Difference between revisions of "CDT/Obsolete/release engineering"

Revision as of 17:00, 19 January 2015

What do we build today?

CDT is currently built as an update site, archived in a master zip file.

To install CDT:

1. Download the master zip file and put it somewhere on your machine.
2. Fire up Eclipse
3. Help->Software Updates
4. On the Available Features tab, select Manage sites...
5. Add... in the master zip as an Archive...
6. Under CDT Main Features select the one you want. C/C++ Development Tools is the main one. The SDK adds in the schemas and source for building extensions to the CDT. The C/C++ Development Platform is the Tools without the GNU toolchain support.
7. You can install other neat things from the CDT Optional Features category.

This master zip has everything, including:

• CDT Platform Feature - includes editor, search, builders, launch, debug, user documentation
• CDT Runtime Feature - superset of platform feature that adds gnu toolchain integrations for build/debug
• CDT SDK Feature - superset of runtime that adds source and extension point schemas
• GDB Hardware Debugging - provides a launch configuration for launching gdb to do hardware debugging.
• XL C/C++ Compiler Support - provides an error parser and managed build support for IBM's XL C/C++ compilers.
• LR Parser - provides a parser for the ISO/IEC 9899:1999 variant of the C programming language (aka C99) and the C++ programming language, generated from a grammar using the LPG parser generator. The grammar can be reused and extended to create your own parser for variants on the C programming language.
• Unified Parallel C Support - Provides support for the Unified Parallel C programming language. Provides parsing/indexing infrastructure and language definition, allowing the UPC language to be recognized by CDT. Requires the LR parser feature.
• CDT Utilities - provides utilities for C/C++ Development Tools
• CDT Testing Feature - includes all test plugins required for running automated JUnit tests

Building CDT master headlessly with Tycho/Maven

CDT master is built from git using Maven+Tycho (as of CDT 8). Running a headless build is straightforward. (Within the IDE, plugins are automatically built.) Note that Tycho requires Maven 3.0. You can download it directly from Apache.

Building CDT

1. mkdir cdt-releng ; cd cdt-releng
2. git clone git://git.eclipse.org/gitroot/cdt/org.eclipse.cdt.git
3. pushd org.eclipse.cdt
4. mvn clean install
5. popd

Add -Dmaven.skip.test if you don't want maven to run the tests.

The generated p2 repository lives under: releng/org.eclipse.cdt.repo/target/repository/ or compressed at: releng/org.eclipse.cdt.repo/target/org.eclipse.cdt.repo.zip

How do we run the build? How often do we build?

We use several scripts to kick off our builds. There is one for every release stream we build against in /home/www/tools/cdt/scripts/ on the Eclipse build machine (build.eclipse.org, running Linux/PPC):

These scripts setup the staging area on the build machine for the build.

Builds for CDT 8.0 and more recent are run using Maven.

Scripts for CDT 7.X and earlier check out the latest org.eclipse.cdt.releng plugin in their respective stream. It then runs build.sh and build.xml (in org.eclipse.cdt.releng) where majority of the build logic resides. We rely on the plugins in org.eclipse.releng.basebuilder to run our builds. We use different versions of the basebuilder for various stream builds. More information can be found on http://wiki.eclipse.org/Platform-releng-basebuilder. During the build process, features and plugins are tagged in CVS with the build timestamp. Once the build is completed, it is signed, (JUnit) tested, and made available in the | CDT download area .

Builds against older streams are available upon request.

Miscellaneous release checklist

This is a list of things that need to be done at some point before a release.

• A release record must be created for the release (by project leads).
  • This can be done much in advance to notify users of upcoming releases
• Update all the feature versions to the upcoming release number. All feature versions should match the release; on the other hand plugins are only bumped to their own next version if they have changes.
• Update all p2.inf file to point to the p2 repo. Right now there is only one that has an update site: releng/org.eclipse.cdt-feature/p2.inf
• Optionally copy the new and noteworthy to the user documentation in the git repo, doc/org.eclipse.cdt.doc.user/concepts/cdt_c_whatsnew.htm
  • This makes the documentation grow substantially. Instead, we can opt to simply include the latest link to the N&N on the web
• Add version to Bugzilla
• Add next target milestone to Bugzilla (if known)

How do we release builds?

