message: cmake: add debug flag to fix logging in linux build
  Adding the TESTING cmake flag overwrote the debug flag. That's why the
  debug log feature didn't work for some configurations.
diff: @@ -118,7 +118,7 @@ if(NOT IOS AND NOT ANDROID)
  add_definitions("-Wno-sign-compare")
  endif()
  - set(CMAKE_CXX_FLAGS_DEBUG "-DTESTING")
  + set(CMAKE_CXX_FLAGS_DEBUG "-DTESTING -DDEBUG")
  add_executable(unit_tests_runner
  core/global_include_test.cpp
  