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51 lines
1.7 KiB
51 lines
1.7 KiB
# encoding: utf-8 |
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# cxx11.py -- check if compiler can compile C++11 code with lambdas |
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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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# CXX11_MANDATORY(optional) -- fail if C++11 not available |
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# Output: |
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# HAVE_CXX11 -- true if C++11 available, otherwise else |
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def check_cxx11(ctx, msg): |
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try: |
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# not best way, but this check |
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# was written for exactly mainui_cpp, |
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# where lambdas are mandatory |
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ctx.check_cxx( |
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fragment='int main( void ){ auto pfnLambda = [](){}; return 0;}', |
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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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conf.env.HAVE_CXX11 = True # predict state |
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if not check_cxx11(conf, 'Checking if \'{0}\' supports C++11'.format(conf.env.COMPILER_CC)): |
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modern_cpp_flags = { |
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'msvc': [], |
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'default': ['-std=c++11'] |
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} |
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flags = get_flags_by_compiler(modern_cpp_flags, conf.env.COMPILER_CC) |
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if(len(flags) == 0): |
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conf.env.HAVE_CXX11 = False |
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else: |
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env_stash = conf.env |
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conf.env.append_unique('CXXFLAGS', flags) |
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if not check_cxx11(conf, '...trying with additional flags'): |
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conf.env.HAVE_CXX11 = False |
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conf.env = env_stash |
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if getattr(conf.env, 'CXX11_MANDATORY'): |
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conf.fatal('C++11 support not available!') |
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