Build/Misc: Add ASan CMake flag

Allow to enable/disable Address Sanitizer in Clang and GCC from CMake flag "ASAN" of type Boolean. It can be enabled passing -DASAN=TRUE to CMake.

(cherry picked from commit 580f40769c)

cmake/compiler/clang/settings.cmake

@@ -36,6 +36,24 @@ if(WITH_COREDEBUG)
   message(STATUS "Clang: Debug-flags set (-g3)")
 endif()
 
+if(ASAN)
+  target_compile_options(trinity-compile-option-interface
+    INTERFACE
+      -fno-omit-frame-pointer
+      -fsanitize=address
+      -fsanitize-recover=address
+      -fsanitize-address-use-after-scope)
+
+  target_link_options(trinity-compile-option-interface
+    INTERFACE
+      -fno-omit-frame-pointer
+      -fsanitize=address
+      -fsanitize-recover=address
+      -fsanitize-address-use-after-scope)
+
+  message(STATUS "Clang: Enabled Address Sanitizer")
+endif()
+
 # -Wno-narrowing needed to suppress a warning in g3d
 # -Wno-deprecated-register is needed to suppress 185 gsoap warnings on Unix systems.
 # -Wno-deprecated-copy needed to suppress a warning in g3d

cmake/compiler/gcc/settings.cmake

@@ -48,6 +48,24 @@ if( WITH_COREDEBUG )
   message(STATUS "GCC: Debug-flags set (-g3)")
 endif()
 
+if(ASAN)
+  target_compile_options(trinity-compile-option-interface
+    INTERFACE
+      -fno-omit-frame-pointer
+      -fsanitize=address
+      -fsanitize-recover=address
+      -fsanitize-address-use-after-scope)
+
+  target_link_options(trinity-compile-option-interface
+    INTERFACE
+      -fno-omit-frame-pointer
+      -fsanitize=address
+      -fsanitize-recover=address
+      -fsanitize-address-use-after-scope)
+
+  message(STATUS "GCC: Enabled Address Sanitizer")
+endif()
+
 if (BUILD_SHARED_LIBS)
   target_compile_options(trinity-compile-option-interface
     INTERFACE

cmake/showoptions.cmake

@@ -104,6 +104,13 @@ if ( HELGRIND )
   add_definitions(-DHELGRIND)
 endif()
 
+if ( ASAN )
+  message("")
+  message(" *** ASAN - WARNING!")
+  message(" *** Please note that this is for DEBUGGING WITH ADDRESS SANITIZER only!")
+  add_definitions(-DASAN)
+endif()
+
 if ( PERFORMANCE_PROFILING )
   message("")
   message(" *** PERFORMANCE_PROFILING - WARNING!")