Upgrade Android NDK to r23 LTS

1 files changed, 75 insertions, 257 deletions

diff --git a/platform/android/detect.py b/platform/android/detect.py
index 0099ac7e0d..47cfade765 100644
--- a/platform/android/detect.py
+++ b/platform/android/detect.py
@@ -1,7 +1,7 @@
 import os
 import sys
 import platform
-from distutils.version import LooseVersion
+import subprocess
 
 
 def is_active():
@@ -13,41 +13,35 @@ def get_name():
 
 
 def can_build():
-    return ("ANDROID_SDK_ROOT" in os.environ) or ("ANDROID_HOME" in os.environ)
-
-
-def get_platform(platform):
-    return int(platform.split("-")[1])
+    return os.path.exists(get_env_android_sdk_root())
 
 
 def get_opts():
     from SCons.Variables import BoolVariable, EnumVariable
 
     return [
-        ("ANDROID_NDK_ROOT", "Path to the Android NDK", get_android_ndk_root()),
-        ("ANDROID_SDK_ROOT", "Path to the Android SDK", get_android_sdk_root()),
+        ("ANDROID_SDK_ROOT", "Path to the Android SDK", get_env_android_sdk_root()),
         ("ndk_platform", 'Target platform (android-<api>, e.g. "android-24")', "android-24"),
         EnumVariable("android_arch", "Target architecture", "arm64v8", ("armv7", "arm64v8", "x86", "x86_64")),
     ]
 
 
 # Return the ANDROID_SDK_ROOT environment variable.
-# While ANDROID_HOME has been deprecated, it's used as a fallback for backward
-# compatibility purposes.
-def get_android_sdk_root():
-    if "ANDROID_SDK_ROOT" in os.environ:
-        return os.environ.get("ANDROID_SDK_ROOT", 0)
-    else:
-        return os.environ.get("ANDROID_HOME", 0)
+def get_env_android_sdk_root():
+    return os.environ.get("ANDROID_SDK_ROOT", -1)
 
 
-# Return the ANDROID_NDK_ROOT environment variable.
-# We generate one for this build using the ANDROID_SDK_ROOT env
-# variable and the project ndk version.
-# If the env variable is already defined, we override it with
-# our own to match what the project expects.
-def get_android_ndk_root():
-    return get_android_sdk_root() + "/ndk/" + get_project_ndk_version()
+def get_min_sdk_version(platform):
+    return int(platform.split("-")[1])
+
+
+def get_android_ndk_root(env):
+    return env["ANDROID_SDK_ROOT"] + "/ndk/" + get_ndk_version()
+
+
+# This is kept in sync with the value in 'platform/android/java/app/config.gradle'.
+def get_ndk_version():
+    return "23.2.8568313"
 
 
 def get_flags():
@@ -56,133 +50,70 @@ def get_flags():
     ]
 
 
-def create(env):
-    tools = env["TOOLS"]
-    if "mingw" in tools:
-        tools.remove("mingw")
-    if "applelink" in tools:
-        tools.remove("applelink")
-        env.Tool("gcc")
-    return env.Clone(tools=tools)
-
-
-# Check if ANDROID_NDK_ROOT is valid.
-# If not, install the ndk using ANDROID_SDK_ROOT and sdkmanager.
+# Check if Android NDK version is installed
+# If not, install it.
 def install_ndk_if_needed(env):
     print("Checking for Android NDK...")
-    env_ndk_version = get_env_ndk_version(env["ANDROID_NDK_ROOT"])
-    if env_ndk_version is None:
-        # Reinstall the ndk and update ANDROID_NDK_ROOT.
-        print("Installing Android NDK...")
-        if env["ANDROID_SDK_ROOT"] is None:
-            raise Exception("Invalid ANDROID_SDK_ROOT environment variable.")
-
-        import subprocess
-
+    sdk_root = env["ANDROID_SDK_ROOT"]
+    if not os.path.exists(get_android_ndk_root(env)):
         extension = ".bat" if os.name == "nt" else ""
-        sdkmanager_path = env["ANDROID_SDK_ROOT"] + "/cmdline-tools/latest/bin/sdkmanager" + extension
-        ndk_download_args = "ndk;" + get_project_ndk_version()
-        subprocess.check_call([sdkmanager_path, ndk_download_args])
-
-        env["ANDROID_NDK_ROOT"] = env["ANDROID_SDK_ROOT"] + "/ndk/" + get_project_ndk_version()
-        print("ANDROID_NDK_ROOT: " + env["ANDROID_NDK_ROOT"])
+        sdkmanager = sdk_root + "/cmdline-tools/latest/bin/sdkmanager" + extension
+        if os.path.exists(sdkmanager):
+            # Install the Android NDK
+            print("Installing Android NDK...")
+            ndk_download_args = "ndk;" + get_ndk_version()
+            subprocess.check_call([sdkmanager, ndk_download_args])
+        else:
+            print("Cannot find " + sdkmanager)
+            print(
+                "Please ensure ANDROID_SDK_ROOT is correct and cmdline-tools are installed, or install NDK version "
+                + get_ndk_version()
+                + " manually."
+            )
+            sys.exit()
+    env["ANDROID_NDK_ROOT"] = get_android_ndk_root(env)
 
