Cant Find Build Package

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1

Hi, I compiled my lede sdk for the ar71xx target and is trying to compile a simple helloworld program. I have the following directory structure:

sdk
      \package
           \helloworld
                 \src
                      Makefile
                      helloworld.c                               
                  Makefile

**package/helloworld/src/Makefile:**

CC = gcc
FLAG =  -Wall

helloworld:
    $(CC) $(FLAG) helloworld.c -o helloworld

package/helloworld/Makefile:

include $(TOPDIR)/rules.mk

#Name and release number
PKG_NAME:=helloworld
PKG_RELEASE:=1
#configure build directory
PKG_BUILD_DIR:=$(BUILD_DIR)/$(PKG_NAME)	

include $(INCLUDE_DIR)/package.mk

#useless metainfo
define Package/helloworld
	SECTION:=utils
	CATEGORY:=Utilities
	TITLE:=Helloworld Program
endef

#IMPORTANT: define steps to prepare for the build
#default is to download source from the web
define Build/Prepare
	mkdir -p $(PKG_BUILD_DIR)
	$(CP) ./src/* $(PKG_BUILD_DIR)/
endef

#IMPORTANT: define steps to install on target machine
#$(1) refers to the root directory of target
#$(INSTALL_DIR) contains command to prepare the installation directory should
#it not exist
define Package/helloworld/install
	$(INSTALL_DIR) $(1)/usr/bin
	#copy helloworld binary 
	$(INSTALL_DIR) $(PKG_BUILD_DIR)/helloworld $(1)/usr/sbin
endef

#this starts the build process
$(eval$(call BuildPackage,helloworld))

Then I ran make package/helloworld/compile in the root SDK directory, which gave the following output to console:

tmp/.config-package.in:36:warning: ignoring type redefinition of 'PACKAGE_libc' from 'boolean' to 'tristate'
tmp/.config-package.in:64:warning: ignoring type redefinition of 'PACKAGE_libgcc' from 'boolean' to 'tristate'
tmp/.config-package.in:149:warning: ignoring type redefinition of 'PACKAGE_libpthread' from 'boolean' to 'tristate'
#
# configuration written to .config
#
 make[1] package/helloworld/compile
 make[2] -C package/toolchain compile
 make[2] -C package/helloworld compile

I then did find -name "*helloworld*" but was not able to find the built .ipkg file anywhere. Did I configure something wrong in the build options or maybe it has something to do with the SDK not being compiled properly?