[GCC 4.8] Initial check-in of GCC 4.8.0

Change-Id: I0719d8a6d0f69b367a6ab6f10eb75622dbf12771

1 files changed, 3113 insertions, 0 deletions

diff --git a/gcc-4.8/gcc/collect2.c b/gcc-4.8/gcc/collect2.c
new file mode 100644
index 000000000..99dd41dc1
--- /dev/null
+++ b/gcc-4.8/gcc/collect2.c
@@ -0,0 +1,3113 @@
+/* Collect static initialization info into data structures that can be
+   traversed by C++ initialization and finalization routines.
+   Copyright (C) 1992-2013 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 GCC.
+
+GCC 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 3, or (at your option) any later
+version.
+
+GCC 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 GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */
+
+
+/* Build tables of static constructors and destructors and run ld.  */
+
+#include "config.h"
+#include "system.h"
+#include "coretypes.h"
+#include "tm.h"
+#include "filenames.h"
+#include "file-find.h"
+
+/* TARGET_64BIT may be defined to use driver specific functionality. */
+#undef TARGET_64BIT
+#define TARGET_64BIT TARGET_64BIT_DEFAULT
+
+#ifndef LIBRARY_PATH_ENV
+#define LIBRARY_PATH_ENV "LIBRARY_PATH"
+#endif
+
+#define COLLECT
+
+#include "collect2.h"
+#include "collect2-aix.h"
+#include "diagnostic.h"
+#include "demangle.h"
+#include "obstack.h"
+#include "intl.h"
+#include "version.h"
+
+/* 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 are not correct for a cross-compiler; we have to hope that
+   cross-versions are in the proper directories.  */
+
+#ifdef CROSS_DIRECTORY_STRUCTURE
+#ifndef CROSS_AIX_SUPPORT
+#undef OBJECT_FORMAT_COFF
+#endif
+#undef MD_EXEC_PREFIX
+#undef REAL_LD_FILE_NAME
+#undef REAL_NM_FILE_NAME
+#undef REAL_STRIP_FILE_NAME
+#endif
+
+/* If we cannot 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 is not quite as unpleasant as special headers.  */
+
+#if !defined (OBJECT_FORMAT_COFF)
+#define OBJECT_FORMAT_NONE
+#endif
+
+#ifdef OBJECT_FORMAT_COFF
+
+#ifndef CROSS_DIRECTORY_STRUCTURE
+#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>
+#endif
+
+/* 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
+
+#endif /* OBJECT_FORMAT_COFF */
+
+#ifdef OBJECT_FORMAT_NONE
+
+/* Default flags to pass to nm.  */
+#ifndef NM_FLAGS
+#define NM_FLAGS "-n"
+#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.  */
+#ifndef NAME__MAIN
+#define NAME__MAIN "__main"
+#endif
+
+/* This must match tree.h.  */
+#define DEFAULT_INIT_PRIORITY 65535
+
+#ifndef COLLECT_SHARED_INIT_FUNC
+#define COLLECT_SHARED_INIT_FUNC(STREAM, FUNC) \
+  fprintf ((STREAM), "void _GLOBAL__DI() {\n\t%s();\n}\n", (FUNC))
+#endif
+#ifndef COLLECT_SHARED_FINI_FUNC
+#define COLLECT_SHARED_FINI_FUNC(STREAM, FUNC) \
+  fprintf ((STREAM), "void _GLOBAL__DD() {\n\t%s();\n}\n", (FUNC))
+#endif
+
+#ifdef LDD_SUFFIX
+#define SCAN_LIBRARIES
+#endif
+
+#ifndef SHLIB_SUFFIX
+#define SHLIB_SUFFIX ".so"
+#endif
+
+#ifdef USE_COLLECT2
+int do_collecting = 1;
+#else
+int do_collecting = 0;
+#endif
+
+/* Cook up an always defined indication of whether we proceed the
+   "EXPORT_LIST" way.  */
+
+#ifdef COLLECT_EXPORT_LIST
+#define DO_COLLECT_EXPORT_LIST 1
+#else
+#define DO_COLLECT_EXPORT_LIST 0
+#endif
+
+/* Nonzero if we should suppress the automatic demangling of identifiers
+   in linker error messages.  Set from COLLECT_NO_DEMANGLE.  */
+int no_demangle;
+
+/* 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;
+};
+
+bool vflag;				/* true if -v or --version */ 
+static int rflag;			/* true if -r */
+static int strip_flag;			/* true if -s */
+#ifdef COLLECT_EXPORT_LIST
+static int export_flag;                 /* true if -bE */
+static int aix64_flag;			/* true if -b64 */
+static int aixrtl_flag;			/* true if -brtl */
+#endif
+
+enum lto_mode_d {
+  LTO_MODE_NONE,			/* Not doing LTO.  */
+  LTO_MODE_LTO,				/* Normal LTO.  */
+  LTO_MODE_WHOPR			/* WHOPR.  */
+};
+
+/* Current LTO mode.  */
+static enum lto_mode_d lto_mode = LTO_MODE_NONE;
+
+bool debug;				/* true if -debug */
+bool helpflag;			/* true if --help */
+
+static int shared_obj;			/* true if -shared */
+
+static const char *c_file;		/* <xxx>.c for constructor/destructor list.  */
+static const char *o_file;		/* <xxx>.o for constructor/destructor list.  */
+#ifdef COLLECT_EXPORT_LIST
+static const char *export_file;		/* <xxx>.x for AIX export list.  */
+#endif
+static char **lto_o_files;		/* Output files for LTO.  */
+const char *ldout;			/* File for ld stdout.  */
+const char *lderrout;			/* File for ld stderr.  */
+static const char *output_file;		/* Output file for ld.  */
+static const char *nm_file_name;	/* pathname of nm */
+#ifdef LDD_SUFFIX
+static const char *ldd_file_name;	/* pathname of ldd (or equivalent) */
+#endif
+static const char *strip_file_name;		/* pathname of strip */
+const 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 */
+#ifdef COLLECT_EXPORT_LIST
+static struct head exports;		/* list of exported symbols */
+#endif
+static struct head frame_tables;	/* list of frame unwind info tables */
+
+static bool at_file_supplied;		/* Whether to use @file arguments */
+static char *response_file;		/* Name of any current response file */
+
+struct obstack temporary_obstack;
+char * temporary_firstobj;
+
+/* A string that must be prepended to a target OS path in order to find
+   it on the host system.  */
+#ifdef TARGET_SYSTEM_ROOT
+static const char *target_system_root = TARGET_SYSTEM_ROOT;
+#else
+static const char *target_system_root = "";
+#endif
+
+/* Whether we may unlink the output file, which should be set as soon as we
+   know we have successfully produced it.  This is typically useful to prevent
+   blindly attempting to unlink a read-only output that the target linker
+   would leave untouched.  */
+bool may_unlink_output_file = false;
+
+#ifdef COLLECT_EXPORT_LIST
+/* Lists to keep libraries to be scanned for global constructors/destructors.  */
+static struct head libs;                    /* list of libraries */
+static struct path_prefix cmdline_lib_dirs; /* directories specified with -L */
+static struct path_prefix libpath_lib_dirs; /* directories in LIBPATH */
+static struct path_prefix *libpaths[3] = {&cmdline_lib_dirs,
+					  &libpath_lib_dirs, NULL};
+#endif
+
+/* List of names of object files containing LTO information.
+   These are a subset of the object file names appearing on the
+   command line, and must be identical, in the sense of pointer
+   equality, with the names passed to maybe_run_lto_and_relink().  */
+
+struct lto_object
+{
+  const char *name;		/* Name of object file.  */
+  struct lto_object *next;	/* Next in linked list.  */
+};
+
+struct lto_object_list
+{
+  struct lto_object *first;	/* First list element.  */
+  struct lto_object *last;	/* Last list element.  */
+};
+
+static struct lto_object_list lto_objects;
+
+/* Special kinds of symbols that a name may denote.  */
+
+typedef enum {
+  SYM_REGULAR = 0,  /* nothing special  */
+
+  SYM_CTOR = 1,  /* constructor */
+  SYM_DTOR = 2,  /* destructor  */
+  SYM_INIT = 3,  /* shared object routine that calls all the ctors  */
+  SYM_FINI = 4,  /* shared object routine that calls all the dtors  */
+  SYM_DWEH = 5   /* DWARF exception handling table  */
+} symkind;
+
+static symkind is_ctor_dtor (const char *);
+
+static void handler (int);
+static void do_wait (const char *, struct pex_obj *);
+static void fork_execute (const char *, char **);
+static void maybe_unlink (const char *);
+static void maybe_unlink_list (char **);
+static void add_to_list (struct head *, const char *);
+static int extract_init_priority (const char *);
+static void sort_ids (struct head *);
+static void write_list (FILE *, const char *, struct id *);
+#ifdef COLLECT_EXPORT_LIST
+static void dump_list (FILE *, const char *, struct id *);
+#endif
+#if 0
+static void dump_prefix_list (FILE *, const char *, struct prefix_list *);
+#endif
+static void write_list_with_asm (FILE *, const char *, struct id *);
+static void write_c_file (FILE *, const char *);
+static void write_c_file_stat (FILE *, const char *);
+#ifndef LD_INIT_SWITCH
+static void write_c_file_glob (FILE *, const char *);
+#endif
+#ifdef SCAN_LIBRARIES
+static void scan_libraries (const char *);
+#endif
+#ifdef COLLECT_EXPORT_LIST
+#if 0
+static int is_in_list (const char *, struct id *);
+#endif
+static void write_aix_file (FILE *, struct id *);
+static char *resolve_lib_name (const char *);
+#endif
+static char *extract_string (const char **);
+static void post_ld_pass (bool);
+static void process_args (int *argcp, char **argv);
+
+/* Enumerations describing which pass this is for scanning the
+   program file ...  */
+
+typedef enum {
+  PASS_FIRST,				/* without constructors */
+  PASS_OBJ,				/* individual objects */
+  PASS_LIB,				/* looking for shared libraries */
+  PASS_SECOND,				/* with constructors linked in */
+  PASS_LTOINFO				/* looking for objects with LTO info */
+} scanpass;
+
+/* ... and which kinds of symbols are to be considered.  */
+
+enum scanfilter_masks {
+  SCAN_NOTHING = 0,
+
+  SCAN_CTOR = 1 << SYM_CTOR,
+  SCAN_DTOR = 1 << SYM_DTOR,
+  SCAN_INIT = 1 << SYM_INIT,
+  SCAN_FINI = 1 << SYM_FINI,
+  SCAN_DWEH = 1 << SYM_DWEH,
+  SCAN_ALL  = ~0
+};
+
+/* This type is used for parameters and variables which hold
+   combinations of the flags in enum scanfilter_masks.  */
+typedef int scanfilter;
+
+/* Scan the name list of the loaded program for the symbols g++ uses for
+   static constructors and destructors.
