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48 lines
1.7 KiB
48 lines
1.7 KiB
4 years ago
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# encoding: utf-8
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# force_32bit.py -- force compiler to create 32-bit code
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# Copyright (C) 2018 a1batross
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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try: from fwgslib import get_flags_by_compiler
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except: from waflib.extras.fwgslib import get_flags_by_compiler
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from waflib import Configure
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# Input:
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# BIT32_MANDATORY(optional) -- fail if 32bit mode not available
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# Output:
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# DEST_SIZEOF_VOID_P -- an integer, equals sizeof(void*) on target
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@Configure.conf
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def check_32bit(ctx, *k, **kw):
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if not 'msg' in kw:
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kw['msg'] = 'Checking if \'%s\' can target 32-bit' % ctx.env.COMPILER_CC
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if not 'mandatory' in kw:
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kw['mandatory'] = False
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return ctx.check_cc( fragment='int main(void){int check[sizeof(void*)==4?1:-1];return 0;}', *k, **kw)
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def configure(conf):
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flags = ['-m32'] if not conf.env.DEST_OS == 'darwin' else ['-arch', 'i386']
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if conf.check_32bit():
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conf.env.DEST_SIZEOF_VOID_P = 4
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elif conf.env.BIT32_MANDATORY and conf.check_32bit(msg = '...trying with additional flags', cflags = flags, linkflags = flags):
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conf.env.LINKFLAGS += flags
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conf.env.CXXFLAGS += flags
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conf.env.CFLAGS += flags
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conf.env.DEST_SIZEOF_VOID_P = 4
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else:
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conf.env.DEST_SIZEOF_VOID_P = 8
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if conf.env.BIT32_MANDATORY:
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conf.fatal('Compiler can\'t create 32-bit code!')
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