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