unrecognized command line option'-Wint-conversion'


I have a project that works perfectly well in the environment of legato 18.6.1.
Now the project is replaced by legato 16.10.4.
Compile error (arm-poky-linux-gnueabi-gcc: error: unrecognized command line option’-Wint-conversion’)
Is it because I added’- Wno - error = int - conversion’to the compilation options of the project?
How can I modify it to make the project compile successfully in legato 16.10.4