[llvm] r248963 - Enable -Wdeprecated in the cmake build now that LLVM (& Clang, Polly, and LLD) are -Wdeprecated clean

[David Blaikie via llvm-commits]

Author: dblaikie
Date: Wed Sep 30 18:36:12 2015
New Revision: 248963

URL: http://llvm.org/viewvc/llvm-project?rev=248963&view=rev
Log:
Enable -Wdeprecated in the cmake build now that LLVM (& Clang, Polly, and LLD) are -Wdeprecated clean

This particularly helps enforce the C++ Rule of 5 (for new move ops this
is already an error, but for a type only using C++98 features (copy
ctor/assign, dtor) it is only deprecated, not invalid)

Applying the flag for any GCC compatible compiler - GCC doesn't warn on
the Rule of 5 cases that C++11 deprecates, but it doesn't have other
false positives so far as I could see (compiling with GCC 4.8 didn't
produce any -Wdeprecated warnings I could spot).

Reviewers: aaron.ballman

Differential Revision: http://reviews.llvm.org/D13314

Modified:
    llvm/trunk/cmake/modules/HandleLLVMOptions.cmake

Modified: llvm/trunk/cmake/modules/HandleLLVMOptions.cmake
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/cmake/modules/HandleLLVMOptions.cmake?rev=248963&r1=248962&r2=248963&view=diff
==============================================================================
--- llvm/trunk/cmake/modules/HandleLLVMOptions.cmake (original)
+++ llvm/trunk/cmake/modules/HandleLLVMOptions.cmake Wed Sep 30 18:36:12 2015
@@ -364,7 +364,7 @@ if( MSVC )
 
 elseif( LLVM_COMPILER_IS_GCC_COMPATIBLE )
   if (LLVM_ENABLE_WARNINGS)
-    append("-Wall -W -Wno-unused-parameter -Wwrite-strings" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
+    append("-Wall -W -Wno-unused-parameter -Wwrite-strings -Wdeprecated" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
     append("-Wcast-qual" CMAKE_CXX_FLAGS)
 
     # Turn off missing field initializer warnings for gcc to avoid noise from