Xash3D FWGS engine.
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# encoding: utf-8
# xcompile.py -- crosscompiling utils
# Copyright (C) 2018 a1batross
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
from fwgslib import get_flags_by_compiler
import os
import sys
# Output:
# CROSSCOMPILING -- set to true, if crosscompiling is enabled
# DEST_OS2 -- as some operating systems is built on top of another, it's better to not change DEST_OS,
# instead of this DEST_OS2 is defined with target value
# For example: android is built on top of linux and have many things in common,
# but it can't be considered as default GNU/Linux.
# Possible values:
# DEST_OS2 DEST_OS
# 'android' 'linux'
class Android:
arch = None
toolchain = None
api = None
toolchain_path = None
ndk_home = None
is_hardfloat = False
# TODO: New Android NDK support?
# TODO: Crystax support?
# TODO: Support for everything else than linux-x86_64?
# TODO: Determine if I actually need to implement listed above
def is_arm(self):
'''
Checks if selected architecture is **32-bit** ARM
'''
return self.arch.startswith('armeabi')
def is_x86(self):
'''
Checks if selected architecture is **32-bit** or **64-bit** x86
'''
return self.arch.startswith('x86')
def is_arm64(self):
'''
Checks if selected architecture is AArch64
'''
return self.arch == 'aarch64'
def is_clang(self):
'''
Checks if selected toolchain is Clang (TODO)
'''
return self.toolchain.startswith('clang')
def is_hardfp(self):
return self.is_hardfloat
def gen_toolchain_path(self):
path = 'toolchains'
if self.is_clang():
raise Exception('Clang is not supported yet')
else:
if self.is_x86():
toolchain_folder = self.arch + '-' + self.toolchain
elif self.is_arm():
toolchain_folder = 'arm-linux-androideabi-' + self.toolchain
else:
toolchain_folder = self.arch + '-linux-android-' + self.toolchain
if sys.platform.startswith('linux'):
toolchain_host = 'linux'
elif sys.platform.startswith('darwin'):
toolchain_host = 'darwin'
elif sys.platform.startswith('win32') or sys.platform.startswith('cygwin'):
toolchain_host = 'windows'
else: raise Exception('Unsupported by NDK host platform')
toolchain_host += '-'
# Assuming we are building on x86
if sys.maxsize > 2**32:
toolchain_host += 'x86_64'
else: toolchain_host += 'x86'
if self.arch == 'x86':
triplet = 'i686-linux-android-'
elif self.is_arm():
triplet = 'arm-linux-androideabi-'
else:
triplet = self.arch + '-linux-android-'
return os.path.join(path, toolchain_folder, 'prebuilt', toolchain_host, 'bin', triplet)
def cc(self):
return os.path.abspath(os.path.join(self.ndk_home, self.toolchain_path + 'gcc'))
def cxx(self):
return os.path.abspath(os.path.join(self.ndk_home, self.toolchain_path + 'g++'))
def system_stl(self):
# TODO: proper STL support
return os.path.abspath(os.path.join(self.ndk_home, 'sources', 'cxx-stl', 'system', 'include'))
def sysroot(self):
arch = self.arch
if self.is_arm():
arch = 'arm'
elif self.is_arm64():
arch = 'arm64'
path = 'platforms/android-{0}/arch-{1}'.format(self.api, arch)
return os.path.abspath(os.path.join(self.ndk_home, path))
def cflags(self):
cflags = ['--sysroot={0}'.format(self.sysroot()), '-DANDROID', '-D__ANDROID__']
cflags += ['-I{0}'.format(self.system_stl())]
if self.is_arm():
if self.arch == 'armeabi-v7a':
# ARMv7 support
cflags += ['-mthumb', '-mfpu=neon', '-mcpu=cortex-a9', '-mvectorize-with-neon-quad', '-DHAVE_EFFICIENT_UNALIGNED_ACCESS', '-DVECTORIZE_SINCOS']
if self.is_hardfloat:
cflags += ['-D_NDK_MATH_NO_SOFTFP=1', '-mhard-float', '-mfloat-abi=hard', '-DLOAD_HARDFP', '-DSOFTFP_LINK']
else:
cflags += ['-mfloat-abi=softfp'] # Tegra 2 sucks
else:
# ARMv5 support
cflags += ['-march=armv5te', '-mtune=xscale', '-msoft-float']
elif self.is_x86():
cflags += ['-mtune=atom', '-march=atom', '-mssse3', '-mfpmath=sse', '-DVECTORIZE_SINCOS', '-DHAVE_EFFICIENT_UNALIGNED_ACCESS']
return cflags
def ldflags(self):
ldflags = ['--sysroot={0}'.format(self.sysroot())]
if self.is_arm():
if self.arch == 'armeabi-v7a':
ldflags += ['-march=armv7-a', '-Wl,--fix-cortex-a8']
if self.is_hardfloat:
ldflags += ['-Wl,--no-warn-mismatch']
else:
ldflags += ['-march=armv5te']
return ldflags
def __init__(self, ndk_home, arch, toolchain, api):
self.ndk_home = ndk_home
self.arch = arch
if self.arch == 'armeabi-v7a-hard':
self.arch = 'armeabi-v7a' # Only armeabi-v7a have hard float ABI
self.is_hardfloat = True
self.toolchain = toolchain
self.api = api
self.toolchain_path = self.gen_toolchain_path()
def options(opt):
android = opt.add_option_group('Android options')
android.add_option('--android', action='store', dest='ANDROID_OPTS', default=None,
help='enable building for android, format: --android=<arch>,<toolchain>,<api>, example: --android=armeabi-v7a-hard,4.9,9')
def configure(conf):
if conf.options.ANDROID_OPTS:
for i in ['ANDROID_NDK_HOME', 'ANDROID_NDK']:
android_ndk_path = os.getenv(i)
if android_ndk_path != None:
break
if not android_ndk_path:
conf.fatal('Set ANDROID_NDK_HOME environment variable pointing to the root of Android NDK!')
values = conf.options.ANDROID_OPTS.split(',')
if len(values) != 3:
conf.fatal('Invalid --android paramater value!')
valid_archs = ['x86', 'x86_64', 'armeabi', 'armeabi-v7a', 'armeabi-v7a-hard', 'aarch64', 'mipsel', 'mips64el']
if values[0] not in valid_archs:
conf.fatal('Unknown arch: {0}. Supported: {1}'.format(values[0], ', '.join(valid_archs)))
android = Android(android_ndk_path, values[0], values[1], values[2])
conf.environ['CC'] = android.cc()
conf.environ['CXX'] = android.cxx()
conf.env.CFLAGS += android.cflags()
conf.env.CXXFLAGS += android.cflags()
conf.env.LINKFLAGS += android.ldflags()
conf.env.HAVE_M = True
if android.is_hardfp():
conf.env.LIB_M = ['m_hard']
else: conf.env.LIB_M = ['m']
conf.env.PREFIX = '/lib/{0}'.format(android.arch)
conf.msg('Selected Android NDK', android_ndk_path)
# no need to print C/C++ compiler, as it would be printed by compiler_c/cxx
conf.msg('... C/C++ flags', ' '.join(android.cflags()).replace(android_ndk_path, '$NDK'))
conf.msg('... linker flags', ' '.join(android.ldflags()).replace(android_ndk_path, '$NDK'))
# conf.env.ANDROID_OPTS = android
conf.env.DEST_OS2 = 'android'
# else:
# conf.load('compiler_c compiler_cxx') # Use host compiler :)