1/* foo.h -- interface to the libfoo library
2   Copyright (C) 1996-1999 Free Software Foundation, Inc.
3   Gordon Matzigkeit <gord@gnu.ai.mit.edu>, 1996
4   This file is part of GNU Libtool.
5
6This program is free software; you can redistribute it and/or modify
7it under the terms of the GNU General Public License as published by
8the Free Software Foundation; either version 2 of the License, or
9(at your option) any later version.
10
11This program is distributed in the hope that it will be useful,
12but WITHOUT ANY WARRANTY; without even the implied warranty of
13MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14GNU General Public License for more details.
15
16You should have received a copy of the GNU General Public License
17along with this program; if not, write to the Free Software
18Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301
19USA. */
20
21/* Only include this header file once. */
22#ifndef _FOO_H_
23#define _FOO_H_ 1
24
25/* At some point, cygwin will stop defining __CYGWIN32__, but b19 and
26 * earlier do not define __CYGWIN__.  This snippit allows us to check
27 * for __CYGWIN32__ reliably for both old and (probable) future releases.
28 */
29#ifdef __CYGWIN__
30#  ifndef __CYGWIN32__
31#    define __CYGWIN32__
32#  endif
33#endif
34
35/* __BEGIN_DECLS should be used at the beginning of your declarations,
36   so that C++ compilers don't mangle their names.  Use __END_DECLS at
37   the end of C declarations. */
38#undef __BEGIN_DECLS
39#undef __END_DECLS
40#ifdef __cplusplus
41# define __BEGIN_DECLS extern "C" {
42# define __END_DECLS }
43#else
44# define __BEGIN_DECLS /* empty */
45# define __END_DECLS /* empty */
46#endif
47
48/* LTDL_PARAMS is a macro used to wrap function prototypes, so that compilers
49   that don't understand ANSI C prototypes still work, and ANSI C
50   compilers can issue warnings about type mismatches. */
51#undef LTDL_PARAMS
52#if defined (__STDC__) || defined (_AIX) || (defined (__mips) && defined (_SYSTYPE_SVR4)) || defined(__CYGWIN32__) || defined(__cplusplus)
53# define LT_PARAMS(protos) protos
54# define lt_ptr_t     void*
55#else
56# define LT_PARAMS(protos) ()
57# define lt_ptr_t     char*
58#endif
59
60#ifdef __CYGWIN32__
61#  ifdef LIBFOO_DLL
62     /* need some (as yet non-existant) automake magic to tell
63      * the object whether the libfoo it will be linked with is
64      * a dll or not, ie whether LIBFOO_DLL is defined or not.
65      */
66#    ifdef _LIBFOO_COMPILATION_
67#      define EXTERN __declspec(dllexport)
68#    else
69#      define EXTERN extern __declspec(dllimport)
70#    endif
71#  else
72#    define EXTERN extern
73#  endif
74#else
75#  define EXTERN extern
76#endif
77
78/* Silly constants that the functions return. */
79#define HELLO_RET 0xe110
80#define FOO_RET 0xf00
81
82
83/* Declarations.  Note the wonderful use of the above macros. */
84__BEGIN_DECLS
85int foo LT_PARAMS((void));
86int hello LT_PARAMS((void));
87EXTERN int nothing;
88__END_DECLS
89
90#endif /* !_FOO_H_ */
91