Setting up RPM Building for SME Server

	Skill level: Developer
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Setting up RPM Building for SME Server

http://www.openfusion.net/linux/mocking_rpms

Mock is a Fedora project that allows you to build RPM packages within a chroot environment, allowing you to build packages for other systems than the one you're running on (e.g. building CentOS 4 32-bit RPMs on a CentOS 5 64-bit host), and ensuring that all the required build dependencies are specified correctly in the RPM spec file.

Prerequisites

• It is recommended that you use the latest CentOS 6 (64bit) version as a base http://mirror.centos.org/centos/6/isos/x86_64/ this has been verified to build for SME 7, 8 & 9 and for i386 &x86_64

• Apply all available updates.

yum update

• You need to have EPEL repository configured as EPELs version of mock will be used

# Enable EPEL for Centos 6
rpm -Uvh http://fr2.rpmfind.net/linux/epel/6/i386/epel-release-6-8.noarch.rpm

• You need to create a new user, for mock will not accept user root for building packages

useradd <username>
passwd <username>

The new user needs to be granted sudo rights

yum install sudo
/usr/sbin/usermod -aG wheel <username>

Edit the file /etc/sudoers:

nano /etc/sudoers

go down and find the following lines:

 ## Allows people in group wheel to run all commands
 # %wheel	ALL=(ALL)	ALL

and remove the hash in front of %wheel so it looks like...

## Allows people in group wheel to run all commands
%wheel	ALL=(ALL)	ALL

Log out as root and login as <username>

So then the installation of mock is just:

Installing Mock

Install mock, make and rpm-build and python-ctypes packages (the latter for better setarch support)

sudo yum --enablerepo=epel install mock python-ctypes
sudo yum install make rpm-build

Add yourself to the 'mock' group that will have now been created

sudo usermod -G mock <username>

The mock package creates an /etc/mock directory with configs for various OS versions (mostly Fedoras). Shad has provided working configurations for SME Server here http://mirror.canada.pialasse.com/contribs/slords/mock/

Copy all the .cfg files into /etc/mock including overwriting the site-defaults.cfg

Testing building environment

You can then run a test by doing:

# e.g. initialise a smeserver-9-x86_64-base chroot environment
$ CONFIG=smeserver-9-x86_64-base
$ mock -r $CONFIG --init
# It might take a while to configure at the "Start: yum update"

which will setup an initial chroot environment using the given config. If that seemed to work (you weren't inundated with error messages), you can try a build: You will need an SRPM, for instance from http://mirror.canada.pialasse.com/releases/testing/9/smeupdates-testing/SRPMS/

# Rebuild the given source RPM within the chroot environment
# usage: mock -r <mock_config> --rebuild /path/to/SRPM e.g.
$ mock -r $CONFIG --rebuild ~/rpmbuild/SRPMS/e-smith-runit-2.4.0-1.el6.sme.src.rpm

If the build succeeds, it drops your packages into the /var/lib/mock/$CONFIG/result directory. If it fails, you can check mock output, the *.log files above for more info, and/or rerun mock with the -v flag for more verbose messaging. If you get "warning: Could not canonicalize hostname: " it can be ignored. This is a DNS resolution error and the easy solution is to add your hostname to /etc/hosts

ls -1 /var/lib/mock/smeserver-9-x86_64/result
build.log
e-smith-runit-2.4.0-1.el6.sme.noarch.rpm
e-smith-runit-2.4.0-1.el6.sme.src.rpm
root.log
state.log

If this works, it is worth grabbing either CVS for one module, or the whole CVS tree using this : http://wiki.contribs.org/Simple_Package_Modification

Normally you make builds from the working directory of the module you are working on, eg ~/rpms/e-smith-runit/sme9:

# Build the given module within the chroot environment
$ cd ~/rpms/e-smith-runit/sme9
$ make mockbuild

# If there is no sme9 directory do the following (to test ability to build only)
$ cd ~rpms/module_name
$ ln -s sme8 devel
$ cd devel
$ make mockbuild

Mock will determine which configuration to use, but you can specify it if wanting to build for a different architecture for instance.

BUILDARCH=i386 make mockbuild

It will determine if this is for SME Server 9 or 8, and the package to build, based on which directory that you are in. The results are put under that directory.

ls -1 ~/rpms/e-smith-runit/sme9/e-smith-runit-2_4_0-2_el6_sme/
build.log
e-smith-runit-2.4.0-2.el6.sme.noarch.rpm
e-smith-runit-2.4.0-2.el6.sme.src.rpm
root.log
state.log

Note if there are any perl directory requirments :

$ rpm -qpl package_name.noarch.rpm |grep perl

Package Build Steps

check out package

cp -a sme8 sme9
rm -rf sme9/CVS
cd sme9
make prep

mv {sourcedir} {newsourcedir}

• example e-smith-base-5.2.0 to e-smith-base-5.4.0

rm -f *.patch

• apply any fixes from spec to tree, only for SME Server packages
• move lib/perl5/site_perl to share/perl5/vendor_perl

tar Jcvf {newsource}.tar.xz {newsourcedir}

vi *.spec

• remove patches and fixes applied directly to tree
• bump version and reset release to 1
• add changelog saying rolling for sme9

make mockbuild

• if this works then we can proceed

rpm -qpl {package-version}_sme/{rpmname}.rpm

• check that files look similar to the sme8 package

These following steps need developer access

They are here for reference, and transparency. They will need to be run on SME Server's build server. You do not need to do this part. (If you have CVS access but not access to the build servers please don't run any of these commands)

cd ..
cvs add sme9
cd sme9

date +%s

• get date for import

vi import.log*

• fix name/version/release and date

cvs add .cvsignore *.spec Makefile import.log sources

• be sure to add any other needed packages

make new-sources FILES=*xz

make commit tag build

Older notes

• To set up mock as used above see Building using Mock
• To checkout packages from CVS see Simplest way to develop patches to submit

• If you have problems on setting up the environment, ask on IRC or Devinfo.

Notes:

• Using the provided .cfg files I have verified smeserver-8-x86_64-base.cfg & smeserver-9-x86_64-base.cfg and managed to build e-smith-runit for SME 9
• the chroot environments are cached, but rebuilding them and checking for updates can be pretty network intensive, so you might want to consider setting up a local repository to pull from. mrepo (available from rpmforge) is pretty good for that.
• there don't seem to be any hooks in mock to allow you to sign packages you've built, so if you do want signed packages you need to sign them afterwards via a rpm --resign $RPMS.
• If you get an error message 'create archive failed cpio: Bad magic' then try 'yum update' as this appears to be a known problem on COS6.