CC = gcc
CFLAGS = -Wall -Wextra -O2 -Iinclude
LDFLAGS = -lm
LDFLAGS += -lpthread # Multi-threaded capture-render, pthreads producer/consumer
LDFLAGS += -ldl # Dynamic loading symbols
LDFLAGS += -msse4.1 # SIMD - SSE2 for the YUYV to gray conversion

SRCDIR = src
INCDIR = include
BUILDDIR = build
OBJDIR = $(BUILDDIR)/obj

SOURCES = $(wildcard $(SRCDIR)/*.c)
OBJECTS = $(patsubst $(SRCDIR)/%.c,$(OBJDIR)/%.o,$(SOURCES))
TARGET = $(BUILDDIR)/webcam_ascii
PLUGIN_SRCS    = $(wildcard filters/*.c)
PLUGIN_C_SRCS  = $(filter-out filters/%.h, $(PLUGIN_SRCS))
PLUGIN_TARGETS = $(patsubst filters/%.c,$(BUILDDIR)/%.so,$(PLUGIN_C_SRCS))

# Security Testing Targets
TEST_TARGET = $(BUILDDIR)/security_tests
TEST_SRC = ../tests/secutrity_test.c
FILTER_SRCS = filters/edge_detect.c filters/invert.c filters/threshold.c

.PHONY: all clean plugins test

all: $(TARGET) plugins

# Main binary
$(TARGET): $(OBJECTS)
	$(CC) $^ -o $@ $(LDFLAGS)

$(OBJDIR)/%.o: $(SRCDIR)/%.c | $(OBJDIR)
	$(CC) $(CFLAGS) -c $< -o $@

$(OBJDIR):
	mkdir -p $(OBJDIR)

# Plugins compilation
plugins: $(PLUGIN_TARGETS)

$(BUILDDIR)/%.so: filters/%.c | $(BUILDDIR)
	$(CC) $(CFLAGS) -fPIC -shared $< -o $@.tmp
	mv $@.tmp $@

# Automated Unit Tests Execution
test: $(BUILDDIR)
	$(CC) -I.. $(CFLAGS) -DTESTING $(TEST_SRC) $(FILTER_SRCS) -o $(TEST_TARGET) -lcheck -lsubunit -lm -lrt -lpthread
	@echo "   RUNNING ALL PLUGINS INVARIANT TEST    "
	./$(TEST_TARGET)

$(BUILDDIR):
	mkdir -p $(BUILDDIR)

# Cleanup
clean:
	rm -rf $(BUILDDIR)