SBR600 Project - Release 0.3 :: How My Package Works

Hello,

I thought that it can be useful if I explain about my spec file and describe the major parts of this file for more clarification. It is simple. If the Arch is ARM, it follows the lines bellow. If the Arch is not ARM, it continues as a regular kernel package like before.

You can download my spec file from this link:  SPEC File

I am going to explain the major parts. I took the following lines from spec file (explanations are after commands which are started with #:

%prep

%setup -q

mkdir -p tmp

#Here, I made a temporary file for saving module files for later use. Modules files #are created by kernel and we will use that with dracut to make initramfs or #ramdisk.

%build

make ARCH=arm omap3_beagle_defconfig

#configuration of kernel source for a particular architecture, which is ARM in #this case, and select the config file. In this case, I selected #omap3_beagle_defconfig for my ARM board.

make clean

make uImage

#Compile the kernel. If you are testing on your own computer (different #architecture than ARM), you should use CROSS COMPILE

make modules

#Compile kernel modules

make modules_install INSTALL_MOD_PATH=tmp

#Install the modules into tmp directory that I mentioned above for later use.

%install

rm -rf $RPM_BUILD_ROOT

mkdir -p %{buildroot}/boot

#Prepare /boot directory for installing kernel and initramfs

cp arch/arm/boot/uImage %{buildroot}/boot/uImage-%{version}

#Copy the compiled kernel to the /boot directory with proper name.

ln -f %{buildroot}/boot/uImage-%{version} %{buildroot}/boot/uImage.bin

#Keep track of each installation of kernel by using ln command and make the last #one as a default for kernel

#mkdir -p %{buildroot}/%{_sysconfdir}

#cp -p %{SOURCE1} %{buildroot}/%{_sysconfdir}

#These two lines are not usable for release 0.3, but I mentioned here because I #used in previous versions. Because I wanted to make a small initramfs, I used a #small version of dracut.conf for using during the installation of package. So, I #imported dracut.conf by SOURCE1 and copied into the /etc directory.

mkdir -p %{buildroot}/lib/modules/%{version}

#Make a directory for copying the modules from tmp directory to proper #destinations.

cp -p -r tmp/lib/modules/%{version}/* %{buildroot}/lib/modules/%{version}

#Copy modules

%post

dracut -H -f /boot/initramfs-%{version}.img %{version}

#Making initramfs by dracut for last kernel

ln -f /boot/initramfs-%{version}.img /boot/initramfs.img

#keep track of each initramfs by using ln command and select the last one as a #default.

I hope you enjoyed from this article.

Best regards,

Khosro Taraghi