sanitariu:

make kernel_menuconfig - for kernel configuration
does not work correctly. It was working before some releases.
make menuconfig is working okay.
The error is:
HOSTLD scripts/kconfig/mconf
/usr/lib/gcc/x86_64-pc-linux-gnu/9.2.0/../../../../x86_64-pc-linux-gnu/bin/ld: scripts/kconfig/lxdialog/checklist.o: undefined reference to symbol 'keypad'
/usr/lib/gcc/x86_64-pc-linux-gnu/9.2.0/../../../../x86_64-pc-linux-gnu/bin/ld: /lib64/libtinfow.so.6: error adding symbols: DSO missing from command line
collect2: error: ld returned 1 exit status
make[4]: *** [scripts/Makefile.host:111: scripts/kconfig/mconf] Error 1

Seems like somewhere is missing -ltinfo or similar linking.
Problem is not my OS because make menuconfig is working and we have
dialog menus.

This is tested on latest openwrt
Step to reproduce:

1. Download openwrt
2. do make kernel_menuconfig