Linux Kernel build failure.

[JSpra]

I’m getting a build error when attempting to build the linux kernel.

ERROR:

scripts/extract-cert.c:21:10: fatal error: openssl/bio.h: No such file or directory

 #include <openssl/bio.h>

I have followed instructions from https://wiki.st.com/stm32mpu/wiki/Modify,_rebuild_and_reload_the_Linux%C2%AE_kernel

and README.HOW_TO.txt

Get same error when following either document.  I don’t see “openssl�?  included in the kernel source.

 Any suggestion on how to fix this?

Thanks in advance.

[Fee · Accepted solution]

Your host on which you cross-compile the kernel needs the libssl-dev packet. On Ubuntu just install it via

sudo apt-get install libssl-dev

This should solve the error.

[Olivier GALLIEN]

Thanks @Lukas Brückner​ you are right.

@JSpra​ 

The complete package dependence list is available in wiki page https://wiki.st.com/stm32mpu/wiki/PC_prerequisites

• Packages needed for some "Developer Package" use cases:

PC $> sudo apt-get install ncurses-dev libncurses5-dev libncursesw5-dev lib32ncurses5 libssl-dev linux-headers-generic u-boot-tools device-tree-compiler bison flex g++

Hope it help

Olivier

[JSpra]

Looks like I am missing "linux-headers-generic" package. I did not notice it failed to install when I was adding the prerequisites. For some reason I don't have access to server that provides this package. I recently started having other network issues, I assume this this is the cause. Will run this down on my end, sorry to bother you with this.

I appreciate you help!