103 lines
3.5 KiB
Python
103 lines
3.5 KiB
Python
import os
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import sys
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import my_spawn
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from SCons.Script import ARGUMENTS
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def options(opts):
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opts.Add(
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"android_api_level",
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"Target Android API level",
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"18" if "32" in ARGUMENTS.get("arch", "arm64") else "21",
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)
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opts.Add(
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"ANDROID_NDK_ROOT",
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"Path to your Android NDK installation. By default, uses ANDROID_NDK_ROOT from your defined environment variables.",
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os.environ.get("ANDROID_NDK_ROOT", None),
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)
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def exists(env):
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return "ANDROID_NDK_ROOT" in os.environ or "ANDROID_NDK_ROOT" in ARGUMENTS
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def generate(env):
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if "ANDROID_NDK_ROOT" not in env:
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raise ValueError(
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"To build for Android, ANDROID_NDK_ROOT must be defined. Please set ANDROID_NDK_ROOT to the root folder of your Android NDK installation."
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)
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if env["arch"] not in ("arm64", "x86_64", "arm32", "x86_32"):
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print("Only arm64, x86_64, arm32, and x86_32 are supported on Android. Exiting.")
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Exit()
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if sys.platform == "win32" or sys.platform == "msys":
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my_spawn.configure(env)
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# Validate API level
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api_level = int(env["android_api_level"])
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if "64" in env["arch"] and api_level < 21:
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print("WARN: 64-bit Android architectures require an API level of at least 21; setting android_api_level=21")
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env["android_api_level"] = "21"
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api_level = 21
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# Setup toolchain
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toolchain = env["ANDROID_NDK_ROOT"] + "/toolchains/llvm/prebuilt/"
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if sys.platform == "win32" or sys.platform == "msys":
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toolchain += "windows"
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import platform as pltfm
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if pltfm.machine().endswith("64"):
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toolchain += "-x86_64"
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elif sys.platform.startswith("linux"):
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toolchain += "linux-x86_64"
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elif sys.platform == "darwin":
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toolchain += "darwin-x86_64"
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env.Append(LINKFLAGS=["-shared"])
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env.PrependENVPath("PATH", toolchain + "/bin") # This does nothing half of the time, but we'll put it here anyways
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# Get architecture info
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arch_info_table = {
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"arm32": {
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"march": "armv7-a",
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"target": "armv7a-linux-androideabi",
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"compiler_path": "armv7a-linux-androideabi",
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"ccflags": ["-mfpu=neon"],
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},
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"arm64": {
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"march": "armv8-a",
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"target": "aarch64-linux-android",
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"compiler_path": "aarch64-linux-android",
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"ccflags": [],
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},
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"x86_32": {
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"march": "i686",
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"target": "i686-linux-android",
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"compiler_path": "i686-linux-android",
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"ccflags": ["-mstackrealign"],
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},
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"x86_64": {
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"march": "x86-64",
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"target": "x86_64-linux-android",
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"compiler_path": "x86_64-linux-android",
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"ccflags": [],
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},
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}
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arch_info = arch_info_table[env["arch"]]
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# Setup tools
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env["CC"] = toolchain + "/bin/clang"
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env["CXX"] = toolchain + "/bin/clang++"
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env["LINK"] = toolchain + "/bin/clang++"
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env["AR"] = toolchain + "/bin/llvm-ar"
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env["AS"] = toolchain + "/bin/llvm-as"
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env["STRIP"] = toolchain + "/bin/llvm-strip"
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env["RANLIB"] = toolchain + "/bin/llvm-ranlib"
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env["SHLIBSUFFIX"] = ".so"
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env.Append(
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CCFLAGS=["--target=" + arch_info["target"] + env["android_api_level"], "-march=" + arch_info["march"], "-fPIC"]
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)
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env.Append(CCFLAGS=arch_info["ccflags"])
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env.Append(LINKFLAGS=["--target=" + arch_info["target"] + env["android_api_level"], "-march=" + arch_info["march"]])
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