 
 def configure(env):
     install_ndk_if_needed(env)
-
-    # Workaround for MinGW. See:
-    # https://www.scons.org/wiki/LongCmdLinesOnWin32
-    if os.name == "nt":
-
-        import subprocess
-
-        def mySubProcess(cmdline, env):
-            # print("SPAWNED : " + cmdline)
-            startupinfo = subprocess.STARTUPINFO()
-            startupinfo.dwFlags |= subprocess.STARTF_USESHOWWINDOW
-            proc = subprocess.Popen(
-                cmdline,
-                stdin=subprocess.PIPE,
-                stdout=subprocess.PIPE,
-                stderr=subprocess.PIPE,
-                startupinfo=startupinfo,
-                shell=False,
-                env=env,
-            )
-            data, err = proc.communicate()
-            rv = proc.wait()
-            if rv:
-                print("=====")
-                print(err)
-                print("=====")
-            return rv
-
-        def mySpawn(sh, escape, cmd, args, env):
-
-            newargs = " ".join(args[1:])
-            cmdline = cmd + " " + newargs
-
-            rv = 0
-            if len(cmdline) > 32000 and cmd.endswith("ar"):
-                cmdline = cmd + " " + args[1] + " " + args[2] + " "
-                for i in range(3, len(args)):
-                    rv = mySubProcess(cmdline + args[i], env)
-                    if rv:
-                        break
-            else:
-                rv = mySubProcess(cmdline, env)
-
-            return rv
-
-        env["SPAWN"] = mySpawn
+    ndk_root = env["ANDROID_NDK_ROOT"]
 
     # Architecture
 
     if env["android_arch"] not in ["armv7", "arm64v8", "x86", "x86_64"]:
-        env["android_arch"] = "armv7"
+        env["android_arch"] = "arm64v8"
 
     print("Building for Android, platform " + env["ndk_platform"] + " (" + env["android_arch"] + ")")
 
