Makefile

# As seen on
# http://hiltmon.com/blog/2013/07/03/a-simple-c-plus-plus-project-structure/

# Use this to inspect a variable
# $(info $$OBJECTS is [${OBJECTS}])

CC := g++ # This is the main compiler
# CC := clang --analyze # and comment out the linker last line for sanity
SRCDIR := src
BUILDDIR := build
LIBDIR := lib
TARGET := bin/runner

SRCEXT := cpp
SOURCES := $(shell find $(SRCDIR) -type f -name "*.$(SRCEXT)")
OBJECTS := $(patsubst $(SRCDIR)/%,$(BUILDDIR)/%,$(SOURCES:.$(SRCEXT)=.o))
# CFLAGS := -g -Wall -std=c++11 -O3
# the flag -O0 disables all (or most) optimizations
CFLAGS := -g -Wall -std=c++11 -O0
LFLAGS := -lsdsl -ldivsufsort -ldivsufsort64
# LIB := -pthread -L lib -lboost_thread-mt -lboost_filesystem-mt -lboost_system-mt
LIB := -L $(LIBDIR) -L /usr/local/lib
INC := -I include -I /usr/local/include

TEST_TARGET := bin/tester
TEST_SRCDIR := test
TEST_BUILDDIR := $(BUILDDIR)/test
TEST_SOURCES := $(shell find $(TEST_SRCDIR) -type f -name "*.$(SRCEXT)")
TEST_OBJECTS := $(patsubst $(TEST_SRCDIR)/%,$(TEST_BUILDDIR)/%,$(TEST_SOURCES:.$(SRCEXT)=.o))
OBJECTS_NO_MAIN := $(patsubst $(BUILDDIR)/main.o,,$(OBJECTS))

GTESTDIR := $(TEST_SRCDIR)/gtest-1.7.0

$(TARGET): $(OBJECTS)
	@echo " Linking...";
	$(CC) $^ -o $(TARGET) $(LIB) $(LFLAGS)
	# @echo " Running..."; $(TARGET) test/sample4.json

$(BUILDDIR)/%.o: $(SRCDIR)/%.$(SRCEXT)
	@mkdir -p $(BUILDDIR)
	$(CC) $(CFLAGS) $(INC) -c -o $@ $<

eval:
	@echo " Evaluation.."
	@make
	@scripts/eval

clean:
	@echo " Cleaning...";
	$(RM) -r $(BUILDDIR) $(TARGET) $(TEST_TARGET)

# Tests
$(BUILDDIR)/gtest-all.o: $(GTESTDIR)/src/gtest-all.cc
	@echo " Compiling gtest-all.cc..."
	g++ -isystem $(GTESTDIR)/include -I$(GTESTDIR) -pthread -c \
		$(GTESTDIR)/src/gtest-all.cc -o build/gtest-all.o

$(BUILDDIR)/gtest_main.o: $(GTESTDIR)/src/gtest_main.cc
	@echo " Compiling gtest_main.cc..."
	g++ -isystem $(GTESTDIR)/include -I$(GTESTDIR) -pthread -c \
		$(GTESTDIR)/src/gtest_main.cc -o build/gtest_main.o

$(LIBDIR)/gtest_main.a: $(BUILDDIR)/gtest_main.o $(BUILDDIR)/gtest-all.o
	@echo " Creating gtest library archive..."
	ar -rv $(LIBDIR)/gtest_main.a $(BUILDDIR)/gtest-all.o $(BUILDDIR)/gtest_main.o

# $(TEST_TARGET): $(OBJECTS_NO_MAIN) $(TEST_SOURCES) $(LIBDIR)/gtest_main.a
$(TEST_TARGET): $(OBJECTS_NO_MAIN) $(TEST_OBJECTS) $(LIBDIR)/gtest_main.a
	@echo " Building tests...";
	$(CC) $(CFLAGS) -isystem ${GTESTDIR}/include $(INC) $(LIB) $(LFLAGS) \
		-pthread $^ -o $(TEST_TARGET)

$(TEST_BUILDDIR)/%.o: $(TEST_SRCDIR)/%.$(SRCEXT) $(LIBDIR)/gtest_main.a
	@mkdir -p $(TEST_BUILDDIR)
	$(CC) $(CFLAGS) $(INC) -isystem ${GTESTDIR}/include -c -o $@ $<

test: $(TEST_TARGET)
	@echo " Running tests..."
	$(TEST_TARGET)

run: $(TARGET)
	@echo " Running..."
	$(TARGET)

.PHONY: clean test run