/* Provide relocatable packages.
- Copyright (C) 2003-2006, 2008-2010 Free Software Foundation, Inc.
+ Copyright (C) 2003-2006, 2008-2013 Free Software Foundation, Inc.
Written by Bruno Haible <bruno@clisp.org>, 2003.
- This program is free software; you can redistribute it and/or modify it
- under the terms of the GNU General Public License as published
- by the Free Software Foundation; either version 3, or (at your option)
- any later version.
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
This program 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
- Library General Public License for more details.
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
- You should have received a copy of the GNU General Public
- License along with this program; if not, write to the Free Software
- Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
- USA. */
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
/* Tell glibc's <stdio.h> to provide a prototype for getline().
# define _GNU_SOURCE 1
#endif
+#define _GL_USE_STDLIB_ALLOC 1
#include <config.h>
/* Specification. */
# include "xalloc.h"
#endif
-#if defined _WIN32 || defined __WIN32__ || defined __CYGWIN__
+#if (defined _WIN32 || defined __WIN32__) && !defined __CYGWIN__
# define WIN32_LEAN_AND_MEAN
# include <windows.h>
#endif
ISSLASH(C) tests whether C is a directory separator character.
IS_PATH_WITH_DIR(P) tests whether P contains a directory specification.
*/
-#if defined _WIN32 || defined __WIN32__ || defined __CYGWIN__ || defined __EMX__ || defined __DJGPP__
- /* Win32, Cygwin, OS/2, DOS */
+#if ((defined _WIN32 || defined __WIN32__) && !defined __CYGWIN__) || defined __EMX__ || defined __DJGPP__
+ /* Native Windows, OS/2, DOS */
# define ISSLASH(C) ((C) == '/' || (C) == '\\')
# define HAS_DEVICE(P) \
((((P)[0] >= 'A' && (P)[0] <= 'Z') || ((P)[0] >= 'a' && (P)[0] <= 'z')) \
# define FILE_SYSTEM_PREFIX_LEN(P) 0
#endif
+/* Whether to enable the more costly support for relocatable libraries.
+ It allows libraries to be have been installed with a different original
+ prefix than the program. But it is quite costly, especially on Cygwin
+ platforms, see below. Therefore we enable it by default only on native
+ Windows platforms. */
+#ifndef ENABLE_COSTLY_RELOCATABLE
+# if (defined _WIN32 || defined __WIN32__) && !defined __CYGWIN__
+# define ENABLE_COSTLY_RELOCATABLE 1
+# else
+# define ENABLE_COSTLY_RELOCATABLE 0
+# endif
+#endif
+
/* Original installation prefix. */
static char *orig_prefix;
static size_t orig_prefix_len;
#endif
}
-#if !defined IN_LIBRARY || (defined PIC && defined INSTALLDIR)
+#if !defined IN_LIBRARY || (defined PIC && defined INSTALLDIR && ENABLE_COSTLY_RELOCATABLE)
/* Convenience function:
Computes the current installation prefix, based on the original
often case-insensitive. It's better to accept the comparison
if the difference is only in case, rather than to fail. */
#if defined _WIN32 || defined __WIN32__ || defined __CYGWIN__ || defined __EMX__ || defined __DJGPP__
- /* Win32, Cygwin, OS/2, DOS - case insignificant file system */
+ /* Native Windows, Cygwin, OS/2, DOS - case insignificant file system */
if ((*rpi >= 'a' && *rpi <= 'z' ? *rpi - 'a' + 'A' : *rpi)
!= (*cpi >= 'a' && *cpi <= 'z' ? *cpi - 'a' + 'A' : *cpi))
break;
#endif /* !IN_LIBRARY || PIC */
-#if defined PIC && defined INSTALLDIR
+#if defined PIC && defined INSTALLDIR && ENABLE_COSTLY_RELOCATABLE
/* Full pathname of shared library, or NULL. */
static char *shared_library_fullname;
-#if defined _WIN32 || defined __WIN32__ || defined __CYGWIN__
+#if (defined _WIN32 || defined __WIN32__) && !defined __CYGWIN__
+/* Native Windows only.
+ On Cygwin, it is better to use the Cygwin provided /proc interface, than
+ to use native Windows API and cygwin_conv_to_posix_path, because it
+ supports longer file names
+ (see <http://cygwin.com/ml/cygwin/2011-01/msg00410.html>). */
/* Determine the full pathname of the shared library when it is loaded. */
/* Shouldn't happen. */
return FALSE;
- {
-#if defined __CYGWIN__
- /* On Cygwin, we need to convert paths coming from Win32 system calls
- to the Unix-like slashified notation. */
- static char location_as_posix_path[2 * MAX_PATH];
- /* There's no error return defined for cygwin_conv_to_posix_path.
- See cygwin-api/func-cygwin-conv-to-posix-path.html.
- Does it overflow the buffer of expected size MAX_PATH or does it
- truncate the path? I don't know. Let's catch both. */
- cygwin_conv_to_posix_path (location, location_as_posix_path);
- location_as_posix_path[MAX_PATH - 1] = '\0';
- if (strlen (location_as_posix_path) >= MAX_PATH - 1)
- /* A sign of buffer overflow or path truncation. */
- return FALSE;
- shared_library_fullname = strdup (location_as_posix_path);
-#else
- shared_library_fullname = strdup (location);
-#endif
- }
+ shared_library_fullname = strdup (location);
}
return TRUE;
}
-#else /* Unix except Cygwin */
+#else /* Unix */
static void
find_shared_library_fullname ()
{
-#if defined __linux__ && __GLIBC__ >= 2
- /* Linux has /proc/self/maps. glibc 2 has the getline() function. */
+#if (defined __linux__ && (__GLIBC__ >= 2 || defined __UCLIBC__)) || defined __CYGWIN__
+ /* Linux has /proc/self/maps. glibc 2 and uClibc have the getline()
+ function.
+ Cygwin >= 1.5 has /proc/self/maps and the getline() function too.
+ But it is costly: ca. 0.3 ms on Linux, 3 ms on Cygwin 1.5, and 5 ms on
+ Cygwin 1.7. */
FILE *fp;
/* Open the current process' maps file. It describes one VMA per line. */
#endif
}
-#endif /* (WIN32 or Cygwin) / (Unix except Cygwin) */
+#endif /* Native Windows / Unix */
/* Return the full pathname of the current shared library.
Return NULL if unknown.
- Guaranteed to work only on Linux, Cygwin and Woe32. */
+ Guaranteed to work only on Linux, Cygwin, and native Windows. */
static char *
get_shared_library_fullname ()
{
-#if !(defined _WIN32 || defined __WIN32__ || defined __CYGWIN__)
+#if !((defined _WIN32 || defined __WIN32__) && !defined __CYGWIN__)
static bool tried_find_shared_library_fullname;
if (!tried_find_shared_library_fullname)
{
const char *
relocate (const char *pathname)
{
-#if defined PIC && defined INSTALLDIR
+#if defined PIC && defined INSTALLDIR && ENABLE_COSTLY_RELOCATABLE
static int initialized;
/* Initialization code for a shared library. */
projects / platform / upstream / gettext.git / blobdiff