Add a deprecation warning when building with C++17 (#700)

* Add a deprecation warning when building with C++17 * Specify a version when support for C++17 will be removed * Set the default to C++20 --------- Co-authored-by: jmcarcell <[email protected]>
AIDASoft · Nov 8, 2024 · b5cddb7 · b5cddb7
1 parent 706035f
commit b5cddb7
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -34,12 +34,16 @@ endif()
 
 # Set up C++ Standard
 # ``-DCMAKE_CXX_STANDARD=<standard>`` when invoking CMake
-set(CMAKE_CXX_STANDARD 17 CACHE STRING "")
+set(CMAKE_CXX_STANDARD 20 CACHE STRING "")
 
 if(NOT CMAKE_CXX_STANDARD MATCHES "17|20")
   message(FATAL_ERROR "Unsupported C++ standard: ${CMAKE_CXX_STANDARD}")
 endif()
 
+if(CMAKE_CXX_STANDARD EQUAL 17)
+  message(WARNING "C++17 is deprecated and support for it will be removed in v01-03. Please use at least C++20.")
+endif()
+
 # Prevent CMake falls back to the latest standard the compiler does support
 set(CMAKE_CXX_STANDARD_REQUIRED ON)