Initial checkin

extern/hunspell/intl/relocatable.h

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+/* Provide relocatable packages.
+   Copyright (C) 2003, 2005 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 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.
+
+   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.  */
+
+#ifndef _RELOCATABLE_H
+#define _RELOCATABLE_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/* This can be enabled through the configure --enable-relocatable option.  */
+#if ENABLE_RELOCATABLE
+
+/* When building a DLL, we must export some functions.  Note that because
+   this is a private .h file, we don't need to use __declspec(dllimport)
+   in any case.  */
+#if HAVE_VISIBILITY && BUILDING_DLL
+# define RELOCATABLE_DLL_EXPORTED __attribute__((__visibility__("default")))
+#elif defined _MSC_VER && BUILDING_DLL
+# define RELOCATABLE_DLL_EXPORTED __declspec(dllexport)
+#else
+# define RELOCATABLE_DLL_EXPORTED
+#endif
+
+/* Sets the original and the current installation prefix of the package.
+   Relocation simply replaces a pathname starting with the original prefix
+   by the corresponding pathname with the current prefix instead.  Both
+   prefixes should be directory names without trailing slash (i.e. use ""
+   instead of "/").  */
+extern RELOCATABLE_DLL_EXPORTED void
+       set_relocation_prefix (const char *orig_prefix,
+			      const char *curr_prefix);
+
+/* Returns the pathname, relocated according to the current installation
+   directory.  */
+extern const char * relocate (const char *pathname);
+
+/* Memory management: relocate() leaks memory, because it has to construct
+   a fresh pathname.  If this is a problem because your program calls
+   relocate() frequently, think about caching the result.  */
+
+/* Convenience function:
+   Computes the current installation prefix, based on the original
+   installation prefix, the original installation directory of a particular
+   file, and the current pathname of this file.  Returns NULL upon failure.  */
+extern const char * compute_curr_prefix (const char *orig_installprefix,
+					 const char *orig_installdir,
+					 const char *curr_pathname);
+
+#else
+
+/* By default, we use the hardwired pathnames.  */
+#define relocate(pathname) (pathname)
+
+#endif
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _RELOCATABLE_H */