[releng] Prep repo for CDT 12.6.0 development (#1478)

Author: jonahgraham

NewAndNoteworthy/CDT-12.6.md

@@ -0,0 +1,23 @@
+# Release Notes and New & Noteworthy page
+
+This is the New & Noteworthy page for CDT 12.6 which is part of Eclipse 2026-09 Simultaneous Release
+
+In addition to changes in CDT's own repo, please see the [changelog of CDT LSP](https://github.com/eclipse-cdt/cdt-lsp/blob/main/CHANGELOG.md).
+
+---
+
+# Release Notes
+
+# API Changes, current and planned
+
+## Breaking API changes
+
+Please see [CHANGELOG-API](CHANGELOG-API.md) for details on the breaking API changes in this release as well as future planned API changes.
+
+# Noteworthy Issues and Pull Requests
+
+See [Noteworthy issues and PRs](https://github.com/eclipse-cdt/cdt/issues?q=is%3Aclosed+label%3Anoteworthy+milestone%3A12.6.0) for this release in the issue/PR tracker.
+
+# Bugs Fixed in this Release
+
+See GitHub milestone for CDT [![12.6.0](https://img.shields.io/github/milestones/issues-total/eclipse-cdt/cdt/24)](https://github.com/eclipse-cdt/cdt/milestone/24?closed=1) and CDT LSP [![3.7.0](https://img.shields.io/github/milestones/issues-total/eclipse-cdt/cdt-lsp/11)](https://github.com/eclipse-cdt/cdt-lsp/milestone/11?closed=1)

NewAndNoteworthy/README.md

@@ -2,6 +2,7 @@
 
 What's new and noteworthy in:
 
+- [CDT 12.6/2026-06](CDT-12.6.md)
 - [CDT 12.5/2026-06](CDT-12.5.md)
 - [CDT 12.4/2026-03](CDT-12.4.md)
 - [CDT 12.3/2025-12](CDT-12.3.md)

RELEASING.md

@@ -20,23 +20,23 @@ Prepare main branch for next release
 - in the root pom.xml update comparator.repo, api-baseline.repo, api-baseline.repo.simrel, help-docs-eclipserun-repo, and simrel-site with the correct URLs based on what was used above in the target files/setup files
 - Update versions to CDT.
     - Do a global find/replace, for example:
-    - 12.4.0-SNAPSHOT -> 12.5.0-SNAPSHOT
-    - 12.4.0.qualifier -> 12.5.0.qualifier
+    - 12.5.0-SNAPSHOT -> 12.6.0-SNAPSHOT
+    - 12.5.0.qualifier -> 12.6.0.qualifier
     - the above two can be done quickly as the chance of a false positive is very low, after applying them, search for remaining 12.1.0 and 12.1 strings in the codebase and update them - being careful as some of those search results should not be changed. Version ranges in dependencies can be done now, or handled with "update dependency version" as above
     - Usefule commands for performing these updates:
 ```
 # Once updated, run the now updated commands:
 CDT_ROOT=$PWD # update if you are not in CDT's root
-find $CDT_ROOT -type f -name pom.xml -exec sed -i s/12.4.0-SNAPSHOT/12.5.0-SNAPSHOT/g {} \;
-find $CDT_ROOT -type f -name feature.xml -exec sed -i s/12.4.0.qualifier/12.5.0.qualifier/g {} \;
-find $CDT_ROOT -type f -name MANIFEST.MF -exec sed -i 's/Bundle-Version: 12.4.0.qualifier/Bundle-Version: 12.5.0.qualifier/g' {} \;
+find $CDT_ROOT -type f -name pom.xml -exec sed -i s/12.5.0-SNAPSHOT/12.6.0-SNAPSHOT/g {} \;
+find $CDT_ROOT -type f -name feature.xml -exec sed -i s/12.5.0.qualifier/12.6.0.qualifier/g {} \;
+find $CDT_ROOT -type f -name MANIFEST.MF -exec sed -i 's/Bundle-Version: 12.5.0.qualifier/Bundle-Version: 12.6.0.qualifier/g' {} \;
 find \
     $CDT_ROOT/debug/org.eclipse.cdt.debug.application/plugin.properties \
     $CDT_ROOT/debug/org.eclipse.cdt.debug.application/plugin.properties \
     $CDT_ROOT/debug/org.eclipse.cdt.debug.application.product/debug.product \
     $CDT_ROOT/doc/org.eclipse.cdt.doc.isv/pom.xml \
     $CDT_ROOT/remote/org.eclipse.remote.doc.isv/pom.xml \
-    -type f -exec sed -i s/12.4.0/12.5.0/g {} \;
+    -type f -exec sed -i s/12.5.0/12.6.0/g {} \;
 ```
 - At the beginning of the calendar year, or on the first edit to `**/*.adoc` files, update the copyright end year in `doc/org.eclipse.cdt.doc.user/adoc-headers.txt` and run `releng/scripts/do_generate_asciidoc.sh` to propagate the change to all the asciidoc files.
 - run check_code_cleanliness to make sure that everything looks good `docker run --rm -it -v $(git rev-parse --show-toplevel):/work -w /work/$(git rev-parse --show-prefix) quay.io/eclipse-cdt/cdt-infra:latest releng/scripts/check_code_cleanliness.sh` - if version bumps are needed, see "bump bundle versions" below

