Added User-space RCU library version 0.7.12.

Signed-off-by: Daniel Salzman <daniel.salzman@nic.cz>

libs/liburcu/Makefile

@@ -0,0 +1,51 @@
+#
+# Copyright (C) 2014 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz>
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=liburcu
+PKG_VERSION:=0.7.12
+PKG_RELEASE:=1
+
+PKG_SOURCE:=userspace-rcu-$(PKG_VERSION).tar.bz2
+PKG_SOURCE_SUBDIR:=userspace-rcu-$(PKG_VERSION)
+PKG_SOURCE_URL:=https://lttng.org/files/urcu/
+PKG_MD5SUM:=5957c9f5d2d4a483dcada7f313b539ca
+
+PKG_BUILD_DIR:=$(BUILD_DIR)/userspace-rcu-$(PKG_VERSION)
+PKG_BUILD_PARALLEL:=1
+PKG_INSTALL:=1
+PKG_USE_MIPS16:=0
+
+include $(INCLUDE_DIR)/package.mk
+
+define Package/liburcu
+	SECTION:=libs
+	CATEGORY:=Libraries
+	TITLE:=User-space Read-Copy-Update library
+	URL:=https://lttng.org/
+	MAINTAINER:=daniel.salzman@nic.cz
+	DEPENDS:=+libpthread
+endef
+
+define Package/liburcu/description
+	Userspace Read-Copy-Update library.
+endef
+
+define Build/InstallDev
+	$(INSTALL_DIR)						$(1)/usr/include
+	$(CP) $(PKG_INSTALL_DIR)/usr/include/urcu*		$(1)/usr/include/
+	$(INSTALL_DIR)						$(1)/usr/lib
+	$(CP) $(PKG_INSTALL_DIR)/usr/lib/liburcu*.{a,so*}	$(1)/usr/lib/
+endef
+
+define Package/liburcu/install
+	$(INSTALL_DIR)					$(1)/usr/lib
+	$(CP) $(PKG_INSTALL_DIR)/usr/lib/liburcu*.so.*	$(1)/usr/lib/
+endef
+
+$(eval $(call BuildPackage,liburcu))