Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the

non-i386, non-unix, and generatable files have been trimmed, but can easily
be added in later if needed.

gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's
handy to have both available for reference for such little cost.

The freebsd-specific changes will then be committed, and once the dust has
settled, the bmakefiles will be committed to use this code.

1 files changed, 3409 insertions, 0 deletions

diff --git a/contrib/gcc/collect2.c b/contrib/gcc/collect2.c
new file mode 100644
index 0000000..a74a7f0
--- /dev/null
+++ b/contrib/gcc/collect2.c
@@ -0,0 +1,3409 @@
+/* Collect static initialization info into data structures
+   that can be traversed by C++ initialization and finalization
+   routines.
+
+   Copyright (C) 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
+   Contributed by Chris Smith (csmith@convex.com).
+   Heavily modified by Michael Meissner (meissner@cygnus.com),
+   Per Bothner (bothner@cygnus.com), and John Gilmore (gnu@cygnus.com).
+
+This file is part of GNU CC.
+
+GNU CC 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.
+
+GNU CC 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 GNU CC; see the file COPYING.  If not, write to
+the Free Software Foundation, 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
+
+
+/* Build tables of static constructors and destructors and run ld. */
+
+#include "config.h"
+#include <sys/types.h>
+#include <stdio.h>
+#include <ctype.h>
+#include <errno.h>
+#include <signal.h>
+#include <sys/file.h>
+#include <sys/stat.h>
+#ifdef NO_WAIT_H
+#include <sys/wait.h>
+#endif
+
+#define COLLECT
+
+#include "demangle.h"
+#include "obstack.h"
+
+#ifndef errno
+extern int errno;
+#endif
+
+#ifndef HAVE_STRERROR
+#if defined(bsd4_4) 
+extern const char *const sys_errlist[];
+#else
+extern char *sys_errlist[];
+#endif
+extern int sys_nerr;
+#else
+char *strerror();
+#endif
+
+/* Obstack allocation and deallocation routines.  */
+#define obstack_chunk_alloc xmalloc
+#define obstack_chunk_free free
+
+#if !defined (__STDC__) && !defined (const)
+#define const
+#endif
+
+#ifdef USG
+#define vfork fork
+#endif
+
+/* Add prototype support.  */
+#ifndef PROTO
+#if defined (USE_PROTOTYPES) ? USE_PROTOTYPES : defined (__STDC__)
+#define PROTO(ARGS) ARGS
+#else
+#define PROTO(ARGS) ()
+#endif
+#endif
+
+#ifndef R_OK
+#define R_OK 4
+#define W_OK 2
+#define X_OK 1
+#endif
+
+#ifndef WIFSIGNALED
+#define WIFSIGNALED(S) (((S) & 0xff) != 0 && ((S) & 0xff) != 0x7f)
+#endif
+#ifndef WTERMSIG
+#define WTERMSIG(S) ((S) & 0x7f)
+#endif
+#ifndef WIFEXITED
+#define WIFEXITED(S) (((S) & 0xff) == 0)
+#endif
+#ifndef WEXITSTATUS
+#define WEXITSTATUS(S) (((S) & 0xff00) >> 8)
+#endif
+
+/* On MSDOS, write temp files in current dir
+   because there's no place else we can expect to use.  */
+#ifdef __MSDOS__
+#ifndef P_tmpdir
+#define P_tmpdir "./"
+#endif
+#endif
+
+/* On certain systems, we have code that works by scanning the object file
+   directly.  But this code uses system-specific header files and library
+   functions, so turn it off in a cross-compiler.  Likewise, the names of
+   the utilities aren't correct for a cross-compiler; we have to hope that
+   cross-versions are in the proper directories.  */
+
+#ifdef CROSS_COMPILE
+#undef SUNOS4_SHARED_LIBRARIES
+#undef OBJECT_FORMAT_COFF
+#undef OBJECT_FORMAT_ROSE
+#undef MD_EXEC_PREFIX
+#undef REAL_LD_FILE_NAME
+#undef REAL_NM_FILE_NAME
+#undef REAL_STRIP_FILE_NAME
+#endif
+
+/* If we can't use a special method, use the ordinary one:
+   run nm to find what symbols are present.
+   In a cross-compiler, this means you need a cross nm,
+   but that isn't quite as unpleasant as special headers.  */
+
+#if !defined (OBJECT_FORMAT_COFF) && !defined (OBJECT_FORMAT_ROSE)
+#define OBJECT_FORMAT_NONE
+#endif
+
+#ifdef OBJECT_FORMAT_COFF
+
+#include <a.out.h>
+#include <ar.h>
+
+#ifdef UMAX
+#include <sgs.h>
+#endif
+
+/* Many versions of ldfcn.h define these.  */
+#ifdef FREAD
+#undef FREAD
+#undef FWRITE
+#endif
+
+#include <ldfcn.h>
+
+/* Some systems have an ISCOFF macro, but others do not.  In some cases
+   the macro may be wrong.  MY_ISCOFF is defined in tm.h files for machines
+   that either do not have an ISCOFF macro in /usr/include or for those 
+   where it is wrong.  */
+
+#ifndef MY_ISCOFF
+#define MY_ISCOFF(X) ISCOFF (X)
+#endif
+
+#ifdef XCOFF_DEBUGGING_INFO
+#define XCOFF_SCAN_LIBS
+#endif
+
+#endif /* OBJECT_FORMAT_COFF */
+
+#ifdef OBJECT_FORMAT_ROSE
+
+#ifdef _OSF_SOURCE
+#define USE_MMAP
+#endif
+
+#ifdef USE_MMAP
+#include <sys/mman.h>
+#endif
+
+#include <unistd.h>
+#include <mach_o_format.h>
+#include <mach_o_header.h>
+#include <mach_o_vals.h>
+#include <mach_o_types.h>
+
+#endif /* OBJECT_FORMAT_ROSE */
+
+#ifdef OBJECT_FORMAT_NONE
+
+/* Default flags to pass to nm.  */
+#ifndef NM_FLAGS
+#define NM_FLAGS "-p"
+#endif
+
+#endif /* OBJECT_FORMAT_NONE */
+
+/* Some systems use __main in a way incompatible with its use in gcc, in these
+   cases use the macros NAME__MAIN to give a quoted symbol and SYMBOL__MAIN to
+   give the same symbol without quotes for an alternative entry point.  You
+   must define both, or neither.  */
+#ifndef NAME__MAIN
+#define NAME__MAIN "__main"
+#define SYMBOL__MAIN __main
+#endif
+
+#if defined (LDD_SUFFIX) || SUNOS4_SHARED_LIBRARIES || defined(XCOFF_SCAN_LIBS)
+#define SCAN_LIBRARIES
+#endif
+
+#ifdef USE_COLLECT2
+int do_collecting = 1;
+#else
+int do_collecting = 0;
+#endif
+
+/* Linked lists of constructor and destructor names. */
+
+struct id 
+{
+  struct id *next;
+  int sequence;
+  char name[1];
+};
+
+struct head
+{
+  struct id *first;
+  struct id *last;
+  int number;
+};
+
+/* Enumeration giving which pass this is for scanning the program file.  */
+
+enum pass {
+  PASS_FIRST,				/* without constructors */
+  PASS_OBJ,				/* individual objects */
+  PASS_LIB,			        /* looking for shared libraries */
+  PASS_SECOND				/* with constructors linked in */
+};
+
+#ifndef NO_SYS_SIGLIST
+#ifndef DONT_DECLARE_SYS_SIGLIST
+extern char *sys_siglist[];
+#endif
+#endif
+extern char *version_string;
+
+int vflag;				/* true if -v */
+static int rflag;			/* true if -r */
+static int strip_flag;			/* true if -s */
+
+int debug;				/* true if -debug */
+
+static int shared_obj;		        /* true if -shared */
+
+static int   temp_filename_length;	/* Length of temp_filename */
+static char *temp_filename;		/* Base of temp filenames */
+static char *c_file;			/* <xxx>.c for constructor/destructor list. */
+static char *o_file;			/* <xxx>.o for constructor/destructor list. */
+static char *export_file;	        /* <xxx>.x for AIX export list. */
+static int  auto_export = 1;	        /* true if exporting everything. */
+char *ldout;				/* File for ld errors.  */
+static char *output_file;		/* Output file for ld.  */
+static char *nm_file_name;		/* pathname of nm */
+static char *ldd_file_name;		/* pathname of ldd (or equivalent) */
+static char *strip_file_name;		/* pathname of strip */
+char *c_file_name;		        /* pathname of gcc */
+static char *initname, *fininame;	/* names of init and fini funcs */
+
+static struct head constructors;	/* list of constructors found */
+static struct head destructors;		/* list of destructors found */
+static struct head exports;		/* list of exported symbols */
+
+struct obstack temporary_obstack;
+struct obstack permanent_obstack;
+char * temporary_firstobj;
+
+/* Defined in the automatically-generated underscore.c.  */
+extern int prepends_underscore;
+
+extern char *getenv ();
+extern char *mktemp ();
+extern FILE *fdopen ();
+
+/* Structure to hold all the directories in which to search for files to
+   execute.  */
+
+struct prefix_list
+{
+  char *prefix;               /* String to prepend to the path. */
+  struct prefix_list *next;   /* Next in linked list. */
+};
+
+struct path_prefix
+{
+  struct prefix_list *plist;  /* List of prefixes to try */
+  int max_len;                /* Max length of a prefix in PLIST */
+  char *name;                 /* Name of this list (used in config stuff) */
+};
+
+void collect_exit		PROTO((int));
+void collect_execute		PROTO((char *, char **, char *));
+void dump_file			PROTO((char *));
+static void handler		PROTO((int));
+static int is_ctor_dtor		PROTO((char *));
+static void choose_temp_base	PROTO((void));
+static int is_in_prefix_list	PROTO((struct path_prefix *, char *, int));
+static char *find_a_file	PROTO((struct path_prefix *, char *));
+static void add_prefix		PROTO((struct path_prefix *, char *));
+static void prefix_from_env	PROTO((char *, struct path_prefix *));
+static void prefix_from_string	PROTO((char *, struct path_prefix *));
+static void do_wait		PROTO((char *));
+static void fork_execute	PROTO((char *, char **));
+static void maybe_unlink	PROTO((char *));
+static void add_to_list		PROTO((struct head *, char *));
+static void write_list		PROTO((FILE *, char *, struct id *));
+static void write_list_with_asm PROTO((FILE *, char *, struct id *));
+static void write_c_file	PROTO((FILE *, char *));
+static void write_export_file	PROTO((FILE *));
+static void scan_prog_file	PROTO((char *, enum pass));
+static void scan_libraries	PROTO((char *));
+
+char *xcalloc ();
+char *xmalloc ();
+
+extern char *index ();
+extern char *rindex ();
+extern void free ();
+
+#ifdef NO_DUP2
+int
+dup2 (oldfd, newfd)
+     int oldfd;
+     int newfd;
+{
+  int fdtmp[256];
+  int fdx = 0;
+  int fd;
+ 
+  if (oldfd == newfd)
+    return oldfd;
+  close (newfd);
+  while ((fd = dup (oldfd)) != newfd && fd >= 0) /* good enough for low fd's */
+    fdtmp[fdx++] = fd;
+  while (fdx > 0)
+    close (fdtmp[--fdx]);
+
+  return fd;
+}
+#endif
+
+char *
+my_strerror (e)
+     int e;
+{
+
+#ifdef HAVE_STRERROR
+  return strerror (e);
+
+#else
+
+  static char buffer[30];
+  if (!e)
+    return "";
+
+  if (e > 0 && e < sys_nerr)
+    return sys_errlist[e];
+
+  sprintf (buffer, "Unknown error %d", e);
+  return buffer;
+#endif
+}
+
+/* Delete tempfiles and exit function.  */
+
+void
+collect_exit (status)
+     int status;
+{
+  if (c_file != 0 && c_file[0])
+    maybe_unlink (c_file);
+
+  if (o_file != 0 && o_file[0])
+    maybe_unlink (o_file);
+
+  if (export_file != 0 && export_file[0])
+    maybe_unlink (export_file);
+
+  if (ldout != 0 && ldout[0])
+    {
+      dump_file (ldout);
+      maybe_unlink (ldout);
+    }
+
+  if (status != 0 && output_file != 0 && output_file[0])
+    maybe_unlink (output_file);
+
+  exit (status);
+}
+
+
+/* Die when sys call fails. */
+
+void
+fatal_perror (string, arg1, arg2, arg3)
+     char *string, *arg1, *arg2, *arg3;
+{
+  int e = errno;
+
+  fprintf (stderr, "collect2: ");
+  fprintf (stderr, string, arg1, arg2, arg3);
+  fprintf (stderr, ": %s\n", my_strerror (e));
+  collect_exit (1);
+}
+
+/* Just die. */
+
+void
+fatal (string, arg1, arg2, arg3)
+     char *string, *arg1, *arg2, *arg3;
+{
+  fprintf (stderr, "collect2: ");
+  fprintf (stderr, string, arg1, arg2, arg3);
+  fprintf (stderr, "\n");
+  collect_exit (1);
+}
+
+/* Write error message.  */
+
+void
+error (string, arg1, arg2, arg3, arg4)
+     char *string, *arg1, *arg2, *arg3, *arg4;
+{
+  fprintf (stderr, "collect2: ");
+  fprintf (stderr, string, arg1, arg2, arg3, arg4);
+  fprintf (stderr, "\n");
+}
+
+/* In case obstack is linked in, and abort is defined to fancy_abort,
+   provide a default entry.  */
+
+void
+fancy_abort ()
+{
+  fatal ("internal error");
+}
+
+
+static void
+handler (signo)
+     int signo;
+{
+  if (c_file != 0 && c_file[0])
+    maybe_unlink (c_file);
+
+  if (o_file != 0 && o_file[0])
+    maybe_unlink (o_file);
+
+  if (ldout != 0 && ldout[0])
+    maybe_unlink (ldout);
+
+  signal (signo, SIG_DFL);
+  kill (getpid (), signo);
+}
+
+
+char *
+xcalloc (size1, size2)
+     int size1, size2;
+{
+  char *ptr = (char *) calloc (size1, size2);
+  if (ptr)
+    return ptr;
+
+  fatal ("out of memory");
+  return (char *)0;
+}
+
+char *
+xmalloc (size)
+     unsigned size;
+{
+  char *ptr = (char *) malloc (size);
+  if (ptr)
+    return ptr;
+
+  fatal ("out of memory");
+  return (char *)0;
+}
+
+char *
+xrealloc (ptr, size)
+     char *ptr;
+     unsigned size;
+{
+  register char *value = (char *) realloc (ptr, size);
+  if (value == 0)
+    fatal ("virtual memory exhausted");
+  return value;
+}
+
+int
+file_exists (name)
+     char *name;
+{
+  return access (name, R_OK) == 0;
+}
+
+/* Make a copy of a string INPUT with size SIZE.  */
+
+char *
+savestring (input, size)
+     char *input;
+     int size;
+{
+  char *output = (char *) xmalloc (size + 1);
+  bcopy (input, output, size);
+  output[size] = 0;
+  return output;
+}
+
+void
+dump_file (name)
+     char *name;
+{
+  FILE *stream = fopen (name, "r");
+  int no_demangle = !! getenv ("COLLECT_NO_DEMANGLE");
+
+  if (stream == 0)
+    return;
+  while (1)
+    {
+      int c;
+      while (c = getc (stream),
+	     c != EOF && (isalnum (c) || c == '_' || c == '$' || c == '.'))