Steps for the RC1 milestone

1. Create a branch from master for the release e.g., cdt_8_5.
2. Create a new location for the release on the build machine. E.g.,
   • Log on to build.eclipse.org
   • cd downloads/tools/cdt/builds
   • mkdir 8.5
3. Modify the root pom.xml file to point to a new location for the release. E.g.,
   • <repo-path>tools/cdt/builds/8.5/nightly</repo-path>
   • This property is use in releng/org.eclipse.cdt.repo/pom.xml as part of property cdt-download-dir
   • Commit this change to the release branch (not master)
4. Make sure the simultaneous release cdt file, in the simrel git repo, points to the correct location
5. Create a new HIPP job to build the new branch
   • Optionally re-use the oldest build branch if it is no longer needed
6. Perform general milestones steps below
7. Notify the cdt-dev list about the situation and mention that bug fixes should go in both master and the branch

Steps for milestones

1. See if any steps of the miscellaneous release checklist needs to be done
2. Log on to build.eclipse.org
   • full shell access is not granted to everyone, usually project-leads have that access
3. cd downloads/tools/cdt/builds
   • this builds directory contains the nightly builds and is not mirrored
   • the nightly builds are put there by our Hudson jobs when using the 'production' maven profile (see releng/org.eclipse.cdt.repo/pom.xml)
4. Copy the latest successful nightly build for the current planned release to its milestone location. E.g., for 8.5 RC3:
   • cp -R 8.5/nightly luna/milestones/sr1-rc3
5. Update the two composite*.xml files to add the new milestone
   • This is essential for the new build to be picked up by the Simultaneous release
   • This will allow users to use the same update site (http://download.eclipse.org/tools/cdt/builds/luna/milestones) to access the new milestone
   • To allow users to downgrade in case of an issue, we keep the two latest milestones in that file
6. Get the corresponding zip file from the HIPP build. This cannot be accessed from the drive so we use wget. E.g.,
   • cd luna/milestones/sr1-rc3
   • Note that we could also unzip this file to create the p2 update site instead of copying it above from the nightly
   • wget https://hudson.eclipse.org/cdt/job/cdt-8.5/lastSuccessfulBuild/artifact/releng/org.eclipse.cdt.repo/target/org.eclipse.cdt.repo.zip
   • mv org.eclipse.cdt.repo.zip cdt-8.5rc3.zip
7. Notify the cdt-dev list that the build was posted. Mention the different addresses:
   • p2 repo: http://download.eclipse.org/tools/cdt/builds/luna/milestones/
   • zip file: http://download.eclipse.org/tools/cdt/builds/luna/milestones/sr1-rc3/cdt-8.5rc3.zip
   • The commit on which the build was made (can be found by different means, but should be listed at https://hudson.eclipse.org/cdt/job/cdt-8.5/lastSuccessfulBuild/)

Steps during Quiet week

• These steps assume that RC4 is available by the above steps

Should ONLY be done with RC4 as the mirrors will trigger right away
Should be done early during quiet week to give enough time for mirrors to sync (can be done as soon as RC4 is released)

1. Log on to build.eclipse.org
2. cd downloads/tools/cdt/
3. Copy the RC4 build into the release location (releases/[release_name]). E.g., for 8.5:
   • mkdir releases/8.5
   • cp -R builds/luna/milestones/sr1-rc4 releases/8.5/r
4. Rename and move zip file
   • mv releases/8.5/cdt-8.5rc4.zip releases/8.5/cdt-8.5.0.zip
5. Make build 'invisible' until release day
   • mv releases/8.5/r/artifacts.jar releases/8.5/r/artifacts.jar.tmp
   • mv releases/8.5/r/content.jar releases/8.5/r/content.jar.tmp

Morning of the release

1. Verify we get a GO on the cross-project-ussues-dev mailing list
2. Make the release visible
   • Copy the two composite*.xml file of the previous release to this release and update them
     • cp releases/8.4/composite*.xml releases/8.5
     • Manually update both the files to change the name of the release ("repository name" entry")
   • mv releases/8.5/r/content.jar.tmp releases/8.5/r/content.jar
   • mv releases/8.5/r/artifacts.jar.tmp releases/8.5/r/artifacts.jar
3. Tag the release (it is best to wait until the day of release in case of re-spins)
4. Update the website (index.php, downloads.php), the website can be modified using this git repo: https://git.eclipse.org/c/www.eclipse.org/cdt.git/
5. Notify the cdt-dev list
6. Update new and noteworthy on the wiki. Also update the link to it in the main CDT wiki page. And the new in CDT page.
7. Update wiki pages if necessary:
   • Getting started
   • Contributing
   • Policy (especially API tooling section)
   • Using Git with CDT
8. Update applicable Hudson jobs to build master against the next supported Eclipse platform e.g. At the sr2 release move the base line to the target definition for the next simultaneous release