CC := /usr/bin/gcc
CFLAGS = -Wall -Wpedantic -I$(INC_DIR) -O2 -fPIC
LDFLAGS := -shared
LDLIBS := -lm

# DIRS
BASE_DIR = $(pwd)
SRC_DIR = src
BIN_DIR = bin
OBJ_DIR = obj
LIB_DIR := lib
BUILD_DIR = build
INC_DIR = include
EXAMPLE_DIR = example

# TARGETS
LIBBALLISTIC := $(LIB_DIR)/libballistic.so
EXAMPLE := $(BIN_DIR)/example
SOURCES := $(wildcard $(SRC_DIR)/*.c)
OBJECTS := $(SOURCES:$(SRC_DIR)/%.c=$(BUILD_DIR)/%.o)

TARGET := $(LIBBALLISTIC)

# ALL TARGET
all: $(TARGET)

# COMPILE MAIN TARGET
$(TARGET): $(OBJECTS) | $(BIN_DIR)
	@mkdir -p lib
	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $^ $(LDLIBS)

# COMPILE OBJECTS
$(BUILD_DIR)/%.o: $(SRC_DIR)/%.c | $(BUILD_DIR)
	$(CC) $(CFLAGS) -c $< -o $@

# COMPILE EXAMPLE
$(EXAMPLE): $(EXAMPLE_DIR)/*.c
	$(CC) $(CFLAGS) -L./lib -o $@ $^ -lballistic

# MAKE DIRS
$(BUILD_DIR):
	mkdir -p $(BUILD_DIR)

$(BIN_DIR):
	mkdir -p $(BIN_DIR)

# CLEAN
clean:
	rm -rf $(BIN_DIR)
	rm -rf $(BUILD_DIR)

distclean: clean
	git submodule deinit --all -f

.PHONY: all clean