+	obstack_1grow (&temporary_obstack, c);
+      if (obstack_object_size (&temporary_obstack) > 0)
+	{
+	  char *word, *p, *result;
+	  obstack_1grow (&temporary_obstack, '\0');
+	  word = obstack_finish (&temporary_obstack);
+
+	  if (*word == '.')
+	    ++word, putc ('.', stderr);
+	  p = word;
+	  if (*p == '_' && prepends_underscore)
+	    ++p;
+
+	  if (no_demangle)
+	    result = 0;
+	  else
+	    result = cplus_demangle (p, DMGL_PARAMS | DMGL_ANSI);
+
+	  if (result)
+	    {
+	      int diff;
+	      fputs (result, stderr);
+
+	      diff = strlen (word) - strlen (result);
+	      while (diff > 0)
+		--diff, putc (' ', stderr);
+	      while (diff < 0 && c == ' ')
+		++diff, c = getc (stream);
+
+	      free (result);
+	    }
+	  else
+	    fputs (word, stderr);
+
+	  fflush (stderr);
+	  obstack_free (&temporary_obstack, temporary_firstobj);
+	}
+      if (c == EOF)
+	break;
+      putc (c, stderr);
+    }
+}
+
+/* Decide whether the given symbol is:
+   a constructor (1), a destructor (2), or neither (0).  */
+
+static int
+is_ctor_dtor (s)
+     char *s;
+{
+  struct names { char *name; int len; int ret; int two_underscores; };
+
+  register struct names *p;
+  register int ch;
+  register char *orig_s = s;
+
+  static struct names special[] = {
+#ifdef NO_DOLLAR_IN_LABEL
+#ifdef NO_DOT_IN_LABEL
+    { "GLOBAL__I_", sizeof ("GLOBAL__I_")-1, 1, 0 },
+    { "GLOBAL__D_", sizeof ("GLOBAL__D_")-1, 2, 0 },
+#else
+    { "GLOBAL_.I.", sizeof ("GLOBAL_.I.")-1, 1, 0 },
+    { "GLOBAL_.D.", sizeof ("GLOBAL_.D.")-1, 2, 0 },
+#endif
+#else
+    { "GLOBAL_$I$", sizeof ("GLOBAL_$I$")-1, 1, 0 },
+    { "GLOBAL_$D$", sizeof ("GLOBAL_$D$")-1, 2, 0 },
+#endif
+    { "GLOBAL__FI_", sizeof ("GLOBAL__FI_")-1, 3, 0 },
+    { "GLOBAL__FD_", sizeof ("GLOBAL__FD_")-1, 4, 0 },
+#ifdef CFRONT_LOSSAGE /* Don't collect cfront initialization functions.
+			 cfront has its own linker procedure to collect them;
+			 if collect2 gets them too, they get collected twice
+			 when the cfront procedure is run and the compiler used
+			 for linking happens to be GCC.  */
+    { "sti__", sizeof ("sti__")-1, 1, 1 },
+    { "std__", sizeof ("std__")-1, 2, 1 },
+#endif /* CFRONT_LOSSAGE */
+    { NULL, 0, 0, 0 }
+  };
+
+  while ((ch = *s) == '_')
+    ++s;
+
+  if (s == orig_s)
+    return 0;
+
+  for (p = &special[0]; p->len > 0; p++)
+    {
+      if (ch == p->name[0]
+	  && (!p->two_underscores || ((s - orig_s) >= 2))
+	  && strncmp(s, p->name, p->len) == 0)
+	{
+	  return p->ret;
+	}
+    }
+  return 0;
+}
+
+
+/* Compute a string to use as the base of all temporary file names.
+   It is substituted for %g.  */
+
+static void
+choose_temp_base ()
+{
+  char *base = getenv ("TMPDIR");
+  int len;
+
+  if (base == (char *)0)
+    {
+#ifdef P_tmpdir
+      if (access (P_tmpdir, R_OK | W_OK) == 0)
+	base = P_tmpdir;
+#endif
+      if (base == (char *)0)
+	{
+	  if (access ("/usr/tmp", R_OK | W_OK) == 0)
+	    base = "/usr/tmp/";
+	  else
+	    base = "/tmp/";
+	}
+    }
+
+  len = strlen (base);
+  temp_filename = xmalloc (len + sizeof("/ccXXXXXX") + 1);
+  strcpy (temp_filename, base);
+  if (len > 0 && temp_filename[len-1] != '/')
+    temp_filename[len++] = '/';
+  strcpy (temp_filename + len, "ccXXXXXX");
+
+  mktemp (temp_filename);
+  temp_filename_length = strlen (temp_filename);
+}
+
+/* Routine to add variables to the environment.  */
+
+#ifndef HAVE_PUTENV
+
+int
+putenv (str)
+     char *str;
+{
+#ifndef VMS			/* nor about VMS */
+
+  extern char **environ;
+  char **old_environ = environ;
+  char **envp;
+  int num_envs = 0;
+  int name_len = 1;
+  char *p = str;
+  int ch;
+
+  while ((ch = *p++) != '\0' && ch != '=')
+    name_len++;
+
+  if (!ch)
+    abort ();
+
+  /* Search for replacing an existing environment variable, and
+     count the number of total environment variables.  */
+  for (envp = old_environ; *envp; envp++)
+    {
+      num_envs++;
+      if (!strncmp (str, *envp, name_len))
+	{
+	  *envp = str;
+	  return 0;
+	}
+    }
+
+  /* Add a new environment variable */
+  environ = (char **) xmalloc (sizeof (char *) * (num_envs+2));
+  *environ = str;
+  bcopy ((char *) old_environ, (char *) (environ + 1),
+	 sizeof (char *) * (num_envs+1));
+
+  return 0;
+#endif	/* VMS */
+}
+
+#endif	/* HAVE_PUTENV */
+
+/* By default, colon separates directories in a path.  */
+#ifndef PATH_SEPARATOR
+#define PATH_SEPARATOR ':'
+#endif
+
+/* We maintain two prefix lists: one from COMPILER_PATH environment variable
+   and one from the PATH variable.  */
+
+static struct path_prefix cpath, path;
+
+#ifdef CROSS_COMPILE
+/* This is the name of the target machine.  We use it to form the name
+   of the files to execute.  */
+
+static char *target_machine = TARGET_MACHINE;
+#endif
+
+/* Names under which we were executed.  Never return one of those files in our
+   searches.  */
+
+static struct path_prefix our_file_names;
+
+/* Determine if STRING is in PPREFIX.
+
+   This utility is currently only used to look up file names.  Prefix lists
+   record directory names.  This matters to us because the latter has a 
+   trailing slash, so I've added a flag to handle both.  */
+
+static int
+is_in_prefix_list (pprefix, string, filep)
+     struct path_prefix *pprefix;
+     char *string;
+     int filep;
+{
+  struct prefix_list *pl;
+
+  if (filep)
+    {
+      int len = strlen (string);
+
+      for (pl = pprefix->plist; pl; pl = pl->next)
+	{
+	  if (strncmp (pl->prefix, string, len) == 0
+	      && strcmp (pl->prefix + len, "/") == 0)
+	    return 1;
+	}
+    }
+  else
+    {
+      for (pl = pprefix->plist; pl; pl = pl->next)
+	{
+	  if (strcmp (pl->prefix, string) == 0)
+	    return 1;
+	}
+    }
+
+  return 0;
+}
+
+/* Search for NAME using prefix list PPREFIX.  We only look for executable
+   files. 
+
+   Return 0 if not found, otherwise return its name, allocated with malloc. */
+
+static char *
+find_a_file (pprefix, name)
+     struct path_prefix *pprefix;
+     char *name;
+{
+  char *temp;
+  struct prefix_list *pl;
+  int len = pprefix->max_len + strlen (name) + 1;
+
+#ifdef EXECUTABLE_SUFFIX
+  len += strlen (EXECUTABLE_SUFFIX);
+#endif
+
+  temp = xmalloc (len);
+
+  /* Determine the filename to execute (special case for absolute paths).  */
+
+  if (*name == '/')
+    {
+      if (access (name, X_OK) == 0)
+	{
+	  strcpy (temp, name);
+	  return temp;
+	}
+    }
+  else
+    for (pl = pprefix->plist; pl; pl = pl->next)
+      {
+	strcpy (temp, pl->prefix);
+	strcat (temp, name);
+	if (! is_in_prefix_list (&our_file_names, temp, 1)
+	    /* This is a kludge, but there seems no way around it.  */
+	    && strcmp (temp, "./ld") != 0
+	    && access (temp, X_OK) == 0)
+	  return temp;
+
+#ifdef EXECUTABLE_SUFFIX
+	/* Some systems have a suffix for executable files.
+	   So try appending that.  */
+	strcat (temp, EXECUTABLE_SUFFIX);
+	if (! is_in_prefix_list (&our_file_names, temp, 1)
+	    && access (temp, X_OK) == 0)
+	  return temp;
+#endif
+      }
+
+  free (temp);
+  return 0;
+}
+
+/* Add an entry for PREFIX to prefix list PPREFIX.  */
+
+static void
+add_prefix (pprefix, prefix)
+     struct path_prefix *pprefix;
+     char *prefix;
+{
+  struct prefix_list *pl, **prev;
+  int len;
+
+  if (pprefix->plist)
+    {
+      for (pl = pprefix->plist; pl->next; pl = pl->next)
+	;
+      prev = &pl->next;
+    }
+  else
+    prev = &pprefix->plist;
+
+  /* Keep track of the longest prefix */
+
+  len = strlen (prefix);
+  if (len > pprefix->max_len)
+    pprefix->max_len = len;
+
+  pl = (struct prefix_list *) xmalloc (sizeof (struct prefix_list));
+  pl->prefix = savestring (prefix, len);
+
+  if (*prev)
+    pl->next = *prev;
+  else
+    pl->next = (struct prefix_list *) 0;
+  *prev = pl;
+}
+
+/* Take the value of the environment variable ENV, break it into a path, and
+   add of the entries to PPREFIX.  */
+
+static void
+prefix_from_env (env, pprefix)
+     char *env;
+     struct path_prefix *pprefix;
+{
+  char *p = getenv (env);
+
+  if (p)
+    prefix_from_string (p, pprefix);
+}
+
+static void
+prefix_from_string (p, pprefix)
+     char *p;
+     struct path_prefix *pprefix;
+{
+  char *startp, *endp;
+  char *nstore = (char *) xmalloc (strlen (p) + 3);
+
+  startp = endp = p;
+  while (1)
+    {
+      if (*endp == PATH_SEPARATOR || *endp == 0)
+	{
+	  strncpy (nstore, startp, endp-startp);
+	  if (endp == startp)
+	    {
+	      strcpy (nstore, "./");
+	    }
+	  else if (endp[-1] != '/')
+	    {
+	      nstore[endp-startp] = '/';
+	      nstore[endp-startp+1] = 0;
+	    }
+	  else
+	    nstore[endp-startp] = 0;
+
+	  add_prefix (pprefix, nstore);
+	  if (*endp == 0)
+	    break;
+	  endp = startp = endp + 1;
+	}
+      else
+	endp++;
+    }
+}
+
+/* Main program. */
+
+int
+main (argc, argv)
+     int argc;
+     char *argv[];
+{
+  char *ld_suffix	= "ld";
+  char *full_ld_suffix	= ld_suffix;
+  char *real_ld_suffix	= "real-ld";
+  char *full_real_ld_suffix = real_ld_suffix;
+  char *collect_ld_suffix = "collect-ld";
+  char *nm_suffix	= "nm";
+  char *full_nm_suffix	= nm_suffix;
+  char *gnm_suffix	= "gnm";
+  char *full_gnm_suffix	= gnm_suffix;
+#ifdef LDD_SUFFIX
+  char *ldd_suffix	= LDD_SUFFIX;
+  char *full_ldd_suffix	= ldd_suffix;
+#endif
+  char *strip_suffix	= "strip";
+  char *full_strip_suffix = strip_suffix;
+  char *gstrip_suffix	= "gstrip";
+  char *full_gstrip_suffix = gstrip_suffix;
+  char *arg;
+  FILE *outf, *exportf;
+  char *ld_file_name;
+  char *collect_name;
+  char *collect_names;
+  char *p;
+  char **c_argv;
+  char **c_ptr;
+  char **ld1_argv	= (char **) xcalloc (sizeof (char *), argc+3);
+  char **ld1		= ld1_argv;
+  char **ld2_argv	= (char **) xcalloc (sizeof (char *), argc+6);
+  char **ld2		= ld2_argv;
+  char **object_lst	= (char **) xcalloc (sizeof (char *), argc);
+  char **object		= object_lst;
+  int first_file;
+  int num_c_args	= argc+7;
+
+#ifdef DEBUG
+  debug = 1;
+  vflag = 1;
+#endif
+
+  output_file = "a.out";
+
+  obstack_begin (&temporary_obstack, 0);
+  obstack_begin (&permanent_obstack, 0);
+  temporary_firstobj = (char *) obstack_alloc (&temporary_obstack, 0);
+  current_demangling_style = gnu_demangling;
+
+  /* We must check that we do not call ourselves in an infinite
+     recursion loop. We append the name used for us to the COLLECT_NAMES
+     environment variable.