-    can_vectorize = True
-    if env["android_arch"] == "x86":
-        env["ARCH"] = "arch-x86"
-        env.extra_suffix = ".x86" + env.extra_suffix
-        target_subpath = "x86-4.9"
-        abi_subpath = "i686-linux-android"
-        arch_subpath = "x86"
-        env["x86_libtheora_opt_gcc"] = True
-    elif env["android_arch"] == "x86_64":
-        if get_platform(env["ndk_platform"]) < 21:
+    if get_min_sdk_version(env["ndk_platform"]) < 21:
+        if env["android_arch"] == "x86_64" or env["android_arch"] == "arm64v8":
             print(
-                "WARNING: android_arch=x86_64 is not supported by ndk_platform lower than android-21; setting"
-                " ndk_platform=android-21"
+                "WARNING: android_arch="
+                + env["android_arch"]
+                + " is not supported by ndk_platform lower than android-21; setting ndk_platform=android-21"
             )
             env["ndk_platform"] = "android-21"
-        env["ARCH"] = "arch-x86_64"
-        env.extra_suffix = ".x86_64" + env.extra_suffix
-        target_subpath = "x86_64-4.9"
-        abi_subpath = "x86_64-linux-android"
-        arch_subpath = "x86_64"
-        env["x86_libtheora_opt_gcc"] = True
-    elif env["android_arch"] == "armv7":
-        env["ARCH"] = "arch-arm"
-        target_subpath = "arm-linux-androideabi-4.9"
-        abi_subpath = "arm-linux-androideabi"
-        arch_subpath = "armeabi-v7a"
+
+    if env["android_arch"] == "armv7":
+        target_triple = "armv7a-linux-androideabi"
+        bin_utils = "arm-linux-androideabi"
         env.extra_suffix = ".armv7" + env.extra_suffix
     elif env["android_arch"] == "arm64v8":
-        if get_platform(env["ndk_platform"]) < 21:
-            print(
-                "WARNING: android_arch=arm64v8 is not supported by ndk_platform lower than android-21; setting"
-                " ndk_platform=android-21"
-            )
-            env["ndk_platform"] = "android-21"
-        env["ARCH"] = "arch-arm64"
-        target_subpath = "aarch64-linux-android-4.9"
-        abi_subpath = "aarch64-linux-android"
-        arch_subpath = "arm64-v8a"
+        target_triple = "aarch64-linux-android"
+        bin_utils = target_triple
         env.extra_suffix = ".armv8" + env.extra_suffix
+    elif env["android_arch"] == "x86":
+        target_triple = "i686-linux-android"
+        bin_utils = target_triple
+        env.extra_suffix = ".x86" + env.extra_suffix
+    elif env["android_arch"] == "x86_64":
+        target_triple = "x86_64-linux-android"
+        bin_utils = target_triple
+        env.extra_suffix = ".x86_64" + env.extra_suffix
+
+    target_option = ["-target", target_triple + str(get_min_sdk_version(env["ndk_platform"]))]
+    env.Append(CCFLAGS=target_option)
+    env.Append(LINKFLAGS=target_option)
 
     # Build type
 
@@ -191,15 +122,11 @@ def configure(env):
             # `-O2` is more friendly to debuggers than `-O3`, leading to better crash backtraces
             # when using `target=release_debug`.
             opt = "-O3" if env["target"] == "release" else "-O2"
-            env.Append(LINKFLAGS=[opt])
             env.Append(CCFLAGS=[opt, "-fomit-frame-pointer"])
         elif env["optimize"] == "size":  # optimize for size
-            env.Append(CCFLAGS=["-Os"])
-            env.Append(LINKFLAGS=["-Os"])
-
+            env.Append(CCFLAGS=["-Oz"])
         env.Append(CPPDEFINES=["NDEBUG"])
-        if can_vectorize:
-            env.Append(CCFLAGS=["-ftree-vectorize"])
+        env.Append(CCFLAGS=["-ftree-vectorize"])
     elif env["target"] == "debug":
         env.Append(LINKFLAGS=["-O0"])
         env.Append(CCFLAGS=["-O0", "-g", "-fno-limit-debug-info"])
@@ -211,7 +138,6 @@ def configure(env):
     env["SHLIBSUFFIX"] = ".so"
 
     if env["PLATFORM"] == "win32":
-        env.Tool("gcc")
         env.use_windows_spawn_fix()
 
     if sys.platform.startswith("linux"):
@@ -224,32 +150,15 @@ def configure(env):
         else:
             host_subpath = "windows"
 
-    compiler_path = env["ANDROID_NDK_ROOT"] + "/toolchains/llvm/prebuilt/" + host_subpath + "/bin"
-    gcc_toolchain_path = env["ANDROID_NDK_ROOT"] + "/toolchains/" + target_subpath + "/prebuilt/" + host_subpath
-    tools_path = gcc_toolchain_path + "/" + abi_subpath + "/bin"
-
-    # For Clang to find NDK tools in preference of those system-wide
-    env.PrependENVPath("PATH", tools_path)
-
-    ccache_path = os.environ.get("CCACHE")
-    if ccache_path is None:
-        env["CC"] = compiler_path + "/clang"
-        env["CXX"] = compiler_path + "/clang++"
-    else:
-        # there aren't any ccache wrappers available for Android,
-        # to enable caching we need to prepend the path to the ccache binary
-        env["CC"] = ccache_path + " " + compiler_path + "/clang"
-        env["CXX"] = ccache_path + " " + compiler_path + "/clang++"
-    env["AR"] = tools_path + "/ar"
-    env["RANLIB"] = tools_path + "/ranlib"
-    env["AS"] = tools_path + "/as"
+    toolchain_path = ndk_root + "/toolchains/llvm/prebuilt/" + host_subpath
+    compiler_path = toolchain_path + "/bin"
+    bin_utils_path = toolchain_path + "/" + bin_utils + "/bin"
 
