I was trying to build a git hub source code "imx_usb_loader" using Visual Studio 2019 to fix my kindle. It is showing the following error.
Severity Code Description Project File Line Suppression State Error LNK2001 unresolved external symbol _sdp_init_ops imx_uart C:\Users\Account1\Downloads\Kindle\imx_usb_loader-master\msvc\imx_loader_config.obj 1