Copyright (C) 2003-2006, 2008-2011 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 Library General Public License as published
- by the Free Software Foundation; either version 2, 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 Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
- You should have received a copy of the GNU Library 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 Lesser 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. */
# define FILE_SYSTEM_PREFIX_LEN(P) 0
#endif
-/* Use the system functions, not the gnulib overrides in this file. */
-#undef malloc
+/* 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
+ Win32 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;
#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
#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 __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. */
+ 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. */
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. */