编译linux-4.19.2内核时，make menuconfig时遇到的问题

问题如下：（注意第一行话）

/bin/sh: 1: bison: not found
scripts/Makefile.lib:196: recipe for target ‘scripts/kconfig/zconf.tab.c’ failed
make[1]: *** [scripts/kconfig/zconf.tab.c] Error 127
Makefile:539: recipe for target ‘menuconfig’ failed
make: *** [menuconfig] Error 2

解决方法：
apt-get install bison
apt-get install flex
将这两个软件装好。
参考：
https://blog.csdn.net/skyleemon/article/details/80646726