tools/m4: Case to allow C++20 without error.

2020-05-10 18:07:17 -07:00 · 2020-05-10 18:07:17 -07:00 · b5e1446510
parent 083cd73eb8
commit b5e1446510
1 changed files with 1 additions and 0 deletions
--- a/tools/m4/ax_cxx_compile_stdcxx.m4
+++ b/tools/m4/ax_cxx_compile_stdcxx.m4
@ -48,6 +48,7 @@ AC_DEFUN([AX_CXX_COMPILE_STDCXX], [dnl
  m4_if([$1], [11], [],
        [$1], [14], [],
        [$1], [17], [],
+        [$1], [20], [],
        [m4_fatal([invalid first argument `$1' to AX_CXX_COMPILE_STDCXX])])dnl
  m4_if([$2], [], [],
        [$2], [gnu], [],