Makefile

# Windows is not supported!
# MacOS support is untested. It might work if you try harder.

# Set the NDK_HOME path to the actual path before building!
NDK_HOME = /home/<>/Android/Sdk/ndk/27.3.13750724

PLATFORM := $(shell uname -s)

ifeq ($(PLATFORM), Linux)
    NDK_SYSROOT := $(NDK_HOME)/toolchains/llvm/prebuilt/linux-x86_64/sysroot/
	CC_RES_DIR := $(NDK_HOME)/toolchains/llvm/prebuilt/linux-x86_64/lib/clang/18
else
    NDK_SYSROOT := $(NDK_HOME)/toolchains/llvm/prebuilt/darwin-x86_64/sysroot/
	CC_RES_DIR := $(NDK_HOME)/toolchains/llvm/prebuilt/darwin-x86_64/lib/clang/18
endif

CC = clang

CTARGET = --target=aarch64-linux-android30

SYSROOT = --sysroot=$(NDK_SYSROOT)
XFLAGS = -resource-dir=$(CC_RES_DIR) \
	-fPIC -fdata-sections -ffunction-sections -funwind-tables -fstack-protector-strong \
	-no-canonical-prefixes -fvisibility=hidden -fvisibility-inlines-hidden \
	-ffunction-sections -fdata-sections -march=armv8.2-a -rtlib=compiler-rt

CFLAGS = -O3 -Wall -Werror

RUST_BUILD_DIR = target
BUILD_DIR = $(RUST_BUILD_DIR)/aarch64-linux-android/release/deps

SRC_DIR = src/native-lib
SHADER_SRC_DIR = shaders

SOURCES := $(wildcard $(SRC_DIR)/*.c)
OBJS    := $(patsubst $(SRC_DIR)/%.c,$(BUILD_DIR)/%.o,$(SOURCES))

LIB_TARGET := $(BUILD_DIR)/libutils.a


all: $(OBJS) $(LIB_TARGET) rust_build

$(BUILD_DIR)/%.o: $(SRC_DIR)/%.c
	@mkdir -p $(BUILD_DIR)
	$(CC) $(CTARGET) -c $(SYSROOT) $(CFLAGS) $(XFLAGS) $< -o $@

$(LIB_TARGET): $(OBJS)
	@llvm-ar rcs $@ $^

rust_build: $(LIB_TARGET)
	@NDK_SYSROOT="$(NDK_SYSROOT)" \
	CC_RES_DIR="$(CC_RES_DIR)" \
	cargo br

clean:
	@rm -rf $(BUILD_DIR)
	@rm -rf $(RUST_BUILD_DIR)

.PHONY: all rust_build clean