From 203d8f2187bb7f483290e0f8b7b48b152b1d027f Mon Sep 17 00:00:00 2001 From: Ross Burton Date: Thu, 5 Mar 2026 11:33:57 +0000 Subject: [PATCH] configure: make the C99 detection more resiliant autoconf 2.73 will default to C23 by default, which means that the >C99 detection logic in configure.ac will fail because it only handles c11 and c99. Instead of adding c23 to the list and then breaking again in the future, flip the logic around (as suggested by Zack Weinberg) and check explicitly for just c89. Closes #1806. Upstream-Status: Backport [https://gitlab.com/gnutls/gnutls/-/merge_requests/2081] Signed-off-by: Ross Burton --- configure.ac | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/configure.ac b/configure.ac index 740fb6339..c708d8f5e 100644 --- a/configure.ac +++ b/configure.ac @@ -54,9 +54,9 @@ AC_USE_SYSTEM_EXTENSIONS # Require C99 support # AS_CASE([$ac_prog_cc_stdc], - [c11 | c99], [AC_DEFINE([C99_MACROS], 1, [C99 macros are supported])], - [AC_MSG_WARN([[Compiler does not support C99. It may not be able to compile the project.]])] -) + [c89], + [AC_MSG_WARN([[Compiler does not support C99. It may not be able to compile the project.]])], + [AC_DEFINE([C99_MACROS], 1, [C99 macros are supported])]) AM_CONDITIONAL(CROSS_COMPILING, test "$cross_compiling" = yes) -- 2.43.0