On Wed, May 10, 2023 at 12:09:10AM +0200, Björn Persson wrote:
> Florian Weimer wrote:
> > I am going to explore a way to land -Werror=implicit-int
> > -Werror=implicit-function-declaration among the default compiler flags.
> > There's a bit of an issue because the C++ front end warns on
> > those flags, so we need another -specs= kludge that is incompatible with
> > Clang.
>
> It sounds like those parameters should be added only to CFLAGS, not to
> CXXFLAGS.
>
> __global_compiler_flags already contains things that cause warnings
> from the Ada and Fortran compilers. The Ada packages get the warning
> “'-Werror=' argument '-Werror=format-security' is not valid for Ada”
> over and over. It doesn't break any builds but it's annoying noise in
> the build logs.
GCC 13 has a solution for that, one can add
-Wno-complain-wrong-lang
to
-Werror=format-security
etc. and avoid such warnings (that some compiler option is only appropriate
for a subset of GCC languages and it is compiling some other language).
Jakub
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