The Makefile for this part of the project looks as follows:

export TOP := $(CURDIR)

 GPP = g++
 GCC = gcc
 MAKEDIR = mkdir -p
 RM = rm

 OUTPUT = bmac_server
 INCLUDE = -I .
 FLAGS := $(INCLUDE) -g3 -std=c++17 -U__STRICT_ANSI__
 LIB := -lnymphrpc -lPocoNet -lPocoUtil -lPocoFoundation -lPocoJSON
 CPPFLAGS := $(FLAGS)
 CFLAGS := -g3 
 CPP_SOURCES := $(wildcard *.cpp) $(wildcard devices/*.cpp)
 CPP_OBJECTS := $(addprefix obj/,$(notdir) $(CPP_SOURCES:.cpp=.o))

 all: makedir $(C_OBJECTS) $(CPP_OBJECTS) bin/$(OUTPUT)

 obj/%.o: %.cpp
    $(GPP) -c -o $@ $< $(CPPFLAGS)

 bin/$(OUTPUT):
    -rm -f $@
    $(GPP) -o $@ $(C_OBJECTS) $(CPP_OBJECTS) $(LIB)

 makedir:
    $(MAKEDIR) bin
    $(MAKEDIR) obj/devices

 clean:
    $(RM) $(CPP_OBJECTS)

This is a rather simple Makefile as we have no special demands. We gather the source files, determine the names of the resulting object files, and compile all of them before generating a binary out of these object files.