[Lldb-commits] [lldb] r251107 - Disable the strict-aliasing warnings produced by gcc

[Tamas Berghammer via lldb-commits]

Author: tberghammer
Date: Fri Oct 23 05:34:53 2015
New Revision: 251107

URL: http://llvm.org/viewvc/llvm-project?rev=251107&view=rev
Log:
Disable the strict-aliasing warnings produced by gcc

GCC produce a lot of strict-aliasing warning for the LLDB codebase
what makes reading the compile output very difficult. This change
disable these warnings to reduce the noise as we already ignore them.

We should consider re-enabling the warning if we fix all (or most)
strict-aliasing violation first.

Differential revision: http://reviews.llvm.org/D13981

Modified:
    lldb/trunk/cmake/modules/LLDBConfig.cmake

Modified: lldb/trunk/cmake/modules/LLDBConfig.cmake
URL: http://llvm.org/viewvc/llvm-project/lldb/trunk/cmake/modules/LLDBConfig.cmake?rev=251107&r1=251106&r2=251107&view=diff
==============================================================================
--- lldb/trunk/cmake/modules/LLDBConfig.cmake (original)
+++ lldb/trunk/cmake/modules/LLDBConfig.cmake Fri Oct 23 05:34:53 2015
@@ -210,6 +210,12 @@ if (CXX_SUPPORTS_NO_UNKNOWN_PRAGMAS)
   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-unknown-pragmas")
 endif ()
 
+check_cxx_compiler_flag("-Wno-strict-aliasing"
+                        CXX_SUPPORTS_NO_STRICT_ALIASING)
+if (CXX_SUPPORTS_NO_STRICT_ALIASING)
+  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-strict-aliasing")
+endif ()
+
 # Disable Clang warnings
 check_cxx_compiler_flag("-Wno-deprecated-register"
                         CXX_SUPPORTS_NO_DEPRECATED_REGISTER)