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2032f6de8a
This makes the main source code look a little cleaner, at the expense of background magic happening in the configure-generated config.h. But this magic was already happening for _GNU_SOURCE, __EXTENSIONS__ and the like. The only wrinkle is that newer versions of NcursesW cause ./configure to include "-D_XOPEN_SOURCE=600" as part of the compilation command line--on systems that support _XOPEN_SOURCE=700. The AC_DEFINE/AC_DEFINE_UNQUOTED macros automatically comment out any "#undef" lines in config.h, so the file lib/xopen_source.h works around this limitation. It is automatically included by config.h.
45 lines
1.6 KiB
C
45 lines
1.6 KiB
C
/************************************************************************
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* *
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* Star Traders: A Game of Interstellar Trading *
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* Copyright (C) 1990-2018, John Zaitseff *
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* *
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************************************************************************/
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/*
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Author: John Zaitseff <J.Zaitseff@zap.org.au>
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$Id$
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This file, xopen_source.h, redefines _XOPEN_SOURCE to be the latest
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version that is supported by the operating system's C library. It is
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used by the Autoconf macro in m4/xopen_source.m4.
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This program is free software: you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation, either version 3 of the License, or (at your
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option) any later version.
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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 GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see https://www.gnu.org/licenses/.
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*/
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#ifndef included_XOPEN_SOURCE_H
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#define included_XOPEN_SOURCE_H
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#ifdef LATEST_XOPEN_SOURCE
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# if ! defined(_XOPEN_SOURCE) || _XOPEN_SOURCE < LATEST_XOPEN_SOURCE
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# undef _XOPEN_SOURCE
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# define _XOPEN_SOURCE LATEST_XOPEN_SOURCE
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# endif
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#endif
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#endif /* included_XOPEN_SOURCE_H */
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