[yocto] Compiling kernel 4.4

[SIVA SUBRAMANIAN.P]

Hi,
While compiling linux kernel 4.4 for 96boards, I'm getting below error
even though openssl headers are available in sysroot path.

|   HOSTCC  scripts/selinux/mdp/mdp
| /mnt/home/knagabhirava/hikey/build/tmp-glibc/work-shared/hikey/kernel-source/scripts/extract-cert.c:21:25:
fatal error: openssl/bio.h: No such file or directory
|  #include <openssl/bio.h>
|                          ^
| compilation terminated.

ERROR: Task 6 (/mnt/home/knagabhirava/hikey/build/../meta-96boards/recipes-kernel/linux/linux-96boards_git.bb,
do_compile) failed with exit code '1'

Any idea/pointers?

Regards,
Sivasubramanian