include $(TOPDIR)/rules.mk

# Name and release number of this package
PKG_NAME:=helloworld
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
PKG_BUILD_DIR := $(BUILD_DIR)/$(PKG_NAME)


include $(INCLUDE_DIR)/package.mk
#include $(INCLUDE_DIR)/autotools.mk
#include $(INCLUDE_DIR)/cmake.mk
#include $(INCLUDE_DIR)/debug.mk
#include $(INCLUDE_DIR)/depends.mk

#include $(INCLUDE_DIR)/toolchain-build.mk
#include $(INCLUDE_DIR)/kernel-defaults.mk
#include $(INCLUDE_DIR)/autotools.mk
#include $(INCLUDE_DIR)/depends.mk
#include $(INCLUDE_DIR)/kernel-defaults.mk
#include $(INCLUDE_DIR)/download.mk
#include $(INCLUDE_DIR)/feeds.mk
#include $(INCLUDE_DIR)/host-build.mk
#include $(INCLUDE_DIR)/host.mk
#include $(INCLUDE_DIR)/image.mk
#include $(INCLUDE_DIR)/kernel-build.mk
#include $(INCLUDE_DIR)/package-bin.mk
#include $(INCLUDE_DIR)/package-defaults.mk
##include $(INCLUDE_DIR)/package-dumpinfo.mk
#include $(INCLUDE_DIR)/package.mk
#include $(INCLUDE_DIR)/package-seccomp.mk
#include $(INCLUDE_DIR)/prereq.mk
#include $(INCLUDE_DIR)/quilt.mk
include $(INCLUDE_DIR)/scan.mk
#include $(INCLUDE_DIR)/scons.mk
#include $(INCLUDE_DIR)/verbose.mk
#include $(INCLUDE_DIR)/subdir.mk
#include $(INCLUDE_DIR)/toplevel.mk
#include $(INCLUDE_DIR)/subdir.mk


# Specify package information for this program. 
# The variables defined here should be self explanatory.
define Package/helloworld
    SECTION:=utils
    CATEGORY:=Utilities
    TITLE:=Helloworld -- prints a snarky message
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


# 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/helloworld/install
    $(INSTALL_DIR) $(1)/bin
    $(INSTALL_BIN) $(PKG_BUILD_DIR)/helloworld $(1)/bin/
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,helloworld))

/****************
* Helloworld.c
* The most simplistic C program ever written.
* An epileptic monkey on crack could write this code.
*****************/
#include <stdio.h>
#include <linux/gpio.h>

int main(void)
{
    printf("-----:D\n\n");
    return 0;
}

helloworld.c:7:24: fatal error: linux/gpio.h: No such file or directory
 #include <linux/gpio.h>
                        ^
compilation terminated.
make[4]: *** [helloworld.o] Error 1
make[4]: Leaving directory `/home/karolina/Documents/CrossCompile/OpenWrt-SDK-15.05-ar71xx-generic_gcc-4.8-linaro_uClibc-0.9.33.2.Linux-x86_64/build_dir/target-mips_34kc_uClibc-0.9.33.2/helloworld'
make[3]: *** [/home/karolina/Documents/CrossCompile/OpenWrt-SDK-15.05-ar71xx-generic_gcc-4.8-linaro_uClibc-0.9.33.2.Linux-x86_64/build_dir/target-mips_34kc_uClibc-0.9.33.2/helloworld/.built] Error 2
make[3]: Leaving directory `/home/karolina/Documents/CrossCompile/OpenWrt-SDK-15.05-ar71xx-generic_gcc-4.8-linaro_uClibc-0.9.33.2.Linux-x86_64/package/helloworld'
make[2]: *** [package/helloworld/compile] Error 2
make[2]: Leaving directory `/home/karolina/Documents/CrossCompile/OpenWrt-SDK-15.05-ar71xx-generic_gcc-4.8-linaro_uClibc-0.9.33.2.Linux-x86_64'
make[1]: *** [/home/karolina/Documents/CrossCompile/OpenWrt-SDK-15.05-ar71xx-generic_gcc-4.8-linaro_uClibc-0.9.33.2.Linux-x86_64/staging_dir/target-mips_34kc_uClibc-0.9.33.2/stamp/.package_compile] Error 2
make[1]: Leaving directory `/home/karolina/Documents/CrossCompile/OpenWrt-SDK-15.05-ar71xx-generic_gcc-4.8-linaro_uClibc-0.9.33.2.Linux-x86_64'
make: *** [world] Error 2