1 --- a/arch/arm/boot/compressed/decompress.c
2 +++ b/arch/arm/boot/compressed/decompress.c
3 @@ -50,6 +50,7 @@ extern char * strstr(const char * s1, co
4 #ifdef CONFIG_KERNEL_XZ
5 #define memmove memmove
7 +extern char * strstr(const char *, const char *);
8 #include "../../../../lib/decompress_unxz.c"