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trader/lib/xopen-source.h

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Move redefinition of _XOPEN_SOURCE into its own Autoconf macro and header 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.
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/************************************************************************
* *
* Star Traders: A Game of Interstellar Trading *
Update the copyright year to 2020
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* Copyright (C) 1990-2020, John Zaitseff *
Move redefinition of _XOPEN_SOURCE into its own Autoconf macro and header 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.
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* *
************************************************************************/
/*
Author: John Zaitseff <J.Zaitseff@zap.org.au>
$Id$
Use a hyphen instead of underscore for xopen-source.m4 and xopen-source.h
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This file, xopen-source.h, redefines _XOPEN_SOURCE to be the latest
Move redefinition of _XOPEN_SOURCE into its own Autoconf macro and header 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.
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version that is supported by the operating system's C library. It is
Correct locations of files to include ".." where needed
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used by the Autoconf macro in ../m4/xopen-source.m4.
Move redefinition of _XOPEN_SOURCE into its own Autoconf macro and header 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.
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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.
You should have received a copy of the GNU General Public License
along with this program. If not, see https://www.gnu.org/licenses/.
*/
#ifndef included_XOPEN_SOURCE_H
#define included_XOPEN_SOURCE_H
#ifdef LATEST_XOPEN_SOURCE
# if ! defined(_XOPEN_SOURCE) || _XOPEN_SOURCE < LATEST_XOPEN_SOURCE
# undef _XOPEN_SOURCE
# define _XOPEN_SOURCE LATEST_XOPEN_SOURCE
# endif
#endif
#endif /* included_XOPEN_SOURCE_H */
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