make include/linux/version.h and make symlinks: This creates the include/linux/version.h file and the include/asm symlink. mkdir $LFS/usr/include/asm and cp include/asm/* $LFS/usr/include/asm: This copies the platform-specific assembler kernel header files to $LFS/usr/include/asm. cp -R include/linux $LFS/usr/include: This command copies the cross-platform kernel header files to $LFS/usr/include.