Store generate application in bin/ folder relative to current location.

coupler/opc-ua-server/Makefile

@@ -2,16 +2,17 @@ CC=gcc
 CFLAGS= -I $(OPEN62541_SOURCE_HOME) 
 LDFLAGS= -L $(OPEN62541_HOME)/lib
 EXTRA_FLAGS=$(C_COMPILER_EXTRA_FLAGS)
-OUT_DIR= $(BINARY_OUT_DIR)
+OUT_DIR= bin
 
 server: server.c
 	$(CC) -o $@ $^ $(CFLAGS) $(LDFLAGS) -std=c99 $(EXTRA_FLAGS)
 
 install:
-	@cp server $(OUT_DIR)
+	mkdir -p $(OUT_DIR)
+	@cp server $(OUT_DIR)/
 	@rm server
 	
 clean:
-	@rm $(OUT_DIR)server 2>/dev/null || true
+	@rm $(OUT_DIR)/server 2>/dev/null || true
 
 .PHONY: clean