[add] arm-linux codebuild tools

sys/arm-linux/tools/codebuild/.gitignore

@@ -0,0 +1,6 @@
+codebuild
+u8g2*
+u8x8*
+*.o
+*.md
+*.h

sys/arm-linux/tools/codebuild/Makefile

@@ -0,0 +1,20 @@
+# 
+# U8g2 codebuilder
+# 
+
+CFLAGS = -g -Wall 
+#CFLAGS = -O4 -Wall
+
+SRC = codebuild.c
+
+OBJ = $(SRC:.c=.o)
+
+codebuild: $(SRC)
+	$(CC) -Wall -g $(LDFLAGS) $(SRC) -o codebuild
+
+clean:	
+	-rm ./codebuild
+
+build: codebuild
+	./codebuild
+