+
+   The SCANPASS argument tells which collect processing pass this is for and
+   the SCANFILTER argument tells which kinds of symbols to consider in this
+   pass.  Symbols of a special kind not in the filter mask are considered as
+   regular ones.
+
+   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 (const char *, scanpass, scanfilter);
+
+
+/* Delete tempfiles and exit function.  */
+
+void
+collect_exit (int status)
+{
+  if (c_file != 0 && c_file[0])
+    maybe_unlink (c_file);
+
+  if (o_file != 0 && o_file[0])
+    maybe_unlink (o_file);
+
+#ifdef COLLECT_EXPORT_LIST
+  if (export_file != 0 && export_file[0])
+    maybe_unlink (export_file);
+#endif
+
+  if (lto_o_files)
+    maybe_unlink_list (lto_o_files);
+
+  if (ldout != 0 && ldout[0])
+    {
+      dump_ld_file (ldout, stdout);
+      maybe_unlink (ldout);
+    }
+
+  if (lderrout != 0 && lderrout[0])
+    {
+      dump_ld_file (lderrout, stderr);
+      maybe_unlink (lderrout);
+    }
+
+  if (status != 0 && output_file != 0 && output_file[0])
+    maybe_unlink (output_file);
+
+  if (response_file)
+    maybe_unlink (response_file);
+
+  exit (status);
+}
+
+
+/* Notify user of a non-error.  */
+void
+notice (const char *cmsgid, ...)
+{
+  va_list ap;
+
+  va_start (ap, cmsgid);
+  vfprintf (stderr, _(cmsgid), ap);
+  va_end (ap);
+}
+
+/* Notify user of a non-error, without translating the format string.  */
+void
+notice_translated (const char *cmsgid, ...)
+{
+  va_list ap;
+
+  va_start (ap, cmsgid);
+  vfprintf (stderr, cmsgid, ap);
+  va_end (ap);
+}
+
+static void
+handler (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);
+
+  if (lderrout != 0 && lderrout[0])
+    maybe_unlink (lderrout);
+
+#ifdef COLLECT_EXPORT_LIST
+  if (export_file != 0 && export_file[0])
+    maybe_unlink (export_file);
+#endif
+
+  if (lto_o_files)
+    maybe_unlink_list (lto_o_files);
+
+  if (response_file)
+    maybe_unlink (response_file);
+
+  signal (signo, SIG_DFL);
+  raise (signo);
+}
+
+
+int
+file_exists (const char *name)
+{
+  return access (name, R_OK) == 0;
+}
+
+/* Parse a reasonable subset of shell quoting syntax.  */
+
+static char *
+extract_string (const char **pp)
+{
+  const char *p = *pp;
+  int backquote = 0;
+  int inside = 0;
+
+  for (;;)
+    {
+      char c = *p;
+      if (c == '\0')
+	break;
+      ++p;
+      if (backquote)
+	obstack_1grow (&temporary_obstack, c);
+      else if (! inside && c == ' ')
+	break;
+      else if (! inside && c == '\\')
+	backquote = 1;
+      else if (c == '\'')
+	inside = !inside;
+      else
+	obstack_1grow (&temporary_obstack, c);
+    }
+
+  obstack_1grow (&temporary_obstack, '\0');
+  *pp = p;
+  return XOBFINISH (&temporary_obstack, char *);
+}
+
+void
+dump_ld_file (const char *name, FILE *to)
+{
+  FILE *stream = fopen (name, "r");
+
+  if (stream == 0)
+    return;
+  while (1)
+    {
+      int c;
+      while (c = getc (stream),
+	     c != EOF && (ISIDNUM (c) || c == '$' || c == '.'))
+	obstack_1grow (&temporary_obstack, c);
+      if (obstack_object_size (&temporary_obstack) > 0)
+	{
+	  const char *word, *p;
+	  char *result;
+	  obstack_1grow (&temporary_obstack, '\0');
+	  word = XOBFINISH (&temporary_obstack, const char *);
+
+	  if (*word == '.')
+	    ++word, putc ('.', to);
+	  p = word;
+	  if (!strncmp (p, USER_LABEL_PREFIX, strlen (USER_LABEL_PREFIX)))
+	    p += strlen (USER_LABEL_PREFIX);
+
+#ifdef HAVE_LD_DEMANGLE
+	  result = 0;
+#else
+	  if (no_demangle)
+	    result = 0;
+	  else
+	    result = cplus_demangle (p, DMGL_PARAMS | DMGL_ANSI | DMGL_VERBOSE);
+#endif
+
+	  if (result)
+	    {
+	      int diff;
+	      fputs (result, to);
+
+	      diff = strlen (word) - strlen (result);
+	      while (diff > 0 && c == ' ')
+		--diff, putc (' ', to);
+	      if (diff < 0 && c == ' ')
+		{
+		  while (diff < 0 && c == ' ')
+		    ++diff, c = getc (stream);
+		  if (!ISSPACE (c))
+		    {
+		      /* Make sure we output at least one space, or
+			 the demangled symbol name will run into
+			 whatever text follows.  */
+		      putc (' ', to);
+		    }
+		}
+
+	      free (result);
+	    }
+	  else
+	    fputs (word, to);
+
+	  fflush (to);
+	  obstack_free (&temporary_obstack, temporary_firstobj);
+	}
+      if (c == EOF)
+	break;
+      putc (c, to);
+    }
+  fclose (stream);
+}
+
+/* Return the kind of symbol denoted by name S.  */
+
+static symkind
+is_ctor_dtor (const char *s)
+{
+  struct names { const char *const name; const int len; symkind ret;
+    const int two_underscores; };
+
+  const struct names *p;
+  int ch;
+  const char *orig_s = s;
+
+  static const struct names special[] = {
+#ifndef NO_DOLLAR_IN_LABEL
+    { "GLOBAL__I$", sizeof ("GLOBAL__I$")-1, SYM_CTOR, 0 },
+    { "GLOBAL__D$", sizeof ("GLOBAL__D$")-1, SYM_DTOR, 0 },
+#else
+#ifndef NO_DOT_IN_LABEL
+    { "GLOBAL__I.", sizeof ("GLOBAL__I.")-1, SYM_CTOR, 0 },
+    { "GLOBAL__D.", sizeof ("GLOBAL__D.")-1, SYM_DTOR, 0 },
+#endif /* NO_DOT_IN_LABEL */
+#endif /* NO_DOLLAR_IN_LABEL */
+    { "GLOBAL__I_", sizeof ("GLOBAL__I_")-1, SYM_CTOR, 0 },
+    { "GLOBAL__D_", sizeof ("GLOBAL__D_")-1, SYM_DTOR, 0 },
+    { "GLOBAL__F_", sizeof ("GLOBAL__F_")-1, SYM_DWEH, 0 },
+    { "GLOBAL__FI_", sizeof ("GLOBAL__FI_")-1, SYM_INIT, 0 },
+    { "GLOBAL__FD_", sizeof ("GLOBAL__FD_")-1, SYM_FINI, 0 },
+    { NULL, 0, SYM_REGULAR, 0 }
+  };
+
+  while ((ch = *s) == '_')
+    ++s;
+
+  if (s == orig_s)
+    return SYM_REGULAR;
+
+  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 SYM_REGULAR;
+}
+
+/* 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_DIRECTORY_STRUCTURE
+/* This is the name of the target machine.  We use it to form the name
+   of the files to execute.  */
+
+static const char *const target_machine = TARGET_MACHINE;
+#endif
+
+/* 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.  */
+
+#ifdef OBJECT_FORMAT_NONE
+
+/* Add an entry for the object file NAME to object file list LIST.
+   New entries are added at the end of the list. The original pointer
+   value of NAME is preserved, i.e., no string copy is performed.  */
+
+static void
+add_lto_object (struct lto_object_list *list, const char *name)
+{
+  struct lto_object *n = XNEW (struct lto_object);
+  n->name = name;
+  n->next = NULL;
+
+  if (list->last)
+    list->last->next = n;
+  else
+    list->first = n;
+
+  list->last = n;
+}
+#endif /* OBJECT_FORMAT_NONE */
+
+
+/* Perform a link-time recompilation and relink if any of the object
+   files contain LTO info.  The linker command line LTO_LD_ARGV
+   represents the linker command that would produce a final executable
+   without the use of LTO. OBJECT_LST is a vector of object file names
+   appearing in LTO_LD_ARGV that are to be considered for link-time
+   recompilation, where OBJECT is a pointer to the last valid element.
+   (This awkward convention avoids an impedance mismatch with the
+   usage of similarly-named variables in main().)  The elements of
+   OBJECT_LST must be identical, i.e., pointer equal, to the
+   corresponding arguments in LTO_LD_ARGV.
+
+   Upon entry, at least one linker run has been performed without the
+   use of any LTO info that might be present.  Any recompilations
+   necessary for template instantiations have been performed, and
+   initializer/finalizer tables have been created if needed and
+   included in the linker command line LTO_LD_ARGV. If any of the
+   object files contain LTO info, we run the LTO back end on all such
+   files, and perform the final link with the LTO back end output
+   substituted for the LTO-optimized files.  In some cases, a final
+   link with all link-time generated code has already been performed,
+   so there is no need to relink if no LTO info is found.  In other
+   cases, our caller has not produced the final executable, and is
+   relying on us to perform the required link whether LTO info is
+   present or not.  In that case, the FORCE argument should be true.
