Building Conscrypt

[frankmueller410]

• JDK 8
• Linux Ubuntu 22.04 x86_64

I have an issue, building this project on my local machine. When I clone this repository with the version 2.0.0, I got the following error:

-----------
* What went wrong:
Execution failed for task ':conscrypt-api-doclet:compileJava'.
> java.lang.ClassNotFoundException: com.google.errorprone.ErrorProneCompiler$Builder

Another error is appearing, when I use the master branch with the same specs:

* What went wrong:
A problem occurred configuring root project 'conscrypt'.
> Could not resolve all files for configuration ':classpath'.
   > Could not resolve com.android.tools.build:gradle:7.4.0.
     Required by:
         project :
      > No matching variant of com.android.tools.build:gradle:7.4.0 was found. The consumer was configured to find a runtime of a library compatible with Java 8, packaged as a jar, and its dependencies declared externally, as well as attribute 'org.gradle.plugin.api-version' with value '7.5' but:
          - Variant 'apiElements' capability com.android.tools.build:gradle:7.4.0 declares a library, packaged as a jar, and its dependencies declared externally:
              - Incompatible because this component declares an API of a component compatible with Java 11 and the consumer needed a runtime of a component compatible with Java 8
              - Other compatible attribute:
                  - Doesn't say anything about org.gradle.plugin.api-version (required '7.5')
          - Variant 'javadocElements' capability com.android.tools.build:gradle:7.4.0 declares a runtime of a component, and its dependencies declared externally:
              - Incompatible because this component declares documentation and the consumer needed a library
              - Other compatible attributes:
                  - Doesn't say anything about its target Java version (required compatibility with Java 8)
                  - Doesn't say anything about its elements (required them packaged as a jar)
                  - Doesn't say anything about org.gradle.plugin.api-version (required '7.5')
          - Variant 'runtimeElements' capability com.android.tools.build:gradle:7.4.0 declares a runtime of a library, packaged as a jar, and its dependencies declared externally:
              - Incompatible because this component declares a component compatible with Java 11 and the consumer needed a component compatible with Java 8
              - Other compatible attribute:
                  - Doesn't say anything about org.gradle.plugin.api-version (required '7.5')
          - Variant 'sourcesElements' capability com.android.tools.build:gradle:7.4.0 declares a runtime of a component, and its dependencies declared externally:
              - Incompatible because this component declares documentation and the consumer needed a library
              - Other compatible attributes:
                  - Doesn't say anything about its target Java version (required compatibility with Java 8)
                  - Doesn't say anything about its elements (required them packaged as a jar)
                  - Doesn't say anything about org.gradle.plugin.api-version (required '7.

Here are my versions, that I used for the rebuild this error messages:

• JDK 8
• SDK 34.0.0
• NDK 21.0.6113669
• CMake 3.6.4111459
• C++ 11.3.0

Maybe is use the wrong versions to build this project via "./gradlew assemble". In the BUILDING.md file I cannot see any version hints for these building tools.
Maybe you guys can help me with this issue. Thanks a lot!

[prbprbprb]

As per the pre-reqs, Gradle needs JDK 11 to build this project. And currently it also needs JDK 8 for the actual compilation (we'll fix that). So you'll need your JAVA_HOME to point at JDK11 but also to have JDK 8 available somewhere that Gradle can find it.

[frankmueller410]

That helped me, thank you very much!