-    common_opts = ["-gcc-toolchain", gcc_toolchain_path]
-
-    # Compile flags
-
-    env.Append(CPPFLAGS=["-isystem", env["ANDROID_NDK_ROOT"] + "/sources/cxx-stl/llvm-libc++/include"])
-    env.Append(CPPFLAGS=["-isystem", env["ANDROID_NDK_ROOT"] + "/sources/cxx-stl/llvm-libc++abi/include"])
+    env["CC"] = compiler_path + "/clang"
+    env["CXX"] = compiler_path + "/clang++"
+    env["AR"] = compiler_path + "/llvm-ar"
+    env["RANLIB"] = compiler_path + "/llvm-ranlib"
+    env["AS"] = bin_utils_path + "/as"
 
     # Disable exceptions and rtti on non-tools (template) builds
     if env["tools"]:
@@ -261,100 +170,31 @@ def configure(env):
         # Don't use dynamic_cast, necessary with no-rtti.
         env.Append(CPPDEFINES=["NO_SAFE_CAST"])
 
-    lib_sysroot = env["ANDROID_NDK_ROOT"] + "/platforms/" + env["ndk_platform"] + "/" + env["ARCH"]
-
-    # Using NDK unified headers (NDK r15+)
-    sysroot = env["ANDROID_NDK_ROOT"] + "/sysroot"
-    env.Append(CPPFLAGS=["--sysroot=" + sysroot])
-    env.Append(CPPFLAGS=["-isystem", sysroot + "/usr/include/" + abi_subpath])
-    env.Append(CPPFLAGS=["-isystem", env["ANDROID_NDK_ROOT"] + "/sources/android/support/include"])
-    # For unified headers this define has to be set manually
-    env.Append(CPPDEFINES=[("__ANDROID_API__", str(get_platform(env["ndk_platform"])))])
-
     env.Append(
         CCFLAGS=(
-            "-fpic -ffunction-sections -funwind-tables -fstack-protector-strong -fvisibility=hidden"
-            " -fno-strict-aliasing".split()
+            "-fpic -ffunction-sections -funwind-tables -fstack-protector-strong -fvisibility=hidden -fno-strict-aliasing".split()
         )
     )
     env.Append(CPPDEFINES=["NO_STATVFS", "GLES_ENABLED"])
 
-    if get_platform(env["ndk_platform"]) >= 24:
+    if get_min_sdk_version(env["ndk_platform"]) >= 24:
         env.Append(CPPDEFINES=[("_FILE_OFFSET_BITS", 64)])
 
     if env["android_arch"] == "x86":
-        target_opts = ["-target", "i686-none-linux-android"]
-        # The NDK adds this if targeting API < 21, so we can drop it when Godot targets it at least
+        # The NDK adds this if targeting API < 24, so we can drop it when Godot targets it at least
         env.Append(CCFLAGS=["-mstackrealign"])
-
-    elif env["android_arch"] == "x86_64":
-        target_opts = ["-target", "x86_64-none-linux-android"]
-
     elif env["android_arch"] == "armv7":
-        target_opts = ["-target", "armv7-none-linux-androideabi"]
         env.Append(CCFLAGS="-march=armv7-a -mfloat-abi=softfp".split())
         env.Append(CPPDEFINES=["__ARM_ARCH_7__", "__ARM_ARCH_7A__"])
-        # Enable ARM NEON instructions to compile more optimized code.
-        env.Append(CCFLAGS=["-mfpu=neon"])
         env.Append(CPPDEFINES=["__ARM_NEON__"])
-
     elif env["android_arch"] == "arm64v8":
-        target_opts = ["-target", "aarch64-none-linux-android"]
         env.Append(CCFLAGS=["-mfix-cortex-a53-835769"])
         env.Append(CPPDEFINES=["__ARM_ARCH_8A__"])
 
