rtorrent: Enable IPv6 support

Other Makefile cleanups as well.

Signed-off-by: Rosen Penev <rosenp@gmail.com>

net/rtorrent/Makefile

@@ -9,20 +9,20 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=rtorrent
 PKG_VERSION:=0.9.7
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=https://github.com/rakshasa/rtorrent/releases/download/v$(PKG_VERSION)
 PKG_HASH:=5d9842fe48c9582fbea2c7bf9f51412c1ccbba07d059b257039ad53b863fe8bb
+PKG_BUILD_DIR:=$(BUILD_DIR)/$(PKG_NAME)-$(BUILD_VARIANT)/$(PKG_NAME)-$(PKG_VERSION)
 
-PKG_LICENSE:=GPL-2.0
+PKG_MAINTAINER:=Rosen Penev <rosenp@gmail.com>
+PKG_LICENSE:=GPL-2.0-or-later
 PKG_LICENSE_FILES:=COPYING
 
 PKG_FIXUP:=autoreconf
-PKG_BUILD_PARALLEL:=1
 PKG_INSTALL:=1
-
-PKG_BUILD_DIR:=$(BUILD_DIR)/$(PKG_NAME)-$(BUILD_VARIANT)/$(PKG_NAME)-$(PKG_VERSION)
+PKG_BUILD_PARALLEL:=1
 
 include $(INCLUDE_DIR)/package.mk
 
@@ -31,9 +31,8 @@ define Package/rtorrent/Default
   SECTION:=net
   CATEGORY:=Network
   TITLE:=BitTorrent client for ncurses
-  URL:=http://libtorrent.rakshasa.no/
-  DEPENDS:=+libcurl +libtorrent +libncursesw +libsigcxx +libpthread
-  MAINTAINER:=Rosen Penev <rosenp@gmail.com>
+  URL:=https://github.com/rakshasa/rtorrent
+  DEPENDS:=+libcurl +libtorrent +libncurses +libsigcxx +libpthread
 endef
 
 define Package/rtorrent/Default/description
@@ -65,20 +64,18 @@ $(call Package/rtorrent/Default/description)
  This package is built with xmlrpc support
 endef
 
-TARGET_LDFLAGS += -lz -lpthread -Wl,-rpath-link=$(STAGING_DIR)/usr/lib
-
-CONFIGURE_ARGS+= \
+CONFIGURE_ARGS += \
 	--enable-shared \
 	--disable-static \
 	--disable-debug \
-	--disable-ipv6
+	--with-libcurl="$(STAGING_DIR)/usr" \
+	--with-ncurses \
+	$(if $(CONFIG_IPV6),--enable,--disable)-ipv6
 
 ifeq ($(BUILD_VARIANT),rpc)
-	CONFIGURE_ARGS += \
-		--with-xmlrpc-c
+CONFIGURE_ARGS += --with-xmlrpc-c
 endif
 
-
 define Package/rtorrent/install
 	$(INSTALL_DIR) $(1)/usr/bin
 	$(INSTALL_BIN) $(PKG_INSTALL_DIR)/usr/bin/rtorrent $(1)/usr/bin/