java-gson: Add configure and build stage

Still not working.

java-gson/Makefile

@@ -15,4 +15,35 @@ LICENSE=	apache-2.0
 WRKSRC=		${WRKDIR}/gson-gson-parent-${PKGVERSION_NOREV}
 USE_LANGUAGES=	# none
 
+USE_TOOLS+=     bash
+
+do-configure:
+	#XXX this assumes trusted CA certificates are in /etc/openssl/certs
+	cd ${WRKSRC} && \
+		for cert in /etc/openssl/certs/*.0; do \
+			/usr/pkg/java/openjdk11/bin/keytool -importcert \
+				-keystore ${WRKDIR}/keystore \
+				-noprompt -trustcacerts \
+				-storepass password -file "$$cert" \
+				-alias $$(basename "$$cert"); done
+
+USE_JAVA=	yes
+USE_JAVA2=	yes
+MAKE_ENV+=	JAVA_HOME=${PKG_JAVA_HOME}
+
+SUBST_CLASSES+=		gradle
+SUBST_STAGE.gradle=	pre-configure
+SUBST_MESSAGE.gradle=	Upgrading to newer gradle, supporting openjdk11
+SUBST_FILES.gradle=	gradle/wrapper/gradle-wrapper.properties
+SUBST_SED.gradle=	-e 's,gradle-4.4-all.zip,gradle-5.4.1-all.zip,'
+
+do-build:
+	${RUN} echo
+	cd ${WRKSRC} && ${SETENV} ${MAKE_ENV} ${BASH} \
+		./gradlew \
+		-Djavax.net.ssl.trustStore=${WRKDIR}/keystore \
+		-Djavax.net.ssl.trustStorePassword=password \
+		build
+
+.include "../../mk/java-vm.mk"
 .include "../../mk/bsd.pkg.mk"