[RPM-Spec] Script in %prep

thomas2004ch · 11-18-2013, 04:10 AM

Hi,

I wrote a very simple spec. In the %prep section it looks as follow:

Code:

...
%prep
mkdir -p $RPM_BUILD_ROOT/mytest
mkdir -p /tmp/mytest
...

I can build the spec successfully. But after I installed the rpm I couldn't see any directory of '$RPM_BUILD_ROOT/mytest' and '/tmp/mytest'

Besides, where is the '/tmp/mytest' defined? In the RPM-compiler?

action_owl · 11-18-2013, 09:58 PM

The %prep section is where the build environment for the software is created. AFAIK the prep section is only used for applying software patches.

If you want your files to show up on the target machine you will need to install them to the buildroot in the %install section and list them in the %files section.

When starting out building RPMs I found it helpful to study and rebuild existing RPMs. For example, to download the SRPM for phpMyAdmin and inspect the spec file:

Code:

# sudo yum install yum-utils rpmdevtools
# yumdownloader --source phpMyAdmin
# rpmdev-extract phpMyAdmin-3.5.8.2-1.el6.src.rpm
# vim phpMyAdmin-3.5.8.2-1.el6.noarch/phpMyAdmin.spec

knudfl · 11-18-2013, 11:45 PM

Quote:

after I installed the rpm I couldn't see any directory of '$RPM_BUILD_ROOT/mytest' and '/tmp/mytest'

Besides, where is the '/tmp/mytest' defined? In the RPM-compiler ?

Don't know what you are trying to do :

"rpms/BUILDROOT" will be created automatically. → An 'rpmbuild' function ?
And "rpms/tmp/" is defined in $HOME/.rpmmacros
#13 http://www.linuxquestions.org/questi...1-a-766486/#13

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thomas2004ch · 11-19-2013, 04:02 AM

Quote:

Originally Posted by action_owl

The %prep section is where the build environment for the software is created. AFAIK the prep section is only used for applying software patches.

If you want your files to show up on the target machine you will need to install them to the buildroot in the %install section and list them in the %files section.

When starting out building RPMs I found it helpful to study and rebuild existing RPMs. For example, to download the SRPM for phpMyAdmin and inspect the spec file:

Code:

# sudo yum install yum-utils rpmdevtools
# yumdownloader --source phpMyAdmin
# rpmdev-extract phpMyAdmin-3.5.8.2-1.el6.src.rpm
# vim phpMyAdmin-3.5.8.2-1.el6.noarch/phpMyAdmin.spec

I couldn't find the 'rpmdevtools'. Is this a standard RPM from RH Linux?

And as I run 'yumdownloader --source phpMyAdmin' it failed.

action_owl · 11-19-2013, 08:26 AM

rpmdevtools is available in CentOS 6, I would think it would be available on RH as well. You can try to locate the package with:

Code:

# yum provides "*bin/rpmdev-extract"

phpMyAdmin was probably not the best example because it's part of EPEL and in order to get the source for EPEL packages you have to enable the repository with the SRPMs. Yo might need to this for other repos as well. For example if you have EPEL installed you can edit "/etc/yum.repos.d/epel.repo" and change "enabled=0" to "enabled=1" in the "[epel-source]" repo.

If you get rpmdevtools installed but can't get yumdownloader to cooperate, you can always manually download the SRPMs, for example:

RHEL: http://ftp.redhat.com/pub/redhat/lin...r/en/os/SRPMS/

CentOS: http://vault.centos.org/6.4/os/Source/SPackages/

thomas2004ch · 11-26-2013, 03:51 AM

I am a little bit confused. If the "phpMyAdmin was probably not the best example", maybe you have another better example for me?