[Minor] Slghtly improve cmake reporting + use -O0 with full debug

cmake/Sanitizer.cmake

         message (FATAL_ERROR "Unknown sanitizer type: ${SANITIZE}")
     endif ()
     message (STATUS "Add sanitizer: ${SANITIZE}")
+    # Disable sanitizing on make stage e.g. for snowball compiler
+    set (ENV{ASAN_OPTIONS} "detect_leaks=0")
+    message (STATUS "Sanitizer CFLAGS: ${CMAKE_C_FLAGS} ${CMAKE_C_FLAGS_${CMAKE_BUILD_TYPE_UC}}")
+    message (STATUS "Sanitizer CXXFLAGS: ${CMAKE_CXX_FLAGS} ${CMAKE_C_FLAGS_${CMAKE_BUILD_TYPE_UC}}")
 endif()

cmake/Toolset.cmake

     set (CMAKE_C_FLAGS_RELEASE         "${CMAKE_C_FLAGS_RELEASE} -O3 ${COMPILER_FAST_MATH} -fomit-frame-pointer")
     set (CMAKE_CXX_FLAGS_RELEASE       "${CMAKE_CXX_FLAGS_RELEASE} -O3 ${COMPILER_FAST_MATH} -fomit-frame-pointer")
 
-    set (CMAKE_C_FLAGS_DEBUG           "${CMAKE_C_FLAGS_DEBUG} -Og ${COMPILER_FAST_MATH} ${COMPILER_DEBUG_FLAGS}")
-    set (CMAKE_CXX_FLAGS_DEBUG         "${CMAKE_CXX_FLAGS_DEBUG} -Og ${COMPILER_FAST_MATH} ${COMPILER_DEBUG_FLAGS}")
+    if (ENABLE_FULL_DEBUG MATCHES "ON")
+        set (CMAKE_C_FLAGS_DEBUG           "${CMAKE_C_FLAGS_DEBUG} -O0 ${COMPILER_DEBUG_FLAGS}")
+        set (CMAKE_CXX_FLAGS_DEBUG         "${CMAKE_CXX_FLAGS_DEBUG} -O0 ${COMPILER_DEBUG_FLAGS}")
+    else()
+        set (CMAKE_C_FLAGS_DEBUG           "${CMAKE_C_FLAGS_DEBUG} -Og  ${COMPILER_DEBUG_FLAGS}")
+        set (CMAKE_CXX_FLAGS_DEBUG         "${CMAKE_CXX_FLAGS_DEBUG} -Og ${COMPILER_DEBUG_FLAGS}")
+    endif()
 else ()
     # Clang flags
     set (COMPILER_DEBUG_FLAGS "-g -glldb -gdwarf-aranges -gdwarf-4")
     set (CMAKE_C_FLAGS_RELWITHDEBINFO      "${CMAKE_C_FLAGS_RELEASE} -O2 ${COMPILER_FAST_MATH} ${COMPILER_DEBUG_FLAGS}")
     set (CMAKE_CXX_FLAGS_RELWITHDEBINFO    "${CMAKE_CXX_FLAGS_RELEASE} -O2 ${COMPILER_FAST_MATH} ${COMPILER_DEBUG_FLAGS}")
 
-    set (CMAKE_C_FLAGS_DEBUG           "${CMAKE_C_FLAGS_DEBUG} -O0 ${COMPILER_FAST_MATH} ${COMPILER_DEBUG_FLAGS}")
-    set (CMAKE_CXX_FLAGS_DEBUG         "${CMAKE_CXX_FLAGS_DEBUG} -O0 ${COMPILER_FAST_MATH} ${COMPILER_DEBUG_FLAGS}")
+    set (CMAKE_C_FLAGS_DEBUG           "${CMAKE_C_FLAGS_DEBUG} -O0 ${COMPILER_DEBUG_FLAGS}")
+    set (CMAKE_CXX_FLAGS_DEBUG         "${CMAKE_CXX_FLAGS_DEBUG} -O0 ${COMPILER_DEBUG_FLAGS}")
 endif()