Enable caching of task outputs for custom build tasks

buildSrc/src/main/groovy/package-list.groovy

@@ -6,6 +6,7 @@ import org.gradle.api.tasks.*
 //  create a Javadoc-style "package-list" file
 //
 
+@CacheableTask
 class CreatePackageList extends org.gradle.api.DefaultTask {
 
 	@Input Object sourceSet

buildSrc/src/main/groovy/verified-download.groovy

@@ -6,6 +6,7 @@ import org.gradle.api.tasks.*
 //  download and use checksum to verify that we got what we expected
 //
 
+@CacheableTask
 class VerifiedDownload extends org.gradle.api.DefaultTask {
 
 	// URL of resource to download

com.ibm.wala.cast.test/build.gradle

@@ -33,6 +33,7 @@ task generateJniHeaders(type: Exec, dependsOn: [testClasses, ':com.ibm.wala.cast
 	}
 	inputs.files files(qualifiedClasses.collect { "$buildDir/${it.replace('.', '/')}.class" })
 	outputs.files files(qualifiedClasses.collect { "$headerDir/${it.replace('.', '_')}.h" })
+	outputs.cacheIf { true }
 
 	// javah command to generate headers
 	def sourceSets = [sourceSets.test, project(':com.ibm.wala.cast').sourceSets.main]

com.ibm.wala.core.testdata/build.gradle

@@ -101,6 +101,7 @@ task generateHelloHashJar(type: JavaExec, dependsOn: unpackOcamlJava) {
 	inputs.file 'ocaml/hello_hash.ml'
 	outputs.file 'hello_hash.jar'
 	args inputs.files.singleFile, '-o', outputs.files.singleFile
+	outputs.cacheIf { true }
 
 	def ocamlJavaHome = new File(files(unpackOcamlJava).singleFile, downloadOcamlJava.basename)
 	classpath new File(ocamlJavaHome, 'lib/ocamljava.jar')

com.ibm.wala.dalvik.test/build.gradle

@@ -53,6 +53,7 @@ task unpackAndroidSdk(type: Sync, dependsOn: downloadAndroidSdk) {
 	into temporaryDir
 }
 
+@CacheableTask
 class InstallAndroidSdkComponent extends DefaultTask {
 	@Input def component
 	@Input def version