build/org.eclipse.cdt.autotools-feature/feature.xml

@@ -12,7 +12,7 @@
 <feature
       id="org.eclipse.cdt.autotools"
       label="%featureName"
-      version="12.5.0.qualifier"
+      version="12.6.0.qualifier"
       provider-name="%provider"
       plugin="org.eclipse.cdt.autotools.ui"
       license-feature="org.eclipse.license"

build/org.eclipse.cdt.autotools.docs/META-INF/MANIFEST.MF

@@ -2,7 +2,7 @@ Manifest-Version: 1.0
 Bundle-ManifestVersion: 2
 Bundle-Name: %bundleName
 Bundle-SymbolicName: org.eclipse.cdt.autotools.docs;singleton:=true
-Bundle-Version: 12.5.0.qualifier
+Bundle-Version: 12.6.0.qualifier
 Bundle-Vendor: %provider
 Bundle-Localization: plugin
 Require-Bundle: org.eclipse.help;bundle-version="[3.10.500,4)",

build/org.eclipse.cdt.autotools.docs/pom.xml

@@ -17,11 +17,11 @@
   <parent>
     <groupId>org.eclipse.cdt</groupId>
     <artifactId>cdt-parent</artifactId>
-    <version>12.5.0-SNAPSHOT</version>
+    <version>12.6.0-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
-  <version>12.5.0-SNAPSHOT</version>
+  <version>12.6.0-SNAPSHOT</version>
   <artifactId>org.eclipse.cdt.autotools.docs</artifactId>
   <packaging>eclipse-plugin</packaging>
 

build/org.eclipse.cdt.core.autotools-feature/feature.xml

@@ -12,7 +12,7 @@
 <feature
       id="org.eclipse.cdt.core.autotools"
       label="%featureName"
-      version="12.5.0.qualifier"
+      version="12.6.0.qualifier"
       provider-name="%providerName"
       plugin="org.eclipse.cdt.core.autotools.ui"
       license-feature="org.eclipse.license"

build/org.eclipse.cdt.gnu.build-feature/feature.xml

@@ -12,7 +12,7 @@
 <feature
       id="org.eclipse.cdt.gnu.build"
       label="%featureName"
-      version="12.5.0.qualifier"
+      version="12.6.0.qualifier"
       provider-name="%providerName"
       plugin="org.eclipse.cdt.build.gcc.ui"
       license-feature="org.eclipse.license"

build/org.eclipse.cdt.meson-feature/feature.xml

@@ -12,7 +12,7 @@
 <feature
       id="org.eclipse.cdt.meson"
       label="%featureName"
-      version="12.5.0.qualifier"
+      version="12.6.0.qualifier"
       provider-name="%providerName"
       plugin="org.eclipse.cdt.meson.ui"
       license-feature="org.eclipse.license"

build/org.eclipse.cdt.meson.docs/META-INF/MANIFEST.MF

@@ -2,7 +2,7 @@ Manifest-Version: 1.0
 Bundle-ManifestVersion: 2
 Bundle-Name: %bundleName
 Bundle-SymbolicName: org.eclipse.cdt.meson.docs;singleton:=true
-Bundle-Version: 12.5.0.qualifier
+Bundle-Version: 12.6.0.qualifier
 Bundle-Vendor: %provider
 Bundle-Localization: plugin
 Require-Bundle: org.eclipse.help;bundle-version="[3.10.500,4)",