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