MakeFile

# === Compiler & Flags ===
CC = gcc
CFLAGS = -Ofast -march=native -funroll-loops -ffast-math -I fabe13

# Detect platform (for linking -lrt only on Linux)
UNAME_S := $(shell uname -s)
ifeq ($(UNAME_S), Darwin)
    LRT_FLAG =
else
    LRT_FLAG = -lrt
endif

LDLIBS = -lm $(LRT_FLAG)

# === Source Files ===
SRC_DIR       = fabe13
TEST_DIR      = fabe13/tests
BUILD_DIR     = build

LIB_SRC       = $(SRC_DIR)/fabe13.c
BENCH_SRC     = $(SRC_DIR)/benchmark_fabe13.c
TEST_SRC      = $(TEST_DIR)/test_fabe13.c

LIB_OBJ       = $(BUILD_DIR)/fabe13.o
BENCH_BIN     = $(BUILD_DIR)/fabe13_benchmark
TEST_BIN      = $(BUILD_DIR)/fabe13_test

# === Default Target ===
all: $(BENCH_BIN) $(TEST_BIN)

# Create build directory if needed
$(BUILD_DIR):
	mkdir -p $(BUILD_DIR)

# 1) Build library object
$(LIB_OBJ): $(LIB_SRC) | $(BUILD_DIR)
	$(CC) $(CFLAGS) -c $< -o $@

# 2) Benchmark binary
$(BENCH_BIN): $(LIB_OBJ) $(BENCH_SRC) | $(BUILD_DIR)
	$(CC) $(CFLAGS) -DENABLE_FABE13_BENCHMARK=1 $^ -o $@ $(LDLIBS)

# 3) Unit test binary
$(TEST_BIN): $(LIB_OBJ) $(TEST_SRC) | $(BUILD_DIR)
	$(CC) $(CFLAGS) $^ -o $@ $(LDLIBS)

# === Convenience Targets ===
run-benchmark: $(BENCH_BIN)
	./$(BENCH_BIN)

run-test: $(TEST_BIN)
	./$(TEST_BIN)

clean:
	rm -rf $(BUILD_DIR)

.PHONY: all clean run-test run-benchmark