repair standalone clang builds

Add missing C++ language standard setup for clang standalone build. Patch by Michele Scandale! Differential Revision: https://reviews.llvm.org/D83426
checkedc · Jul 10, 2020 · aa7a5ad · aa7a5ad
1 parent a474d5b
commit aa7a5ad
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/clang/CMakeLists.txt b/clang/CMakeLists.txt
@@ -9,6 +9,10 @@ endif()
 if( CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR )
   project(Clang)
 
+  set(CMAKE_CXX_STANDARD 14 CACHE STRING "C++ standard to conform to")
+  set(CMAKE_CXX_STANDARD_REQUIRED YES)
+  set(CMAKE_CXX_EXTENSIONS NO)
+
   # Rely on llvm-config.
   set(CONFIG_OUTPUT)
   if(LLVM_CONFIG)