Add jacocoRootReport task

.travis.yml

@@ -21,6 +21,5 @@ script: gradle check --stacktrace
 after_success:
   - JAVAC_VERSION=$((javac -version) 2>&1)
   # Only run jacocoRootReport in the Java 8 build
-  #  - if [[ "$JAVAC_VERSION" = javac\ 1.8.* ]]; then gradle jacocoRootReport coveralls; fi
-  - if [[ "$JAVAC_VERSION" = javac\ 1.8.* ]]; then gradle jacocoTestReport coveralls; fi
+  - if [[ "$JAVAC_VERSION" = javac\ 1.8.* ]]; then gradle jacocoRootReport coveralls; fi
 

build.gradle

@@ -221,8 +221,12 @@ coveralls {
 	sourceDirs = files(subprojects.sourceSets.main.allSource.srcDirs).files.absolutePath
 }
 
-/*
+
 task jacocoRootReport(type: JacocoReport) {
+    dependsOn = subprojects.jacocoTestReport
+    sourceDirectories = files(subprojects.sourceSets.main.allSource.srcDirs)
+    classDirectories = files(subprojects.sourceSets.main.output)
+    executionData = files(subprojects.jacocoTestReport.executionData)
     reports {
         xml.enabled true
         xml.destination file("${buildDir}/reports/jacoco/test/jacocoTestReport.xml")
@@ -233,7 +237,7 @@ task jacocoRootReport(type: JacocoReport) {
     // in there).
     setOnlyIf { true }
 }
-*/
+
 
 task javadocAll(type: Javadoc) {
     source subprojects.collect {project ->