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3431a0ab96
libltdl/argz.h, libltdl/lt__glibc.h, libltdl/lt_dlloader.h, libltdl/lt__dirent.c, libltdl/lt__dirent.h, libltdl/lt__private.h, libltdl/lt__alloc.c, libltdl/lt__alloc.h, libltdl/lt_system.h, libltdl/loader-dld_link.c, libltdl/loader-dlopen.c, libltdl/loader-dyld.c, libltdl/loader-loadlibrary.c, libltdl/loader-shl_load.c, libltdl/lt_error.h, libltdl/lt_mutex.h: Autoconf either defines to 1 or undefs the discovery macros it puts in config.h, and many (non-GNU) compilers throw a spurious warning when testing an #undef macro with #if. For consistency, while we are touching all these lines, use defined(MACRO) style throughout. Reported by Bob Friesenhahn <bfriesen@simple.dallas.tx.us>
143 lines
4.3 KiB
C
143 lines
4.3 KiB
C
/* lt_system.h -- system portability abstraction layer
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Copyright (C) 2004 Free Software Foundation, Inc.
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Originally by Gary V. Vaughan <gary@gnu.org>
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NOTE: The canonical source of this file is maintained with the
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GNU Libtool package. Report bugs to bug-libtool@gnu.org.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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As a special exception to the GNU Lesser General Public License,
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if you distribute this file as part of a program or library that
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is built using GNU libtool, you may include it under the same
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distribution terms that you use for the rest of that program.
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This library 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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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA
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*/
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#if !defined(LT_SYSTEM_H)
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#define LT_SYSTEM_H 1
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#include <stddef.h>
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#include <stdlib.h>
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#include <sys/types.h>
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/* Some systems do not define EXIT_*, even with STDC_HEADERS. */
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#if !defined(EXIT_SUCCESS)
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# define EXIT_SUCCESS 0
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#endif
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#if !defined(EXIT_FAILURE)
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# define EXIT_FAILURE 1
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#endif
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/* Just pick a big number... */
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#define LT_FILENAME_MAX 2048
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/* Saves on those hard to debug '\0' typos.... */
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#define LT_EOS_CHAR '\0'
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/* LTDL_BEGIN_C_DECLS should be used at the beginning of your declarations,
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so that C++ compilers don't mangle their names. Use LTDL_END_C_DECLS at
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the end of C declarations. */
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#if defined(__cplusplus)
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# define LT_BEGIN_C_DECLS extern "C" {
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# define LT_END_C_DECLS }
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#else
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# define LT_BEGIN_C_DECLS /* empty */
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# define LT_END_C_DECLS /* empty */
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#endif
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/* LT_STMT_START/END are used to create macros which expand to a
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a single compound statement in a portable way. */
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#if defined (__GNUC__) && !defined (__STRICT_ANSI__) && !defined (__cplusplus)
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# define LT_STMT_START (void)(
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# define LT_STMT_END )
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#else
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# if (defined (sun) || defined (__sun__))
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# define LT_STMT_START if (1)
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# define LT_STMT_END else (void)0
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# else
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# define LT_STMT_START do
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# define LT_STMT_END while (0)
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# endif
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#endif
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/* Canonicalise Windows and Cygwin recognition macros.
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To match the values set by recent Cygwin compilers, make sure that if
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__CYGWIN__ is defined (after canonicalisation), __WINDOWS__ is NOT! */
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#if defined(__CYGWIN32__) && !defined(__CYGWIN__)
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# define __CYGWIN__ __CYGWIN32__
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#endif
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#if defined(__CYGWIN__)
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# if defined(__WINDOWS__)
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# undef __WINDOWS__
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# endif
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#elif defined(_WIN32)
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# define __WINDOWS__ _WIN32
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#elif defined(WIN32)
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# define __WINDOWS__ WIN32
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#endif
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#if defined(__CYGWIN__) && defined(__WINDOWS__)
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# undef __WINDOWS__
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#endif
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/* DLL building support on win32 hosts; mostly to workaround their
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ridiculous implementation of data symbol exporting. */
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#if !defined(LT_SCOPE)
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# if defined(__WINDOWS__)
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# if defined(DLL_EXPORT) /* defined by libtool (if required) */
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# define LT_SCOPE __declspec(dllexport)
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# endif
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# if defined(LIBLTDL_DLL_IMPORT) /* define if linking with this dll */
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# define LT_SCOPE extern __declspec(dllimport)
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# endif
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# endif
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# if !defined(LT_SCOPE) /* static linking or !__WINDOWS__ */
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# define LT_SCOPE extern
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# endif
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#endif
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#if defined(__WINDOWS__)
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/* LT_DIRSEP_CHAR is accepted *in addition* to '/' as a directory
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separator when it is set. */
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# define LT_DIRSEP_CHAR '\\'
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# define LT_PATHSEP_CHAR ';'
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#else
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# define LT_PATHSEP_CHAR ':'
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#endif
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#if defined(_MSC_VER) /* Visual Studio */
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# define R_OK 4
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#endif
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/* fopen() mode flags for reading a text file */
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#undef LT_READTEXT_MODE
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#if defined(__WINDOWS__) || defined(__CYGWIN__)
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# define LT_READTEXT_MODE "rt"
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#else
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# define LT_READTEXT_MODE "r"
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#endif
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/* LT_CONC creates a new concatenated symbol for the compiler
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in a portable way. */
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#if defined(__STDC__) || defined(__cplusplus) || defined(_MSC_VER)
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# define LT_CONC(s,t) s##t
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#else
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# define LT_CONC(s,t) s/**/t
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#endif
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#endif /*!defined(LT__SYSTEM_H)*/
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