+   Note that the linker command line argument LTO_LD_ARGV passed into
+   this function may be modified in place.  */
+
+static void
+maybe_run_lto_and_relink (char **lto_ld_argv, char **object_lst,
+			  const char **object, bool force)
+{
+  const char **object_file = CONST_CAST2 (const char **, char **, object_lst);
+
+  int num_lto_c_args = 1;    /* Allow space for the terminating NULL.  */
+
+  while (object_file < object)
+  {
+    /* If file contains LTO info, add it to the list of LTO objects.  */
+    scan_prog_file (*object_file++, PASS_LTOINFO, SCAN_ALL);
+
+    /* Increment the argument count by the number of object file arguments
+       we will add.  An upper bound suffices, so just count all of the
+       object files regardless of whether they contain LTO info.  */
+    num_lto_c_args++;
+  }
+
+  if (lto_objects.first)
+    {
+      char **lto_c_argv;
+      const char **lto_c_ptr;
+      char **p;
+      char **lto_o_ptr;
+      struct lto_object *list;
+      char *lto_wrapper = getenv ("COLLECT_LTO_WRAPPER");
+      struct pex_obj *pex;
+      const char *prog = "lto-wrapper";
+      int lto_ld_argv_size = 0;
+      char **out_lto_ld_argv;
+      int out_lto_ld_argv_size;
+      size_t num_files;
+
+      if (!lto_wrapper)
+	fatal_error ("COLLECT_LTO_WRAPPER must be set");
+
+      num_lto_c_args++;
+
+      /* There is at least one object file containing LTO info,
+         so we need to run the LTO back end and relink.
+
+	 To do so we build updated ld arguments with first
+	 LTO object replaced by all partitions and other LTO
+	 objects removed.  */
+
+      lto_c_argv = (char **) xcalloc (sizeof (char *), num_lto_c_args);
+      lto_c_ptr = CONST_CAST2 (const char **, char **, lto_c_argv);
+
+      *lto_c_ptr++ = lto_wrapper;
+
+      /* Add LTO objects to the wrapper command line.  */
+      for (list = lto_objects.first; list; list = list->next)
+	*lto_c_ptr++ = list->name;
+
+      *lto_c_ptr = NULL;
+
+      /* Run the LTO back end.  */
+      pex = collect_execute (prog, lto_c_argv, NULL, NULL, PEX_SEARCH);
+      {
+	int c;
+	FILE *stream;
+	size_t i;
+	char *start, *end;
+
+	stream = pex_read_output (pex, 0);
+	gcc_assert (stream);
+
+	num_files = 0;
+	while ((c = getc (stream)) != EOF)
+	  {
+	    obstack_1grow (&temporary_obstack, c);
+	    if (c == '\n')
+	      ++num_files;
+	  }
+
+	lto_o_files = XNEWVEC (char *, num_files + 1);
+	lto_o_files[num_files] = NULL;
+	start = XOBFINISH (&temporary_obstack, char *);
+	for (i = 0; i < num_files; ++i)
+	  {
+	    end = start;
+	    while (*end != '\n')
+	      ++end;
+	    *end = '\0';
+
+	    lto_o_files[i] = xstrdup (start);
+
+	    start = end + 1;
+	  }
+
+	obstack_free (&temporary_obstack, temporary_firstobj);
+      }
+      do_wait (prog, pex);
+      pex = NULL;
+
+      /* Compute memory needed for new LD arguments.  At most number of original arguemtns
+	 plus number of partitions.  */
+      for (lto_ld_argv_size = 0; lto_ld_argv[lto_ld_argv_size]; lto_ld_argv_size++)
+	;
+      out_lto_ld_argv = XCNEWVEC(char *, num_files + lto_ld_argv_size + 1);
+      out_lto_ld_argv_size = 0;
+
+      /* After running the LTO back end, we will relink, substituting
+	 the LTO output for the object files that we submitted to the
+	 LTO. Here, we modify the linker command line for the relink.  */
+
+      /* Copy all arguments until we find first LTO file.  */
+      p = lto_ld_argv;
+      while (*p != NULL)
+        {
+          for (list = lto_objects.first; list; list = list->next)
+            if (*p == list->name) /* Note test for pointer equality!  */
+	      break;
+	  if (list)
+	    break;
+	  out_lto_ld_argv[out_lto_ld_argv_size++] = *p++;
+        }
+
+      /* Now insert all LTO partitions.  */
+      lto_o_ptr = lto_o_files;
+      while (*lto_o_ptr)
+	out_lto_ld_argv[out_lto_ld_argv_size++] = *lto_o_ptr++;
+
+      /* ... and copy the rest.  */
+      while (*p != NULL)
+        {
+          for (list = lto_objects.first; list; list = list->next)
+            if (*p == list->name) /* Note test for pointer equality!  */
+	      break;
+	  if (!list)
+	    out_lto_ld_argv[out_lto_ld_argv_size++] = *p;
+	  p++;
+        }
+      out_lto_ld_argv[out_lto_ld_argv_size++] = 0;
+
+      /* Run the linker again, this time replacing the object files
+         optimized by the LTO with the temporary file generated by the LTO.  */
+      fork_execute ("ld", out_lto_ld_argv);
+      post_ld_pass (true);
+      free (lto_ld_argv);
+
+      maybe_unlink_list (lto_o_files);
+    }
+  else if (force)
+    {
+      /* Our caller is relying on us to do the link
+         even though there is no LTO back end work to be done.  */
+      fork_execute ("ld", lto_ld_argv);
+      post_ld_pass (false);
+    }
+}
+
+/* Main program.  */
+
+int
+main (int argc, char **argv)
+{
+  enum linker_select
+    {
+      USE_DEFAULT_LD,
+      USE_PLUGIN_LD,
+      USE_GOLD_LD,
+      USE_BFD_LD,
+      USE_LD_MAX
+    } selected_linker = USE_DEFAULT_LD;
+  static const char *const ld_suffixes[USE_LD_MAX] =
+    {
+      "ld",
+      PLUGIN_LD_SUFFIX,
+      "ld.gold",
+      "ld.bfd"
+    };
+  static const char *const real_ld_suffix = "real-ld";
+  static const char *const collect_ld_suffix = "collect-ld";
+  static const char *const nm_suffix	= "nm";
+  static const char *const gnm_suffix	= "gnm";
+#ifdef LDD_SUFFIX
+  static const char *const ldd_suffix	= LDD_SUFFIX;
+#endif
+  static const char *const strip_suffix = "strip";
+  static const char *const gstrip_suffix = "gstrip";
+
+  const char *full_ld_suffixes[USE_LD_MAX];
+#ifdef CROSS_DIRECTORY_STRUCTURE
+  /* 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 program in the system directories, we need to
+     qualify the program name with the target machine.  */
+
+  const char *const full_nm_suffix =
+    concat (target_machine, "-", nm_suffix, NULL);
+  const char *const full_gnm_suffix =
+    concat (target_machine, "-", gnm_suffix, NULL);
+#ifdef LDD_SUFFIX
+  const char *const full_ldd_suffix =
+    concat (target_machine, "-", ldd_suffix, NULL);
+#endif
+  const char *const full_strip_suffix =
+    concat (target_machine, "-", strip_suffix, NULL);
+  const char *const full_gstrip_suffix =
+    concat (target_machine, "-", gstrip_suffix, NULL);
+#else
+#ifdef LDD_SUFFIX
+  const char *const full_ldd_suffix	= ldd_suffix;
+#endif
+  const char *const full_nm_suffix	= nm_suffix;
+  const char *const full_gnm_suffix	= gnm_suffix;
+  const char *const full_strip_suffix	= strip_suffix;
+  const char *const full_gstrip_suffix	= gstrip_suffix;
+#endif /* CROSS_DIRECTORY_STRUCTURE */
+
+  const char *arg;
+  FILE *outf;
+#ifdef COLLECT_EXPORT_LIST
+  FILE *exportf;
+#endif
+  const char *ld_file_name;
+  const char *p;
+  char **c_argv;
+  const char **c_ptr;
+  char **ld1_argv;
+  const char **ld1;
+  bool use_plugin = false;
+  bool use_collect_ld = false;
+
+  /* The kinds of symbols we will have to consider when scanning the
+     outcome of a first pass link.  This is ALL to start with, then might
+     be adjusted before getting to the first pass link per se, typically on
+     AIX where we perform an early scan of objects and libraries to fetch
+     the list of global ctors/dtors and make sure they are not garbage
+     collected.  */
+  scanfilter ld1_filter = SCAN_ALL;
+
+  char **ld2_argv;
+  const char **ld2;
+  char **object_lst;
+  const char **object;
+#ifdef TARGET_AIX_VERSION
+  int object_nbr = argc;
+#endif
+  int first_file;
+  int num_c_args;
+  char **old_argv;
+  int i;
+
+  for (i = 0; i < USE_LD_MAX; i++)
+    full_ld_suffixes[i]
+#ifdef CROSS_DIRECTORY_STRUCTURE
+      = concat (target_machine, "-", ld_suffixes[i], NULL);
+#else
+      = ld_suffixes[i];
+#endif
+
+  p = argv[0] + strlen (argv[0]);
+  while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1]))
+    --p;
+  progname = p;
+
+  xmalloc_set_program_name (progname);
+
+  old_argv = argv;
+  expandargv (&argc, &argv);
+  if (argv != old_argv)
