error 1:	make:*** [Bluetooth Server 2]Error 1         		Resource: Bluetooth Server 2		
error 2: 	recipe for target 'Bluetooth Server 2' failed		Resource: makefile          		Path: /Bluetooth Server 2/Debug		Location: line 45

where "Bluetooth Server 2" is the name of the project

#include "/usr/include/stdint.h"
#include "/usr/include/bluez-5.31/lib/bluetooth.h"
#include "/usr/include/bluez-5.31/lib/hci.h"
#include "/usr/include/bluez-5.31/lib/hci_lib.h"
#include "/usr/include/bluez-5.31/lib/rfcomm.h"

int main(int argc, char **argv)
{
	struct sockaddr_rc loc_addr = { 0 }, rem_addr = { 0 };
	char buf[1024] = { 0 };
	int s, client, bytes_read;
	unsigned int opt = sizeof(rem_addr);

	//allocate socket
	s = socket(AF_BLUETOOTH, SOCK_STREAM, BTPROTO_RFCOMM);

	//bind socket to port 1 of the first available adapter

	bdaddr_t tmp = {0,0,0,0,0,0};

	loc_addr.rc_family = AF_BLUETOOTH;
	loc_addr.rc_bdaddr = tmp;
	loc_addr.rc_channel = 1;
	bind(s, (struct sockaddr* )&loc_addr, sizeof(loc_addr));

	//put socket into listening mode
	listen(s, 1);

	//accept one connection
	client = accept(s, (struct sockaddr *)&rem_addr, &opt);

	ba2str( &rem_addr.rc_bdaddr, buf );
	fprintf( stderr, "accepter connection from %s\n", buf);
	memset( buf, 0, sizeof(buf));

	//read data from the client
	bytes_read = recv(client, buf, sizeof(buf), 0);
	if( bytes_read > 0 )
	{
		printf("received [%s]\n", buf);
	}

	//close connection
	//close(client);
	//close(s);
	return 0;
}

################################################################################
# Automatically-generated file. Do not edit!
################################################################################

-include ../makefile.init

RM := rm -rf

# All of the sources participating in the build are defined here
-include sources.mk
-include src/subdir.mk
-include subdir.mk
-include objects.mk

ifneq ($(MAKECMDGOALS),clean)
ifneq ($(strip $(C++_DEPS)),)
-include $(C++_DEPS)
endif
ifneq ($(strip $(C_DEPS)),)
-include $(C_DEPS)
endif
ifneq ($(strip $(CC_DEPS)),)
-include $(CC_DEPS)
endif
ifneq ($(strip $(CPP_DEPS)),)
-include $(CPP_DEPS)
endif
ifneq ($(strip $(CXX_DEPS)),)
-include $(CXX_DEPS)
endif
ifneq ($(strip $(C_UPPER_DEPS)),)
-include $(C_UPPER_DEPS)
endif
endif

-include ../makefile.defs

# Add inputs and outputs from these tool invocations to the build variables 

# All Target
all: Bluetooth\ Server\ 2

# Tool invocations
Bluetooth\ Server\ 2: $(OBJS) $(USER_OBJS)
	@echo 'Building target: $@'
	@echo 'Invoking: GCC C++ Linker'
	g++ -L/usr/include/ -bluez-5.31 -o "Bluetooth Server 2" $(OBJS) $(USER_OBJS) $(LIBS)
	@echo 'Finished building target: $@'
	@echo ' '

# Other Targets
clean:
	-$(RM) $(OBJS)$(C++_DEPS)$(C_DEPS)$(CC_DEPS)$(CPP_DEPS)$(EXECUTABLES)$(CXX_DEPS)$(C_UPPER_DEPS) "Bluetooth Server 2"
	-@echo ' '

.PHONY: all clean dependents
.SECONDARY:

-include ../makefile.targets

- C/C++ Build >> Settings >> Tool Settings >> GCC C++ Linker >> Miscellaneous: In the linker flags box i wrote: "-bluez-5.31"
- C/C++ Build >> Settings >> Tool Settings >> GCC C++ Linker >> Libraries: Added " "bluez-5.31" " in -l
- C/C++ Build >> Settings >> Tool Settings >> GCC C++ Linker >> Libraries: Added " /usr/include " in -L