What is spec file in RPM?

What is spec file in RPM?

The spec file, short for specification file, defines all the actions the rpmbuild command should take to build your application, as well as all the actions necessary for the rpm command to install and remove the application. Each source RPM should have the necessary spec file for building a binary RPM.

What are source RPMs?

A source RPM captures the source code and patches as they were at RPM build time. On RPM-based systems (CentOS, Red Hat Enterprise Linux, Oracle Linux, and many more) source RPMs are RPM files that contain a tarball of source code, patches, auxiliary files that are used during the build process, and a .

What are the basic components of RPM?

RPM Components

  • Date, time, version, release, and environment (such as Intel or zSeries)
  • Description of the packed components, including the following: names, size, installation paths, permissions, owners, general security checks, and file contents.
  • Reference to other components.
  • a signature to verify authenticity.

How do I write a RPM spec file?

In a shell prompt, go into the buildroot and create a new spec file for your package. This creates a new spec file called eject. spec in the ~/rpmbuild/SPECS directory. For more information on creating a new spec file with rpmdev-newspec , run the rpmdev-newspec –help command.

How do you create a binary RPM from a source RPM?

  1. Install rpm-build Package. To build an rpm file based on the spec file that we just created, we need to use rpmbuild command.
  2. RPM Build Directories.
  3. Download Source Tar File.
  4. Create the SPEC File.
  5. Create the RPM File using rpmbuild.
  6. Verify the Source and Binary RPM Files.
  7. Install the RPM File to Verify.

How do I apply a RPM patch?

HowTo Create A Patch File For A RPM

  1. 1 Get A Base Copy Of The Original Source Tree.
  2. 2 Make a Copy of the Original Source Tree.
  3. 3 Make Changes.
  4. 4 Use diff to Create the Patch File.
  5. 5 Update the RPM Spec File to Apply the Patch.
  6. 6 Build the RPM.

What is rpm distribution?

RPM Package Manager (RPM) (originally Red Hat Package Manager, now a recursive acronym) is a free and open-source package management system. RPM was intended primarily for Linux distributions; the file format is the baseline package format of the Linux Standard Base.

What is the syntax of RPM spec file?

RPM spec file syntax 1 Spec Header. The rpm .spec header contains the important version, source, patch, requires, and buildrequires information for the particular package (s) to be built. 2 %prep. The %prep section follows all package definitions. 3 %clean. There is no need in %clean section in RPM5. 4 Other Conventions. 5 Resources.

What is the first RPM package to install?

The file /home/mirek/rpmbuild/RPMS/x86_64/hello-world-1-1.x86_64.rpm is your first RPM package. It can be installed in the system and tested. This chapter is about source code and creating software, which are a necessary background for an RPM Packager.

What does%files mean in RPMs?

The %files section specifies the list of files provided by this RPM and their full path location on the end user’s system. Therefore, the listing for the bello file we are installing is /usr/bin/bello, or, with RPM Macros, % {_bindir}/% {name}. Within this section, you can indicate the role of various files using built-in macros.

What rpm macros are needed in the%files section?

Common “advanced” RPM Macros needed in the %files section are as follows: This identifies the file listed as a LICENSE file and it will be installed and labeled as such by RPM. Example: %license LICENSE This identifies the file listed as documentation and it will be installed and labeled as such by RPM.