On Fri, 12 May 2023, 07:02 Po Lu via Gcc, <gcc@gcc.gnu.org> wrote: > Jason Merrill <ja...@redhat.com> writes: > > > You shouldn't have to change any of those, just configure with CC="gcc > > -fwhatever". > > If it were so simple... > > Many Makefiles come with a habit of using not CC_FOR_BUILD, but just > `cc', to build programs which are run on the build machine. > > These programs are intended to be as portable as possible (naturally, > since Autoconf does not configure for the build machine). As a result, > they are typically written in the subset of ANSI C that will compile > with almost any C compiler, which is exactly what will cause problems > with GCC's proposed new defaults. >
Then they should not use implicit int and implicit function declarations. You've made your opinion clear. It has been noted.