+    at_file_supplied = 1;
+
+  process_args (&argc, argv);
+
+  num_c_args = argc + 9;
+
+#ifndef HAVE_LD_DEMANGLE
+  no_demangle = !! getenv ("COLLECT_NO_DEMANGLE");
+
+  /* Suppress demangling by the real linker, which may be broken.  */
+  putenv (xstrdup ("COLLECT_NO_DEMANGLE=1"));
+#endif
+
+#if defined (COLLECT2_HOST_INITIALIZATION)
+  /* Perform system dependent initialization, if necessary.  */
+  COLLECT2_HOST_INITIALIZATION;
+#endif
+
+#ifdef SIGCHLD
+  /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
+     receive the signal.  A different setting is inheritable */
+  signal (SIGCHLD, SIG_DFL);
+#endif
+
+  /* Unlock the stdio streams.  */
+  unlock_std_streams ();
+
+  gcc_init_libintl ();
+
+  diagnostic_initialize (global_dc, 0);
+
+  /* Do not invoke xcalloc before this point, since locale needs to be
+     set first, in case a diagnostic is issued.  */
+
+  ld1_argv = XCNEWVEC (char *, argc + 4);
+  ld1 = CONST_CAST2 (const char **, char **, ld1_argv);
+  ld2_argv = XCNEWVEC (char *, argc + 11);
+  ld2 = CONST_CAST2 (const char **, char **, ld2_argv);
+  object_lst = XCNEWVEC (char *, argc);
+  object = CONST_CAST2 (const char **, char **, object_lst);
+
+#ifdef DEBUG
+  debug = 1;
+#endif
+
+  /* Parse command line early for instances of -debug.  This allows
+     the debug flag to be set before functions like find_a_file()
+     are called.  We also look for the -flto or -flto-partition=none flag to know
+     what LTO mode we are in.  */
+  {
+    bool no_partition = false;
+
+    for (i = 1; argv[i] != NULL; i ++)
+      {
+	if (! strcmp (argv[i], "-debug"))
+	  debug = true;
+        else if (! strcmp (argv[i], "-flto-partition=none"))
+	  no_partition = true;
+        else if ((! strncmp (argv[i], "-flto=", 6)
+		  || ! strcmp (argv[i], "-flto")) && ! use_plugin)
+	  lto_mode = LTO_MODE_WHOPR;
+	else if (!strncmp (argv[i], "-fno-lto", 8))
+	  lto_mode = LTO_MODE_NONE;
+        else if (! strcmp (argv[i], "-plugin"))
+	  {
+	    use_plugin = true;
+	    lto_mode = LTO_MODE_NONE;
+	    if (selected_linker == USE_DEFAULT_LD)
+	      selected_linker = USE_PLUGIN_LD;
+	  }
+	else if (strcmp (argv[i], "-fuse-ld=bfd") == 0)
+	  selected_linker = USE_BFD_LD;
+	else if (strcmp (argv[i], "-fuse-ld=gold") == 0)
+	  selected_linker = USE_GOLD_LD;
+
+#ifdef COLLECT_EXPORT_LIST
+	/* These flags are position independent, although their order
+	   is important - subsequent flags override earlier ones. */
+	else if (strcmp (argv[i], "-b64") == 0)
+	    aix64_flag = 1;
+	/* -bexport:filename always needs the :filename */
+	else if (strncmp (argv[i], "-bE:", 4) == 0
+	      || strncmp (argv[i], "-bexport:", 9) == 0)
+	    export_flag = 1;
+	else if (strcmp (argv[i], "-brtl") == 0
+	      || strcmp (argv[i], "-bsvr4") == 0
+	      || strcmp (argv[i], "-G") == 0)
+	    aixrtl_flag = 1;
+	else if (strcmp (argv[i], "-bnortl") == 0)
+	    aixrtl_flag = 0;
+#endif
+      }
+    vflag = debug;
+    find_file_set_debug (debug);
+    if (no_partition && lto_mode == LTO_MODE_WHOPR)
+      lto_mode = LTO_MODE_LTO;
+  }
+
+#ifndef DEFAULT_A_OUT_NAME
+  output_file = "a.out";
+#else
+  output_file = DEFAULT_A_OUT_NAME;
+#endif
+
+  obstack_begin (&temporary_obstack, 0);
+  temporary_firstobj = (char *) obstack_alloc (&temporary_obstack, 0);
+
+#ifndef HAVE_LD_DEMANGLE
+  current_demangling_style = auto_demangling;
+#endif
+  p = getenv ("COLLECT_GCC_OPTIONS");
+  while (p && *p)
+    {
+      const char *q = extract_string (&p);
+      if (*q == '-' && (q[1] == 'm' || q[1] == 'f'))
+	num_c_args++;
+    }
+  obstack_free (&temporary_obstack, temporary_firstobj);
+
+  /* -fno-profile-arcs -fno-test-coverage -fno-branch-probabilities
+     -fno-exceptions -w -fno-whole-program */
+  num_c_args += 6;
+
+  c_argv = XCNEWVEC (char *, num_c_args);
+  c_ptr = CONST_CAST2 (const char **, char **, c_argv);
+
+  if (argc < 2)
+    fatal_error ("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);
+
+  /* Try to discover a valid linker/nm/strip to use.  */
+
+  /* Maybe we know the right file to use (if not cross).  */
+  ld_file_name = 0;
+#ifdef DEFAULT_LINKER
+  if (access (DEFAULT_LINKER, X_OK) == 0)
+    ld_file_name = DEFAULT_LINKER;
+  if (ld_file_name == 0)
+#endif
+#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);
+      use_collect_ld = ld_file_name != 0;
+    }
+  /* 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_suffixes[selected_linker]);
+  /* 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_suffixes[selected_linker]);
+
+#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_DIRECTORY_STRUCTURE
+      c_file_name = concat (target_machine, "-gcc", NULL);
+#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.  */
+  c_file = make_temp_file (".c");
+  o_file = make_temp_file (".o");
+#ifdef COLLECT_EXPORT_LIST
+  export_file = make_temp_file (".x");
+#endif
+  ldout = make_temp_file (".ld");
+  lderrout = make_temp_file (".le");
+  *c_ptr++ = c_file_name;
+  *c_ptr++ = "-x";
+  *c_ptr++ = "c";
+  *c_ptr++ = "-c";
+  *c_ptr++ = "-o";
+  *c_ptr++ = o_file;
+
+#ifdef COLLECT_EXPORT_LIST
+  /* Generate a list of directories from LIBPATH.  */
+  prefix_from_env ("LIBPATH", &libpath_lib_dirs);
+  /* Add to this list also two standard directories where
+     AIX loader always searches for libraries.  */
+  add_prefix (&libpath_lib_dirs, "/lib");
+  add_prefix (&libpath_lib_dirs, "/usr/lib");
+#endif
+
+  /* Get any options that the upper GCC wants to pass to the sub-GCC.
+
+     AIX support needs to know if -shared has been specified before
+     parsing commandline arguments.  */
+
+  p = getenv ("COLLECT_GCC_OPTIONS");
+  while (p && *p)
+    {
+      const char *q = extract_string (&p);
+      if (*q == '-' && (q[1] == 'm' || q[1] == 'f'))
+	*c_ptr++ = xstrdup (q);
+      if (strcmp (q, "-EL") == 0 || strcmp (q, "-EB") == 0)
+	*c_ptr++ = xstrdup (q);
+      if (strcmp (q, "-shared") == 0)
+	shared_obj = 1;
+      if (*q == '-' && q[1] == 'B')
+	{
+	  *c_ptr++ = xstrdup (q);
+	  if (q[2] == 0)
+	    {
+	      q = extract_string (&p);
+	      *c_ptr++ = xstrdup (q);
+	    }
+	}
+    }
+  obstack_free (&temporary_obstack, temporary_firstobj);
+  *c_ptr++ = "-fno-profile-arcs";
+  *c_ptr++ = "-fno-test-coverage";
+  *c_ptr++ = "-fno-branch-probabilities";
+  *c_ptr++ = "-fno-exceptions";
+  *c_ptr++ = "-w";
+  *c_ptr++ = "-fno-whole-program";
+
+  /* !!! 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"))
+		{
+		  /* Already parsed.  */
+		  ld1--;
+		  ld2--;
+		}
+	      if (!strcmp (arg, "-dynamic-linker") && argv[1])
+		{
+		  ++argv;
+		  *ld1++ = *ld2++ = *argv;
+		}
+	      break;
+
+            case 'f':
+	      if (strncmp (arg, "-flto", 5) == 0)
+		{
+#ifdef ENABLE_LTO
+		  /* Do not pass LTO flag to the linker. */
+		  ld1--;
+		  ld2--;
+#else
+		  error ("LTO support has not been enabled in this "
+			 "configuration");
+#endif
+		}
+	      else if (!use_collect_ld
+		       && strncmp (arg, "-fuse-ld=", 9) == 0)
+		{
+		  /* Do not pass -fuse-ld={bfd|gold} to the linker. */
+		  ld1--;
+		  ld2--;
+		}
+#ifdef TARGET_AIX_VERSION
+	      else
+		{
+		  /* File containing a list of input files to process.  */
+
+		  FILE *stream;
+                  char buf[MAXPATHLEN + 2];
+		  /* Number of additionnal object files.  */
+		  int add_nbr = 0;
+		  /* Maximum of additionnal object files before vector
+		     expansion.  */
+		  int add_max = 0;
+		  const char *list_filename = arg + 2;
+
+		  /* Accept -fFILENAME and -f FILENAME.  */
+		  if (*list_filename == '\0' && argv[1])
+		    {
+		      ++argv;
+		      list_filename = *argv;
+		      *ld1++ = *ld2++ = *argv;
+		    }
+
+		  stream = fopen (list_filename, "r");
+		  if (stream == NULL)
+		    fatal_error ("can't open %s: %m", list_filename);
+
+		  while (fgets (buf, sizeof buf, stream) != NULL)
+		    {
+		      /* Remove end of line.  */
+		      int len = strlen (buf);
+		      if (len >= 1 && buf[len - 1] =='\n')
+			buf[len - 1] = '\0';
+
+		      /* Put on object vector.
