1 /* lt_system.h -- system portability abstraction layer
3 Copyright (C) 2004, 2007, 2010-2015 Free Software Foundation, Inc.
4 Written by Gary V. Vaughan, 2004
6 NOTE: The canonical source of this file is maintained with the
7 GNU Libtool package. Report bugs to bug-libtool@gnu.org.
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.
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.
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.
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.
31 #if !defined LT_SYSTEM_H
36 #include <sys/types.h>
38 /* Some systems do not define EXIT_*, even with STDC_HEADERS. */
39 #if !defined EXIT_SUCCESS
40 # define EXIT_SUCCESS 0
42 #if !defined EXIT_FAILURE
43 # define EXIT_FAILURE 1
46 /* Just pick a big number... */
47 #define LT_FILENAME_MAX 2048
50 /* Saves on those hard to debug '\0' typos.... */
51 #define LT_EOS_CHAR '\0'
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 }
60 # define LT_BEGIN_C_DECLS /* empty */
61 # define LT_END_C_DECLS /* empty */
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 )
70 # if (defined sun || defined __sun__)
71 # define LT_STMT_START if (1)
72 # define LT_STMT_END else (void)0
74 # define LT_STMT_START do
75 # define LT_STMT_END while (0)
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
85 /* This system does not cope well with relocations in const data. */
86 # define LT_DLSYM_CONST
88 # define LT_DLSYM_CONST const
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__
97 #if defined __CYGWIN__
98 # if defined __WINDOWS__
102 # define __WINDOWS__ _WIN32
104 # define __WINDOWS__ WIN32
106 #if defined __CYGWIN__ && defined __WINDOWS__
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)
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)
123 # if !defined LT_SCOPE /* static linking or !__WINDOWS__ */
124 # define LT_SCOPE extern
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 ';'
134 # define LT_PATHSEP_CHAR ':'
137 #if defined _MSC_VER /* Visual Studio */
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"
146 # define LT_READTEXT_MODE "r"
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. */
153 # define LT__STR(arg) #arg
154 # define LT_STR(arg) LT__STR(arg)
158 # define LT__CONC(a, b) a##b
159 # define LT_CONC(a, b) LT__CONC(a, b)
162 # define LT__CONC3(a, b, c) a##b##c
163 # define LT_CONC3(a, b, c) LT__CONC3(a, b, c)
166 #endif /*!defined LT_SYSTEM_H*/