pcapplusplus: Add new package

PcapPlusPlus is a multiplatform C++ library for capturing, parsing and
crafting of network packets. It is designed to be efficient, powerful
and easy to use. It provides C++ wrappers for the most popular packet
processing engines such as libpcap, WinPcap, DPDK and PF_RING.

Signed-off-by: Michal Hrusecky <michal.hrusecky@turris.com>

libs/pcapplusplus/Makefile

@@ -0,0 +1,57 @@
+#
+# Copyright (C) 2021 Michal Hrusecky <michal.hrusecky@turris.com>
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=pcapplusplus
+PKG_VERSION:=21.11
+PKG_RELEASE:=1
+
+PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION)-source-linux.tar.gz
+PKG_HASH:=a936aa5b11dcb6d2ad764749d339fc683021bbf8badc1e493e17e61e50a1cbb1
+PKG_SOURCE_URL:=https://github.com/seladb/PcapPlusPlus/releases/download/v$(PKG_VERSION)/
+
+PKG_BUILD_DIR:=$(BUILD_DIR)/pcapplusplus-$(PKG_VERSION)-source-linux
+
+PKG_LICENSE:=Unlicense
+PKG_LICENSE_FILES:=LICENSE
+
+include $(INCLUDE_DIR)/package.mk
+
+define Package/pcapplusplus
+  SECTION:=net
+  CATEGORY:=Network
+  URL:=https://pcapplusplus.github.io/
+  TITLE:=Library for getting information about the passing traffic
+  DEPENDS:=+libpcap +libstdcpp
+endef
+
+define Build/Compile
+	cd $(PKG_BUILD_DIR)/PcapPlusPlus; ./configure-linux.sh --install-dir /usr
+	make -C $(PKG_BUILD_DIR)/PcapPlusPlus CXXFLAGS="$(TARGET_CXXFLAGS) -fPIC" CFLAGS="$(TARGET_CFLAGS) -fPIC" CXX=$(TARGET_CXX) CC=$(TARGET_CC) AR=$(TARGET_AR) libs
+endef
+
+define Build/InstallDev
+	$(INSTALL_DIR) $(1)/usr/include
+	$(CP) $(PKG_BUILD_DIR)/PcapPlusPlus/Dist/header/*.h $(1)/usr/include
+	$(INSTALL_DIR) $(1)/usr/lib
+	# Convert static libraries to shared ones
+	$(TARGET_CXX) $(TARGET_CXXFLAGS) -shared -o $(1)/usr/lib/libCommon++.so -Wl,--whole-archive $(PKG_BUILD_DIR)/PcapPlusPlus/Dist/libCommon++.a -Wl,--no-whole-archive
+	$(TARGET_CXX) $(TARGET_CXXFLAGS) -shared -o $(1)/usr/lib/libPacket++.so -Wl,--whole-archive $(PKG_BUILD_DIR)/PcapPlusPlus/Dist/libPacket++.a -Wl,--no-whole-archive
+	$(TARGET_CXX) $(TARGET_CXXFLAGS) -shared -o $(1)/usr/lib/libPcap++.so -Wl,--whole-archive $(PKG_BUILD_DIR)/PcapPlusPlus/Dist/libPcap++.a -Wl,--no-whole-archive
+	$(CP) $(PKG_BUILD_DIR)/PcapPlusPlus/Dist/lib*.a $(1)/usr/lib
+endef
+
+define Package/pcapplusplus/install
+	$(INSTALL_DIR) $(1)/usr/lib
+	# Convert static libraries to shared ones
+	$(TARGET_CXX) $(TARGET_CXXFLAGS) -shared -o $(1)/usr/lib/libCommon++.so -Wl,--whole-archive $(PKG_BUILD_DIR)/PcapPlusPlus/Dist/libCommon++.a -Wl,--no-whole-archive
+	$(TARGET_CXX) $(TARGET_CXXFLAGS) -shared -o $(1)/usr/lib/libPacket++.so -Wl,--whole-archive $(PKG_BUILD_DIR)/PcapPlusPlus/Dist/libPacket++.a -Wl,--no-whole-archive
+	$(TARGET_CXX) $(TARGET_CXXFLAGS) -shared -o $(1)/usr/lib/libPcap++.so -Wl,--whole-archive $(PKG_BUILD_DIR)/PcapPlusPlus/Dist/libPcap++.a -Wl,--no-whole-archive
+endef
+
+$(eval $(call BuildPackage,pcapplusplus))