Prepare for radical source tree reorganization. zack/build-layout-experiment

All top-level files and directories are moved into a temporary storage
directory, REORG.TODO, except for files that will certainly still
exist in their current form at top level when we're done (COPYING,
COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which
are moved to the new directory OldChangeLogs, instead), and the
generated file INSTALL (which is just deleted; in the new order, there
will be no generated files checked into version control).

1 files changed, 52 insertions, 0 deletions

diff --git a/REORG.TODO/include/gnu-versions.h b/REORG.TODO/include/gnu-versions.h
new file mode 100644
index 0000000000..40f2bfcc79
--- /dev/null
+++ b/REORG.TODO/include/gnu-versions.h
@@ -0,0 +1,52 @@
+/* Header with interface version macros for library pieces copied elsewhere.
+   Copyright (C) 1995-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C 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 2.1 of the License, or (at your option) any later version.
+
+   The GNU C 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 the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _GNU_VERSIONS_H
+#define	_GNU_VERSIONS_H	1
+
+/* This file exists to define these few macros.  Each specifies a version
+   number associated with the library interface of a piece of the C library
+   which is also distributed with other GNU packages.  These pieces are
+   both part of the GNU C library and also distributed with other GNU
+   packages so those packages may use their facilities on systems lacking
+   the GNU C library.  The source files for each piece surround all their
+   code with `#ifndef ELIDE_CODE' after defining it with this:
+
+   #define OBSTACK_INTERFACE_VERSION 1
+   #if !defined (_LIBC) && defined (__GNU_LIBRARY__) && __GNU_LIBRARY__ > 1
+   #include <gnu-versions.h>
+   #if _GNU_OBSTACK_INTERFACE_VERSION == OBSTACK_INTERFACE_VERSION
+   #define ELIDE_CODE
+   #endif
+   #endif
+
+   This allows those one to avoid compiling those files when part of a GNU
+   package not libc, on a system using a GNU C library that supports the
+   same interface.
+
+   Please preserve the format of the comments after each macro.  And
+   remember, if any of these versions change, the libc.so major version
+   number must change too (so avoid it)!  */
+
+#define _GNU_OBSTACK_INTERFACE_VERSION	1 /* vs malloc/obstack.c */
+#define _GNU_REGEX_INTERFACE_VERSION	1 /* vs posix/regex.c */
+#define _GNU_GLOB_INTERFACE_VERSION	1 /* vs posix/glob.c */
+#define _GNU_GETOPT_INTERFACE_VERSION	2 /* vs posix/getopt.c and
+					     posix/getopt1.c */
+
+#endif	/* gnu-versions.h */