiling C code with C compiler

[Satish Balay]

There is clang and clang++ - but still they insist on throwing this warning.

When I invoke clang++ - I want c++. So I'm not sure whats so ambiguous
that they should throw this warning.

And what does this depricate mean? That  'clang++ foo.c' will create C code?

Then why have both clang and clang++?

satish

On Mon, 4 Apr 2011, Barry Smith wrote:

> 
>    configure.log ????
> 
>    What about passing the compiler option -x C++? Or maybe you are already doing that but I would't know because you didn't send configure.log 
> 
>     It's bad enough when our ignorant users don't send necessary configure.log files but you?
> 
>    Barry
> 
> On Apr 4, 2011, at 8:33 PM, Sean Farley wrote:
> 
> > When specifying --with-clanguage=C++ (as required by sieve) all C code (any .c file) is still compiled with the C++ compiler. This behavior is deprecated as clang will warn you:
> > 
> > clang: warning: treating 'c' input as 'c++' when in C++ mode, this behavior is deprecated
> > 
> > C is not a subset of C++ and treats structs very differently than C++. This should really be handled correctly but I can't read the conf/rules file no more than I can read Greek.
> > 
> > Sean
> > <make.log>
> 
>