2D-platformer/Makefile at develop · Adam-Haas/2D-platformer · GitHub

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SHELL := /bin/sh

PROJECT := 2d-platformer
CXX ?= c++
PKG_CONFIG ?= pkg-config

MODE ?= debug
BUILD_ROOT := build
BUILD_DIR := $(BUILD_ROOT)/$(MODE)
TARGET := $(BUILD_DIR)/$(PROJECT)

SOURCES := $(sort $(wildcard src/*.cpp))
OBJECTS := $(patsubst src/%.cpp,$(BUILD_DIR)/%.o,$(SOURCES))
DEPFILES := $(OBJECTS:.o=.d)

SDL_PACKAGES := sdl2 SDL2_image
SDL_CFLAGS := $(shell $(PKG_CONFIG) --cflags $(SDL_PACKAGES) 2>/dev/null)
SDL_LIBS := $(shell $(PKG_CONFIG) --libs $(SDL_PACKAGES) 2>/dev/null)

CPPFLAGS += -Iinclude $(SDL_CFLAGS)
CXXFLAGS += -std=c++23 -Wall -Wextra -Wpedantic -MMD -MP
LDLIBS += $(SDL_LIBS)

ifeq ($(MODE),debug)
	CXXFLAGS += -O0 -g3
	CPPFLAGS += -DDEBUG
else ifeq ($(MODE),release)
	CXXFLAGS += -O2
	CPPFLAGS += -DNDEBUG
else
	$(error MODE must be either "debug" or "release")
endif

.DEFAULT_GOAL := all

.PHONY: all run clean rebuild release help check-deps

all: $(TARGET)

$(TARGET): $(OBJECTS)
	$(CXX) $(LDFLAGS) $^ $(LDLIBS) -o $@

$(BUILD_DIR)/%.o: src/%.cpp | check-deps
	@mkdir -p $(@D)
	$(CXX) $(CPPFLAGS) $(CXXFLAGS) -c $< -o $@

check-deps:
	@command -v "$(PKG_CONFIG)" >/dev/null 2>&1 || { \
		printf '%s\n' "error: pkg-config is required but was not found."; \
		printf '%s\n' "macOS: brew install pkg-config sdl2 sdl2_image"; \
		printf '%s\n' "Debian/Ubuntu: sudo apt install pkg-config libsdl2-dev libsdl2-image-dev"; \
		exit 1; \
	}
	@"$(PKG_CONFIG)" --exists $(SDL_PACKAGES) || { \
		printf '%s\n' "error: SDL2 and SDL2_image development packages are required."; \
		printf '%s\n' "macOS: brew install sdl2 sdl2_image"; \
		printf '%s\n' "Debian/Ubuntu: sudo apt install libsdl2-dev libsdl2-image-dev"; \
		exit 1; \
	}

run: $(TARGET)
	@./$(TARGET)

release:
	@$(MAKE) MODE=release all

rebuild:
	@$(MAKE) clean
	@$(MAKE) MODE=$(MODE) all

clean:
	$(RM) -r $(BUILD_ROOT)

help:
	@printf '%s\n' \
		"make              Build a debug executable" \
		"make run          Build and run the game" \
		"make release      Build an optimized release executable" \
		"make MODE=release run  Build and run the release executable" \
		"make clean        Remove generated build output" \
		"" \
		"Overrides: CXX=<compiler> PKG_CONFIG=<pkg-config> MODE=debug|release"

-include $(DEPFILES)