+			 Note: we only expanse vector here, so we must keep
+			 extra space for remaining arguments.  */
+		      if (add_nbr >= add_max)
+			{
+			  int pos =
+			    object - CONST_CAST2 (const char **, char **,
+						  object_lst);
+			  add_max = (add_max == 0) ? 16 : add_max * 2;
+			  object_lst = XRESIZEVEC (char *, object_lst,
+                                                   object_nbr + add_max);
+			  object = CONST_CAST2 (const char **, char **,
+						object_lst) + pos;
+			  object_nbr += add_max;
+			}
+		      *object++ = xstrdup (buf);
+		      add_nbr++;
+		    }
+		  fclose (stream);
+		}
+#endif
+              break;
+
+	    case 'l':
+	      if (first_file)
+		{
+		  /* place o_file BEFORE this argument! */
+		  first_file = 0;
+		  ld2--;
+		  *ld2++ = o_file;
+		  *ld2++ = arg;
+		}
+#ifdef COLLECT_EXPORT_LIST
+	      {
+		/* Resolving full library name.  */
+		const char *s = resolve_lib_name (arg+2);
+
+		/* Saving a full library name.  */
+		add_to_list (&libs, s);
+	      }
+#endif
+	      break;
+
+#ifdef COLLECT_EXPORT_LIST
+	    /* Saving directories where to search for libraries.  */
+	    case 'L':
+	      add_prefix (&cmdline_lib_dirs, arg+2);
+	      break;
+#endif
+
+	    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
+		     will not 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 = true;
+	      break;
+
+	    case '-':
+	      if (strcmp (arg, "--no-demangle") == 0)
+		{
+#ifndef HAVE_LD_DEMANGLE
+		  no_demangle = 1;
+		  ld1--;
+		  ld2--;
+#endif
+		}
+	      else if (strncmp (arg, "--demangle", 10) == 0)
+		{
+#ifndef HAVE_LD_DEMANGLE
+		  no_demangle = 0;
+		  if (arg[10] == '=')
+		    {
+		      enum demangling_styles style
+			= cplus_demangle_name_to_style (arg+11);
+		      if (style == unknown_demangling)
+			error ("unknown demangling style '%s'", arg+11);
+		      else
+			current_demangling_style = style;
+		    }
+		  ld1--;
+		  ld2--;
+#endif
+		}
+	      else if (strncmp (arg, "--sysroot=", 10) == 0)
+		target_system_root = arg + 10;
+	      else if (strcmp (arg, "--version") == 0)
+		vflag = true;
+	      else if (strcmp (arg, "--help") == 0)
+		helpflag = true;
+	      break;
+	    }
+	}
+      else if ((p = strrchr (arg, '.')) != (char *) 0
+	       && (strcmp (p, ".o") == 0 || strcmp (p, ".a") == 0
+		   || strcmp (p, ".so") == 0 || strcmp (p, ".lo") == 0
+		   || strcmp (p, ".obj") == 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' || p[1] == 'l')
+	    *object++ = arg;
+#ifdef COLLECT_EXPORT_LIST
+	  /* libraries can be specified directly, i.e. without -l flag.  */
+	  else
+	    {
+	      /* Saving a full library name.  */
+	      add_to_list (&libs, arg);
+	    }
+#endif
+	}
+    }
+
+#ifdef COLLECT_EXPORT_LIST
+  /* This is added only for debugging purposes.  */
+  if (debug)
+    {
+      fprintf (stderr, "List of libraries:\n");
+      dump_list (stderr, "\t", libs.first);
+    }
+
+  /* The AIX linker will discard static constructors in object files if
+     nothing else in the file is referenced, so look at them first.  Unless
+     we are building a shared object, ignore the eh frame tables, as we
+     would otherwise reference them all, hence drag all the corresponding
+     objects even if nothing else is referenced.  */
+  {
+    const char **export_object_lst
+      = CONST_CAST2 (const char **, char **, object_lst);
+
+    struct id *list = libs.first;
+
+    /* Compute the filter to use from the current one, do scan, then adjust
+       the "current" filter to remove what we just included here.  This will
+       control whether we need a first pass link later on or not, and what
+       will remain to be scanned there.  */
+
+    scanfilter this_filter = ld1_filter;
+#if HAVE_AS_REF
+    if (!shared_obj)
+      this_filter &= ~SCAN_DWEH;
+#endif
+
+    while (export_object_lst < object)
+      scan_prog_file (*export_object_lst++, PASS_OBJ, this_filter);
+
+    for (; list; list = list->next)
+      scan_prog_file (list->name, PASS_FIRST, this_filter);
+
+    ld1_filter = ld1_filter & ~this_filter;
+  }
+
+  if (exports.first)
+    {
+      char *buf = concat ("-bE:", export_file, NULL);
+
+      *ld1++ = buf;
+      *ld2++ = buf;
+
+      exportf = fopen (export_file, "w");
+      if (exportf == (FILE *) 0)
+	fatal_error ("fopen %s: %m", export_file);
+      write_aix_file (exportf, exports.first);
+      if (fclose (exportf))
+	fatal_error ("fclose %s: %m", export_file);
+    }
+#endif
+
+  *c_ptr++ = c_file;
+  *c_ptr = *ld1 = *object = (char *) 0;
+
+  if (vflag)
+    notice ("collect2 version %s\n", version_string);
+
+  if (helpflag)
+    {
+      printf ("Usage: collect2 [options]\n");
+      printf (" Wrap linker and generate constructor code if needed.\n");
+      printf (" Options:\n");
+      printf ("  -debug          Enable debug output\n");
+      printf ("  --help          Display this information\n");
+      printf ("  -v, --version   Display this program's version number\n");
+      printf ("\n");
+      printf ("Overview: http://gcc.gnu.org/onlinedocs/gccint/Collect2.html\n");
+      printf ("Report bugs: %s\n", bug_report_url);
+      printf ("\n");
+    }
+
+  if (debug)
+    {
+      const 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_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_ENV);
+      if (ptr)
+	fprintf (stderr, "%-20s= %s\n", LIBRARY_PATH_ENV, ptr);
+
+      fprintf (stderr, "\n");
+    }
+
+  /* Load the program, searching all libraries and attempting to provide
+     undefined symbols from repository information.
+
+     If -r or they will be run via some other method, do not build the
+     constructor or destructor list, just return now.  */
+  {
+    bool early_exit
+      = rflag || (! DO_COLLECT_EXPORT_LIST && ! do_collecting);
+
+    /* Perform the first pass link now, if we're about to exit or if we need
+       to scan for things we haven't collected yet before pursuing further.
+
+       On AIX, the latter typically includes nothing for shared objects or
+       frame tables for an executable, out of what the required early scan on
+       objects and libraries has performed above.  In the !shared_obj case, we
+       expect the relevant tables to be dragged together with their associated
+       functions from precise cross reference insertions by the compiler.  */
+
+    if (early_exit || ld1_filter != SCAN_NOTHING)
+      do_tlink (ld1_argv, object_lst);
+
+    if (early_exit)
+      {
+#ifdef COLLECT_EXPORT_LIST
+	/* Make sure we delete the export file we may have created.  */
+	if (export_file != 0 && export_file[0])
+	  maybe_unlink (export_file);
+#endif
+	if (lto_mode != LTO_MODE_NONE)
+	  maybe_run_lto_and_relink (ld1_argv, object_lst, object, false);
+	else
+	  post_ld_pass (false);
+
+	maybe_unlink (c_file);
+	maybe_unlink (o_file);
+	return 0;
+      }
+  }
+
+  /* Unless we have done it all already, examine the namelist and search for
+     static constructors and destructors to call.  Write the constructor and
+     destructor tables to a .s file and reload.  */
+
+  if (ld1_filter != SCAN_NOTHING)
+    scan_prog_file (output_file, PASS_FIRST, ld1_filter);
+
+#ifdef SCAN_LIBRARIES
+  scan_libraries (output_file);
+#endif
+
+  if (debug)
+    {
+      notice_translated (ngettext ("%d constructor found\n",
+                                   "%d constructors found\n",
+                                   constructors.number),
+                         constructors.number);
+      notice_translated (ngettext ("%d destructor found\n",
+                                   "%d destructors found\n",
+                                   destructors.number),
+                         destructors.number);
+      notice_translated (ngettext("%d frame table found\n",
+                                  "%d frame tables found\n",
+                                  frame_tables.number),
+                         frame_tables.number);
+    }
+
+  /* If the scan exposed nothing of special interest, there's no need to
+     generate the glue code and relink so return now.  */
+
+  if (constructors.number == 0 && destructors.number == 0
+      && frame_tables.number == 0
+#if defined (SCAN_LIBRARIES) || defined (COLLECT_EXPORT_LIST)
+      /* If we will be running these functions ourselves, we want to emit
+	 stubs into the shared library so that we do not have to relink
+	 dependent programs when we add static objects.  */
+      && ! shared_obj
+#endif
+      )
+    {
+      /* Do tlink without additional code generation now if we didn't
+	 do it earlier for scanning purposes.  */
+      if (ld1_filter == SCAN_NOTHING)
+	do_tlink (ld1_argv, object_lst);
+
+      if (lto_mode)
