# Configures the build to use the Android NDK toolchain if supplied on the command line

import os
import platform
import subprocess
import SCons

compiler_suffix = ""
if platform.system() == "Windows":
    compiler_suffix = ".cmd"

toolchain_root = SCons.Script.Main.GetOption('toolchain-root')

if not toolchain_root:
    print("Path to Android standalone toolchain must be set with --toolchain-root when using android_toolchain.vars")
    SCons.Script.Exit(1)

toolchain_bindir = os.path.join(toolchain_root, 'bin')

# Get the default SCons path as a list
default_path = SCons.Defaults.DefaultEnvironment()['ENV']['PATH'].split(os.pathsep)

# Put the toolchain path first so we prefer all tools from there in subprocs
ENV = {
    'PATH' : os.pathsep.join([toolchain_bindir] + default_path)
}

CC=os.path.join(toolchain_bindir, "clang" + compiler_suffix)
CXX=os.path.join(toolchain_bindir, "clang++" + compiler_suffix)

try:
   AR = subprocess.check_output([CXX, '-print-prog-name=ar']).strip()
   AS = subprocess.check_output([CXX, '-print-prog-name=as']).strip()
   OBJCOPY = subprocess.check_output([CXX, '-print-prog-name=objcopy']).strip()
except subprocess.CalledProcessError as e:
   print("Failed while invoking toolchain binary " + CXX + ": " + e.output)
   SCons.Script.Exit(-1)
except OSError as e:
   print("Failed to invoke toolchain binary " + CXX + ": " + str(e))
   SCons.Script.Exit(-1)

LINKFLAGS='-static-libstdc++ -fuse-ld=gold'
CPPDEFINES='__ANDROID_API__=21 _LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR'

TARGET_OS="android"
TOOLS="gcc g++ gnulink ar gas"
PROGSUFFIX = ""