+
+     In practice, collect will rarely invoke itself.  This can happen now
+     that we are no longer called gld.  A perfect example is when running
+     gcc in a build directory that has been installed.  When looking for 
+     ld's, we'll find our installed version and believe that's the real ld.  */
+
+  /* We must also append COLLECT_NAME to COLLECT_NAMES to watch for the
+     previous version of collect (the one that used COLLECT_NAME and only
+     handled two levels of recursion).  If we don't we may mutually recurse
+     forever.  This can happen (I think) when bootstrapping the old version
+     and a new one is installed (rare, but we should handle it).
+     ??? Hopefully references to COLLECT_NAME can be removed at some point.  */
+
+  collect_name = (char *) getenv ("COLLECT_NAME");
+  collect_names = (char *) getenv ("COLLECT_NAMES");
+
+  p = (char *) xmalloc (strlen ("COLLECT_NAMES=")
+			+ (collect_name ? strlen (collect_name) + 1 : 0)
+			+ (collect_names ? strlen (collect_names) + 1 : 0)
+			+ strlen (argv[0]) + 1);
+  strcpy (p, "COLLECT_NAMES=");
+  if (collect_name != 0)
+    sprintf (p + strlen (p), "%s%c", collect_name, PATH_SEPARATOR);
+  if (collect_names != 0)
+    sprintf (p + strlen (p), "%s%c", collect_names, PATH_SEPARATOR);
+  strcat (p, argv[0]);
+  putenv (p);
+
+  prefix_from_env ("COLLECT_NAMES", &our_file_names);
+
+  /* Set environment variable COLLECT_NAME to our name so the previous version
+     of collect won't find us.  If it does we'll mutually recurse forever.
+     This can happen when bootstrapping the new version and an old version is
+     installed.
+     ??? Hopefully this bit of code can be removed at some point.  */
+
+  p = xmalloc (strlen ("COLLECT_NAME=") + strlen (argv[0]) + 1);
+  sprintf (p, "COLLECT_NAME=%s", argv[0]);
+  putenv (p);
+
+  p = (char *) getenv ("COLLECT_GCC_OPTIONS");
+  if (p)
+    while (*p)
+      {
+	char *q = p;
+	while (*q && *q != ' ') q++;
+	if (*p == '-' && p[1] == 'm')
+	  num_c_args++;
+
+	if (*q) q++;
+	p = q;
+      }
+
+  c_ptr = c_argv = (char **) xcalloc (sizeof (char *), num_c_args);
+
+  if (argc < 2)
+    fatal ("no arguments");
+
+#ifdef SIGQUIT
+  if (signal (SIGQUIT, SIG_IGN) != SIG_IGN)
+    signal (SIGQUIT, handler);
+#endif
+  if (signal (SIGINT, SIG_IGN) != SIG_IGN)
+    signal (SIGINT, handler);
+#ifdef SIGALRM
+  if (signal (SIGALRM, SIG_IGN) != SIG_IGN)
+    signal (SIGALRM, handler);
+#endif
+#ifdef SIGHUP
+  if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
+    signal (SIGHUP, handler);
+#endif
+  if (signal (SIGSEGV, SIG_IGN) != SIG_IGN)
+    signal (SIGSEGV, handler);
+#ifdef SIGBUS
+  if (signal (SIGBUS, SIG_IGN) != SIG_IGN)
+    signal (SIGBUS, handler);
+#endif
+
+  /* Extract COMPILER_PATH and PATH into our prefix list.  */
+  prefix_from_env ("COMPILER_PATH", &cpath);
+  prefix_from_env ("PATH", &path);
+
+#ifdef CROSS_COMPILE
+  /* If we look for a program in the compiler directories, we just use
+     the short name, since these directories are already system-specific.
+     But it we look for a took in the system directories, we need to
+     qualify the program name with the target machine.  */
+
+  full_ld_suffix
+    = xcalloc (strlen (ld_suffix) + strlen (target_machine) + 2, 1);
+  strcpy (full_ld_suffix, target_machine);
+  strcat (full_ld_suffix, "-");
+  strcat (full_ld_suffix, ld_suffix);
+
+  full_real_ld_suffix
+    = xcalloc (strlen (real_ld_suffix) + strlen (target_machine) + 2, 1);
+  strcpy (full_real_ld_suffix, target_machine);
+  strcat (full_real_ld_suffix, "-");
+  strcat (full_real_ld_suffix, real_ld_suffix);
+
+#if 0
+  full_gld_suffix
+    = xcalloc (strlen (gld_suffix) + strlen (target_machine) + 2, 1);
+  strcpy (full_gld_suffix, target_machine);
+  strcat (full_gld_suffix, "-");
+  strcat (full_gld_suffix, gld_suffix);
+#endif
+
+  full_nm_suffix
+    = xcalloc (strlen (nm_suffix) + strlen (target_machine) + 2, 1);
+  strcpy (full_nm_suffix, target_machine);
+  strcat (full_nm_suffix, "-");
+  strcat (full_nm_suffix, nm_suffix);
+
+  full_gnm_suffix
+    = xcalloc (strlen (gnm_suffix) + strlen (target_machine) + 2, 1);
+  strcpy (full_gnm_suffix, target_machine);
+  strcat (full_gnm_suffix, "-");
+  strcat (full_gnm_suffix, gnm_suffix);
+
+#ifdef LDD_SUFFIX
+  full_ldd_suffix
+    = xcalloc (strlen (ldd_suffix) + strlen (target_machine) + 2, 1);
+  strcpy (full_ldd_suffix, target_machine);
+  strcat (full_ldd_suffix, "-");
+  strcat (full_ldd_suffix, ldd_suffix);
+#endif
+
+  full_strip_suffix
+    = xcalloc (strlen (strip_suffix) + strlen (target_machine) + 2, 1);
+  strcpy (full_strip_suffix, target_machine);
+  strcat (full_strip_suffix, "-");
+  strcat (full_strip_suffix, strip_suffix);
+  
+  full_gstrip_suffix
+    = xcalloc (strlen (gstrip_suffix) + strlen (target_machine) + 2, 1);
+  strcpy (full_gstrip_suffix, target_machine);
+  strcat (full_gstrip_suffix, "-");
+  strcat (full_gstrip_suffix, gstrip_suffix);
+#endif /* CROSS_COMPILE */
+
+  /* Try to discover a valid linker/nm/strip to use.  */
+
+  /* Maybe we know the right file to use (if not cross).  */
+#ifdef REAL_LD_FILE_NAME
+  ld_file_name = find_a_file (&path, REAL_LD_FILE_NAME);
+  if (ld_file_name == 0)
+#endif
+  /* Search the (target-specific) compiler dirs for ld'.  */
+  ld_file_name = find_a_file (&cpath, real_ld_suffix);
+  /* Likewise for `collect-ld'.  */
+  if (ld_file_name == 0)
+    ld_file_name = find_a_file (&cpath, collect_ld_suffix);
+  /* Search the compiler directories for `ld'.  We have protection against
+     recursive calls in find_a_file.  */
+  if (ld_file_name == 0)
+    ld_file_name = find_a_file (&cpath, ld_suffix);
+  /* Search the ordinary system bin directories
+     for `ld' (if native linking) or `TARGET-ld' (if cross).  */
+  if (ld_file_name == 0)
+    ld_file_name = find_a_file (&path, full_ld_suffix);
+
+  /* If we've invoked ourselves, try again with LD_FILE_NAME.  */
+
+  if (collect_names != 0)
+    {
+      if (ld_file_name != 0)
+	{
+	  argv[0] = ld_file_name;
+	  execvp (argv[0], argv);
+	}
+      fatal ("cannot find `ld'");
+    }
+
+#ifdef REAL_NM_FILE_NAME
+  nm_file_name = find_a_file (&path, REAL_NM_FILE_NAME);
+  if (nm_file_name == 0)
+#endif
+  nm_file_name = find_a_file (&cpath, gnm_suffix);
+  if (nm_file_name == 0)
+    nm_file_name = find_a_file (&path, full_gnm_suffix);
+  if (nm_file_name == 0)
+    nm_file_name = find_a_file (&cpath, nm_suffix);
+  if (nm_file_name == 0)
+    nm_file_name = find_a_file (&path, full_nm_suffix);
+
+#ifdef LDD_SUFFIX
+  ldd_file_name = find_a_file (&cpath, ldd_suffix);
+  if (ldd_file_name == 0)
+    ldd_file_name = find_a_file (&path, full_ldd_suffix);
+#endif
+
+#ifdef REAL_STRIP_FILE_NAME
+  strip_file_name = find_a_file (&path, REAL_STRIP_FILE_NAME);
+  if (strip_file_name == 0)
+#endif
+  strip_file_name = find_a_file (&cpath, gstrip_suffix);
+  if (strip_file_name == 0)
+    strip_file_name = find_a_file (&path, full_gstrip_suffix);
+  if (strip_file_name == 0)
+    strip_file_name = find_a_file (&cpath, strip_suffix);
+  if (strip_file_name == 0)
+    strip_file_name = find_a_file (&path, full_strip_suffix);
+
+  /* Determine the full path name of the C compiler to use.  */
+  c_file_name = getenv ("COLLECT_GCC");
+  if (c_file_name == 0)
+    {
+#ifdef CROSS_COMPILE
+      c_file_name = xcalloc (sizeof ("gcc-") + strlen (target_machine) + 1, 1);
+      strcpy (c_file_name, target_machine);
+      strcat (c_file_name, "-gcc");
+#else
+      c_file_name = "gcc";
+#endif
+    }
+
+  p = find_a_file (&cpath, c_file_name);
+
+  /* Here it should be safe to use the system search path since we should have
+     already qualified the name of the compiler when it is needed.  */
+  if (p == 0)
+    p = find_a_file (&path, c_file_name);
+
+  if (p)
+    c_file_name = p;
+
+  *ld1++ = *ld2++ = ld_file_name;
+
+  /* Make temp file names. */
+  choose_temp_base ();
+  c_file = xcalloc (temp_filename_length + sizeof (".c"), 1);
+  o_file = xcalloc (temp_filename_length + sizeof (".o"), 1);
+  export_file = xmalloc (temp_filename_length + sizeof (".x"));
+  ldout = xmalloc (temp_filename_length + sizeof (".ld"));
+  sprintf (ldout, "%s.ld", temp_filename);
+  sprintf (c_file, "%s.c", temp_filename);
+  sprintf (o_file, "%s.o", temp_filename);
+  sprintf (export_file, "%s.x", temp_filename);
+  *c_ptr++ = c_file_name;
+  *c_ptr++ = "-c";
+  *c_ptr++ = "-o";
+  *c_ptr++ = o_file;
+
+  /* !!! When GCC calls collect2,
+     it does not know whether it is calling collect2 or ld.
+     So collect2 cannot meaningfully understand any options
+     except those ld understands.
+     If you propose to make GCC pass some other option,
+     just imagine what will happen if ld is really ld!!!  */
+
+  /* Parse arguments.  Remember output file spec, pass the rest to ld. */
+  /* After the first file, put in the c++ rt0.  */
+
+  first_file = 1;
+  while ((arg = *++argv) != (char *)0)
+    {
+      *ld1++ = *ld2++ = arg;
+
+      if (arg[0] == '-')
+	{
+	  switch (arg[1])
+	    {
+	    case 'd':
+	      if (!strcmp (arg, "-debug"))
+		{
+		  debug = 1;
+		  vflag = 1;
+		  ld1--;
+		  ld2--;
+		}
+	      break;
+
+#ifdef COLLECT_EXPORT_LIST
+	    case 'b':
+	      if ((!strncmp (arg, "-bE:", 4)
+		   || !strncmp (arg, "-bexport:", 9))
+		  && strcmp (arg, "-bexport:/usr/lib/libg.exp"))
+		auto_export = 0;
+	      break;
+#endif
+
+	    case 'l':
+	      if (first_file)
+		{
+		  /* place o_file BEFORE this argument! */
+		  first_file = 0;
+		  ld2--;
+		  *ld2++ = o_file;
+		  *ld2++ = arg;
+		}
+	      break;
+
+	    case 'o':
+	      if (arg[2] == '\0')
+		output_file = *ld1++ = *ld2++ = *++argv;
+	      else
+		output_file = &arg[2];
+	      break;
+
+	    case 'r':
+	      if (arg[2] == '\0')
+		rflag = 1;
+	      break;
+
+	    case 's':
+	      if (arg[2] == '\0' && do_collecting)
+		{
+		  /* We must strip after the nm run, otherwise C++ linking
+		     won't work.  Thus we strip in the second ld run, or
+		     else with strip if there is no second ld run.  */
+		  strip_flag = 1;
+		  ld1--;
+		}
+	      break;
+
+	    case 'v':
+	      if (arg[2] == '\0')
+		vflag = 1;
+	      break;
+	    }
+	}
+      else if ((p = rindex (arg, '.')) != (char *)0
+	       && (strcmp (p, ".o") == 0 || strcmp (p, ".a") == 0))
+	{
+	  if (first_file)
+	    {
+	      first_file = 0;
+	      if (p[1] == 'o')
+		*ld2++ = o_file;
+	      else
+		{
+		  /* place o_file BEFORE this argument! */
+		  ld2--;
+		  *ld2++ = o_file;
+		  *ld2++ = arg;
+		}
+	    }
+	  if (p[1] == 'o')
+	    *object++ = arg;
+	}
+    }
+
+  /* Get any options that the upper GCC wants to pass to the sub-GCC.  */
+  p = (char *) getenv ("COLLECT_GCC_OPTIONS");
+  if (p)
+    while (*p)
+      {
+	char *q = p;
+	while (*q && *q != ' ') q++;
+	if (*p == '-' && (p[1] == 'm' || p[1] == 'f'))
+	  *c_ptr++ = savestring (p, q - p);
+	if (strncmp (p, "-shared", sizeof ("shared") - 1) == 0)
+	  shared_obj = 1;
+
+	if (*q) q++;
+	p = q;
+      }
+
+#ifdef COLLECT_EXPORT_LIST
+  /* The AIX linker will discard static constructors in object files if
+     nothing else in the file is referenced, so look at them first.  */
+  while (object_lst < object)
+    scan_prog_file (*object_lst++, PASS_OBJ);
+
+  {
+    char *buf = alloca (strlen (export_file) + 5);
+    sprintf (buf, "-bE:%s", export_file);
+    *ld1++ = buf;
+    *ld2++ = buf;
+    exportf = fopen (export_file, "w");
+    if (exportf == (FILE *)0)
+      fatal_perror ("%s", export_file);
+    write_export_file (exportf);
+    if (fclose (exportf))
+      fatal_perror ("closing %s", export_file);
+  }
+#endif
+
+  *c_ptr++ = c_file;
+  *object = *c_ptr = *ld1 = (char *)0;
+
+  if (vflag)
+    {
+      fprintf (stderr, "collect2 version %s", version_string);
+#ifdef TARGET_VERSION
+      TARGET_VERSION;
+#endif
+      fprintf (stderr, "\n");
+    }
+
+  if (debug)
+    {
+      char *ptr;
+      fprintf (stderr, "ld_file_name        = %s\n",
+	       (ld_file_name ? ld_file_name : "not found"));
+      fprintf (stderr, "c_file_name         = %s\n",
+	       (c_file_name ? c_file_name : "not found"));
+      fprintf (stderr, "nm_file_name        = %s\n",
+	       (nm_file_name ? nm_file_name : "not found"));
+#ifdef LDD_SUFFIX
+      fprintf (stderr, "ldd_file_name       = %s\n",
+	       (ldd_file_name ? ldd_file_name : "not found"));
+#endif
+      fprintf (stderr, "strip_file_name     = %s\n",
+	       (strip_file_name ? strip_file_name : "not found"));
+      fprintf (stderr, "c_file              = %s\n",
+	       (c_file ? c_file : "not found"));
+      fprintf (stderr, "o_file              = %s\n",
+	       (o_file ? o_file : "not found"));
+
+      ptr = getenv ("COLLECT_NAMES");
+      if (ptr)
+	fprintf (stderr, "COLLECT_NAMES       = %s\n", ptr);
+
+      ptr = getenv ("COLLECT_GCC_OPTIONS");
+      if (ptr)
+	fprintf (stderr, "COLLECT_GCC_OPTIONS = %s\n", ptr);
+
+      ptr = getenv ("COLLECT_GCC");
+      if (ptr)
+	fprintf (stderr, "COLLECT_GCC         = %s\n", ptr);
+
+      ptr = getenv ("COMPILER_PATH");
+      if (ptr)
+	fprintf (stderr, "COMPILER_PATH       = %s\n", ptr);
+
+      ptr = getenv ("LIBRARY_PATH");
+      if (ptr)
+	fprintf (stderr, "LIBRARY_PATH        = %s\n", ptr);
+
+      fprintf (stderr, "\n");
+    }
+
+  /* Load the program, searching all libraries.  */
+
+  collect_execute ("ld", ld1_argv, ldout);
+  do_wait ("ld");
+  dump_file (ldout);
+  unlink (ldout);
+
+  /* If -r or they'll be run via some other method, don't build the
+     constructor or destructor list, just return now. */
+  if (rflag || ! do_collecting)
+    return 0;
+
+  /* Examine the namelist with nm and search it for static constructors
+     and destructors to call.
