msgpack-c: add new package

This is needed by tmate.

Signed-off-by: Tianling Shen <cnsztl@immortalwrt.org>

libs/msgpack-c/Makefile

@@ -0,0 +1,48 @@
+# SPDX-License-Identifier: GPL-3.0-only
+#
+# Copyright (C) 2021 ImmortalWrt.org
+
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=msgpack-c
+PKG_VERSION:=3.3.0
+PKG_RELEASE:=$(AUTORELEASE)
+
+PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
+PKG_SOURCE_URL:=https://codeload.github.com/msgpack/msgpack-c/tar.gz/cpp-$(PKG_VERSION)?
+PKG_HASH:=754c3ace499a63e45b77ef4bcab4ee602c2c414f58403bce826b76ffc2f77d0b
+PKG_BUILD_DIR:=$(BUILD_DIR)/$(PKG_NAME)-cpp-$(PKG_VERSION)
+
+PKG_LICENSE:=BSL-1.0
+PKG_LICENSE_FILES:=LICENSE
+PKG_MAINTAINER:=Tianling Shen <cnsztl@immortalwrt.org>
+
+PKG_BUILD_PARALLEL:=1
+CMAKE_INSTALL:=1
+
+include $(INCLUDE_DIR)/package.mk
+include $(INCLUDE_DIR)/cmake.mk
+
+CMAKE_OPTIONS+= -DMSGPACK_BUILD_EXAMPLES:BOOL=OFF
+
+define Package/msgpack-c
+  SECTION:=lib
+  CATEGORY:=Libraries
+  TITLE:=MessagePack implementation for C and C++
+  URL:=https://github.com/msgpack/msgpack-c
+endef
+
+define Package/msgpack-c/description
+  MessagePack is an efficient binary serialization format, which lets
+  you exchange data among multiple languages like JSON, except that
+  it's faster and smaller. Small integers are encoded into a single
+  byte and short strings require only one extra byte in addition to
+  the strings themselves.
+endef
+
+define Package/msgpack-c/install
+	$(INSTALL_DIR) $(1)/usr/lib
+	$(CP) $(PKG_INSTALL_DIR)/usr/lib/libmsgpackc.so* $(1)/usr/lib/
+endef
+
+$(eval $(call BuildPackage,msgpack-c))