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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)*/ |