[clang] aa7a5ad - repair standalone clang builds

[Saleem Abdulrasool via cfe-commits]

Author: Saleem Abdulrasool
Date: 2020-07-10T09:36:27-07:00
New Revision: aa7a5ad56b6028e0963e1a8d45b4e82f3f6bc70e

URL: https://github.com/llvm/llvm-project/commit/aa7a5ad56b6028e0963e1a8d45b4e82f3f6bc70e
DIFF: https://github.com/llvm/llvm-project/commit/aa7a5ad56b6028e0963e1a8d45b4e82f3f6bc70e.diff

LOG: 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

Added: 
    

Modified: 
    clang/CMakeLists.txt

Removed: 
    


################################################################################
diff  --git a/clang/CMakeLists.txt b/clang/CMakeLists.txt
index 83c30528499c..7f8e0718c2eb 100644
--- 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)