1)get kernel source code from longriver:
cd /pbdf/ISO/redhat/betas/rhel5.5rc2/Server/SRC/DVD //RHEL5.5rc2 source code
2) Mount -o loop RHEL5.4-Server-20090819.0-SRPMS-DVD.iso /mnt
Cd /mnt/SRPM
[root@rx2660-1 SRPMS]# find * | grep kernel
kernel-2.6.18-164.el5.src.rpm //this is the kernel source codes
Rpm -ivh kernel-2.6.18-164.el5.src.rpm //will get kernel source code and patches in SOURCE folder, and a spec in SPEC folder
3) rpmbuild -ba --target=x86_64 kernel-2.6.spec //do everything
rpmbuild -bp --target=ia64 kernel-2.6.spec //only unpack the kernel and apply the patches.will put all of things into BUILD/kernel-2.6.18 folder
4)cd /usr/src/redhat/BUILD/kernel-2.6.18/linux-2.6.18.ia64
vi Makefile //modify EXTRAVERSION to add joe characters
5) make menuconfig // add ncurses-devel rpm package
6) make all //create the kernel image. Pay attention to a "make rpm" command
7)make modules_install //in /usr/src/redhat/BUILD/kernel-2.6.18/linux-2.6.18.ia64 folder
//create /lib/modules/2.6.18-prep-joe folder and build ->/usr/src/redhat/BUILD/kernel-2.6.18/linux-2.6.18.ia64
8)make install //copy vmlinuz-2.6.18-prep-joe System.map-2.6.18-prep-joe to /boot folder.
//copy initrd-2.6.18-prep-joe.img to /boot/efi/efi/redhat folder.
9)modify elilo.conf file //move vmlinuz-2.6.18-prep-joe from /boot to /boot/efi/efi/redhat folder
Exmaple: elilo.conf
prompt
timeout=20
relocatable
default=linux-joe
image=vmlinuz-2.6.18-194.el5
label=linux
initrd=initrd-2.6.18-194.el5.img
read-only
append="rhgb quiet root=LABEL=/1"
image=vmlinuz-2.6.18-prep-joe
label=linux-joe
initrd=initrd-2.6.18-prep-joe.img
read-only
append="rhgb quiet root=LABEL=/1"
10)make distclean //clean
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