CentOS源代码编译到ksign-publickey.c时出现的问题及解决方法。

原文出处：http://blog.csdn.net/qq174181597/article/details/8178596

想进行源代码内核树的建立，在内核所在目录下make，出现了问题，如下：

[root@....]#make

.......省略n行..........

CHK     include/linux/version.h
CHK     include/linux/utsrelease.h
SYMLINK include/asm -> include/asm-x86
CALL    scripts/checksyscalls.sh
CHK     include/linux/compile.h
CC      crypto/signature/ksign-publickey.o
crypto/signature/ksign-publickey.c:2:17: error: key.h: No such file or directory
crypto/signature/ksign-publickey.c: In function ‘ksign_init’:
crypto/signature/ksign-publickey.c:10: error: ‘ksign_def_public_key’ undeclared (first use in this function)
crypto/signature/ksign-publickey.c:10: error: (Each undeclared identifier is reported only once
crypto/signature/ksign-publickey.c:10: error: for each function it appears in.)
crypto/signature/ksign-publickey.c:11: error: ‘ksign_def_public_key_size’ undeclared (first use in this function)
make[2]: *** [crypto/signature/ksign-publickey.o] Error 1
make[1]: *** [crypto/signature] Error 2
make: *** [crypto] Error 2

解决方法：

#make menuconfig（进入基于文本菜单的配置界面）

1.选择”Enable loadable module support“，选择"Module signature verification (EXPERIMENTAL)"，按”N“取消该选项。

2.回到主菜单（main menu），选择”Cryptographic API“，取消”In-kernel signature checker (EXPERIMENTAL)“即可。