+        maybe_run_lto_and_relink (ld1_argv, object_lst, object, false);
+
+      /* Strip now if it was requested on the command line.  */
+      if (strip_flag)
+	{
+	  char **real_strip_argv = XCNEWVEC (char *, 3);
+	  const char ** strip_argv = CONST_CAST2 (const char **, char **,
+						  real_strip_argv);
+
+	  strip_argv[0] = strip_file_name;
+	  strip_argv[1] = output_file;
+	  strip_argv[2] = (char *) 0;
+	  fork_execute ("strip", real_strip_argv);
+	}
+
+#ifdef COLLECT_EXPORT_LIST
+      maybe_unlink (export_file);
+#endif
+      post_ld_pass (false);
+
+      maybe_unlink (c_file);
+      maybe_unlink (o_file);
+      return 0;
+    }
+
+  /* Sort ctor and dtor lists by priority.  */
+  sort_ids (&constructors);
+  sort_ids (&destructors);
+
+  maybe_unlink(output_file);
+  outf = fopen (c_file, "w");
+  if (outf == (FILE *) 0)
+    fatal_error ("fopen %s: %m", c_file);
+
+  write_c_file (outf, c_file);
+
+  if (fclose (outf))
+    fatal_error ("fclose %s: %m", c_file);
+
+  /* Tell the linker that we have initializer and finalizer functions.  */
+#ifdef LD_INIT_SWITCH
+#ifdef COLLECT_EXPORT_LIST
+  *ld2++ = concat (LD_INIT_SWITCH, ":", initname, ":", fininame, NULL);
+#else
+  *ld2++ = LD_INIT_SWITCH;
+  *ld2++ = initname;
+  *ld2++ = LD_FINI_SWITCH;
+  *ld2++ = fininame;
+#endif
+#endif
+
+#ifdef COLLECT_EXPORT_LIST
+  if (shared_obj)
+    {
+      /* If we did not add export flag to link arguments before, add it to
+	 second link phase now.  No new exports should have been added.  */
+      if (! exports.first)
+	*ld2++ = concat ("-bE:", export_file, NULL);
+
+#ifndef LD_INIT_SWITCH
+      add_to_list (&exports, initname);
+      add_to_list (&exports, fininame);
+      add_to_list (&exports, "_GLOBAL__DI");
+      add_to_list (&exports, "_GLOBAL__DD");
+#endif
+      exportf = fopen (export_file, "w");
+      if (exportf == (FILE *) 0)
+	fatal_error ("fopen %s: %m", export_file);
+      write_aix_file (exportf, exports.first);
+      if (fclose (exportf))
+	fatal_error ("fclose %s: %m", export_file);
+    }
+#endif
+
+  /* End of arguments to second link phase.  */
+  *ld2 = (char*) 0;
+
+  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_aix_file (stderr, exports.first);
+      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);
+#ifdef COLLECT_EXPORT_LIST
+  /* On AIX we must call tlink because of possible templates resolution.  */
+  do_tlink (ld2_argv, object_lst);
+
+  if (lto_mode)
+    maybe_run_lto_and_relink (ld2_argv, object_lst, object, false);
+#else
+  /* Otherwise, simply call ld because tlink is already done.  */
+  if (lto_mode)
+    maybe_run_lto_and_relink (ld2_argv, object_lst, object, true);
+  else
+    {
+      fork_execute ("ld", ld2_argv);
+      post_ld_pass (false);
+    }
+
+  /* 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, SCAN_ALL);
+#endif
+
+  maybe_unlink (c_file);
+  maybe_unlink (o_file);
+
+#ifdef COLLECT_EXPORT_LIST
+  maybe_unlink (export_file);
+#endif
+
+  return 0;
+}
+
+
+/* Wait for a process to finish, and exit if a nonzero status is found.  */
+
+int
+collect_wait (const char *prog, struct pex_obj *pex)
+{
+  int status;
+
+  if (!pex_get_status (pex, 1, &status))
+    fatal_error ("can't get program status: %m");
+  pex_free (pex);
+
+  if (status)
+    {
+      if (WIFSIGNALED (status))
+	{
+	  int sig = WTERMSIG (status);
+	  error ("%s terminated with signal %d [%s]%s",
+		 prog, sig, strsignal(sig),
+		 WCOREDUMP(status) ? ", core dumped" : "");
+	  collect_exit (FATAL_EXIT_CODE);
+	}
+
+      if (WIFEXITED (status))
+	return WEXITSTATUS (status);
+    }
+  return 0;
+}
+
+static void
+do_wait (const char *prog, struct pex_obj *pex)
+{
+  int ret = collect_wait (prog, pex);
+  if (ret != 0)
+    {
+      error ("%s returned %d exit status", prog, ret);
+      collect_exit (ret);
+    }
+
+  if (response_file)
+    {
+      unlink (response_file);
+      response_file = NULL;
+    }
+}
+
+
+/* Execute a program, and wait for the reply.  */
+
+struct pex_obj *
+collect_execute (const char *prog, char **argv, const char *outname,
+		 const char *errname, int flags)
+{
+  struct pex_obj *pex;
+  const char *errmsg;
+  int err;
+  char *response_arg = NULL;
+  char *response_argv[3] ATTRIBUTE_UNUSED;
+
+  if (HAVE_GNU_LD && at_file_supplied && argv[0] != NULL)
+    {
+      /* If using @file arguments, create a temporary file and put the
+         contents of argv into it.  Then change argv to an array corresponding
+         to a single argument @FILE, where FILE is the temporary filename.  */
+
+      char **current_argv = argv + 1;
+      char *argv0 = argv[0];
+      int status;
+      FILE *f;
+
+      /* Note: we assume argv contains at least one element; this is
+         checked above.  */
+
+      response_file = make_temp_file ("");
+
+      f = fopen (response_file, "w");
+
+      if (f == NULL)
+        fatal_error ("could not open response file %s", response_file);
+
+      status = writeargv (current_argv, f);
+
+      if (status)
+        fatal_error ("could not write to response file %s", response_file);
+
+      status = fclose (f);
+
+      if (EOF == status)
+        fatal_error ("could not close response file %s", response_file);
+
+      response_arg = concat ("@", response_file, NULL);
+      response_argv[0] = argv0;
+      response_argv[1] = response_arg;
+      response_argv[2] = NULL;
+
+      argv = response_argv;
+    }
+
+  if (vflag || debug)
+    {
+      char **p_argv;
+      const char *str;
+
+      if (argv[0])
+	fprintf (stderr, "%s", argv[0]);
+      else
+	notice ("[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 cannot find a program we need, complain error.  Do this here
+     since we might not end up needing something that we could not find.  */
+
+  if (argv[0] == 0)
+    fatal_error ("cannot find '%s'", prog);
+
+  pex = pex_init (0, "collect2", NULL);
+  if (pex == NULL)
+    fatal_error ("pex_init failed: %m");
+
+  errmsg = pex_run (pex, flags, argv[0], argv, outname,
+		    errname, &err);
+  if (errmsg != NULL)
+    {
+      if (err != 0)
+	{
+	  errno = err;
+	  fatal_error ("%s: %m", _(errmsg));
+	}
+      else
+	fatal_error (errmsg);
+    }
+
+  free (response_arg);
+
+  return pex;
+}
+
+static void
+fork_execute (const char *prog, char **argv)
+{
+  struct pex_obj *pex;
+
+  pex = collect_execute (prog, argv, NULL, NULL, PEX_LAST | PEX_SEARCH);
+  do_wait (prog, pex);
+}
+
+/* Unlink FILE unless we are debugging or this is the output_file
+   and we may not unlink it.  */
+
+static void
+maybe_unlink (const char *file)
+{
+  if (debug)
+    {
+      notice ("[Leaving %s]\n", file);
+      return;
+    }
+
+  if (file == output_file && !may_unlink_output_file)
+    return;
+
+  unlink_if_ordinary (file);
+}
+
+/* Call maybe_unlink on the NULL-terminated list, FILE_LIST.  */
+
+static void
+maybe_unlink_list (char **file_list)
+{
+  char **tmp = file_list;
+
+  while (*tmp)
+    maybe_unlink (*(tmp++));
+}
+
+
+static long sequence_number = 0;
+
+/* Add a name to a linked list.  */
+
+static void
+add_to_list (struct head *head_ptr, const char *name)
+{
+  struct id *newid
+    = (struct id *) xcalloc (sizeof (struct id) + strlen (name), 1);
+  struct id *p;
+  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++;
+}
+
+/* Grab the init priority number from an init function name that
+   looks like "_GLOBAL_.I.12345.foo".  */
+
+static int
+extract_init_priority (const char *name)
+{
+  int pos = 0, pri;
+
+  while (name[pos] == '_')
+    ++pos;
+  pos += 10; /* strlen ("GLOBAL__X_") */
+
+  /* Extract init_p number from ctor/dtor name.  */
+  pri = atoi (name + pos);
+  return pri ? pri : DEFAULT_INIT_PRIORITY;
+}
+
+/* Insertion sort the ids from ctor/dtor list HEAD_PTR in descending order.
+   ctors will be run from right to left, dtors from left to right.  */
+
+static void
+sort_ids (struct head *head_ptr)
+{
+  /* id holds the current element to insert.  id_next holds the next
+     element to insert.  id_ptr iterates through the already sorted elements
+     looking for the place to insert id.  */
+  struct id *id, *id_next, **id_ptr;
+
+  id = head_ptr->first;
+
+  /* We don't have any sorted elements yet.  */
+  head_ptr->first = NULL;
+
+  for (; id; id = id_next)
+    {
+      id_next = id->next;
+      id->sequence = extract_init_priority (id->name);
+
+      for (id_ptr = &(head_ptr->first); ; id_ptr = &((*id_ptr)->next))
+	if (*id_ptr == NULL
+	    /* If the sequence numbers are the same, we put the id from the
+	       file later on the command line later in the list.  */
+	    || id->sequence > (*id_ptr)->sequence
+	    /* Hack: do lexical compare, too.
