Makefile-build

# Main Makefile
CC := gcc
CFLAGS := -Wall -MMD

# Default target
TARGET := debug

# Check for debug/release build
ifeq ($(TARGET), debug)
    CFLAGS += -g -DDEBUG
else
	CFLAGS += -O3
endif

# Library name for dll
LIB_NAME :=

# OS-dependent variables
ifeq ($(OS),Windows_NT)
	BIN := main-$(TARGET).exe
	DLE := dll
	ODIR := obj/windows

	CFLAGS+= -mno-ms-bitfields
#	LOADLIBES := -municode
else
	BIN := aviao
	DLE := so
	ODIR := obj/linux
endif

# Directories
IDIR := include
SDIR := src

# Include Paths
INCLUDE_PATHS := -I$(IDIR)

# Libraries
LIBS :=
#CFLAGS += `pkg-config --cflags $(LIBS)`
LOADLIBES = -lm -lGL -lGLU -lglut
#LOADLIBES += `pkg-config --libs $(LIBS)`

#Compilation line
COMPILE := $(CC) $(CFLAGS) $(INCLUDE_PATHS)

#FILEs
#---------------Source----------------#
SRCS := $(wildcard $(SDIR)/*.c)

#---------------Object----------------#
OBJS := $(SRCS:$(SDIR)/%.c=$(ODIR)/$(TARGET)/%.o)
#-------------Dependency--------------#
DEPS := $(OBJS:%.o=%.d)


# Build Rules
all: $(OBJS) $(BIN)

debug: all

release: all

run: $(BIN)
	./$(BIN)

$(BIN): $(OBJS) main.c
	$(COMPILE) $(OBJS) main.c -o $(BIN) $(LOADLIBES)

dll: LOADLIBES += -lm -fPIC
dll: $(OBJS)
	$(COMPILE) -shared -o lib$(LIB_NAME).$(DLE) $(OBJS) $(LOADLIBES)

# Include all .d files
-include $(DEPS)

$(ODIR)/$(TARGET)/%.o: $(SDIR)/%.c
	@mkdir -p $(ODIR)/$(TARGET)
	$(COMPILE) -c $< -o $@ $(LOADLIBES)


# Other Rules
init:
	@mkdir $(IDIR) $(SDIR)

clean:
	-rm -rf $(ODIR)/ *.d $(BIN) lib$(LIB_NAME).$(DLE)


.PHONY: all init release debug dll run clean