On 1/6/26 14:16, Bruno Haible wrote:
- AC_PROG_CXX should not change the CXX variable.
- AC_PROG_CXX([98]) should not change the CXX variable.
- AC_PROG_CXX([11]) should try the -std=gnu++11 option and, if it is needed
and it works, add it to the CXX variable.
- AC_PROG_CXX([17]) should try the -std=gnu++17 option and, if it is needed
and it works, add it to the CXX variable.
- AC_PROG_CXX([20]) should try the -std=gnu++20 option and, if it is needed
and it works, add it to the CXX variable.
- AC_PROG_CXX([23]) should try the -std=gnu++23 option and, if it is needed
and it works, add it to the CXX variable.
- AC_PROG_CXX([26]) should try the -std=gnu++26 option and, if it is needed
and it works, add it to the CXX variable.
This sounds like a good improvement to Autoconf. cc'ing bug-autoconf so
that it gets recorded there. For Autoconf readers: the thread starts here:
https://lists.gnu.org/r/bug-gnulib/2026-01/msg00030.html
