rtorrent: Switch to using static libtorrent

rtorrent is the only user of libtorrent. Statically link to save space.

Added usleep patch.

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

net/rtorrent/Makefile

@@ -9,12 +9,11 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=rtorrent
 PKG_VERSION:=0.9.8
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=https://codeload.github.com/rakshasa/rtorrent/tar.gz/v$(PKG_VERSION)?
 PKG_HASH:=bc889ce1dde475ec56aa72ae996912ff58723226a4f4256fef4f1f8636d991d4
-PKG_BUILD_DIR:=$(BUILD_DIR)/$(PKG_NAME)-$(BUILD_VARIANT)/$(PKG_NAME)-$(PKG_VERSION)
 
 PKG_MAINTAINER:=Rosen Penev <rosenp@gmail.com>
 PKG_LICENSE:=GPL-2.0-or-later
@@ -23,7 +22,7 @@ PKG_LICENSE_FILES:=COPYING
 PKG_FIXUP:=autoreconf
 PKG_INSTALL:=1
 PKG_BUILD_PARALLEL:=1
-PKG_REMOVE_FILES:=autogen.sh
+PKG_BUILD_DEPENDS:=libtorrent
 
 include $(INCLUDE_DIR)/package.mk
 
@@ -33,7 +32,7 @@ define Package/rtorrent/Default
   CATEGORY:=Network
   TITLE:=BitTorrent client for ncurses
   URL:=https://github.com/rakshasa/rtorrent
-  DEPENDS:=+libcurl +libtorrent +libncurses +libpthread
+  DEPENDS:=+libcurl +libncurses +libpthread +libopenssl +libstdcpp +zlib
 endef
 
 define Package/rtorrent/Default/description
@@ -66,8 +65,8 @@ $(call Package/rtorrent/Default/description)
 endef
 
 CONFIGURE_ARGS += \
-	--enable-shared \
-	--disable-static \
+	--enable-static \
+	--disable-shared \
 	--disable-debug \
 	--with-libcurl="$(STAGING_DIR)/usr" \
 	--with-ncurses \
@@ -78,6 +77,7 @@ CONFIGURE_ARGS += --with-xmlrpc-c
 endif
 
 TARGET_CXXFLAGS += -faligned-new
+TARGET_LDFLAGS += -lcrypto -lz
 
 define Package/rtorrent/install
 	$(INSTALL_DIR) $(1)/usr/bin

net/rtorrent/patches/130-usleep.patch

@@ -0,0 +1,33 @@
+From b3d75a642177f21f00d18f0e46bca4a9f363d08e Mon Sep 17 00:00:00 2001
+From: Rosen Penev <rosenp@gmail.com>
+Date: Fri, 23 Aug 2019 13:35:28 -0700
+Subject: [PATCH] Replace usleep with C++11 sleep_for
+
+usleep was deprecated with POSIX 2008 and optionally unavailable with
+uClibc-ng.
+---
+ src/thread_base.cc | 4 +++-
+ 1 file changed, 3 insertions(+), 1 deletion(-)
+
+diff --git a/src/thread_base.cc b/src/thread_base.cc
+index 081791d4..275015ab 100644
+--- a/src/thread_base.cc
++++ b/src/thread_base.cc
+@@ -42,6 +42,8 @@
+ #include <cstdlib>
+ #include <cstring>
+ #include <iostream>
++#include <chrono>
++#include <thread>
+ #include <signal.h>
+ #include <unistd.h>
+ #include <rak/error_number.h>
+@@ -66,7 +68,7 @@ class lt_cacheline_aligned thread_queue_hack {
+ 
+   thread_queue_hack() { std::memset(this, 0, sizeof(thread_queue_hack)); }
+ 
+-  void     lock()   { while (!__sync_bool_compare_and_swap(&m_lock, 0, 1)) usleep(0); }
++  void     lock()   { while (!__sync_bool_compare_and_swap(&m_lock, 0, 1)) std::this_thread::sleep_for(std::chrono::microseconds(0)); }
+   void     unlock() { __sync_bool_compare_and_swap(&m_lock, 1, 0); }
+ 
+   iterator begin() { return m_queue; }