devel/gradle: Add missing dependency

Gradle uses native-platform which has compiled its native component
with g++, and requires that libstdc++.so.6 is available. See
gradle/native-platform#8.

PR:		208471
MFH:		r418287
Submitted by:	Tobias Kortkamp <t@tobik.me>
Approved by:	portmgr

devel/gradle/Makefile

@@ -3,6 +3,7 @@
 
 PORTNAME=	gradle
 PORTVERSION=	2.12
+PORTREVISION=	1
 CATEGORIES=	devel java
 MASTER_SITES=	https://services.gradle.org/distributions/
 DISTNAME=	${PORTNAME}-${PORTVERSION}-bin
@@ -12,6 +13,11 @@ COMMENT=	Project automation tool
 
 LICENSE=	APACHE20
 
+# Gradle depends on native-platform which has a native component that
+# requires libstdc++.so.6, because it was compiled with g++.
+# See https://github.com/adammurdoch/native-platform/issues/8
+LIB_DEPENDS=	libstdc++.so.6:misc/compat9x
+
 USES=		zip
 USE_JAVA=	yes
 NO_BUILD=	yes

devel/gradle/files/gradle.in

@@ -1,2 +1,2 @@
-#!/usr/bin/env bash
+#!/bin/sh
 exec "%%JAVA%%" -Dorg.gradle.native=false $JAVA_OPTS -classpath "%%DATADIR%%/lib/gradle-launcher-%%PORTVERSION%%.jar" org.gradle.launcher.GradleMain "$@"