Add sanitizer options to build system

cmake/Sanitizers.cmake

@@ -0,0 +1,51 @@
+function(enable_sanitizers project_name)
+  if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU" OR CMAKE_CXX_COMPILER_ID MATCHES ".*Clang")
+    set(SANITIZERS "")
+
+    option(ENABLE_SANITIZER_ADDRESS "Enable address sanitizer" OFF)
+    if(ENABLE_SANITIZER_ADDRESS)
+      list(APPEND SANITIZERS "address")
+    endif()
+
+    option(ENABLE_SANITIZER_LEAK "Enable leak sanitizer" OFF)
+    if(ENABLE_SANITIZER_LEAK)
+      list(APPEND SANITIZERS "leak")
+    endif()
+
+    option(ENABLE_SANITIZER_UNDEFINED_BEHAVIOR "Enable undefined behavior sanitizer" OFF)
+    if(ENABLE_SANITIZER_UNDEFINED_BEHAVIOR)
+      list(APPEND SANITIZERS "undefined")
+    endif()
+
+    option(ENABLE_SANITIZER_THREAD "Enable thread sanitizer" OFF)
+    if(ENABLE_SANITIZER_THREAD)
+      if("address" IN_LIST SANITIZERS OR "leak" IN_LIST SANITIZERS)
+        message(WARNING "Thread sanitizer does not work with Address and Leak sanitizer enabled")
+      else()
+        list(APPEND SANITIZERS "thread")
+      endif()
+    endif()
+
+    option(ENABLE_SANITIZER_MEMORY "Enable memory sanitizer" OFF)
+    if(ENABLE_SANITIZER_MEMORY AND CMAKE_CXX_COMPILER_ID MATCHES ".*Clang")
+      message(WARNING "Memory sanitizer requires all the code (including libc++) to be MSan-instrumented otherwise it reports false positives")
+      if("address" IN_LIST SANITIZERS
+         OR "thread" IN_LIST SANITIZERS
+         OR "leak" IN_LIST SANITIZERS)
+        message(WARNING "Memory sanitizer does not work with Address, Thread and Leak sanitizer enabled")
+      else()
+        list(APPEND SANITIZERS "memory")
+      endif()
+    endif()
+
+    list(JOIN SANITIZERS "," LIST_OF_SANITIZERS)
+  endif()
+
+  if(LIST_OF_SANITIZERS)
+    if(NOT "${LIST_OF_SANITIZERS}" STREQUAL "")
+      target_compile_options(${project_name} INTERFACE -fsanitize=${LIST_OF_SANITIZERS})
+      target_link_options(${project_name} INTERFACE -fsanitize=${LIST_OF_SANITIZERS})
+    endif()
+  endif()
+
+endfunction()