s390(x)

s390 is 31-bit-address/32-bit-data and s390x is 64 bit computing architecture. s390(x) is big endian and used in IBM mainframe computers which is also known as IBM System z.

Building your application for s390(x) architecture

To build a package for s390(x) architecture in Fedora, use s390-koji command:

$ s390-koji build --scratch rawhide srpm_pkg1

The above command will start a scratch build of package srpm_pkg1 against Fedora rawhide for s390 and s390x architectures. Use “s390-koji --help” in console to see all available options.

To build against other Fedora branches (e.g. F23, F24), specify specific branch name to s390-koji in argument:

s390-koji build --scratch F24 srpm_pkg1

To package application exclusively for s390(x) archiecture, use ExclusiveArch tag in RPM spec file

ExclusiveArch:  s390, s390x

Example

In Secondary Architectures section, we saw how to get/create iprutils srpm as an example. Now, you already have srpm (src.rpm) file of iprutils. The following example will demonstrate how to build an application for s390(x) architecture from srpm:

# Initiate iprutils package build for s390(x) architecture
$ s390-koji build --scratch rawhide iprutils-2.4.11.1-1.fc25.src.rpm 
  Created task: 2183374
  Task info: http://s390.koji.fedoraproject.org/koji/taskinfo?taskID=2183374
  ....

For each build, a Task ID is created in s390 koji. You can view build status and it’s log by going to the url provided in Task info.

Viewing koji builds

Builds specific to s390(x) are hosted at http://s390.koji.fedoraproject.org/. UI is very similar to primary koji.

Reaching out for help

If you face any difficulty reach out to us for help:

• On libera by joining channel #fedora-s390x
• Send an email to s390x@lists.fedoraproject.org mailing list
• Get s390(x) machine access

More documentation

More Fedora s390(x) specific details can be found at Fedora Project wiki

Authors: Jarek Prokop, Jaroslav Prokop, Nick Dirschel, Pavel Valena, Ron Olson