From: Casey Bodley <cbodley@redhat.com>
Date: Wed, 10 Aug 2022 17:59:56 +0000 (-0400)
Subject: cmake: enforce minimum compiler versions for c++20
X-Git-Tag: v18.0.0~290^2
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=4dc6ad6ee5b3146b9198769e0606f31dcf00a1a0;p=ceph.git

cmake: enforce minimum compiler versions for c++20

Signed-off-by: Casey Bodley <cbodley@redhat.com>
---

diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index b301c720f42..f22ff7b2b9f 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -115,6 +115,9 @@ if(COMPILER_SUPPORTS_REDUNDANT_MOVE)
   add_compile_options($<$<COMPILE_LANGUAGE:CXX>:-Wredundant-move>)
 endif()
 if(CMAKE_CXX_COMPILER_ID STREQUAL GNU)
+  if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS 11) # require >= gcc-11
+    message(FATAL_ERROR "C++20 support requires a minimum GCC version of 11.")
+  endif()
   if(MINGW)
     # The MINGW headers are missing some "const" qualifiers.
     add_compile_options($<$<COMPILE_LANGUAGE:CXX>:-fpermissive>)
@@ -133,6 +136,9 @@ if(CMAKE_CXX_COMPILER_ID STREQUAL GNU)
     endif()
   endif()
 elseif(CMAKE_CXX_COMPILER_ID STREQUAL Clang)
+  if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS 12) # require >= clang-12
+    message(FATAL_ERROR "C++20 support requires a minimum Clang version of 12.")
+  endif()
   set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_EXPORTS_C_FLAG}")
   string(APPEND CMAKE_LINKER_FLAGS " -rdynamic -export-dynamic ${CMAKE_EXE_EXPORTS_C_FLAG}")
   string(PREPEND CMAKE_CXX_FLAGS_DEBUG "-g ")