Tycho cannot resolve fragment dependency on other fragment

java, maven, osgi, osgi-fragment, tycho

Solution

So, a workaround for this issue was found in mailing lists: http://dev.eclipse.org/mhonarc/lists/tycho-user/msg03277.html

To solve the issue one should add the following sections to POM and build.properties:

<build>
  <plugins>
    <plugin>
      <groupId>org.eclipse.tycho</groupId>
      <artifactId>target-platform-configuration</artifactId>
      <version>${tycho-version}</version>
      <configuration>
        <dependency-resolution>
          <extraRequirements>
            <requirement>
              <type>eclipse-plugin</type>
              <id>org.eclipse.swt.win32.win32.x86_64</id>
              <versionRange>[3.0.0,4.0.0)</versionRange>
            </requirement>
          </extraRequirements>
        </dependency-resolution>
      </configuration>
    </plugin>
  </plugins>
</build>

build.properties:

extra.. = platform:/fragment/org.eclipse.swt.win32.win32.x86_64

I have also updated the GitHub repository

Problem

I want to create an extension for `org.eclipse.swt` as a fragment. I have created a bundle `swt.extension` with the following MANIFEST.MF: ``` Manifest-Version: 1.0 Bundle-ManifestVersion: 2 Bundle-Name: Extension Bundle-SymbolicName: swt.extension Bundle-Version: 1.0.0.qualifier Fragment-Host: org.eclipse.swt;bundle-version="3.102.0" Bundle-RequiredExecutionEnvironment: JavaSE-1.7 ``` Also, I have created an interface which extends an interface from SWT: ``` public interface IExtendedStyleTextContent extends org.eclipse.swt.custom.StyledTextContent { } ``` When I build my project with tycho (`mvn clean install`) the following error occurs: ``` 1. ERROR in C:\<path>\tycho-fragment-to-fragment-dependency\swt.extension\src\org\example\tycho_example\IExtendedStyleTextContent.java (at line 3) public interface IExtendedStyleTextContent extends org.eclipse.swt.custom.StyledTextContent { ^^^^^^^^^^^ org.eclipse cannot be resolved to a type ``` It seems that tycho resolves only org.eclipse.swt jar. This is a host bundle and it contains no classes. The actual implementation is in org.eclipse.swt.win32.win32.x86_64 fragment bundle. And it looks like this bundle is not on classpath when tycho-compiler-plugin compiles the project. Is this a bug of Tycho? Are their any workarounds? I have put all sources on GitHub: https://github.com/orionll/tycho-fragment-to-fragment-dependency I use maven 3.1.0

Original source