On Wed, 21 Dec 2022, 19:08 Alejandro Colomar via Gcc, <gcc@gcc.gnu.org> wrote:
> > > On 12/21/22 19:53, Alejandro Colomar wrote: > > Hi Alexander, > > > > On 12/21/22 19:51, Alexander Monakov wrote: > >> > >> > >> On Wed, 21 Dec 2022, Alejandro Colomar via Gcc wrote: > >> > >>> Hi, > >>> > >>> I've long had this wish: an option similar to -std, but which would not > >>> specify the standard. Rather, mark a requirement that the standard be > at > >>> least a version. > >>> > >>> This would be especially useful for libraries, which might for example > require > >>> C99 or C11 to work. They would be able to specify -minstd=c11 in > their pc(5) > >>> file (for use with pkgconf(1)). > >> > >> There's already a standard, portable way to check: > >> > >> #if __STDC_VERSION__ < 201710 > >> #error C17 required > >> #endif > > > > Hmm, not my favourite to stick that in every public header file, but > yes, it's > > portable. > > But yes, I could provide a <project/__compiler.h> "hidden" header that > does all > this stuff, then include it everywhere. :) > And this works for projects that don't use pkg-config, and with all compilers, including existing versions of gcc. I really don't know why you'd want to enforce this outside the source itself, with a separate non-portable tool.
