linuxheaders make

root@Ubuntu-riscv64:/usr/src/linux-5.14# make  ARCH=riscv  headers_install
  INSTALL ./usr/include
root@Ubuntu-riscv64:/usr/src/linux-5.14# make  ARCH=riscv  headers        
root@Ubuntu-riscv64:/usr/src/linux-5.14# make  ARCH=riscv  headers
root@Ubuntu-riscv64:/usr/src/linux-5.14# make  ARCH=riscv  menuconfig
  HOSTCC  scripts/kconfig/lxdialog/inputbox.o
/bin/sh: 1: scripts/basic/fixdep: Exec format error
make[1]: *** [scripts/Makefile.host:112: scripts/kconfig/lxdialog/inputbox.o] Error 126
make[1]: *** Deleting file 'scripts/kconfig/lxdialog/inputbox.o'
make: *** [Makefile:625: menuconfig] Error 2
root@Ubuntu-riscv64:/usr/src/linux-5.14#

root@Ubuntu-riscv64:/usr/src/linux-5.14# make ARCH=riscv headers_check
=================== WARNING ===================
Since Linux 5.5, 'make headers_check' is no-op,
and will be removed after Linux 5.15 release.
Please remove headers_check from your scripts.
===============================================
root@Ubuntu-riscv64:/usr/src/linux-5.14# 

重新下份代码

root@Ubuntu-riscv64:/usr/src/linux-5.14# make  ARCH=riscv  menuconfig
  HOSTCC  scripts/basic/fixdep
  UPD     scripts/kconfig/mconf-cfg
  HOSTCC  scripts/kconfig/mconf.o
  HOSTCC  scripts/kconfig/lxdialog/checklist.o
  HOSTCC  scripts/kconfig/lxdialog/inputbox.o
  HOSTCC  scripts/kconfig/lxdialog/menubox.o
  HOSTCC  scripts/kconfig/lxdialog/textbox.o
  HOSTCC  scripts/kconfig/lxdialog/util.o
  HOSTCC  scripts/kconfig/lxdialog/yesno.o
  HOSTCC  scripts/kconfig/confdata.o
  HOSTCC  scripts/kconfig/expr.o
  LEX     scripts/kconfig/lexer.lex.c
/bin/sh: 1: flex: not found
make[1]: *** [scripts/Makefile.host:9: scripts/kconfig/lexer.lex.c] Error 127
make: *** [Makefile:625: menuconfig] Error 2
root@Ubuntu-riscv64:/usr/src/linux-5.14# lscpu
Architecture:        riscv64
Byte Order:          Little Endian
CPU(s):              4
On-line CPU(s) list: 0-3
Thread(s) per core:  4
Core(s) per socket:  1
Socket(s):           1
L1d cache:           32 KiB
L1i cache:           32 KiB
L2 cache:            2 MiB