* configure.in: Rewrite to use autoconf.

* configure.host: New file.
	* configure.tgt: New file.
	* aclocal.m4: New file.
	* configure: New file, built by autoconf.
	* acconfig.h: New file.
	* config.h.in: New file, built by autoheader.
	* sysdep.h: New file.
	* ld.h: Incorporate old contents of config.h.
	* config.h: Remove.
	* Makefile.in: Various changes for new configure script.  Also:
	(CC_FOR_BUILD): Remove.
	(ldmain.o): Don't bother to ensure that EMUL is non-empty.
	(dep.sed): Use @SRCDIR@, not @srcdir@.
	* dep-in.sed: Use @SRCDIR@, not @srcdir@.
	* genscripts.sh: Create ldscripts if it does not exist.
	* ldemul.c, lexsup.c, mpw-emipsidt.c: Don't include "config.h".
	* mpw-esh.c, emultemp/*.em: Likewise.
	* ldmain.c: Likewise.  Include <ctype.h>.  Don't try to set
	HAVE_SBRK here.
	* config/*.mt, config/*.mh: Remove.

ld/sysdep.h

@@ -0,0 +1,56 @@
+/* sysdep.h -- handle host dependencies for the GNU linker
+   Copyright (C) 1995 Free Software Foundation, Inc.
+
+   This file is part of GLD, the Gnu Linker.
+
+   GLD 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 2, or (at your option)
+   any later version.
+
+   GLD 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 General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with GLD; see the file COPYING.  If not, write to the Free
+   Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+   02111-1307, USA.  */
+
+#ifndef LD_SYSDEP_H
+#define LD_SYSDEP_H
+
+#include "config.h"
+
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#ifdef HAVE_STRING_H
+#include <string.h>
+#else
+#ifdef HAVE_STRINGS_H
+#include <strings.h>
+#else
+extern char *strchr ();
+extern char *strrchr ();
+extern char *strstr ();
+#endif
+#endif
+
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+#ifdef USE_BINARY_FOPEN
+#include "fopen-bin.h"
+#else
+#include "fopen-same.h"
+#endif
+
+#endif /* ! defined (LD_SYSDEP_H) */