-    env.Append(CCFLAGS=target_opts)
-    env.Append(CCFLAGS=common_opts)
-
     # Link flags
 
-    ndk_version = get_env_ndk_version(env["ANDROID_NDK_ROOT"])
-    if ndk_version != None and LooseVersion(ndk_version) >= LooseVersion("17.1.4828580"):
-        env.Append(LINKFLAGS=["-Wl,--exclude-libs,libgcc.a", "-Wl,--exclude-libs,libatomic.a", "-nostdlib++"])
-    else:
-        env.Append(
-            LINKFLAGS=[
-                env["ANDROID_NDK_ROOT"] + "/sources/cxx-stl/llvm-libc++/libs/" + arch_subpath + "/libandroid_support.a"
-            ]
-        )
-    env.Append(LINKFLAGS=["-shared", "--sysroot=" + lib_sysroot, "-Wl,--warn-shared-textrel"])
-    env.Append(LIBPATH=[env["ANDROID_NDK_ROOT"] + "/sources/cxx-stl/llvm-libc++/libs/" + arch_subpath + "/"])
-    env.Append(
-        LINKFLAGS=[env["ANDROID_NDK_ROOT"] + "/sources/cxx-stl/llvm-libc++/libs/" + arch_subpath + "/libc++_shared.so"]
-    )
-
-    if env["android_arch"] == "armv7":
-        env.Append(LINKFLAGS="-Wl,--fix-cortex-a8".split())
-    env.Append(LINKFLAGS="-Wl,--no-undefined -Wl,-z,noexecstack -Wl,-z,relro -Wl,-z,now".split())
-    env.Append(LINKFLAGS="-Wl,-soname,libgodot_android.so -Wl,--gc-sections".split())
-
-    env.Append(LINKFLAGS=target_opts)
-    env.Append(LINKFLAGS=common_opts)
-
-    env.Append(
-        LIBPATH=[
-            env["ANDROID_NDK_ROOT"]
-            + "/toolchains/"
-            + target_subpath
-            + "/prebuilt/"
-            + host_subpath
-            + "/lib/gcc/"
-            + abi_subpath
-            + "/4.9.x"
-        ]
-    )
-    env.Append(
-        LIBPATH=[
-            env["ANDROID_NDK_ROOT"]
-            + "/toolchains/"
-            + target_subpath
-            + "/prebuilt/"
-            + host_subpath
-            + "/"
-            + abi_subpath
-            + "/lib"
-        ]
-    )
+    env.Append(LINKFLAGS="-Wl,--gc-sections -Wl,--no-undefined -Wl,-z,now".split())
+    env.Append(LINKFLAGS="-Wl,-soname,libgodot_android.so")
 
     env.Prepend(CPPPATH=["#platform/android"])
     env.Append(CPPDEFINES=["ANDROID_ENABLED", "UNIX_ENABLED", "NO_FCNTL"])
@@ -364,25 +204,3 @@ def configure(env):
         env.Append(CPPDEFINES=["VULKAN_ENABLED"])
         if not env["use_volk"]:
             env.Append(LIBS=["vulkan"])
-
-
-# Return the project NDK version.
-# This is kept in sync with the value in 'platform/android/java/app/config.gradle'.
-def get_project_ndk_version():
-    return "21.4.7075529"
-
-
-# Return NDK version string in source.properties (adapted from the Chromium project).
-def get_env_ndk_version(path):
-    if path is None:
-        return None
-    prop_file_path = os.path.join(path, "source.properties")
-    try:
-        with open(prop_file_path) as prop_file:
-            for line in prop_file:
-                key_value = list(map(lambda x: x.strip(), line.split("=")))
-                if key_value[0] == "Pkg.Revision":
-                    return key_value[1]
-    except Exception:
-        print("Could not read source prop file '%s'" % prop_file_path)
-    return None