[Lldb-commits] [PATCH] D13981: Disable the strict-aliasing warnings produced by gcc

[Tamas Berghammer via lldb-commits]

tberghammer created this revision.
tberghammer added reviewers: clayborg, brucem.
tberghammer added a subscriber: lldb-commits.

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.

http://reviews.llvm.org/D13981

Files:
  cmake/modules/LLDBConfig.cmake

Index: cmake/modules/LLDBConfig.cmake
===================================================================
--- cmake/modules/LLDBConfig.cmake
+++ cmake/modules/LLDBConfig.cmake
@@ -210,6 +210,12 @@
   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)


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