Untitled

cobeta@ThinPad:~/linux$ make -j5
***
*** Configuration file ".config" not found!
***
*** Please run some configurator (e.g. "make oldconfig" or
*** "make menuconfig" or "make xconfig").
***
make[1]: *** [/home/cobeta/linux/Makefile:772: .config] Ошибка 1
make: *** [Makefile:234: __sub-make] Ошибка 2
cobeta@ThinPad:~/linux$ make defconfig sm7150.config 
  HOSTCC  scripts/basic/fixdep
  HOSTCC  scripts/kconfig/conf.o
  HOSTCC  scripts/kconfig/confdata.o
  HOSTCC  scripts/kconfig/expr.o
  LEX     scripts/kconfig/lexer.lex.c
/bin/sh: 1: flex: not found
make[3]: *** [scripts/Makefile.host:9: scripts/kconfig/lexer.lex.c] Ошибка 127
make[2]: *** [Makefile:685: defconfig] Ошибка 2
make[1]: *** [/home/cobeta/linux/Makefile:350: __build_one_by_one] Ошибка 2
make: *** [Makefile:234: __sub-make] Ошибка 2
cobeta@ThinPad:~/linux$