+     Write the constructor and destructor tables to a .s file and reload. */
+
+  scan_prog_file (output_file, PASS_FIRST);
+
+#ifdef SCAN_LIBRARIES
+  scan_libraries (output_file);
+#endif
+
+  if (debug)
+    {
+      fprintf (stderr, "%d constructor(s) found\n", constructors.number);
+      fprintf (stderr, "%d destructor(s)  found\n", destructors.number);
+    }
+
+  if (constructors.number == 0 && destructors.number == 0
+#ifdef LDD_SUFFIX
+      /* If we will be running these functions ourselves, we want to emit
+	 stubs into the shared library so that we don't have to relink
+	 dependent programs when we add static objects.  */
+      && ! shared_obj
+#endif
+      )
+    {
+      /* Strip now if it was requested on the command line.  */
+      if (strip_flag)
+	{
+	  char **strip_argv = (char **) xcalloc (sizeof (char *), 3);
+	  strip_argv[0] = strip_file_name;
+	  strip_argv[1] = output_file;
+	  strip_argv[2] = (char *) 0;
+	  fork_execute ("strip", strip_argv);
+	}
+
+#ifdef COLLECT_EXPORT_LIST
+      maybe_unlink (export_file);
+#endif
+      return 0;
+    }
+
+  maybe_unlink(output_file);
+  outf = fopen (c_file, "w");
+  if (outf == (FILE *)0)
+    fatal_perror ("%s", c_file);
+
+  write_c_file (outf, c_file);
+
+  if (fclose (outf))
+    fatal_perror ("closing %s", c_file);
+
+  /* Tell the linker that we have initializer and finalizer functions.  */
+#ifdef LD_INIT_SWITCH
+  *ld2++ = LD_INIT_SWITCH;
+  *ld2++ = initname;
+  *ld2++ = LD_FINI_SWITCH;
+  *ld2++ = fininame;
+#endif
+  *ld2 = (char*)0;
+
+#ifdef COLLECT_EXPORT_LIST
+  if (shared_obj)
+    {
+      add_to_list (&exports, initname);
+      add_to_list (&exports, fininame);
+      add_to_list (&exports, "_GLOBAL__DI");
+      add_to_list (&exports, "_GLOBAL__DD");
+      exportf = fopen (export_file, "w");
+      if (exportf == (FILE *)0)
+	fatal_perror ("%s", export_file);
+      write_export_file (exportf);
+      if (fclose (exportf))
+	fatal_perror ("closing %s", export_file);
+    }
+#endif
+
+  if (debug)
+    {
+      fprintf (stderr, "\n========== output_file = %s, c_file = %s\n",
+	       output_file, c_file);
+      write_c_file (stderr, "stderr");
+      fprintf (stderr, "========== end of c_file\n\n");
+#ifdef COLLECT_EXPORT_LIST
+      fprintf (stderr, "\n========== export_file = %s\n", export_file);
+      write_export_file (stderr);
+      fprintf (stderr, "========== end of export_file\n\n");
+#endif
+    }
+
+  /* Assemble the constructor and destructor tables.
+     Link the tables in with the rest of the program. */
+
+  fork_execute ("gcc",  c_argv);
+  fork_execute ("ld", ld2_argv);
+
+  /* Let scan_prog_file do any final mods (OSF/rose needs this for
+     constructors/destructors in shared libraries.  */
+  scan_prog_file (output_file, PASS_SECOND);
+
+  maybe_unlink (c_file);
+  maybe_unlink (o_file);
+  maybe_unlink (export_file);
+  return 0;
+}
+
+
+/* Wait for a process to finish, and exit if a non-zero status is found. */
+
+int
+collect_wait (prog)
+     char *prog;
+{
+  int status;
+
+  wait (&status);
+  if (status)
+    {
+      if (WIFSIGNALED (status))
+	{
+	  int sig = WTERMSIG (status);
+#ifdef NO_SYS_SIGLIST
+	  error ("%s terminated with signal %d %s",
+		 prog,
+		 sig,
+		 (status & 0200) ? ", core dumped" : "");
+#else
+	  error ("%s terminated with signal %d [%s]%s",
+		 prog,
+		 sig,
+		 sys_siglist[sig],
+		 (status & 0200) ? ", core dumped" : "");
+#endif
+
+	  collect_exit (127);
+	}
+
+      if (WIFEXITED (status))
+	return WEXITSTATUS (status);
+    }
+  return 0;
+}
+
+static void
+do_wait (prog)
+     char *prog;
+{
+  int ret = collect_wait (prog);
+  if (ret != 0)
+    {
+      error ("%s returned %d exit status", prog, ret);
+      collect_exit (ret);
+    }
+}
+
+
+/* Fork and execute a program, and wait for the reply.  */
+
+void
+collect_execute (prog, argv, redir)
+     char *prog;
+     char **argv;
+     char *redir;
+{
+  int pid;
+
+  if (vflag || debug)
+    {
+      char **p_argv;
+      char *str;
+
+      if (argv[0])
+	fprintf (stderr, "%s", argv[0]);
+      else
+	fprintf (stderr, "[cannot find %s]", prog);
+
+      for (p_argv = &argv[1]; (str = *p_argv) != (char *)0; p_argv++)
+	fprintf (stderr, " %s", str);
+
+      fprintf (stderr, "\n");
+    }
+
+  fflush (stdout);
+  fflush (stderr);
+
+  /* If we can't find a program we need, complain error.  Do this here
+     since we might not end up needing something that we couldn't find.  */
+
+  if (argv[0] == 0)
+    fatal ("cannot find `%s'", prog);
+
+  pid = vfork ();
+  if (pid == -1)
+    {
+#ifdef vfork
+      fatal_perror ("fork");
+#else
+      fatal_perror ("vfork");
+#endif
+    }
+
+  if (pid == 0)			/* child context */
+    {
+      if (redir)
+	{
+	  unlink (redir);
+	  if (freopen (redir, "a", stdout) == NULL)
+	    fatal_perror ("redirecting stdout");
+	  if (freopen (redir, "a", stderr) == NULL)
+	    fatal_perror ("redirecting stderr");
+	}
+
+      execvp (argv[0], argv);
+      fatal_perror ("executing %s", prog);
+    }
+}
+
+static void
+fork_execute (prog, argv)
+     char *prog;
+     char **argv;
+{
+  collect_execute (prog, argv, NULL);
+  do_wait (prog);
+}
+
+/* Unlink a file unless we are debugging.  */
+
+static void
+maybe_unlink (file)
+     char *file;
+{
+  if (!debug)
+    unlink (file);
+  else
+    fprintf (stderr, "[Leaving %s]\n", file);
+}
+
+
+/* Add a name to a linked list.  */
+
+static void
+add_to_list (head_ptr, name)
+     struct head *head_ptr;
+     char *name;
+{
+  struct id *newid
+    = (struct id *) xcalloc (sizeof (struct id) + strlen (name), 1);
+  struct id *p;
+  static long sequence_number = 0;
+  strcpy (newid->name, name);
+
+  if (head_ptr->first)
+    head_ptr->last->next = newid;
+  else
+    head_ptr->first = newid;
+
+  /* Check for duplicate symbols.  */
+  for (p = head_ptr->first;
+       strcmp (name, p->name) != 0;
+       p = p->next)
+    ;
+  if (p != newid)
+    {
+      head_ptr->last->next = 0;
+      free (newid);
+      return;
+    }
+
+  newid->sequence = ++sequence_number;
+  head_ptr->last = newid;
+  head_ptr->number++;
+}
+
+/* Write: `prefix', the names on list LIST, `suffix'.  */
+
+static void
+write_list (stream, prefix, list)
+     FILE *stream;
+     char *prefix;
+     struct id *list;
+{
+  while (list)
+    {
+      fprintf (stream, "%sx%d,\n", prefix, list->sequence);
+      list = list->next;
+    }
+}
+
+static void
+write_list_with_asm (stream, prefix, list)
+     FILE *stream;
+     char *prefix;
+     struct id *list;
+{
+  while (list)
+    {
+      fprintf (stream, "%sx%d __asm__ (\"%s\");\n",
+	       prefix, list->sequence, list->name);
+      list = list->next;
+    }
+}
+
+/* Write out the constructor and destructor tables statically (for a shared
+   object), along with the functions to execute them.  */
+
+static void
+write_c_file_stat (stream, name)
+     FILE *stream;
+     char *name;
+{
+  char *prefix, *p, *q;
+
+  /* Figure out name of output_file, stripping off .so version.  */
+  p = rindex (output_file, '/');
+  if (p == 0)
+    p = (char *) output_file;
+  else
+    p++;
+  q = p;
+  while (q)
+    {
+      q = index (q,'.');
+      if (q == 0)
+	{
+	  q = p + strlen (p);
+	  break;
+	}
+      else
+	{
+	  if (strncmp (q, ".so", 3) == 0)
+	    {
+	      q += 3;
+	      break;
+	    }
+	  else
+	    q++;
+	}
+    }
+  /* q points to null at end of the string (or . of the .so version) */
+  prefix = xmalloc (q - p + 1);
+  strncpy (prefix, p, q - p);
+  prefix[q - p] = 0;
+  for (q = prefix; *q; q++)
+    if (!isalnum (*q))
+      *q = '_';
+  if (debug)
+    fprintf (stderr, "\nwrite_c_file - output name is %s, prefix is %s\n",
+	     output_file, prefix);
+
+#define INIT_NAME_FORMAT "_GLOBAL__FI_%s"
+  initname = xmalloc (strlen (prefix) + sizeof (INIT_NAME_FORMAT) - 2);
+  sprintf (initname, INIT_NAME_FORMAT, prefix);
+
+#define FINI_NAME_FORMAT "_GLOBAL__FD_%s"
+  fininame = xmalloc (strlen (prefix) + sizeof (FINI_NAME_FORMAT) - 2);
+  sprintf (fininame, FINI_NAME_FORMAT, prefix);
+
+  free (prefix);
+
+  /* Write the tables as C code  */
+
+  fprintf (stream, "static int count;\n");
+  fprintf (stream, "typedef void entry_pt();\n");
+  write_list_with_asm (stream, "extern entry_pt ", constructors.first);
+  fprintf (stream, "void %s() {\n", initname);
+  if (constructors.number > 0)
+    {
+      fprintf (stream, "\tstatic entry_pt *ctors[] = {\n");
+      write_list (stream, "\t\t", constructors.first);
+      fprintf (stream, "\t};\n");
+      fprintf (stream, "\tentry_pt **p;\n");
+      fprintf (stream, "\tif (count++ != 0) return;\n");
+      fprintf (stream, "\tp = ctors + %d;\n", constructors.number);
+      fprintf (stream, "\twhile (p > ctors) (*--p)();\n");
+    }
+  else
+    fprintf (stream, "\t++count;\n");
+  fprintf (stream, "}\n");
+  write_list_with_asm (stream, "extern entry_pt ", destructors.first);
+  fprintf (stream, "void %s() {\n", fininame);
+  if (destructors.number > 0)
+    {
+      fprintf (stream, "\tstatic entry_pt *dtors[] = {\n");
+      write_list (stream, "\t\t", destructors.first);
+      fprintf (stream, "\t};\n");
+      fprintf (stream, "\tentry_pt **p;\n");
+      fprintf (stream, "\tif (--count != 0) return;\n");
+      fprintf (stream, "\tp = dtors;\n");
+      fprintf (stream, "\twhile (p < dtors + %d) (*p++)();\n",
+	       destructors.number);
+    }
+  fprintf (stream, "}\n");
+
+  if (shared_obj)
+    {
+      fprintf (stream, "void _GLOBAL__DI() {\n\t%s();\n}\n", initname);
+      fprintf (stream, "void _GLOBAL__DD() {\n\t%s();\n}\n", fininame);
+    }
+}
+
+/* Write the constructor/destructor tables. */
+
+static void
+write_c_file_glob (stream, name)
+     FILE *stream;
+     char *name;
+{
+  /* Write the tables as C code  */
+
+  fprintf (stream, "typedef void entry_pt();\n\n");
+    
+  write_list_with_asm (stream, "extern entry_pt ", constructors.first);
+    
+  fprintf (stream, "\nentry_pt * __CTOR_LIST__[] = {\n");
+  fprintf (stream, "\t(entry_pt *) %d,\n", constructors.number);
+  write_list (stream, "\t", constructors.first);
+  fprintf (stream, "\t0\n};\n\n");
+
+  write_list_with_asm (stream, "extern entry_pt ", destructors.first);
+
+  fprintf (stream, "\nentry_pt * __DTOR_LIST__[] = {\n");
+  fprintf (stream, "\t(entry_pt *) %d,\n", destructors.number);
+  write_list (stream, "\t", destructors.first);
+  fprintf (stream, "\t0\n};\n\n");
+
+  fprintf (stream, "extern entry_pt %s;\n", NAME__MAIN);
+  fprintf (stream, "entry_pt *__main_reference = %s;\n\n", NAME__MAIN);
+}
+
+static void
+write_c_file (stream, name)
+     FILE *stream;
+     char *name;
+{
+#ifndef LD_INIT_SWITCH
+  if (! shared_obj)
+    write_c_file_glob (stream, name);
+  else
+#endif
+    write_c_file_stat (stream, name);
+}
+
+static void
+write_export_file (stream)
+     FILE *stream;
+{
+  struct id *list = exports.first;
+  for (; list; list = list->next)
+    fprintf (stream, "%s\n", list->name);
+}
+
+#ifdef OBJECT_FORMAT_NONE
+
+/* Generic version to scan the name list of the loaded program for
+   the symbols g++ uses for static constructors and destructors.
