On Mon, Apr 26, 2021 at 2:32 PM Joseph Myers <jos...@codesourcery.com> wrote: > > On Mon, 26 Apr 2021, Nick Clifton via Gcc-patches wrote: > > > Hi Guys, > > > > Given that gcc, gdb and now binutils are all now requiring C99 as a > > minimum version of C, are there any objections to updating > > configure.ac to reflect this ? > > This isn't an objection, since upgrading auto* for the toolchain can be > complicated, but note that AC_PROG_CC_C99 is obsolete in Autoconf 2.70 and > instead AC_PROG_CC enables C11 mode if supported. (So moving to the > latest Autoconf and Automake releases would supersede this change.)
But AC_PROG_CC_C99 makes sure that the compiler supports C99, and AC_PROG_CC does not. Christian
