Initial community commit

Src/external_dependencies/openmpt-trunk/doc/release_branches.md

@@ -0,0 +1,30 @@
+branching release branches
+==========================
+
+ 1. adjust buildbot configuration by copying current trunk configuration to a
+    new branch configuration and replace `trunk` with the branch version (i.e.
+    `127`), remember to also adjust url of nondist externals
+ 2. add release build configuration to the buildbot branch configuration file,
+    adjust buildbot config of release build configurations to output to the
+    separate auto-release directory and change the archive format from 7z to zip
+    for windows binaries
+ 3. branch the nondist externals repository
+ 4. branch the current trunk HEAD (`$VER` is the branch version):
+    `svn copy -m "branch OpenMPT-$VER" https://source.openmpt.org/svn/openmpt/trunk/OpenMPT https://source.openmpt.org/svn/openmpt/branches/OpenMPT-$VER`
+ 5. update versions in trunk
+    `https://source.openmpt.org/svn/openmpt/trunk/OpenMPT`:
+     1. set OpenMPT version in `common/versionNumber.h` to
+        `1.$(($VER + 1)).00.01`
+     2. run `build/update_libopenmpt_version.sh bumpminor`
+     3. run `build/update_libopenmpt_version.sh bumpltabi`
+     4. update version numbers in `build/svn/do_libopenmpt_release.sh` and
+        `build/svn/do_libopenmpt_release_rc.sh`
+ 6. update versions in branch
+    `https://source.openmpt.org/svn/openmpt/branches/OpenMPT-$VER`:
+     1. set OpenMPT version in `common/versionNumber.h` to
+        `1.$VER.00.$MINORMINOR+1`
+     2. run `build/update_libopenmpt_version.sh bumpprerel`
+ 7. add versioned libopenmpt release script for new branch which copies release
+    packages into place
+ 8. update buildbot scripts that copy OpenMPT update information into place
+ 9. update branch release date on libopenmpt trunk changelog