Enhance native build documentation and adjust CONTRIBUTING section

CONTRIBUTING.md

@@ -15,19 +15,17 @@ and other infrastructure for running OSGi-based systems.
 Information regarding source code management, builds, coding standards, and
 more.
 
-* https://projects.eclipse.org/projects/eclipse.equinox/developer
-
 The project maintains the following source code repositories
 
-* https://github.com/eclipse-equinox/equinox.binaries
 * https://github.com/eclipse-equinox/equinox
+* https://github.com/eclipse-equinox/equinox.binaries
 * https://github.com/eclipse-equinox/p2
 
 This project uses GitHub to track ongoing development and issues.
 
-* Search for issues: https://github.com/eclipse-equinox/equinox.binaries/issues
+* Search for issues: https://github.com/eclipse-equinox/equinox/issues
 * Search for historical issues: https://eclipse.org/bugs/buglist.cgi?product=Equinox
-* Create a new report: https://github.com/eclipse-equinox/equinox.binaries/issues/new
+* Create a new report: https://github.com/eclipse-equinox/equinox/issues/new
 
 Be sure to search for existing bugs before you create another one. Remember that
 contributions are always welcome!
@@ -39,6 +37,11 @@ and run:
 
 `mvn clean verify -Pbuild-individual-bundles -Pbree-libs -Ptck`
 
+### Building the native executable and launcher library binaries
+
+The source code to build the platform specific executables and launcher libraries for Equinox is located in [org.eclipse.equinox.executable.feature](features/org.eclipse.equinox.executable.feature).
+For details see its [README.md](features/org.eclipse.equinox.executable.feature/README.md).
+
 ## Eclipse Contributor Agreement
 
 Before your contribution can be accepted by the project team contributors must

features/org.eclipse.equinox.executable.feature/README.md

@@ -1,9 +1,26 @@
 This feature contains the eclipse executables and includes the equinox launcher bundle and its fragments.
-It also host the native C source files to build the executable and launcher binaries for all supported platforms.
+It also hosts the native C source files to build the executable and launcher library binaries for all supported platforms.
 
-## Building the native executable and launcher binaries
+# Building the native executable and launcher binaries
 
-To just build the native binaries navigate to the `library/<window-system>` sub-directory of interest and run 
+## Required software
+
+The software listed below is required to build the Equinox native binaries on the current platform targeting the same OS and processor arch.
+
+- Windows:
+    - Microsoft Visual C Compiler 2019 or later (earlier version can also work), the 'Visual Studio Community Edition' is sufficient.
+- Linux:
+    - GTK development files. The Package `libgtk-3-dev` is sufficient.
+- MacOS:
+    - TBD
+
+## Running the build
+
+The simplest way to build and install the native binaries for the running platform is to launch the Maven launch-configuration
+named `Build-Equinox-native-binaries-for-running-platform` from this project (requires Eclipse M2E being installed).
+It assumes the [`equinox.binaries`](https://github.com/eclipse-equinox/equinox.binaries.git) repository is checked out located next to this repository and is named `equinox.binaries`.
+
+To just build the native binaries for a specific platform navigate to the `library/<window-system>` sub-directory of interest and run 
 - `./build.sh` for Linux or MacOS
 - `.\build.bat` for Windows.