lt_system.h (5342B)
1 /* lt_system.h -- system portability abstraction layer 2 3 Copyright (C) 2004, 2007, 2010-2015 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 that 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 /* Keep this code in sync between libtool.m4, ltmain, lt_system.h, and tests. */ 80 #if defined _WIN32 || defined __CYGWIN__ || defined _WIN32_WCE 81 /* DATA imports from DLLs on WIN32 can't be const, because runtime 82 relocations are performed -- see ld's documentation on pseudo-relocs. */ 83 # define LT_DLSYM_CONST 84 #elif defined __osf__ 85 /* This system does not cope well with relocations in const data. */ 86 # define LT_DLSYM_CONST 87 #else 88 # define LT_DLSYM_CONST const 89 #endif 90 91 /* Canonicalise Windows and Cygwin recognition macros. 92 To match the values set by recent Cygwin compilers, make sure that if 93 __CYGWIN__ is defined (after canonicalisation), __WINDOWS__ is NOT! */ 94 #if defined __CYGWIN32__ && !defined __CYGWIN__ 95 # define __CYGWIN__ __CYGWIN32__ 96 #endif 97 #if defined __CYGWIN__ 98 # if defined __WINDOWS__ 99 # undef __WINDOWS__ 100 # endif 101 #elif defined _WIN32 102 # define __WINDOWS__ _WIN32 103 #elif defined WIN32 104 # define __WINDOWS__ WIN32 105 #endif 106 #if defined __CYGWIN__ && defined __WINDOWS__ 107 # undef __WINDOWS__ 108 #endif 109 110 111 /* DLL building support on win32 hosts; mostly to workaround their 112 ridiculous implementation of data symbol exporting. */ 113 #if !defined LT_SCOPE 114 # if defined __WINDOWS__ || defined __CYGWIN__ 115 # if defined DLL_EXPORT /* defined by libtool (if required) */ 116 # define LT_SCOPE extern __declspec(dllexport) 117 # endif 118 # if defined LIBLTDL_DLL_IMPORT /* define if linking with this dll */ 119 /* note: cygwin/mingw compilers can rely instead on auto-import */ 120 # define LT_SCOPE extern __declspec(dllimport) 121 # endif 122 # endif 123 # if !defined LT_SCOPE /* static linking or !__WINDOWS__ */ 124 # define LT_SCOPE extern 125 # endif 126 #endif 127 128 #if defined __WINDOWS__ 129 /* LT_DIRSEP_CHAR is accepted *in addition* to '/' as a directory 130 separator when it is set. */ 131 # define LT_DIRSEP_CHAR '\\' 132 # define LT_PATHSEP_CHAR ';' 133 #else 134 # define LT_PATHSEP_CHAR ':' 135 #endif 136 137 #if defined _MSC_VER /* Visual Studio */ 138 # define R_OK 4 139 #endif 140 141 /* fopen() mode flags for reading a text file */ 142 #undef LT_READTEXT_MODE 143 #if defined __WINDOWS__ || defined __CYGWIN__ 144 # define LT_READTEXT_MODE "rt" 145 #else 146 # define LT_READTEXT_MODE "r" 147 #endif 148 149 /* The extra indirection to the LT__STR and LT__CONC macros is required so 150 that if the arguments to LT_STR() (or LT_CONC()) are themselves macros, 151 they will be expanded before being quoted. */ 152 #ifndef LT_STR 153 # define LT__STR(arg) #arg 154 # define LT_STR(arg) LT__STR(arg) 155 #endif 156 157 #ifndef LT_CONC 158 # define LT__CONC(a, b) a##b 159 # define LT_CONC(a, b) LT__CONC(a, b) 160 #endif 161 #ifndef LT_CONC3 162 # define LT__CONC3(a, b, c) a##b##c 163 # define LT_CONC3(a, b, c) LT__CONC3(a, b, c) 164 #endif 165 166 #endif /*!defined LT_SYSTEM_H*/