OBJECTS = counts.o tests.o

# OS identification from: https://stackoverflow.com/questions/714100/os-detecting-makefile
OS := $(shell uname -s)

ifeq ($(OS), Darwin)
  CUNIT_PATH_PREFIX = /usr/local/Cellar/cunit/2.1-3/
  CUNIT_DIRECTORY = cunit
endif
ifeq ($(OS), Linux)
  CUNIT_PATH_PREFIX = /usr/
  CUNIT_DIRECTORY = CUnit/
endif

CC = gcc
NO_DEBUG_FLAGS = -c -Wall -std=c11
DEBUG_FLAGS = -g -c -Wall -std=c11
FLAGS = $(DEBUG_FLAGS)

SRC = helper.c
TST = test.c
GEX = test-gprof
VEX = test-valgrind
TEX = tests
FLAGS = -pg -fprofile-arcs -ftest-coverage
CFLAGS = -L $(CUNIT_PATH_PREFIX)lib -I $(CUNIT_PATH_PREFIX)include/$(CUNIT_DIRECTORY)
CLIB = -lcunit

.PHONY: clean
clean:
    rm -rf *~ *.o $(GEX) $(TEX) $(VEX) *.dSYM *.gc?? analyze.txt gmon.out

helper.o: helper.c
    gcc -c -g -O0 -Wall -std=c11 $(SRC)

test.o: test.c
    gcc -c -g -O0 -Wall -std=c11 -I $(CUNIT_PATH_PREFIX)include/$(CUNIT_DIRECTORY) $(TST)

c-exec: helper.o
    gcc -g -O0 -Wall $(FLAGS) $(CFLAGS) -o $(GEX) $(SRC) main.c

c-test: test.o helper.o
    gcc -g -O0 -Wall $(FLAGS) $(CFLAGS) -o $(TEX) $(SRC) $(TST) $(CLIB)

v-exec: test.o
    gcc -g -O0 -Wall $(CFLAGS) -o $(VEX) $(SRC) main.c

.PHONY: andRunPerformance
andRunPerformance:
    make clean
    make c-exec
    ./$(GEX)
    gprof -b ./$(GEX) gmon.out > analyze.txt
    gcov $(SRC)
    @echo "Look at analyze.txt for gprof timing data"
    @echo "Look at $(SRC).gcov for gcov annotated source code with execution counts"

.PHONY: andRunTests
andRunTests:
    make clean
    make c-test
    ./$(TEX)
    gcov $(SRC)
    @echo "Look at $(SRC).gcov for gcov annotated source code with execution counts"

.PHONY: andRunCallGrind
andRunCallGrind:
    make clean
    make v-exec
    @echo "******************************************************************************"
    @echo "** Running program on large file using callgrind. This may take a minute... **"
    @echo "******************************************************************************"
    valgrind --tool=callgrind ./$(VEX) 1000 1000
    @echo "******************************************************************************"
    @echo "** Done! Use callgrind_annotate to interpret the data file                  **"
    @echo "******************************************************************************"