ADD: builds in buildroot

Makefile

-ARCH ?=
-CROSS_COMPILE ?=
+ARCH ?= arm
+CROSS_COMPILE ?= arm-linux-
 
 SRC_DIR := src
 BUILD_DIR := build
 
 SERVER := imageviewer
 SERVER_PATH := ${BUILD_DIR}/${SERVER}
-DISPLAY_LIB := lib${DISPLAY_CMD}.a
+DISPLAY_LIB := libdisplay.a
 DISPLAY_LIB_PATH := ${BUILD_DIR}/${DISPLAY_LIB}
 
 CC := ${CROSS_COMPILE}gcc
@@ -42,6 +42,7 @@ ${BUILD_DIR}:
 
 .NOTPARALLEL: cleanbuild rebuild
 
+
 clean:
 	rm -rf ${SERVER} ${BUILD_DIR} *.out *.a