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| layout | title | date | tags | excerpt | categories | ||||
|---|---|---|---|---|---|---|---|---|---|
| post | Building Simple RPM Packages | 2019-09-23 15:00:00 -0400 |
|
A very simple exercise to build a basic RPM package | linux rpm packaging |
A very simple exercise to build a basic RPM package. We're not going to dive into package signing, or some of the lower level topics of packaging RPM's - rather, our objective for now is to simply generate a file and drop it on the filesystem.
In this case, we don't care about the platform, the OS release, or the architecture.
Install dependencies
{% highlight bash %}
$ yum install gcc rpm-build
rpm-devel rpmlint make python
bash coreutils diffutils patch
rpmdevtools
{% endhighlight %}
Sample Spec File
{% highlight bash %} Name: local-release Version: 2019.09 Release: 8 Summary: local patching cycle release License: GPL URL: https://example.com BuildArch: noarch
%description Local release: 2019.09.2
%build cat > local_release <<EOF 2019.09.8 EOF
%install install -m 0775 -d $RPM_BUILD_ROOT/etc install -m 0644 local_release $RPM_BUILD_ROOT/etc/local_release
%clean rm -rf $RPM_BUILD_ROOT
%files /etc/local_release
%doc %changelog
- Mon Sep 23 2019 Linux Team linux-team@example.com
- Release cycle 2019.09 {% endhighlight %}
Save this file as local-release.spec
Setup build tree
{% highlight bash %} $ rpmdev-setuptree {% endhighlight %}
This will result in a structure like this: {% highlight bash %} $ tree rpmbuild/
rpmbuild/ ├── BUILD ├── BUILDROOT ├── RPMS ├── SOURCES ├── SPECS └── SRPMS
{% endhighlight %}
Build the RPM
{% highlight bash %} $ rpmbuild -ba local-release.spec {% endhighlight %}
This will result in: {% highlight bash %} rpmbuild/RPMS/noarch/local-release-2019.09-8.noarch.rpm {% endhighlight %}
Install & Validate
{% highlight bash %} $ yum localinstall rpmbuild/RPMS/noarch/local-release-2019.09-8.noarch.rpm $ cat /etc/local_release {% endhighlight %}