##############################################
# OpenWrt Makefile for librdkafka program
#
# Copyright (C) [2017] [Fei Ding]
# 
# Author : Fei Ding <fding87 at gmail.com>
# 
##############################################

include $(TOPDIR)/rules.mk

# Name and release number of this package
PKG_NAME:=kafkaClient
PKG_VERSION:=1.0.0
PKG_RELEASE:=1

# This specifies the directory where we're going to build the program.  
# The root build directory, $(BUILD_DIR), is by default the build_mipsel 
# directory in your OpenWrt SDK directory

include $(INCLUDE_DIR)/package.mk



# Specify package information for this program. 
# The variables defined here should be self explanatory.
# If you are running Kamikaze, delete the DESCRIPTION 
# variable below and uncomment the Kamikaze define
# directive for the description below
define Package/kafkaClient
	SECTION:=utils
	CATEGORY:=Utilities
	DEPENDS:=+librdkafka +libatomic +libstdcpp +libuci +libdyutils +libubox
	TITLE:=kafkaClient -- kafka client to send message
endef


define Package/kafkaClient/description
	Apache Kafka C client to produce message, containing both Producer and Consumer support.
endef


# Specify what needs to be done to prepare for building the package.
# In our case, we need to copy the source files to the build directory.
# This is NOT the default.  The default uses the PKG_SOURCE_URL and the
# PKG_SOURCE which is not defined here to download the source from the web.
# In order to just build a simple program that we have just written, it is
# much easier to do it this way.
define Build/Prepare
	mkdir -p $(PKG_BUILD_DIR)
	$(CP) ./src/* $(PKG_BUILD_DIR)/
endef

# We do not need to define Build/Configure or Build/Compile directives
# The defaults are appropriate for compiling a simple program such as this one
define Build/Configure
endef

TARGET_CFLAGS+=$(FPIC)

# Specify where and how to install the program. Since we only have one file, 
# the helloworld executable, install it by copying it to the /bin directory on
# the router. The $(1) variable represents the root directory on the router running 
# OpenWrt. The $(INSTALL_DIR) variable contains a command to prepare the install 
# directory if it does not already exist.  Likewise $(INSTALL_BIN) contains the 
# command to copy the binary file from its current location (in our case the build
# directory) to the install directory.

define Package/kafkaClient/install
	$(INSTALL_DIR) $(1)/app/
	$(INSTALL_DIR) $(1)/app/config
	$(INSTALL_DIR) $(1)/etc/
	$(INSTALL_DIR) $(1)/etc/init.d/
	$(INSTALL_DIR) $(1)/bin
	$(INSTALL_BIN) $(PKG_BUILD_DIR)/kafkaClient $(1)/app/
	$(INSTALL_BIN) ./files/kafkaClient.initd $(1)/etc/init.d/kafka
	$(INSTALL_CONF) ./files/kafka.json $(1)/app/config/
endef

# This line executes the necessary commands to compile our program.
# The above define directives specify all the information needed, but this
# line calls BuildPackage which in turn actually uses this information to
# build a package.

$(eval $(call BuildPackage,kafkaClient))