libltdl/libltdl/lt

/* */
   1 /* lt_system.h -- system portability abstraction layer
   2 
   3    Copyright (C) 2004, 2007, 2010-2019, 2021-2022 Free Software
   4    Foundation, Inc.
   5    Written by Gary V. Vaughan, 2004
   6 
   7    NOTE: The canonical source of this file is maintained with the
   8    GNU Libtool package.  Report bugs to bug-libtool@gnu.org.
   9 
  10 GNU Libltdl is free software; you can redistribute it and/or
  11 modify it under the terms of the GNU Lesser General Public
  12 License as published by the Free Software Foundation; either
  13 version 2 of the License, or (at your option) any later version.
  14 
  15 As a special exception to the GNU Lesser General Public License,
  16 if you distribute this file as part of a program or library that
  17 is built using GNU Libtool, you may include this file under the
  18 same distribution terms that you use for the rest of that program.
  19 
  20 GNU Libltdl is distributed in the hope that it will be useful,
  21 but WITHOUT ANY WARRANTY; without even the implied warranty of
  22 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  23 GNU Lesser General Public License for more details.
  24 
  25 You should have received a copy of the GNU Lesser General Public
  26 License along with GNU Libltdl; see the file COPYING.LIB.  If not, a
  27 copy can be downloaded from  http://www.gnu.org/licenses/lgpl.html,
  28 or obtained by writing to the Free Software Foundation, Inc.,
  29 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  30 */
  31 
  32 #if !defined LT_SYSTEM_H
  33 #define LT_SYSTEM_H 1
  34 
  35 #include <stddef.h>
  36 #include <stdlib.h>
  37 #include <sys/types.h>
  38 
  39 /* Some systems do not define EXIT_*, even with STDC_HEADERS.  */
  40 #if !defined EXIT_SUCCESS
  41 # define EXIT_SUCCESS 0
  42 #endif
  43 #if !defined EXIT_FAILURE
  44 # define EXIT_FAILURE 1
  45 #endif
  46 
  47 /* Just pick a big number... */
  48 #define LT_FILENAME_MAX 2048
  49 
  50 
  51 /* Saves on those hard to debug '\0' typos....  */
  52 #define LT_EOS_CHAR     '\0'
  53 
  54 /* LTDL_BEGIN_C_DECLS should be used at the beginning of your declarations,
  55    so that C++ compilers don't mangle their names.  Use LTDL_END_C_DECLS at
  56    the end of C declarations. */
  57 #if defined __cplusplus
  58 # define LT_BEGIN_C_DECLS       extern "C" {
  59 # define LT_END_C_DECLS         }
  60 #else
  61 # define LT_BEGIN_C_DECLS       /* empty */
  62 # define LT_END_C_DECLS         /* empty */
  63 #endif
  64 
  65 /* LT_STMT_START/END are used to create macros that expand to a
  66    a single compound statement in a portable way.  */
  67 #if defined  __GNUC__ && !defined  __STRICT_ANSI__ && !defined  __cplusplus
  68 #  define LT_STMT_START        (void)(
  69 #  define LT_STMT_END          )
  70 #else
  71 #  if (defined sun || defined __sun__)
  72 #    define LT_STMT_START      if (1)
  73 #    define LT_STMT_END        else (void)0
  74 #  else
  75 #    define LT_STMT_START      do
  76 #    define LT_STMT_END        while (0)
  77 #  endif
  78 #endif
  79 
  80 /* Keep this code in sync between libtool.m4, ltmain, lt_system.h, and tests.  */
  81 #if defined _WIN32 || defined __CYGWIN__ || defined _WIN32_WCE
  82 /* DATA imports from DLLs on WIN32 can't be const, because runtime
  83    relocations are performed -- see ld's documentation on pseudo-relocs.  */
  84 # define LT_DLSYM_CONST
  85 #elif defined __osf__
  86 /* This system does not cope well with relocations in const data.  */
  87 # define LT_DLSYM_CONST
  88 #else
  89 # define LT_DLSYM_CONST const
  90 #endif
  91 
  92 /* Canonicalise Windows and Cygwin recognition macros.
  93    To match the values set by recent Cygwin compilers, make sure that if
  94    __CYGWIN__ is defined (after canonicalisation), __WINDOWS__ is NOT!  */
  95 #if defined __CYGWIN32__ && !defined __CYGWIN__
  96 # define __CYGWIN__ __CYGWIN32__
  97 #endif
  98 #if defined __CYGWIN__
  99 # if defined __WINDOWS__
 100 #   undef __WINDOWS__
 101 # endif
 102 #elif defined _WIN32
 103 # define __WINDOWS__ _WIN32
 104 #elif defined WIN32
 105 # define __WINDOWS__ WIN32
 106 #endif
 107 #if defined __CYGWIN__ && defined __WINDOWS__
 108 # undef __WINDOWS__
 109 #endif
 110 
 111 
 112 /* DLL building support on win32 hosts;  mostly to workaround their
 113    ridiculous implementation of data symbol exporting. */
 114 #if !defined LT_SCOPE
 115 #  if defined __WINDOWS__ || defined __CYGWIN__
 116 #    if defined DLL_EXPORT              /* defined by libtool (if required) */
 117 #      define LT_SCOPE  extern __declspec(dllexport)
 118 #    endif
 119 #    if defined LIBLTDL_DLL_IMPORT      /* define if linking with this dll */
 120        /* note: cygwin/mingw compilers can rely instead on auto-import */
 121 #      define LT_SCOPE  extern __declspec(dllimport)
 122 #    endif
 123 #  endif
 124 #  if !defined LT_SCOPE                 /* static linking or !__WINDOWS__ */
 125 #    define LT_SCOPE    extern
 126 #  endif
 127 #endif
 128 
 129 #if defined __WINDOWS__
 130 /* LT_DIRSEP_CHAR is accepted *in addition* to '/' as a directory
 131    separator when it is set. */
 132 # define LT_DIRSEP_CHAR         '\\'
 133 # define LT_PATHSEP_CHAR        ';'
 134 #else
 135 # define LT_PATHSEP_CHAR        ':'
 136 #endif
 137 
 138 #if defined _MSC_VER /* Visual Studio */
 139 #  define R_OK 4
 140 #endif
 141 
 142 /* fopen() mode flags for reading a text file */
 143 #undef  LT_READTEXT_MODE
 144 #if defined __WINDOWS__ || defined __CYGWIN__
 145 #  define LT_READTEXT_MODE "rt"
 146 #else
 147 #  define LT_READTEXT_MODE "r"
 148 #endif
 149 
 150 /* The extra indirection to the LT__STR and LT__CONC macros is required so
 151    that if the arguments to LT_STR() (or LT_CONC()) are themselves macros,
 152    they will be expanded before being quoted.   */
 153 #ifndef LT_STR
 154 #  define LT__STR(arg)          #arg
 155 #  define LT_STR(arg)           LT__STR(arg)
 156 #endif
 157 
 158 #ifndef LT_CONC
 159 #  define LT__CONC(a, b)        a##b
 160 #  define LT_CONC(a, b)         LT__CONC(a, b)
 161 #endif
 162 #ifndef LT_CONC3
 163 #  define LT__CONC3(a, b, c)    a##b##c
 164 #  define LT_CONC3(a, b, c)     LT__CONC3(a, b, c)
 165 #endif
 166 
 167 #endif /*!defined LT_SYSTEM_H*/
/* */
root/libltdl/libltdl/lt_system.h

INCLUDED FROM