+
+   The constructor table begins at __CTOR_LIST__ and contains a count
+   of the number of pointers (or -1 if the constructors are built in a
+   separate section by the linker), followed by the pointers to the
+   constructor functions, terminated with a null pointer.  The
+   destructor table has the same format, and begins at __DTOR_LIST__.  */
+
+static void
+scan_prog_file (prog_name, which_pass)
+     char *prog_name;
+     enum pass which_pass;
+{
+  void (*int_handler) ();
+  void (*quit_handler) ();
+  char *nm_argv[4];
+  int pid;
+  int argc = 0;
+  int pipe_fd[2];
+  char *p, buf[1024];
+  FILE *inf;
+
+  if (which_pass == PASS_SECOND)
+    return;
+
+  /* If we don't have an `nm', complain.  */
+  if (nm_file_name == 0)
+    fatal ("cannot find `nm'");
+
+  nm_argv[argc++] = nm_file_name;
+  if (NM_FLAGS[0] != '\0')
+    nm_argv[argc++] = NM_FLAGS;
+
+  nm_argv[argc++] = prog_name;
+  nm_argv[argc++] = (char *)0;
+
+  if (pipe (pipe_fd) < 0)
+    fatal_perror ("pipe");
+
+  inf = fdopen (pipe_fd[0], "r");
+  if (inf == (FILE *)0)
+    fatal_perror ("fdopen");
+
+  /* Trace if needed.  */
+  if (vflag)
+    {
+      char **p_argv;
+      char *str;
+
+      for (p_argv = &nm_argv[0]; (str = *p_argv) != (char *)0; p_argv++)
+	fprintf (stderr, " %s", str);
+
+      fprintf (stderr, "\n");
+    }
+
+  fflush (stdout);
+  fflush (stderr);
+
+  /* Spawn child nm on pipe */
+  pid = vfork ();
+  if (pid == -1)
+    {
+#ifdef vfork
+      fatal_perror ("fork");
+#else
+      fatal_perror ("vfork");
+#endif
+    }
+
+  if (pid == 0)			/* child context */
+    {
+      /* setup stdout */
+      if (dup2 (pipe_fd[1], 1) < 0)
+	fatal_perror ("dup2 (%d, 1)", pipe_fd[1]);
+
+      if (close (pipe_fd[0]) < 0)
+	fatal_perror ("close (%d)", pipe_fd[0]);
+
+      if (close (pipe_fd[1]) < 0)
+	fatal_perror ("close (%d)", pipe_fd[1]);
+
+      execv (nm_file_name, nm_argv);
+      fatal_perror ("executing %s", nm_file_name);
+    }
+
+  /* Parent context from here on.  */
+  int_handler  = (void (*) ())signal (SIGINT,  SIG_IGN);
+#ifdef SIGQUIT
+  quit_handler = (void (*) ())signal (SIGQUIT, SIG_IGN);
+#endif
+
+  if (close (pipe_fd[1]) < 0)
+    fatal_perror ("close (%d)", pipe_fd[1]);
+
+  if (debug)
+    fprintf (stderr, "\nnm output with constructors/destructors.\n");
+
+  /* Read each line of nm output.  */
+  while (fgets (buf, sizeof buf, inf) != (char *)0)
+    {
+      int ch, ch2;
+      char *name, *end;
+
+      /* If it contains a constructor or destructor name, add the name
+	 to the appropriate list. */
+
+      for (p = buf; (ch = *p) != '\0' && ch != '\n' && ch != '_'; p++)
+	if (ch == ' ' && p[1] == 'U' && p[2] == ' ')
+	  break;
+
+      if (ch != '_')
+	continue;
+  
+      name = p;
+      /* Find the end of the symbol name.
+	 Don't include `|', because Encore nm can tack that on the end.  */
+      for (end = p; (ch2 = *end) != '\0' && !isspace (ch2) && ch2 != '|';
+	   end++)
+	continue;
+
+
+      *end = '\0';
+      switch (is_ctor_dtor (name))
+	{
+	case 1:
+	  if (which_pass != PASS_LIB)
+	    add_to_list (&constructors, name);
+	  break;
+
+	case 2:
+	  if (which_pass != PASS_LIB)
+	    add_to_list (&destructors, name);
+	  break;
+
+	case 3:
+	  if (which_pass != PASS_LIB)
+	    fatal ("init function found in object %s", prog_name);
+#ifndef LD_INIT_SWITCH
+	  add_to_list (&constructors, name);
+#endif
+	  break;
+
+	case 4:
+	  if (which_pass != PASS_LIB)
+	    fatal ("fini function found in object %s", prog_name);
+#ifndef LD_FINI_SWITCH
+	  add_to_list (&destructors, name);
+#endif
+	  break;
+
+	default:		/* not a constructor or destructor */
+	  continue;
+	}
+
+      if (debug)
+	fprintf (stderr, "\t%s\n", buf);
+    }
+
+  if (debug)
+    fprintf (stderr, "\n");
+
+  if (fclose (inf) != 0)
+    fatal_perror ("fclose of pipe");
+
+  do_wait (nm_file_name);
+
+  signal (SIGINT,  int_handler);
+#ifdef SIGQUIT
+  signal (SIGQUIT, quit_handler);
+#endif
+}
+
+#if SUNOS4_SHARED_LIBRARIES
+
+/* Routines to scan the SunOS 4 _DYNAMIC structure to find shared libraries
+   that the output file depends upon and their initialization/finalization
+   routines, if any.  */
+
+#include <a.out.h>
+#include <fcntl.h>
+#include <link.h>
+#include <sys/mman.h>
+#include <sys/param.h>
+#include <sys/unistd.h>
+#include <sys/dir.h>
+
+/* pointers to the object file */
+unsigned object;    	/* address of memory mapped file */
+unsigned objsize;    	/* size of memory mapped to file */
+char * code;		/* pointer to code segment */
+char * data;		/* pointer to data segment */
+struct nlist *symtab;	/* pointer to symbol table */
+struct link_dynamic *ld;
+struct link_dynamic_2 *ld_2;
+struct head libraries;
+
+/* Map the file indicated by NAME into memory and store its address.  */
+
+static void
+mapfile (name)
+     char *name;
+{
+  int fp;
+  struct stat s;
+  if ((fp = open (name, O_RDONLY)) == -1)
+    fatal ("unable to open file '%s'", name);
+  if (fstat (fp, &s) == -1)
+    fatal ("unable to stat file '%s'", name);
+
+  objsize = s.st_size;
+  object = (unsigned) mmap (0, objsize, PROT_READ|PROT_WRITE, MAP_PRIVATE,
+			    fp, 0);
+  if (object == -1)
+    fatal ("unable to mmap file '%s'", name);
+
+  close (fp);
+}
+
+/* Helpers for locatelib.  */
+
+static char *libname;
+
+static int
+libselect (d)
+     struct direct *d;
+{
+  return (strncmp (libname, d->d_name, strlen (libname)) == 0);
+}
+
+/* If one file has an additional numeric extension past LIBNAME, then put
+   that one first in the sort.  If both files have additional numeric
+   extensions, then put the one with the higher number first in the sort.
+
+   We must verify that the extension is numeric, because Sun saves the
+   original versions of patched libraries with a .FCS extension.  Files with
+   invalid extensions must go last in the sort, so that they won't be used.  */
+
+static int
+libcompare (d1, d2)
+     struct direct **d1, **d2;
+{
+  int i1, i2 = strlen (libname);
+  char *e1 = (*d1)->d_name + i2;
+  char *e2 = (*d2)->d_name + i2;
+
+  while (*e1 && *e2 && *e1 == '.' && *e2 == '.'
