Xash3D FWGS engine.
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# encoding: utf-8
# force_32bit.py -- force compiler to create 32-bit code
# 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
# Input:
# BIT32_MANDATORY(optional) -- fail if 32bit mode not available
# BIT32_ALLOW64(optional) -- ignore all checks, just set DEST_SIZEOF_VOID_P to 8
# Output:
# DEST_SIZEOF_VOID_P -- an integer, equals sizeof(void*) on target
def check_32bit(ctx, msg):
try:
ctx.check_cc(
fragment='''int main( void )
{
int check[sizeof(void*) == 4 ? 1: -1];
return 0;
}''',
msg = msg)
except ctx.errors.ConfigurationError:
return False
return True
def configure(conf):
if getattr(conf.env, 'BIT32_ALLOW64'):
conf.env.DEST_SIZEOF_VOID_P = 8
else:
if check_32bit(conf, 'Checking if \'{0}\' can target 32-bit'.format(conf.env.COMPILER_CC)):
conf.env.DEST_SIZEOF_VOID_P = 4 # predict state
else:
flag = '-m32'
# Think different.
if(conf.env.DEST_OS == 'darwin'):
flag = '-arch i386'
env_stash = conf.env
conf.env.append_value('LINKFLAGS', [flag])
conf.env.append_value('CFLAGS', [flag])
conf.env.append_value('CXXFLAGS', [flag])
if check_32bit(conf, '...trying with additional flags'.format(conf.env.COMPILER_CC)):
conf.env.DEST_SIZEOF_VOID_P = 4
else:
conf.env.DEST_SIZEOF_VOID_P = 8
conf.env = env_stash
if getattr(conf.env, 'BIT32_MANDATORY') and conf.env.DEST_SIZEOF_VOID_P == 8:
conf.fatal('Compiler can\'t create 32-bit code!')
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