GNU Make unicorns.

Makefile

# GNU Make unicorns.

# TODO: Tests - Solve the problem first, then write the code
# TODO: Lints - Enforce Google's C++ style guide

# The main C+ compiler
CC = g++

# The main Shell environment
SHELL = /bin/bash

# -Wall prints "all" warning messages
# -g generates additional information for use with gdb
# -std - compiles sources in both the C++03 and the C++11 standard
CFLAGS += -Wall -g -std=c++0x -O3

# The output executable file
EXE = app
SOURCE_EXT = cc

SOURCE = src
BUILD = build
INCLUDE = include
TARGET = $(BUILD)/bin

SOURCES = $(shell find $(SOURCE) -type f -name *.$(SOURCE_EXT))
OBJECTS = $(patsubst $(SOURCE)/%,$(BUILD)/%,$(SOURCES:.$(SOURCE_EXT)=.o))

# Include boost libraries.
LIBS += -L lib -lboost_program_options -lboost_filesystem -lboost_system

$(TARGET): $(OBJECTS)
	@echo ""
	@echo " Linking..."
	@mkdir -p $(TARGET)
	@echo " $(CC) $^ -o $(TARGET)/$(EXE) $(LIBS)"; $(CC) $^ -o $(TARGET)/$(EXE) $(LIBS)
	@echo ""
	@echo " Symlinking..."
	@echo " $(TARGET)/$(EXE)"
	@ln -s $(TARGET)/$(EXE) ./$(EXE)


$(BUILD)/%.o: $(SOURCE)/%.$(SOURCE_EXT)
	@echo ""
	@echo " Building..."
	@mkdir -p $(BUILD)
	@echo " $(CC) -I $(INCLUDE) -c -o $@ $<"; $(CC) -I $(INCLUDE) -c -o $@ $<

clean:
	@echo " Cleaning..."
	@echo " $(RM) -r $(BUILD) $(TARGET)/$(EXE) $(EXE)"; $(RM) -r $(BUILD) $(TARGET)/$(EXE) $(EXE)

.PHONY: clean