commit 04f2c4b1990859676dc2f7f6f72c4b6b2065c644
author Brad King <brad.king@kitware.com> Wed Aug 16 13:43:46 2023 +0000
committer Kitware Robot <kwrobot@kitware.com> Wed Aug 16 09:44:48 2023 -0400
tree 014fd97fad9d07a9f4cf9b071c42b896a28d23b9
parent 56a9c6e27e361d0ca1b70342e1415d09e3a31356
parent 65288eb92a4f0753340df11acb55134d603663d1

Merge topic 'clang_c23'

65288eb92a Clang: use -std=c23 for Clang 18+

Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: scivision <michael@scivision.dev>
Merge-request: !8716

Modules/Compiler/Clang-C.cmake

diff --git a/Modules/Compiler/Clang-C.cmake b/Modules/Compiler/Clang-C.cmake
index 1b765ad..480a5de 100644
--- a/Modules/Compiler/Clang-C.cmake
+++ b/Modules/Compiler/Clang-C.cmake
@@ -48,7 +48,10 @@
     set(CMAKE_C17_EXTENSION_COMPILE_OPTION "-std=gnu17")
   endif()
 
-  if(CMAKE_C_COMPILER_VERSION VERSION_GREATER_EQUAL 9.0)
+  if(CMAKE_C_COMPILER_VERSION VERSION_GREATER_EQUAL 18.0)
+    set(CMAKE_C23_STANDARD_COMPILE_OPTION "-std=c23")
+    set(CMAKE_C23_EXTENSION_COMPILE_OPTION "-std=gnu23")
+  elseif(CMAKE_C_COMPILER_VERSION VERSION_GREATER_EQUAL 9.0)
     set(CMAKE_C23_STANDARD_COMPILE_OPTION "-std=c2x")
     set(CMAKE_C23_EXTENSION_COMPILE_OPTION "-std=gnu2x")
   endif()