Makefile

# ============================================================================
# ExtBit ProtoUI Reference Implementation
# Copyright (c) 2026 ExtBit LLC. All rights reserved.
# License: MIT
# ============================================================================

CXX      ?= g++
AR       ?= ar
CXXFLAGS ?= -std=c++20 -O2 -Wall -Wextra -fPIC
ARFLAGS  ?= rcs

# Directories (allow external callers to override IMGUI_DIR)
IMGUI_DIR ?= ../external/imgui
INC_DIR   := include
SRC_DIR   := src
BUILD_DIR := build
LIB_DIR   := lib

# Target
TARGET    := $(LIB_DIR)/libProtoUI.a

# Sources & Objects
SRCS      := $(wildcard $(SRC_DIR)/*.cpp)
OBJS      := $(patsubst $(SRC_DIR)/%.cpp,$(BUILD_DIR)/%.o,$(SRCS))

# Include Paths
INCLUDES  := -I$(INC_DIR) -I$(IMGUI_DIR)

.PHONY: all clean

all: $(TARGET)

# Compile C++ source files into build/
$(BUILD_DIR)/%.o: $(SRC_DIR)/%.cpp | $(BUILD_DIR)
	$(CXX) $(CXXFLAGS) $(INCLUDES) -c $< -o $@

# Archive object files into libProtoUI.a
$(TARGET): $(OBJS) | $(LIB_DIR)
	$(AR) $(ARFLAGS) $@ $^

# Ensure output directories exist
$(BUILD_DIR) $(LIB_DIR):
	mkdir -p $@

clean:
	rm -rf $(BUILD_DIR) $(LIB_DIR)