+	    || (id->sequence == (*id_ptr)->sequence
+		&& strcmp (id->name, (*id_ptr)->name) > 0) */
+	    )
+	  {
+	    id->next = *id_ptr;
+	    *id_ptr = id;
+	    break;
+	  }
+    }
+
+  /* Now set the sequence numbers properly so write_c_file works.  */
+  for (id = head_ptr->first; id; id = id->next)
+    id->sequence = ++sequence_number;
+}
+
+/* Write: `prefix', the names on list LIST, `suffix'.  */
+
+static void
+write_list (FILE *stream, const char *prefix, struct id *list)
+{
+  while (list)
+    {
+      fprintf (stream, "%sx%d,\n", prefix, list->sequence);
+      list = list->next;
+    }
+}
+
+#ifdef COLLECT_EXPORT_LIST
+/* This function is really used only on AIX, but may be useful.  */
+#if 0
+static int
+is_in_list (const char *prefix, struct id *list)
+{
+  while (list)
+    {
+      if (!strcmp (prefix, list->name)) return 1;
+      list = list->next;
+    }
+    return 0;
+}
+#endif
+#endif /* COLLECT_EXPORT_LIST */
+
+/* Added for debugging purpose.  */
+#ifdef COLLECT_EXPORT_LIST
+static void
+dump_list (FILE *stream, const char *prefix, struct id *list)
+{
+  while (list)
+    {
+      fprintf (stream, "%s%s,\n", prefix, list->name);
+      list = list->next;
+    }
+}
+#endif
+
+#if 0
+static void
+dump_prefix_list (FILE *stream, const char *prefix, struct prefix_list *list)
+{
+  while (list)
+    {
+      fprintf (stream, "%s%s,\n", prefix, list->prefix);
+      list = list->next;
+    }
+}
+#endif
+
+static void
+write_list_with_asm (FILE *stream, const 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 (FILE *stream, const char *name ATTRIBUTE_UNUSED)
+{
+  const char *p, *q;
+  char *prefix, *r;
+  int frames = (frame_tables.number > 0);
+
+  /* Figure out name of output_file, stripping off .so version.  */
+  q = p = lbasename (output_file);
+
+  while (q)
+    {
+      q = strchr (q,'.');
+      if (q == 0)
+	{
+	  q = p + strlen (p);
+	  break;
+	}
+      else
+	{
+	  if (filename_ncmp (q, SHLIB_SUFFIX, strlen (SHLIB_SUFFIX)) == 0)
+	    {
+	      q += strlen (SHLIB_SUFFIX);
+	      break;
+	    }
+	  else
+	    q++;
+	}
+    }
+  /* q points to null at end of the string (or . of the .so version) */
+  prefix = XNEWVEC (char, q - p + 1);
+  strncpy (prefix, p, q - p);
+  prefix[q - p] = 0;
+  for (r = prefix; *r; r++)
+    if (!ISALNUM ((unsigned char)*r))
+      *r = '_';
+  if (debug)
+    notice ("\nwrite_c_file - output name is %s, prefix is %s\n",
+	    output_file, prefix);
+
+  initname = concat ("_GLOBAL__FI_", prefix, NULL);
+  fininame = concat ("_GLOBAL__FD_", prefix, NULL);
+
+  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);
+
+  if (frames)
+    {
+      write_list_with_asm (stream, "extern void *", frame_tables.first);
+
+      fprintf (stream, "\tstatic void *frame_table[] = {\n");
+      write_list (stream, "\t\t&", frame_tables.first);
+      fprintf (stream, "\t0\n};\n");
+
+      /* This must match what's in frame.h.  */
+      fprintf (stream, "struct object {\n");
+      fprintf (stream, "  void *pc_begin;\n");
+      fprintf (stream, "  void *pc_end;\n");
+      fprintf (stream, "  void *fde_begin;\n");
+      fprintf (stream, "  void *fde_array;\n");
+      fprintf (stream, "  __SIZE_TYPE__ count;\n");
+      fprintf (stream, "  struct object *next;\n");
+      fprintf (stream, "};\n");
+
+      fprintf (stream, "extern void __register_frame_info_table (void *, struct object *);\n");
+      fprintf (stream, "extern void *__deregister_frame_info (void *);\n");
+
+      fprintf (stream, "static void reg_frame () {\n");
+      fprintf (stream, "\tstatic struct object ob;\n");
+      fprintf (stream, "\t__register_frame_info_table (frame_table, &ob);\n");
+      fprintf (stream, "\t}\n");
+
+      fprintf (stream, "static void dereg_frame () {\n");
+      fprintf (stream, "\t__deregister_frame_info (frame_table);\n");
+      fprintf (stream, "\t}\n");
+    }
+
+  fprintf (stream, "void %s() {\n", initname);
+  if (constructors.number > 0 || frames)
+    {
+      fprintf (stream, "\tstatic entry_pt *ctors[] = {\n");
+      write_list (stream, "\t\t", constructors.first);
+      if (frames)
+	fprintf (stream, "\treg_frame,\n");
+      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 + frames);
+      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 || frames)
+    {
+      fprintf (stream, "\tstatic entry_pt *dtors[] = {\n");
+      write_list (stream, "\t\t", destructors.first);
+      if (frames)
+	fprintf (stream, "\tdereg_frame,\n");
+      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 + frames);
+    }
+  fprintf (stream, "}\n");
+
+  if (shared_obj)
+    {
+      COLLECT_SHARED_INIT_FUNC(stream, initname);
+      COLLECT_SHARED_FINI_FUNC(stream, fininame);
+    }
+}
+
+/* Write the constructor/destructor tables.  */
+
+#ifndef LD_INIT_SWITCH
+static void
+write_c_file_glob (FILE *stream, const char *name ATTRIBUTE_UNUSED)
+{
+  /* Write the tables as C code.  */
+
+  int frames = (frame_tables.number > 0);
+
+  fprintf (stream, "typedef void entry_pt();\n\n");
+
+  write_list_with_asm (stream, "extern entry_pt ", constructors.first);
+
+  if (frames)
+    {
+      write_list_with_asm (stream, "extern void *", frame_tables.first);
+
+      fprintf (stream, "\tstatic void *frame_table[] = {\n");
+      write_list (stream, "\t\t&", frame_tables.first);
+      fprintf (stream, "\t0\n};\n");
+
+      /* This must match what's in frame.h.  */
+      fprintf (stream, "struct object {\n");
+      fprintf (stream, "  void *pc_begin;\n");
+      fprintf (stream, "  void *pc_end;\n");
+      fprintf (stream, "  void *fde_begin;\n");
+      fprintf (stream, "  void *fde_array;\n");
+      fprintf (stream, "  __SIZE_TYPE__ count;\n");
+      fprintf (stream, "  struct object *next;\n");
+      fprintf (stream, "};\n");
+
+      fprintf (stream, "extern void __register_frame_info_table (void *, struct object *);\n");
+      fprintf (stream, "extern void *__deregister_frame_info (void *);\n");
+
+      fprintf (stream, "static void reg_frame () {\n");
+      fprintf (stream, "\tstatic struct object ob;\n");
+      fprintf (stream, "\t__register_frame_info_table (frame_table, &ob);\n");
+      fprintf (stream, "\t}\n");
+
+      fprintf (stream, "static void dereg_frame () {\n");
+      fprintf (stream, "\t__deregister_frame_info (frame_table);\n");
+      fprintf (stream, "\t}\n");
+    }
+
+  fprintf (stream, "\nentry_pt * __CTOR_LIST__[] = {\n");
+  fprintf (stream, "\t(entry_pt *) %d,\n", constructors.number + frames);
+  write_list (stream, "\t", constructors.first);
+  if (frames)
+    fprintf (stream, "\treg_frame,\n");
+  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 + frames);
+  write_list (stream, "\t", destructors.first);
+  if (frames)
+    fprintf (stream, "\tdereg_frame,\n");
+  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);
+}
+#endif /* ! LD_INIT_SWITCH */
+
+static void
+write_c_file (FILE *stream, const char *name)
+{
+#ifndef LD_INIT_SWITCH
+  if (! shared_obj)
+    write_c_file_glob (stream, name);
+  else
+#endif
+    write_c_file_stat (stream, name);
+}
+
+#ifdef COLLECT_EXPORT_LIST
+static void
+write_aix_file (FILE *stream, struct id *list)
+{
+  for (; list; list = list->next)
+    {
+      fputs (list->name, stream);
+      putc ('\n', stream);
+    }
+}
+#endif
+
+#ifdef OBJECT_FORMAT_NONE
+
+/* Check to make sure the file is an LTO object file.  */
+
+static bool
+maybe_lto_object_file (const char *prog_name)
+{
+  FILE *f;
+  unsigned char buf[4];
+  int i;
+
+  static unsigned char elfmagic[4] = { 0x7f, 'E', 'L', 'F' };
+  static unsigned char coffmagic[2] = { 0x4c, 0x01 };
+  static unsigned char coffmagic_x64[2] = { 0x64, 0x86 };
+  static unsigned char machomagic[4][4] = {
+    { 0xcf, 0xfa, 0xed, 0xfe },
+    { 0xce, 0xfa, 0xed, 0xfe },
+    { 0xfe, 0xed, 0xfa, 0xcf },
+    { 0xfe, 0xed, 0xfa, 0xce }
+  };
+
+  f = fopen (prog_name, "rb");
+  if (f == NULL)
+    return false;
+  if (fread (buf, sizeof (buf), 1, f) != 1)
+    buf[0] = 0;
+  fclose (f);
+
+  if (memcmp (buf, elfmagic, sizeof (elfmagic)) == 0
+      || memcmp (buf, coffmagic, sizeof (coffmagic)) == 0
+      || memcmp (buf, coffmagic_x64, sizeof (coffmagic_x64)) == 0)
+    return true;
+  for (i = 0; i < 4; i++)
+    if (memcmp (buf, machomagic[i], sizeof (machomagic[i])) == 0)
+      return true;
+
+  return false;
+}
+
+/* Generic version to scan the name list of the loaded program for
+   the symbols g++ uses for static constructors and destructors.  */
+
+static void
+scan_prog_file (const char *prog_name, scanpass which_pass,
+		scanfilter filter)
+{
+  void (*int_handler) (int);
+#ifdef SIGQUIT
+  void (*quit_handler) (int);
+#endif
+  char *real_nm_argv[4];
+  const char **nm_argv = CONST_CAST2 (const char **, char**, real_nm_argv);
+  int argc = 0;
+  struct pex_obj *pex;
+  const char *errmsg;
+  int err;
+  char *p, buf[1024];
+  FILE *inf;
+  int found_lto = 0;
+
+  if (which_pass == PASS_SECOND)
+    return;
+
+  /* LTO objects must be in a known format.  This check prevents
+     us from accepting an archive containing LTO objects, which
+     gcc cannot currently handle.  */
+  if (which_pass == PASS_LTOINFO && !maybe_lto_object_file (prog_name))
+    return;
+
+  /* If we do not have an `nm', complain.  */
+  if (nm_file_name == 0)
+    fatal_error ("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;
+
+  /* Trace if needed.  */
+  if (vflag)
+    {
+      const char **p_argv;
+      const 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);
+
+  pex = pex_init (PEX_USE_PIPES, "collect2", NULL);
+  if (pex == NULL)
+    fatal_error ("pex_init failed: %m");
+
+  errmsg = pex_run (pex, 0, nm_file_name, real_nm_argv, NULL, HOST_BIT_BUCKET,
+		    &err);
+  if (errmsg != NULL)
+    {
+      if (err != 0)
+	{
+	  errno = err;
+	  fatal_error ("%s: %m", _(errmsg));
+	}
+      else
+	fatal_error (errmsg);
+    }
+
+  int_handler  = (void (*) (int)) signal (SIGINT,  SIG_IGN);
+#ifdef SIGQUIT
+  quit_handler = (void (*) (int)) signal (SIGQUIT, SIG_IGN);
+#endif
+
+  inf = pex_read_output (pex, 0);
+  if (inf == NULL)
+    fatal_error ("can't open nm output: %m");
+
+  if (debug)
+    {
+      if (which_pass == PASS_LTOINFO)
+        fprintf (stderr, "\nnm output with LTO info marker symbol.\n");
+      else
+        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 (debug)
+        fprintf (stderr, "\t%s\n", buf);
+
+      if (which_pass == PASS_LTOINFO)
+        {
+          if (found_lto)
+            continue;
+
+          /* Look for the LTO info marker symbol, and add filename to
+             the LTO objects list if found.  */
+          for (p = buf; (ch = *p) != '\0' && ch != '\n'; p++)
+            if (ch == ' '  && p[1] == '_' && p[2] == '_'
+		&& (strncmp (p + (p[3] == '_' ? 2 : 1), "__gnu_lto_v1", 12) == 0)
+		&& ISSPACE (p[p[3] == '_' ? 14 : 13]))
+              {
+                add_lto_object (&lto_objects, prog_name);
+
+                /* We need to read all the input, so we can't just
+                   return here.  But we can avoid useless work.  */
+                found_lto = 1;
+
+                break;
+              }
+
+	  continue;
+        }
+
+      /* If it contains a constructor or destructor name, add the name
+	 to the appropriate list unless this is a kind of symbol we're
+	 not supposed to even consider.  */
+
+      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.
