mirror of
https://github.com/brl/mutter.git
synced 2024-11-26 10:00:45 -05:00
d2c41502a4
This commit pushes --disable-glib to the extreme of embedding the par of glib cogl depends on in tree to be able to generate a DSO that does not depend on an external glib. To do so, it: - keeps a lot of glib's configure.ac in as-glibconfig.m4 - pulls the code cogl depends on and the necessary dependencies Reviewed-by: Robert Bragg <robert@linux.intel.com>
169 lines
4.3 KiB
C
169 lines
4.3 KiB
C
/* GMODULE - GLIB wrapper code for dynamic module loading
|
|
* Copyright (C) 1998, 2000 Tim Janik
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the
|
|
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
* Boston, MA 02111-1307, USA.
|
|
*/
|
|
|
|
/*
|
|
* Modified by the GLib Team and others 1997-2000. See the AUTHORS
|
|
* file for a list of people on the GLib Team. See the ChangeLog
|
|
* files for a list of changes. These files are distributed with
|
|
* GLib at ftp://ftp.gtk.org/pub/gtk/.
|
|
*/
|
|
|
|
/*
|
|
* MT safe
|
|
*/
|
|
#include "config.h"
|
|
|
|
#include <dlfcn.h>
|
|
|
|
/* Perl includes <nlist.h> and <link.h> instead of <dlfcn.h> on some systmes? */
|
|
|
|
|
|
/* dlerror() is not implemented on all systems
|
|
*/
|
|
#ifndef G_MODULE_HAVE_DLERROR
|
|
# ifdef __NetBSD__
|
|
# define dlerror() g_strerror (errno)
|
|
# else /* !__NetBSD__ */
|
|
/* could we rely on errno's state here? */
|
|
# define dlerror() "unknown dl-error"
|
|
# endif /* !__NetBSD__ */
|
|
#endif /* G_MODULE_HAVE_DLERROR */
|
|
|
|
/* some flags are missing on some systems, so we provide
|
|
* harmless defaults.
|
|
* The Perl sources say, RTLD_LAZY needs to be defined as (1),
|
|
* at least for Solaris 1.
|
|
*
|
|
* Mandatory:
|
|
* RTLD_LAZY - resolve undefined symbols as code from the dynamic library
|
|
* is executed.
|
|
* RTLD_NOW - resolve all undefined symbols before dlopen returns, and fail
|
|
* if this cannot be done.
|
|
* Optionally:
|
|
* RTLD_GLOBAL - the external symbols defined in the library will be made
|
|
* available to subsequently loaded libraries.
|
|
*/
|
|
#ifndef RTLD_LAZY
|
|
#define RTLD_LAZY 1
|
|
#endif /* RTLD_LAZY */
|
|
#ifndef RTLD_NOW
|
|
#define RTLD_NOW 0
|
|
#endif /* RTLD_NOW */
|
|
/* some systems (OSF1 V5.0) have broken RTLD_GLOBAL linkage */
|
|
#ifdef G_MODULE_BROKEN_RTLD_GLOBAL
|
|
#undef RTLD_GLOBAL
|
|
#endif /* G_MODULE_BROKEN_RTLD_GLOBAL */
|
|
#ifndef RTLD_GLOBAL
|
|
#define RTLD_GLOBAL 0
|
|
#endif /* RTLD_GLOBAL */
|
|
|
|
|
|
/* --- functions --- */
|
|
static gchar*
|
|
fetch_dlerror (gboolean replace_null)
|
|
{
|
|
gchar *msg = dlerror ();
|
|
|
|
/* make sure we always return an error message != NULL, if
|
|
* expected to do so. */
|
|
|
|
if (!msg && replace_null)
|
|
return "unknown dl-error";
|
|
|
|
return msg;
|
|
}
|
|
|
|
static gpointer
|
|
_g_module_open (const gchar *file_name,
|
|
gboolean bind_lazy,
|
|
gboolean bind_local)
|
|
{
|
|
gpointer handle;
|
|
|
|
handle = dlopen (file_name,
|
|
(bind_local ? 0 : RTLD_GLOBAL) | (bind_lazy ? RTLD_LAZY : RTLD_NOW));
|
|
if (!handle)
|
|
g_module_set_error (fetch_dlerror (TRUE));
|
|
|
|
return handle;
|
|
}
|
|
|
|
static gpointer
|
|
_g_module_self (void)
|
|
{
|
|
gpointer handle;
|
|
|
|
/* to query symbols from the program itself, special link options
|
|
* are required on some systems.
|
|
*/
|
|
|
|
handle = dlopen (NULL, RTLD_GLOBAL | RTLD_LAZY);
|
|
if (!handle)
|
|
g_module_set_error (fetch_dlerror (TRUE));
|
|
|
|
return handle;
|
|
}
|
|
|
|
static void
|
|
_g_module_close (gpointer handle,
|
|
gboolean is_unref)
|
|
{
|
|
/* are there any systems out there that have dlopen()/dlclose()
|
|
* without a reference count implementation?
|
|
*/
|
|
is_unref |= 1;
|
|
|
|
if (is_unref)
|
|
{
|
|
if (dlclose (handle) != 0)
|
|
g_module_set_error (fetch_dlerror (TRUE));
|
|
}
|
|
}
|
|
|
|
static gpointer
|
|
_g_module_symbol (gpointer handle,
|
|
const gchar *symbol_name)
|
|
{
|
|
gpointer p;
|
|
gchar *msg;
|
|
|
|
fetch_dlerror (FALSE);
|
|
p = dlsym (handle, symbol_name);
|
|
msg = fetch_dlerror (FALSE);
|
|
if (msg)
|
|
g_module_set_error (msg);
|
|
|
|
return p;
|
|
}
|
|
|
|
static gchar*
|
|
_g_module_build_path (const gchar *directory,
|
|
const gchar *module_name)
|
|
{
|
|
if (directory && *directory) {
|
|
if (strncmp (module_name, "lib", 3) == 0)
|
|
return g_strconcat (directory, "/", module_name, NULL);
|
|
else
|
|
return g_strconcat (directory, "/lib", module_name, "." G_MODULE_SUFFIX, NULL);
|
|
} else if (strncmp (module_name, "lib", 3) == 0)
|
|
return g_strdup (module_name);
|
|
else
|
|
return g_strconcat ("lib", module_name, "." G_MODULE_SUFFIX, NULL);
|
|
}
|