+	 && e1[1] && isdigit (e1[1]) && e2[1] && isdigit (e2[1]))
+    {
+      ++e1;
+      ++e2;
+      i1 = strtol (e1, &e1, 10);
+      i2 = strtol (e2, &e2, 10);
+      if (i1 != i2)
+	return i1 - i2;
+    }
+
+  if (*e1)
+    {
+      /* It has a valid numeric extension, prefer this one.  */
+      if (*e1 == '.' && e1[1] && isdigit (e1[1]))
+	return 1;
+      /* It has a invalid numeric extension, must prefer the other one.  */
+      else
+	return -1;
+    }
+  else if (*e2)
+    {
+      /* It has a valid numeric extension, prefer this one.  */
+      if (*e2 == '.' && e2[1] && isdigit (e2[1]))
+	return -1;
+      /* It has a invalid numeric extension, must prefer the other one.  */
+      else
+	return 1;
+    }
+  else
+    return 0;
+}
+
+/* Given the name NAME of a dynamic dependency, find its pathname and add
+   it to the list of libraries.  */
+
+static void
+locatelib (name)
+     char *name;
+{
+  static char **l;
+  static int cnt;
+  char buf[MAXPATHLEN];
+  char *p, *q;
+  char **pp;
+
+  if (l == 0)
+    {
+      char *ld_rules;
+      char *ldr = 0;
+      /* counting elements in array, need 1 extra for null */
+      cnt = 1;  
+      ld_rules = (char *) (ld_2->ld_rules + code);
+      if (ld_rules)
+	{
+	  cnt++;
+	  for (; *ld_rules != 0; ld_rules++)
+	    if (*ld_rules == ':')
+	      cnt++;
+	  ld_rules = (char *) (ld_2->ld_rules + code);
+	  ldr = (char *) malloc (strlen (ld_rules) + 1);
+	  strcpy (ldr, ld_rules);
+	}
+      p = getenv ("LD_LIBRARY_PATH");
+      q = 0;
+      if (p)
+	{
+	  cnt++;
+	  for (q = p ; *q != 0; q++)
+	    if (*q == ':')
+	      cnt++;
+	  q = (char *) malloc (strlen (p) + 1);
+	  strcpy (q, p);
+	}
+      l = (char **) malloc ((cnt + 3) * sizeof (char *));
+      pp = l;
+      if (ldr)
+	{
+	  *pp++ = ldr;
+	  for (; *ldr != 0; ldr++) 
+	    if (*ldr == ':')
+	      {
+		*ldr++ = 0;
+		*pp++ = ldr;
+	      }
+	}
+      if (q)
+	{
+	  *pp++ = q;
+	  for (; *q != 0; q++) 
+	    if (*q == ':')
+	      {
+		*q++ = 0;
+		*pp++ = q;
+	      }
+	}
+      /* built in directories are /lib, /usr/lib, and /usr/local/lib */
+      *pp++ = "/lib";
+      *pp++ = "/usr/lib";
+      *pp++ = "/usr/local/lib";
+      *pp = 0;
+    }
+  libname = name;
+  for (pp = l; *pp != 0 ; pp++)
+    {
+      struct direct **namelist;
+      int entries;
+      if ((entries = scandir (*pp, &namelist, libselect, libcompare)) > 0)
+	{
+	  sprintf (buf, "%s/%s", *pp, namelist[entries - 1]->d_name);
+	  add_to_list (&libraries, buf);
+	  if (debug)
+	    fprintf (stderr, "%s\n", buf);
+	  break;
+	}
+    }
+  if (*pp == 0)
+    {
+      if (debug)
+	fprintf (stderr, "not found\n");
+      else
+	fatal ("dynamic dependency %s not found", name);
+    }
+}
+
+/* Scan the _DYNAMIC structure of the output file to find shared libraries
+   that it depends upon and any constructors or destructors they contain.  */
+
+static void 
+scan_libraries (prog_name)
+     char *prog_name;
+{
+  struct exec *header;
+  char *base;
+  struct link_object *lo;
+  char buff[MAXPATHLEN];
+  struct id *list;
+
+  mapfile (prog_name);
+  header = (struct exec *)object;
+  if (N_BADMAG (*header))
+    fatal ("bad magic number in file '%s'", prog_name);
+  if (header->a_dynamic == 0)
+    return;
+
+  code = (char *) (N_TXTOFF (*header) + (long) header);
+  data = (char *) (N_DATOFF (*header) + (long) header);
+  symtab = (struct nlist *) (N_SYMOFF (*header) + (long) header);
+
+  if (header->a_magic == ZMAGIC && header->a_entry == 0x20)
+    {
+      /* shared object */
+      ld = (struct link_dynamic *) (symtab->n_value + code);
+      base = code;
+    }
+  else
+    {
+      /* executable */
+      ld = (struct link_dynamic *) data;
+      base = code-PAGSIZ;
+    }
+
+  if (debug)
+    fprintf (stderr, "dynamic dependencies.\n");
+
+  ld_2 = (struct link_dynamic_2 *) ((long) ld->ld_un.ld_2 + (long)base);
+  for (lo = (struct link_object *) ld_2->ld_need; lo;
+       lo = (struct link_object *) lo->lo_next)
+    {
+      char *name;
+      lo = (struct link_object *) ((long) lo + code);
+      name = (char *) (code + lo->lo_name);
+      if (lo->lo_library)
+	{
+	  if (debug)
+	    fprintf (stderr, "\t-l%s.%d => ", name, lo->lo_major);
+	  sprintf (buff, "lib%s.so.%d.%d", name, lo->lo_major, lo->lo_minor);
+	  locatelib (buff);
+	}
+      else
+	{
+	  if (debug)
+	    fprintf (stderr, "\t%s\n", name);
+	  add_to_list (&libraries, name);
+	}
+    }
+
+  if (debug)
+    fprintf (stderr, "\n");
+
+  /* now iterate through the library list adding their symbols to
+     the list.  */
+  for (list = libraries.first; list; list = list->next)
+    scan_prog_file (list->name, PASS_LIB);
+}
+
+#else  /* SUNOS4_SHARED_LIBRARIES */
+#ifdef LDD_SUFFIX
+
+/* Use the List Dynamic Dependencies program to find shared libraries that
+   the output file depends upon and their initialization/finalization
+   routines, if any.  */
+
+static void 
+scan_libraries (prog_name)
+     char *prog_name;
+{
+  static struct head libraries;		/* list of shared libraries found */
+  struct id *list;
+  void (*int_handler) ();
+  void (*quit_handler) ();
+  char *ldd_argv[4];
+  int pid;
+  int argc = 0;
+  int pipe_fd[2];
+  char buf[1024];
+  FILE *inf;
+
+  /* If we don't have an `ldd', complain.  */
+  if (ldd_file_name == 0)
+    {
+      error ("cannot find `ldd'");
+      return;
+    }
+
+  ldd_argv[argc++] = ldd_file_name;
+  ldd_argv[argc++] = prog_name;
+  ldd_argv[argc++] = (char *) 0;
+
+  if (pipe (pipe_fd) < 0)
+    fatal_perror ("pipe");
+
+  inf = fdopen (pipe_fd[0], "r");
+  if (inf == (FILE *) 0)
+    fatal_perror ("fdopen");
+
+  /* Trace if needed.  */
+  if (vflag)
+    {
+      char **p_argv;
+      char *str;
+
+      for (p_argv = &ldd_argv[0]; (str = *p_argv) != (char *) 0; p_argv++)
+	fprintf (stderr, " %s", str);
+
+      fprintf (stderr, "\n");
+    }
+
+  fflush (stdout);
+  fflush (stderr);
+
+  /* Spawn child ldd on pipe */
+  pid = vfork ();
+  if (pid == -1)
+    {
+#ifdef vfork
+      fatal_perror ("fork");
+#else
+      fatal_perror ("vfork");
+#endif
+    }
+
+  if (pid == 0)			/* child context */
+    {
+      /* setup stdout */
+      if (dup2 (pipe_fd[1], 1) < 0)
+	fatal_perror ("dup2 (%d, 1)", pipe_fd[1]);
+
+      if (close (pipe_fd[0]) < 0)
+	fatal_perror ("close (%d)", pipe_fd[0]);
+
+      if (close (pipe_fd[1]) < 0)
+	fatal_perror ("close (%d)", pipe_fd[1]);
+
+      execv (ldd_file_name, ldd_argv);
+      fatal_perror ("executing %s", ldd_file_name);
+    }
+
+  /* Parent context from here on.  */
+  int_handler  = (void (*) ()) signal (SIGINT,  SIG_IGN);
+#ifdef SIGQUIT
+  quit_handler = (void (*) ()) signal (SIGQUIT, SIG_IGN);
+#endif
+
+  if (close (pipe_fd[1]) < 0)
+    fatal_perror ("close (%d)", pipe_fd[1]);
+
+  if (debug)
+    fprintf (stderr, "\nldd output with constructors/destructors.\n");
+
+  /* Read each line of ldd output.  */
+  while (fgets (buf, sizeof buf, inf) != (char *) 0)
+    {
+      int ch, ch2;
+      char *name, *end, *p = buf;
+
+      /* Extract names of libraries and add to list. */
+      PARSE_LDD_OUTPUT (p);
+      if (p == 0)
+	continue;
+
+      name = p;
+      if (strncmp (name, "not found", sizeof ("not found") - 1) == 0)
+	fatal ("dynamic dependency %s not found", buf);
+
+      /* Find the end of the symbol name. */
+      for (end = p; 
+	   (ch2 = *end) != '\0' && ch2 != '\n' && !isspace (ch2) && ch2 != '|';
+	   end++)
+	continue;
+      *end = '\0';
+
+      if (access (name, R_OK) == 0)
+        add_to_list (&libraries, name);
+      else
+	fatal ("unable to open dynamic dependency '%s'", buf);
+
+      if (debug)
+	fprintf (stderr, "\t%s\n", buf);
+    }
+  if (debug)
+    fprintf (stderr, "\n");
+
+  if (fclose (inf) != 0)
+    fatal_perror ("fclose of pipe");
+
+  do_wait (ldd_file_name);
+
+  signal (SIGINT,  int_handler);
+#ifdef SIGQUIT
+  signal (SIGQUIT, quit_handler);
+#endif
+
+  /* now iterate through the library list adding their symbols to
+     the list.  */
+  for (list = libraries.first; list; list = list->next)
+    scan_prog_file (list->name, PASS_LIB);
+}
+
+#endif /* LDD_SUFFIX */
+#endif /* SUNOS4_SHARED_LIBRARIES */
+
+#endif /* OBJECT_FORMAT_NONE */
+
+
+/*
+ * COFF specific stuff.
+ */
+
+#ifdef OBJECT_FORMAT_COFF
+
+#if defined(EXTENDED_COFF)
+#   define GCC_SYMBOLS(X)	(SYMHEADER(X).isymMax + SYMHEADER(X).iextMax)
+#   define GCC_SYMENT		SYMR
+#   define GCC_OK_SYMBOL(X)	((X).st == stProc && (X).sc == scText)
+#   define GCC_SYMINC(X)	(1)
+#   define GCC_SYMZERO(X)	(SYMHEADER(X).isymMax)
+#   define GCC_CHECK_HDR(X)	(PSYMTAB(X) != 0)
+#else
+#   define GCC_SYMBOLS(X)	(HEADER(ldptr).f_nsyms)
+#   define GCC_SYMENT		SYMENT
+#   define GCC_OK_SYMBOL(X) \
+     (((X).n_sclass == C_EXT) && \
+        (((X).n_type & N_TMASK) == (DT_NON << N_BTSHFT) || \
+         ((X).n_type & N_TMASK) == (DT_FCN << N_BTSHFT)))
+#   define GCC_SYMINC(X)	((X).n_numaux+1)
+#   define GCC_SYMZERO(X)	0
+#   define GCC_CHECK_HDR(X)	(1)
+#endif
+
+extern char *ldgetname ();
+
+/* COFF version to scan the name list of the loaded program for
+   the symbols g++ uses for static constructors and destructors.
+
+   The constructor table begins at __CTOR_LIST__ and contains a count
+   of the number of pointers (or -1 if the constructors are built in a
+   separate section by the linker), followed by the pointers to the
+   constructor functions, terminated with a null pointer.  The
+   destructor table has the same format, and begins at __DTOR_LIST__.  */
+
+static void
+scan_prog_file (prog_name, which_pass)
+     char *prog_name;
+     enum pass which_pass;
+{
+  LDFILE *ldptr = NULL;
+  int sym_index, sym_count;
+
+  if (which_pass != PASS_FIRST && which_pass != PASS_OBJ)
+    return;
+
+  if ((ldptr = ldopen (prog_name, ldptr)) == NULL)
+    fatal ("%s: can't open as COFF file", prog_name);
+      
+  if (!MY_ISCOFF (HEADER (ldptr).f_magic))
+    fatal ("%s: not a COFF file", prog_name);
+
+  if (GCC_CHECK_HDR (ldptr))
+    {
+      sym_count = GCC_SYMBOLS (ldptr);
+      sym_index = GCC_SYMZERO (ldptr);
+      while (sym_index < sym_count)
+	{
+	  GCC_SYMENT symbol;
+
+	  if (ldtbread (ldptr, sym_index, &symbol) <= 0)
+	    break;
+	  sym_index += GCC_SYMINC (symbol);
+
+	  if (GCC_OK_SYMBOL (symbol))
+	    {
+	      char *name;
+
+	      if ((name = ldgetname (ldptr, &symbol)) == NULL)
+		continue;		/* should never happen */
+
+#ifdef XCOFF_DEBUGGING_INFO
+	      /* All AIX function names have a duplicate entry beginning
+		 with a dot. */
+	      if (*name == '.')
+		++name;
+#endif
+
+	      switch (is_ctor_dtor (name))
+		{
+		case 1:
+		  add_to_list (&constructors, name);
+		  if (which_pass == PASS_OBJ)
+		    add_to_list (&exports, name);
+		  break;
+
+		case 2:
+		  add_to_list (&destructors, name);
+		  if (which_pass == PASS_OBJ)
+		    add_to_list (&exports, name);
+		  break;
+
+		default:		/* not a constructor or destructor */
+		  if (which_pass == PASS_OBJ && auto_export)
+		    add_to_list (&exports, name);
+		  continue;
+		}
+
+#if !defined(EXTENDED_COFF)
+	      if (debug)
+		fprintf (stderr, "\tsec=%d class=%d type=%s%o %s\n",
+			 symbol.n_scnum, symbol.n_sclass,
+			 (symbol.n_type ? "0" : ""), symbol.n_type,
+			 name);
+#else
+	      if (debug)
+		fprintf (stderr, "\tiss = %5d, value = %5d, index = %5d, name = %s\n",
+			 symbol.iss, symbol.value, symbol.index, name);
+#endif
+	    }
+	}
+    }
+
+  (void) ldclose(ldptr);
+}
+
+#ifdef XCOFF_SCAN_LIBS
+/* Scan imported AIX libraries for GCC static ctors and dtors.
+   FIXME: it is possible to link an executable without the actual import
+	  library by using an "import file" - a text file listing symbols
+	  exported by a library.  To support this, we would have to scan
+	  import files as well as actual shared binaries to find GCC ctors.
+   TODO: use memory mapping instead of 'ld' routines, files are already
+	 memory mapped, but we could eliminate the extra in-memory copies.
+	 Is it worth the effort?  */
+
+static void
+scan_libraries (prog_name)
+     char *prog_name;
+{
+  LDFILE *ldptr;
+  SCNHDR ldsh;
+  static struct path_prefix libpath; /* we should only do this once */
+
+  if ((ldptr = ldopen (prog_name, ldptr)) == NULL)
+    fatal ("%s: can't open as COFF file", prog_name);
+      
+  if (!MY_ISCOFF (HEADER (ldptr).f_magic))
+    fatal ("%s: not a COFF file", prog_name);
+
+  /* find and read loader section */
+  if (ldnshread (ldptr, _LOADER, &ldsh))
+    {
+      LDHDR ldh;
+      char *impbuf;
+      int idx;
+      FSEEK (ldptr, ldsh.s_scnptr, BEGINNING);
+      FREAD (&ldh, sizeof ldh, 1, ldptr);
+      /* read import library list */
+      impbuf = alloca (ldh.l_istlen);
+      FSEEK (ldptr, ldh.l_impoff + ldsh.s_scnptr, BEGINNING);
+      FREAD (impbuf, ldh.l_istlen, 1, ldptr);
+      idx = strlen (impbuf) + 1;
+      idx += strlen (impbuf+idx) + 1;
+      if (debug)
+	fprintf (stderr, "LIBPATH=%s\n", impbuf);
+      prefix_from_string (impbuf, &libpath);
+      while (idx < ldh.l_istlen)
+	{
+	  char *implib = impbuf + idx;
+	  char *impmem = implib + strlen (implib) + 1;
+	  char *soname = 0;
+	  LDFILE *libptr = NULL;
+	  struct prefix_list *pl;
+	  ARCHDR ah;
+	  idx += strlen (implib) + 1;
+	  if (!implib[0])
+	    continue;
+	  idx += strlen (impmem) + 1;
+	  if (*implib == '/')
+	    {
+	      if (access (soname, R_OK) == 0)
+		soname = implib;
+	    }
+	  else
+	    {
+	      char *temp = alloca (libpath.max_len + strlen (implib) + 1);
+	      for (pl = libpath.plist; pl; pl = pl->next)
+		{
+		  strcpy (temp, pl->prefix);
+		  strcat (temp, implib);
+		  if (access (temp, R_OK) == 0)
+		    {
+		      soname = temp;
+		      break;
+		    }
+		}
+	    }
+	  if (!soname)
+	    {
+	      fatal ("%s: library not found", implib);
+	      continue;
+	    }
+	  if (debug)
+	    {
+	      if (impmem[0])
+		fprintf (stderr, "%s (%s)\n", soname, impmem);
+	      else
+		fprintf (stderr, "%s\n", soname);
+	    }
+	  ah.ar_name[0] = 0;
+	  do
+	    {
+	      /* scan imported shared objects for GCC GLOBAL ctors */
+	      short type;
+	      if ((libptr = ldopen (soname, libptr)) == NULL)
+		fatal ("%s: can't open import library", soname);
+	      if (TYPE (libptr) == ARTYPE)
+		{
+		  LDFILE *memptr;
+		  if (!impmem[0])
+		    fatal ("%s: no archive member specified", soname);
+		  ldahread (libptr, &ah);
+		  if (strcmp (ah.ar_name, impmem))
+		    continue;
+		}
+	      type = HEADER (libptr).f_magic;
+	      if (HEADER (libptr).f_flags & F_SHROBJ)
+		{
+		  SCNHDR soldsh;
+		  LDHDR soldh;
+		  long symcnt, i;
+		  char *ldstrings;
+		  LDSYM *lsyms;
+		  if (!ldnshread (libptr, _LOADER, &soldsh))
+		    fatal ("%s: not an import library", soname);
+		  FSEEK (libptr, soldsh.s_scnptr, BEGINNING);
+		  if (FREAD (&soldh, sizeof soldh, 1, libptr) != 1)
+		    fatal ("%s: can't read loader section", soname);
+		  /*fprintf (stderr, "\tscanning %s\n", soname);*/
+		  symcnt = soldh.l_nsyms;
+		  lsyms = (LDSYM*) alloca (symcnt * sizeof *lsyms);
+		  symcnt = FREAD (lsyms, sizeof *lsyms, symcnt, libptr);
+		  ldstrings = alloca (soldh.l_stlen);
+		  FSEEK (libptr, soldsh.s_scnptr+soldh.l_stoff, BEGINNING);
+		  FREAD (ldstrings, soldh.l_stlen, 1, libptr);
+		  for (i = 0; i < symcnt; ++i)
+		    {
+		      LDSYM *l = lsyms + i;
+		      if (LDR_EXPORT (*l))
+			{
+			  char *expname = 0;
+			  if (l->l_zeroes)
+			    expname = l->l_name;
+			  else if (l->l_offset < soldh.l_stlen)
+			    expname = ldstrings + l->l_offset;
+			  switch (is_ctor_dtor (expname))
+			    {
+			    case 3:
+			      if (debug)
+				fprintf (stderr, "\t%s\n", expname);
+			      add_to_list (&constructors, expname);
+			      break;
+
+			    case 4:
+			      add_to_list (&destructors, expname);
+			      break;
+
+			    default: /* not a constructor or destructor */
+			      continue;
+			    }
+			}
+		    }
+		}
+	      else
+		fprintf (stderr, "%s: type = %04X flags = %04X\n", 
+			 ah.ar_name, type, HEADER (libptr).f_flags);
+	    }
+	  while (ldclose (libptr) == FAILURE);
+	  /* printf (stderr, "closed %s\n", soname); */
+	}
+    }
+}
+#endif /* XCOFF_SCAN_LIBS */
+
+#endif /* OBJECT_FORMAT_COFF */
+
+
+/*
+ * OSF/rose specific stuff.
