gaap@ubuntu:~/linux-toradex$ make colibri_t20_defconfig
#
# configuration written to .config
#
gaap@ubuntu:~/linux-toradex$ make nconfig
HOSTCC scripts/kconfig/nconf.gui.o
In file included from scripts/kconfig/nconf.gui.c:8:0:
scripts/kconfig/nconf.h:18:20: fatal error: curses.h: No such file or directory
compilation terminated.
scripts/Makefile.host:134: recipe for target 'scripts/kconfig/nconf.gui.o' failed
make[1]: *** [scripts/kconfig/nconf.gui.o] Error 1
Makefile:492: recipe for target 'nconfig' failed
make: *** [nconfig] Error 2
I did everything according to the specified development