$schemamarkup = get_post_meta(get_the_ID(), 'schemamarkup', true); if(!empty($schemamarkup)) { echo $schemamarkup; }

How to Install Linux Kernel Headers on Fedora Gnu/Linux Distro

GNU/Linux Fedora Installing Kernel Headers Guide

Hi! The Tutorial shows you Step-by-Step How to Install Linux Kernel Headers in Fedora GNU/Linux Desktops.

And the Fedora Kernel Headers contain the C Header Files for the Linux Kernel.

Which offers the various Function and Structure Definitions required when Compiling any Code that Interfaces with the Kernel, such as Kernel Modules or Device Drivers and some User Programs.

Last, possibly to Install a Custom Kernel with Headers you may see: Installing New Kernel from Source.

How to Install Kernel Headers in Fedora - Featured

GNU/Linux Fedora Kernel Headers Installation Guide