1 /* dynl-dl.c - dynamic linking for dlopen/dlsym
3 * Copyright (C) 1990-1997 Free Software Foundation, Inc.
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2, or (at your option)
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this software; see the file COPYING. If not, write to
17 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
19 * As a special exception, the Free Software Foundation gives permission
20 * for additional uses of the text contained in its release of GUILE.
22 * The exception is that, if you link the GUILE library with other files
23 * to produce an executable, this does not by itself cause the
24 * resulting executable to be covered by the GNU General Public License.
25 * Your use of that executable is in no way restricted on account of
26 * linking the GUILE library code into it.
28 * This exception does not however invalidate any other reasons why
29 * the executable file might be covered by the GNU General Public License.
31 * This exception applies only to the code released by the
32 * Free Software Foundation under the name GUILE. If you copy
33 * code from other Free Software Foundation releases into a copy of
34 * GUILE, as the General Public License permits, the exception does
35 * not apply to the code that you add in this way. To avoid misleading
36 * anyone as to the status of such modified files, you must delete
37 * this exception notice from them.
39 * If you write modifications of your own for GUILE, it is your choice
40 * whether to permit this exception to apply to your modifications.
41 * If you do not wish that, delete this exception notice.
44 /* "dynl.c" dynamically link&load object files.
46 Modified for libguile by Marius Vollmer */
50 #ifdef RTLD_LAZY /* Solaris 2. */
51 # define DLOPEN_MODE RTLD_LAZY
53 # define DLOPEN_MODE 1 /* Thats what it says in the man page. */
57 sysdep_dynl_link (fname
, subr
)
61 void *handle
= dlopen (fname
, DLOPEN_MODE
);
63 scm_misc_error (subr
, (char *)dlerror (), SCM_EOL
);
68 sysdep_dynl_unlink (handle
, subr
)
75 status
= dlclose (handle
);
78 scm_misc_error (subr
, (char *)dlerror (), SCM_EOL
);
82 sysdep_dynl_func (symb
, handle
, subr
)
91 fptr
= dlsym (handle
, symb
);
92 err
= (char *)dlerror ();
96 scm_misc_error (subr
, err
? err
: "symbol has NULL address", SCM_EOL
);