Upgrade to Gradle 5.0 (#900)

* Move to Gradle 5.0
Remove buildSrc project
Move generated code into core
Give each project its own buildscript

* Use kotlin DSL where possible
* Add spotbugs
Fix new a problem identified by spotbugs

* Do not run build scans on Travis
* Remove evaulationDependsOn
* Cleaner codegen tests exclusion
* Run OpenCV installation in its own task and allow relative JNI paths
* Run code generation tests on Azure Linux

Author: SamCarlberg

.gitignore

@@ -84,8 +84,7 @@ hs_err_pid*
 node_modules
 bower_components
 
-#Generated files should be ignored as the are regenerated as a build step
-**/generated
+# Generated files should be ignored as the are regenerated as a build step
 */generated_tests
 /bin/
 ui/PipelineTest.java

.travis.yml

@@ -36,7 +36,7 @@ install:
 script:
   # Only run code generation tests on OSX -- linux requires sudo to install OpenCV dependencies, and that environment
   # will not be able to run MainWindowTest.testDragOperationFromPaletteToPipeline
-  - ./gradlew check jacocoTestReport jacocoRootReport --stacktrace -Pheadless=true -PlogTests --scan;
+  - ./gradlew check jacocoTestReport jacocoRootReport --stacktrace -Pheadless=true -PlogTests;
 
 after_success:
   - if [[ "$TRAVIS_OS_NAME" != "osx" ]]; then codecov         ; fi

azure-pipelines.yml

@@ -29,7 +29,7 @@ jobs:
           gradleOptions: '-Xmx3072m -Dorg.gradle.java.home=/usr/lib/jvm/java-8-oracle'
           jdkUserInputPath: '/usr/lib/jvm/java-8-oracle'
           publishJUnitResults: false
-          tasks: 'check jacocoTestReport jacocoRootReport jfxNative -Pheadless=true -PlogTests --stacktrace'
+          tasks: 'check jacocoTestReport jacocoRootReport jfxNative -Pgeneration -PjniLocation=build/OpenCVJNI -Pheadless=true -PlogTests --stacktrace'
 
       # Publish JaCoCo code coverage results from the build
       - task: PublishCodeCoverageResults@1