Note: Most of this was
taken from the Installation.txt that comes with RTLinux 3.1.
1. Make sure you have
RedHat set up appropriately.
When installing RedHat you need to perform a Custom install and select Development, Kernel Development, Utilities, and Select Individual Packages.
At the Individual Package Selection screen, go to Development --> Languages and select compat-egcs. Next go to Development --> Libraries and select compat-glibc. Select any other packages you wish to install and continue the installation.
2. Download
appropriate files.
Download
RTLinux 3.1 from:
ftp.rtlinux.com/pub/rtlinux/v3/rtlinux-3.1.tar.gz
Download the Linux 2.4.4 kernel from:
ftp.kernel.org/pub/linux/kernel/v2.4/linux-2.4.4.tar.gz
Place the files
linux-2.4.4.tar.gz
rtlinux-3.1.tar.gz
into /var/tmp
3. Unpack the files
rm –rf /usr/src/rtlinux
mkdir /usr/src/rtlinux
cd /usr/src/rtlinux
tar –xzf /var/tmp/linux-2.4.4.tar.gz
tar –xzf /var/tmp/rtlinux-3.1.tar.gz
4. Patch the kernel
cd linux
patch –p1 < /usr/src/rtlinux/rtlinux-3.1/kernel_patch-2.4.4
5. Configure the
kernel
Before configuring the kernel, a line in the Makefile needs to be edited. Open /usr/src/rtlinux/linux/Makefile with your favorite editor. Change the line
CC = $(CROSS_COMPILE)gcc
To
CC = kgcc
Now run (run any one of these)
make config
OR
make menuconfig
OR
make xconfig
Be sure to disable APM
support and select the correct type of CPU.
6. Compile and
install the kernel and modules
make dep
make install
make modules
make modules_install
7. Configure LILO
Edit /etc/lilo.conf and add the following lines:
image=/boot/vmlinuz-2.4.4-rtl
label=rtlinux
read-only
root=/dev/hda1
Note:
replace root=/dev/hda1 with your root filesystem.
Look at the other root= entries in lilo.conf
to find out what this should be.
8. Install LILO and reboot
/sbin/lilo
/sbin/shutdown –r now
Select rtlinux from the RedHat kernel selection screen.
9. Configure and Compile RTLinux
cd /usr/src/rtlinux/rtlinux-3.1
ln –sf /usr/src/rtlinux/linux linux
make config OR make menuconfig OR make xconfig
make dep
make
make devices
make install
10. Post Installation
To be able to run any real time programs, you need to load the RTLinux modules:
rtlinux start
To start RTLinux automatically upon boot (if you select the rtlinux kernel), edit
/etc/rc.d/rc.local and put the following at the end of the file:
if [ `cat /proc/sys/kernel/osrelease` = “2.4.4-rtl” ]; then
/usr/bin/rtlinux start
fi
Note:
In the above code, a single quote ( ‘ ) is NOT used.
The character used is a grave accent ( ` ), which is
above the TAB key on the keyboard.
11. Additional information
Additional information can be found in
/usr/src/rtlinux/rtlinux-3.1/Installation.txt