+ */
+
+#ifdef OBJECT_FORMAT_ROSE
+
+/* Union of the various load commands */
+
+typedef union load_union
+{
+  ldc_header_t			hdr;	/* common header */
+  load_cmd_map_command_t	map;	/* map indexing other load cmds */
+  interpreter_command_t		iprtr;	/* interpreter pathname */
+  strings_command_t		str;	/* load commands strings section */
+  region_command_t		region;	/* region load command */
+  reloc_command_t		reloc;	/* relocation section */
+  package_command_t		pkg;	/* package load command */
+  symbols_command_t		sym;	/* symbol sections */
+  entry_command_t		ent;	/* program start section */
+  gen_info_command_t		info;	/* object information */
+  func_table_command_t		func;	/* function constructors/destructors */
+} load_union_t;
+
+/* Structure to point to load command and data section in memory.  */
+
+typedef struct load_all
+{
+  load_union_t *load;			/* load command */
+  char *section;			/* pointer to section */
+} load_all_t;
+
+/* Structure to contain information about a file mapped into memory.  */
+
+struct file_info
+{
+  char *start;				/* start of map */
+  char *name;				/* filename */
+  long	size;				/* size of the file */
+  long  rounded_size;			/* size rounded to page boundary */
+  int	fd;				/* file descriptor */
+  int	rw;				/* != 0 if opened read/write */
+  int	use_mmap;			/* != 0 if mmap'ed */
+};
+
+extern int decode_mach_o_hdr ();
+extern int encode_mach_o_hdr ();
+
+static void add_func_table	PROTO((mo_header_t *, load_all_t *,
+				       symbol_info_t *, int));
+static void print_header	PROTO((mo_header_t *));
+static void print_load_command	PROTO((load_union_t*, size_t, int));
+static void bad_header		PROTO((int));
+static struct file_info	*read_file  PROTO((char *, int, int));
+static void end_file		PROTO((struct file_info *));
+
+/* OSF/rose specific version to scan the name list of the loaded
+   program for the symbols g++ uses for static constructors and
+   destructors.
+
+   The constructor table begins at __CTOR_LIST__ and contains a count
+   of the number of pointers (or -1 if the constructors are built in a
+   separate section by the linker), followed by the pointers to the
+   constructor functions, terminated with a null pointer.  The
+   destructor table has the same format, and begins at __DTOR_LIST__.  */
+
+static void
+scan_prog_file (prog_name, which_pass)
+     char *prog_name;
+     enum pass which_pass;
+{
+  char *obj;
+  mo_header_t hdr;
+  load_all_t *load_array;
+  load_all_t *load_end;
+  load_all_t *load_cmd;
+  int symbol_load_cmds;
+  off_t offset;
+  int i;
+  int num_syms;
+  int status;
+  char *str_sect;
+  struct file_info *obj_file;
+  int prog_fd;
+  mo_lcid_t cmd_strings	  = -1;
+  symbol_info_t *main_sym = 0;
+  int rw		  = (which_pass != PASS_FIRST);
+
+  prog_fd = open (prog_name, (rw) ? O_RDWR : O_RDONLY);
+  if (prog_fd < 0)
+    fatal_perror ("can't read %s", prog_name);
+
+  obj_file = read_file (prog_name, prog_fd, rw);
+  obj = obj_file->start;
+
+  status = decode_mach_o_hdr (obj, MO_SIZEOF_RAW_HDR, MOH_HEADER_VERSION, &hdr);
+  if (status != MO_HDR_CONV_SUCCESS)
+    bad_header (status);
+
+
+  /* Do some basic sanity checks.  Note we explicitly use the big endian magic number,
+     since the hardware will automatically swap bytes for us on loading little endian
+     integers.  */
+
+#ifndef CROSS_COMPILE
+  if (hdr.moh_magic != MOH_MAGIC_MSB
+      || hdr.moh_header_version != MOH_HEADER_VERSION
+      || hdr.moh_byte_order != OUR_BYTE_ORDER
+      || hdr.moh_data_rep_id != OUR_DATA_REP_ID
+      || hdr.moh_cpu_type != OUR_CPU_TYPE
+      || hdr.moh_cpu_subtype != OUR_CPU_SUBTYPE
+      || hdr.moh_vendor_type != OUR_VENDOR_TYPE)
+    {
+      fatal ("incompatibilities between object file & expected values");
+    }
+#endif
+
+  if (debug)
+    print_header (&hdr);
+
+  offset = hdr.moh_first_cmd_off;
+  load_end = load_array
+    = (load_all_t *) xcalloc (sizeof (load_all_t), hdr.moh_n_load_cmds + 2);
+
+  /* Build array of load commands, calculating the offsets */
+  for (i = 0; i < hdr.moh_n_load_cmds; i++)
+    {
+      load_union_t *load_hdr;		/* load command header */
+
+      load_cmd = load_end++;
+      load_hdr = (load_union_t *) (obj + offset);
+
+      /* If modifying the program file, copy the header.  */
+      if (rw)
+	{
+	  load_union_t *ptr = (load_union_t *) xmalloc (load_hdr->hdr.ldci_cmd_size);
+	  bcopy ((char *)load_hdr, (char *)ptr, load_hdr->hdr.ldci_cmd_size);
+	  load_hdr = ptr;
+
+	  /* null out old command map, because we will rewrite at the end.  */
+	  if (ptr->hdr.ldci_cmd_type == LDC_CMD_MAP)
+	    {
+	      cmd_strings = ptr->map.lcm_ld_cmd_strings;
+	      ptr->hdr.ldci_cmd_type = LDC_UNDEFINED;
+	    }
+	}
+
+      load_cmd->load = load_hdr;
+      if (load_hdr->hdr.ldci_section_off > 0)
+	load_cmd->section = obj + load_hdr->hdr.ldci_section_off;
+
+      if (debug)
+	print_load_command (load_hdr, offset, i);
+
+      offset += load_hdr->hdr.ldci_cmd_size;
+    }
+
+  /* If the last command is the load command map and is not undefined,
+     decrement the count of load commands.  */
+  if (rw && load_end[-1].load->hdr.ldci_cmd_type == LDC_UNDEFINED)
+    {
+      load_end--;
+      hdr.moh_n_load_cmds--;
+    }
+
+  /* Go through and process each symbol table section.  */
+  symbol_load_cmds = 0;
+  for (load_cmd = load_array; load_cmd < load_end; load_cmd++)
+    {
+      load_union_t *load_hdr = load_cmd->load;
+
+      if (load_hdr->hdr.ldci_cmd_type == LDC_SYMBOLS)
+	{
+	  symbol_load_cmds++;
+
+	  if (debug)
+	    {
+	      char *kind = "unknown";
+
+	      switch (load_hdr->sym.symc_kind)
+		{
+		case SYMC_IMPORTS:	   kind = "imports"; break;
+		case SYMC_DEFINED_SYMBOLS: kind = "defined"; break;
+		case SYMC_STABS:	   kind = "stabs";   break;
+		}
+
+	      fprintf (stderr, "\nProcessing symbol table #%d, offset = 0x%.8lx, kind = %s\n",
+		       symbol_load_cmds, load_hdr->hdr.ldci_section_off, kind);
+	    }
+
+	  if (load_hdr->sym.symc_kind != SYMC_DEFINED_SYMBOLS)
+	    continue;
+
+	  str_sect = load_array[load_hdr->sym.symc_strings_section].section;
+	  if (str_sect == (char *)0)
+	    fatal ("string section missing");
+
+	  if (load_cmd->section == (char *)0)
+	    fatal ("section pointer missing");
+
+	  num_syms = load_hdr->sym.symc_nentries;
+	  for (i = 0; i < num_syms; i++)
+	    {
+	      symbol_info_t *sym = ((symbol_info_t *) load_cmd->section) + i;
+	      char *name = sym->si_name.symbol_name + str_sect;
+
+	      if (name[0] != '_')
+		continue;
+
+	      if (rw)
+		{
+		  char *n = name + strlen (name) - strlen (NAME__MAIN);
+
+		  if ((n - name) < 0 || strcmp (n, NAME__MAIN))
+		    continue;
+		  while (n != name)
+		    if (*--n != '_')
+		      continue;
+
+		  main_sym = sym;
+		}
+	      else
+		{
+		  switch (is_ctor_dtor (name))
+		    {
+		    case 1:
+		      add_to_list (&constructors, name);
+		      break;
+
+		    case 2:
+		      add_to_list (&destructors, name);
+		      break;
+
+		    default:	/* not a constructor or destructor */
+		      continue;
+		    }
+		}
+
+	      if (debug)
+		fprintf (stderr, "\ttype = 0x%.4x, sc = 0x%.2x, flags = 0x%.8x, name = %.30s\n",
+			 sym->si_type, sym->si_sc_type, sym->si_flags, name);
+	    }
+	}
+    }
+
+  if (symbol_load_cmds == 0)
+    fatal ("no symbol table found");
+
+  /* Update the program file now, rewrite header and load commands.  At present,
+     we assume that there is enough space after the last load command to insert
+     one more.  Since the first section written out is page aligned, and the
+     number of load commands is small, this is ok for the present.  */
+
+  if (rw)
+    {
+      load_union_t *load_map;
+      size_t size;
+
+      if (cmd_strings == -1)
+	fatal ("no cmd_strings found");
+
+      /* Add __main to initializer list.
+	 If we are building a program instead of a shared library, don't
+	 do anything, since in the current version, you cannot do mallocs
+	 and such in the constructors.  */
+
+      if (main_sym != (symbol_info_t *)0
+	  && ((hdr.moh_flags & MOH_EXECABLE_F) == 0))
+	add_func_table (&hdr, load_array, main_sym, FNTC_INITIALIZATION);
+
+      if (debug)
+	fprintf (stderr, "\nUpdating header and load commands.\n\n");
+
+      hdr.moh_n_load_cmds++;
+      size = sizeof (load_cmd_map_command_t) + (sizeof (mo_offset_t) * (hdr.moh_n_load_cmds - 1));
+
+      /* Create new load command map.  */
+      if (debug)
+	fprintf (stderr, "load command map, %d cmds, new size %ld.\n",
+		 (int)hdr.moh_n_load_cmds, (long)size);
+
+      load_map = (load_union_t *) xcalloc (1, size);
+      load_map->map.ldc_header.ldci_cmd_type = LDC_CMD_MAP;
+      load_map->map.ldc_header.ldci_cmd_size = size;
+      load_map->map.lcm_ld_cmd_strings = cmd_strings;
+      load_map->map.lcm_nentries = hdr.moh_n_load_cmds;
+      load_array[hdr.moh_n_load_cmds-1].load = load_map;
+
+      offset = hdr.moh_first_cmd_off;
+      for (i = 0; i < hdr.moh_n_load_cmds; i++)
+	{
+	  load_map->map.lcm_map[i] = offset;
+	  if (load_array[i].load->hdr.ldci_cmd_type == LDC_CMD_MAP)
+	    hdr.moh_load_map_cmd_off = offset;
+
+	  offset += load_array[i].load->hdr.ldci_cmd_size;
+	}
+
+      hdr.moh_sizeofcmds = offset - MO_SIZEOF_RAW_HDR;
+
+      if (debug)
+	print_header (&hdr);
+
+      /* Write header */
+      status = encode_mach_o_hdr (&hdr, obj, MO_SIZEOF_RAW_HDR);
+      if (status != MO_HDR_CONV_SUCCESS)
+	bad_header (status);
+
+      if (debug)
+	fprintf (stderr, "writing load commands.\n\n");
+
+      /* Write load commands */
+      offset = hdr.moh_first_cmd_off;
+      for (i = 0; i < hdr.moh_n_load_cmds; i++)
+	{
+	  load_union_t *load_hdr = load_array[i].load;
+	  size_t size = load_hdr->hdr.ldci_cmd_size;
+
+	  if (debug)
+	    print_load_command (load_hdr, offset, i);
+
+	  bcopy ((char *)load_hdr, (char *)(obj + offset), size);
+	  offset += size;
+	}
+    }
+
+  end_file (obj_file);
+
+  if (close (prog_fd))
+    fatal_perror ("closing %s", prog_name);
+
+  if (debug)
+    fprintf (stderr, "\n");
+}
+
+
+/* Add a function table to the load commands to call a function
+   on initiation or termination of the process.  */
+
+static void
+add_func_table (hdr_p, load_array, sym, type)
+     mo_header_t *hdr_p;		/* pointer to global header */
+     load_all_t *load_array;		/* array of ptrs to load cmds */
+     symbol_info_t *sym;		/* pointer to symbol entry */
+     int type;				/* fntc_type value */
+{
+  /* Add a new load command.  */
+  int num_cmds = ++hdr_p->moh_n_load_cmds;
+  int load_index = num_cmds - 1;
+  size_t size = sizeof (func_table_command_t) + sizeof (mo_addr_t);
+  load_union_t *ptr = xcalloc (1, size);
+  load_all_t *load_cmd;
+  int i;
+
+  /* Set the unresolved address bit in the header to force the loader to be
+     used, since kernel exec does not call the initialization functions.  */
+  hdr_p->moh_flags |= MOH_UNRESOLVED_F;
+
+  load_cmd = &load_array[load_index];
+  load_cmd->load = ptr;
+  load_cmd->section = (char *)0;
+
+  /* Fill in func table load command.  */
+  ptr->func.ldc_header.ldci_cmd_type = LDC_FUNC_TABLE;
+  ptr->func.ldc_header.ldci_cmd_size = size;
+  ptr->func.ldc_header.ldci_section_off = 0;
+  ptr->func.ldc_header.ldci_section_len = 0;
+  ptr->func.fntc_type = type;
+  ptr->func.fntc_nentries = 1;
+
+  /* copy address, turn it from abs. address to (region,offset) if necessary.  */
+  /* Is the symbol already expressed as (region, offset)?  */
+  if ((sym->si_flags & SI_ABSOLUTE_VALUE_F) == 0)
+    {
+      ptr->func.fntc_entry_loc[i].adr_lcid = sym->si_value.def_val.adr_lcid;
+      ptr->func.fntc_entry_loc[i].adr_sctoff = sym->si_value.def_val.adr_sctoff;
+    }
+
+  /* If not, figure out which region it's in.  */
+  else
+    {
+      mo_vm_addr_t addr = sym->si_value.abs_val;
+      int found = 0;
+
+      for (i = 0; i < load_index; i++)
+	{
+	  if (load_array[i].load->hdr.ldci_cmd_type == LDC_REGION)
+	    {
+	      region_command_t *region_ptr = &load_array[i].load->region;
+
+	      if ((region_ptr->regc_flags & REG_ABS_ADDR_F) != 0
+		  && addr >= region_ptr->regc_addr.vm_addr
+		  && addr <= region_ptr->regc_addr.vm_addr + region_ptr->regc_vm_size)
+		{
+		  ptr->func.fntc_entry_loc[0].adr_lcid = i;
+		  ptr->func.fntc_entry_loc[0].adr_sctoff = addr - region_ptr->regc_addr.vm_addr;
+		  found++;
+		  break;
+		}
+	    }
+	}
+
+      if (!found)
+	fatal ("could not convert 0x%l.8x into a region", addr);
+    }
+
+  if (debug)
+    fprintf (stderr,
+	     "%s function, region %d, offset = %ld (0x%.8lx)\n",
+	     (type == FNTC_INITIALIZATION) ? "init" : "term",
+	     (int)ptr->func.fntc_entry_loc[i].adr_lcid,
+	     (long)ptr->func.fntc_entry_loc[i].adr_sctoff,
+	     (long)ptr->func.fntc_entry_loc[i].adr_sctoff);
+
+}
+
+
+/* Print the global header for an OSF/rose object.  */
+
+static void
+print_header (hdr_ptr)
+     mo_header_t *hdr_ptr;
+{
+  fprintf (stderr, "\nglobal header:\n");
+  fprintf (stderr, "\tmoh_magic            = 0x%.8lx\n", hdr_ptr->moh_magic);
+  fprintf (stderr, "\tmoh_major_version    = %d\n", (int)hdr_ptr->moh_major_version);
+  fprintf (stderr, "\tmoh_minor_version    = %d\n", (int)hdr_ptr->moh_minor_version);
+  fprintf (stderr, "\tmoh_header_version   = %d\n", (int)hdr_ptr->moh_header_version);
+  fprintf (stderr, "\tmoh_max_page_size    = %d\n", (int)hdr_ptr->moh_max_page_size);
+  fprintf (stderr, "\tmoh_byte_order       = %d\n", (int)hdr_ptr->moh_byte_order);
+  fprintf (stderr, "\tmoh_data_rep_id      = %d\n", (int)hdr_ptr->moh_data_rep_id);
+  fprintf (stderr, "\tmoh_cpu_type         = %d\n", (int)hdr_ptr->moh_cpu_type);
+  fprintf (stderr, "\tmoh_cpu_subtype      = %d\n", (int)hdr_ptr->moh_cpu_subtype);
+  fprintf (stderr, "\tmoh_vendor_type      = %d\n", (int)hdr_ptr->moh_vendor_type);
+  fprintf (stderr, "\tmoh_load_map_cmd_off = %d\n", (int)hdr_ptr->moh_load_map_cmd_off);
+  fprintf (stderr, "\tmoh_first_cmd_off    = %d\n", (int)hdr_ptr->moh_first_cmd_off);
+  fprintf (stderr, "\tmoh_sizeofcmds       = %d\n", (int)hdr_ptr->moh_sizeofcmds);
+  fprintf (stderr, "\tmon_n_load_cmds      = %d\n", (int)hdr_ptr->moh_n_load_cmds);
+  fprintf (stderr, "\tmoh_flags            = 0x%.8lx", (long)hdr_ptr->moh_flags);
+
+  if (hdr_ptr->moh_flags & MOH_RELOCATABLE_F)
+    fprintf (stderr, ", relocatable");
+
+  if (hdr_ptr->moh_flags & MOH_LINKABLE_F)
+    fprintf (stderr, ", linkable");
+
+  if (hdr_ptr->moh_flags & MOH_EXECABLE_F)
+    fprintf (stderr, ", execable");
+
+  if (hdr_ptr->moh_flags & MOH_EXECUTABLE_F)
+    fprintf (stderr, ", executable");
+
+  if (hdr_ptr->moh_flags & MOH_UNRESOLVED_F)
+    fprintf (stderr, ", unresolved");
+
+  fprintf (stderr, "\n\n");
+  return;
+}
+
+
+/* Print a short summary of a load command.  */
+
+static void
+print_load_command (load_hdr, offset, number)
+     load_union_t *load_hdr;
+     size_t offset;
+     int number;
+{
+  mo_long_t type = load_hdr->hdr.ldci_cmd_type;
+  char *type_str = (char *)0;
+
+  switch (type)
+    {
+    case LDC_UNDEFINED:   type_str = "UNDEFINED";	break;
+    case LDC_CMD_MAP:	  type_str = "CMD_MAP";		break;
+    case LDC_INTERPRETER: type_str = "INTERPRETER";	break;
+    case LDC_STRINGS:	  type_str = "STRINGS";		break;
+    case LDC_REGION:	  type_str = "REGION";		break;
+    case LDC_RELOC:	  type_str = "RELOC";		break;
+    case LDC_PACKAGE:	  type_str = "PACKAGE";		break;
+    case LDC_SYMBOLS:	  type_str = "SYMBOLS";		break;
+    case LDC_ENTRY:	  type_str = "ENTRY";		break;
+    case LDC_FUNC_TABLE:  type_str = "FUNC_TABLE";	break;
+    case LDC_GEN_INFO:	  type_str = "GEN_INFO";	break;
+    }
+
+  fprintf (stderr,
+	   "cmd %2d, sz: 0x%.2lx, coff: 0x%.3lx, doff: 0x%.6lx, dlen: 0x%.6lx",
+	   number,
+	   (long) load_hdr->hdr.ldci_cmd_size,
+	   (long) offset,
+	   (long) load_hdr->hdr.ldci_section_off,
+	   (long) load_hdr->hdr.ldci_section_len);
+
+  if (type_str == (char *)0)
+    fprintf (stderr, ", ty: unknown (%ld)\n", (long) type);
+
+  else if (type != LDC_REGION)
+    fprintf (stderr, ", ty: %s\n", type_str);
+
+  else
+    {
+      char *region = "";
+      switch (load_hdr->region.regc_usage_type)
+	{
+	case REG_TEXT_T:	region = ", .text";	break;
+	case REG_DATA_T:	region = ", .data";	break;
+	case REG_BSS_T:		region = ", .bss";	break;
+	case REG_GLUE_T:	region = ", .glue";	break;
+#if defined (REG_RDATA_T) && defined (REG_SDATA_T) && defined (REG_SBSS_T) /*mips*/
+	case REG_RDATA_T:	region = ", .rdata";	break;
+	case REG_SDATA_T:	region = ", .sdata";	break;
+	case REG_SBSS_T:	region = ", .sbss";	break;
+#endif
+	}
+
+      fprintf (stderr, ", ty: %s, vaddr: 0x%.8lx, vlen: 0x%.6lx%s\n",
+	       type_str,
+	       (long) load_hdr->region.regc_vm_addr,
+	       (long) load_hdr->region.regc_vm_size,
+	       region);
+    }
+
+  return;
+}
+
+
+/* Fatal error when {en,de}code_mach_o_header fails.  */
+
+static void
+bad_header (status)
+     int status;
+{
+  char *msg = (char *)0;
+
+  switch (status)
+    {
+    case MO_ERROR_BAD_MAGIC:		msg = "bad magic number";		break;
+    case MO_ERROR_BAD_HDR_VERS:		msg = "bad header version";		break;
+    case MO_ERROR_BAD_RAW_HDR_VERS:	msg = "bad raw header version";		break;
+    case MO_ERROR_BUF2SML:		msg = "raw header buffer too small";	break;
+    case MO_ERROR_OLD_RAW_HDR_FILE:	msg = "old raw header file";		break;
+    case MO_ERROR_UNSUPPORTED_VERS:	msg = "unsupported version";		break;
+    }
+
+  if (msg == (char *)0)
+    fatal ("unknown {de,en}code_mach_o_hdr return value %d", status);
+  else
+    fatal ("%s", msg);
+}
+
+
+/* Read a file into a memory buffer.  */
+
+static struct file_info *
+read_file (name, fd, rw)
+     char *name;		/* filename */
+     int fd;			/* file descriptor */
+     int rw;			/* read/write */
+{
+  struct stat stat_pkt;
+  struct file_info *p = (struct file_info *) xcalloc (sizeof (struct file_info), 1);
+#ifdef USE_MMAP
+  static int page_size;
+#endif
+
+  if (fstat (fd, &stat_pkt) < 0)
+    fatal_perror ("fstat %s", name);
+
+  p->name	  = name;
+  p->size	  = stat_pkt.st_size;
+  p->rounded_size = stat_pkt.st_size;
+  p->fd		  = fd;
+  p->rw		  = rw;
+
+#ifdef USE_MMAP
+  if (debug)
+    fprintf (stderr, "mmap %s, %s\n", name, (rw) ? "read/write" : "read-only");
+
+  if (page_size == 0)
+    page_size = sysconf (_SC_PAGE_SIZE);
+
+  p->rounded_size = ((p->size + page_size - 1) / page_size) * page_size;
+  p->start = mmap ((caddr_t)0,
+		   (rw) ? p->rounded_size : p->size,
+		   (rw) ? (PROT_READ | PROT_WRITE) : PROT_READ,
+		   MAP_FILE | MAP_VARIABLE | MAP_SHARED,
+		   fd,
+		   0L);
+
+  if (p->start != (char *)0 && p->start != (char *)-1)
+    p->use_mmap = 1;
+
+  else
+#endif /* USE_MMAP */
+    {
+      long len;
+
+      if (debug)
+	fprintf (stderr, "read %s\n", name);
+
+      p->use_mmap = 0;
+      p->start = xmalloc (p->size);
+      if (lseek (fd, 0L, SEEK_SET) < 0)
+	fatal_perror ("lseek to 0 on %s", name);
+
+      len = read (fd, p->start, p->size);
+      if (len < 0)
+	fatal_perror ("read %s", name);
+
+      if (len != p->size)
+	fatal ("read %ld bytes, expected %ld, from %s", len, p->size, name);
+    }
+
+  return p;
+}
+
+/* Do anything necessary to write a file back from memory.  */
+
+static void
+end_file (ptr)
+     struct file_info *ptr;	/* file information block */
+{
+#ifdef USE_MMAP
+  if (ptr->use_mmap)
+    {
+      if (ptr->rw)
+	{
+	  if (debug)
+	    fprintf (stderr, "msync %s\n", ptr->name);
+
+	  if (msync (ptr->start, ptr->rounded_size, MS_ASYNC))
+	    fatal_perror ("msync %s", ptr->name);
+	}
+
+      if (debug)
+	fprintf (stderr, "munmap %s\n", ptr->name);
+
+      if (munmap (ptr->start, ptr->size))
+	fatal_perror ("munmap %s", ptr->name);
+    }
+  else
+#endif /* USE_MMAP */
+    {
+      if (ptr->rw)
+	{
+	  long len;
+
+	  if (debug)
+	    fprintf (stderr, "write %s\n", ptr->name);
+
+	  if (lseek (ptr->fd, 0L, SEEK_SET) < 0)
+	    fatal_perror ("lseek to 0 on %s", ptr->name);
+
+	  len = write (ptr->fd, ptr->start, ptr->size);
+	  if (len < 0)
+	    fatal_perror ("write %s", ptr->name);
+
+	  if (len != ptr->size)
+	    fatal ("wrote %ld bytes, expected %ld, to %s", len, ptr->size, ptr->name);
+	}
+
+      free (ptr->start);
+    }
+
+  free (ptr);
+}
+
+#endif /* OBJECT_FORMAT_ROSE */