+	 Do not 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 SYM_CTOR:
+	  if (! (filter & SCAN_CTOR))
+	    break;
+	  if (which_pass != PASS_LIB)
+	    add_to_list (&constructors, name);
+	  break;
+
+	case SYM_DTOR:
+	  if (! (filter & SCAN_DTOR))
+	    break;
+	  if (which_pass != PASS_LIB)
+	    add_to_list (&destructors, name);
+	  break;
+
+	case SYM_INIT:
+	  if (! (filter & SCAN_INIT))
+	    break;
+	  if (which_pass != PASS_LIB)
+	    fatal_error ("init function found in object %s", prog_name);
+#ifndef LD_INIT_SWITCH
+	  add_to_list (&constructors, name);
+#endif
+	  break;
+
+	case SYM_FINI:
+	  if (! (filter & SCAN_FINI))
+	    break;
+	  if (which_pass != PASS_LIB)
+	    fatal_error ("fini function found in object %s", prog_name);
+#ifndef LD_FINI_SWITCH
+	  add_to_list (&destructors, name);
+#endif
+	  break;
+
+	case SYM_DWEH:
+	  if (! (filter & SCAN_DWEH))
+	    break;
+	  if (which_pass != PASS_LIB)
+	    add_to_list (&frame_tables, name);
+	  break;
+
+	default:		/* not a constructor or destructor */
+	  continue;
+	}
+    }
+
+  if (debug)
+    fprintf (stderr, "\n");
+
+  do_wait (nm_file_name, pex);
+
+  signal (SIGINT,  int_handler);
+#ifdef SIGQUIT
+  signal (SIGQUIT, quit_handler);
+#endif
+}
+
+#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 (const char *prog_name)
+{
+  static struct head libraries;		/* list of shared libraries found */
+  struct id *list;
+  void (*int_handler) (int);
+#ifdef SIGQUIT
+  void (*quit_handler) (int);
+#endif
+  char *real_ldd_argv[4];
+  const char **ldd_argv = CONST_CAST2 (const char **, char **, real_ldd_argv);
+  int argc = 0;
+  struct pex_obj *pex;
+  const char *errmsg;
+  int err;
+  char buf[1024];
+  FILE *inf;
+
+  /* If we do not 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;
+
+  /* Trace if needed.  */
+  if (vflag)
+    {
+      const char **p_argv;
+      const 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);
+
+  pex = pex_init (PEX_USE_PIPES, "collect2", NULL);
+  if (pex == NULL)
+    fatal_error ("pex_init failed: %m");
+
+  errmsg = pex_run (pex, 0, ldd_file_name, real_ldd_argv, NULL, NULL, &err);
+  if (errmsg != NULL)
+    {
+      if (err != 0)
+	{
+	  errno = err;
+	  fatal_error ("%s: %m", _(errmsg));
+	}
+      else
+	fatal_error (errmsg);
+    }
+
+  int_handler  = (void (*) (int)) signal (SIGINT,  SIG_IGN);
+#ifdef SIGQUIT
+  quit_handler = (void (*) (int)) signal (SIGQUIT, SIG_IGN);
+#endif
+
+  inf = pex_read_output (pex, 0);
+  if (inf == NULL)
+    fatal_error ("can't open ldd output: %m");
+
+  if (debug)
+    notice ("\nldd output with constructors/destructors.\n");
+
+  /* Read each line of ldd output.  */
+  while (fgets (buf, sizeof buf, inf) != (char *) 0)
+    {
+      int 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_error ("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_error ("unable to open dynamic dependency '%s'", buf);
+
+      if (debug)
+	fprintf (stderr, "\t%s\n", buf);
+    }
+  if (debug)
+    fprintf (stderr, "\n");
+
+  do_wait (ldd_file_name, pex);
+
+  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, SCAN_ALL);
+}
+
+#endif /* LDD_SUFFIX */
+
+#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).st == stGlobal)
+#   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
+#   if defined (C_WEAKEXT)
+#     define GCC_OK_SYMBOL(X) \
+       (((X).n_sclass == C_EXT || (X).n_sclass == C_WEAKEXT) && \
+	((X).n_scnum > N_UNDEF) && \
+	(aix64_flag \
+	 || (((X).n_type & N_TMASK) == (DT_NON << N_BTSHFT) \
+	     || ((X).n_type & N_TMASK) == (DT_FCN << N_BTSHFT))))
+#     define GCC_UNDEF_SYMBOL(X) \
+       (((X).n_sclass == C_EXT || (X).n_sclass == C_WEAKEXT) && \
+	((X).n_scnum == N_UNDEF))
+#   else
+#     define GCC_OK_SYMBOL(X) \
+       (((X).n_sclass == C_EXT) && \
+	((X).n_scnum > N_UNDEF) && \
+	(aix64_flag \
+	 || (((X).n_type & N_TMASK) == (DT_NON << N_BTSHFT) \
+	     || ((X).n_type & N_TMASK) == (DT_FCN << N_BTSHFT))))
+#     define GCC_UNDEF_SYMBOL(X) \
+       (((X).n_sclass == C_EXT) && ((X).n_scnum == N_UNDEF))
+#   endif
+#   define GCC_SYMINC(X)	((X).n_numaux+1)
+#   define GCC_SYMZERO(X)	0
+
+/* 0757 = U803XTOCMAGIC (AIX 4.3) and 0767 = U64_TOCMAGIC (AIX V5) */
+#if TARGET_AIX_VERSION >= 51
+#   define GCC_CHECK_HDR(X) \
+     (((HEADER (X).f_magic == U802TOCMAGIC && ! aix64_flag) \
+       || (HEADER (X).f_magic == 0767 && aix64_flag)) \
+      && !(HEADER (X).f_flags & F_LOADONLY))
+#else
+#   define GCC_CHECK_HDR(X) \
+     (((HEADER (X).f_magic == U802TOCMAGIC && ! aix64_flag) \
+       || (HEADER (X).f_magic == 0757 && aix64_flag)) \
+      && !(HEADER (X).f_flags & F_LOADONLY))
+#endif
+
+#endif
+
+#ifdef COLLECT_EXPORT_LIST
+/* Array of standard AIX libraries which should not
+   be scanned for ctors/dtors.  */
+static const char *const aix_std_libs[] = {
+  "/unix",
+  "/lib/libc.a",
+  "/lib/libm.a",
+  "/lib/libc_r.a",
+  "/lib/libm_r.a",
+  "/usr/lib/libc.a",
+  "/usr/lib/libm.a",
+  "/usr/lib/libc_r.a",
+  "/usr/lib/libm_r.a",
+  "/usr/lib/threads/libc.a",
+  "/usr/ccs/lib/libc.a",
+  "/usr/ccs/lib/libm.a",
+  "/usr/ccs/lib/libc_r.a",
+  "/usr/ccs/lib/libm_r.a",
+  NULL
+};
+
+/* This function checks the filename and returns 1
+   if this name matches the location of a standard AIX library.  */
+static int ignore_library (const char *);
+static int
+ignore_library (const char *name)
+{
+  const char *const *p;
+  size_t length;
+
+  if (target_system_root[0] != '\0')
+    {
+      length = strlen (target_system_root);
+      if (strncmp (name, target_system_root, length) != 0)
+	return 0;
+      name += length;
+    }
+  for (p = &aix_std_libs[0]; *p != NULL; ++p)
+    if (strcmp (name, *p) == 0)
+      return 1;
+  return 0;
+}
+#endif /* COLLECT_EXPORT_LIST */
+
+#if defined (HAVE_DECL_LDGETNAME) && !HAVE_DECL_LDGETNAME
+extern char *ldgetname (LDFILE *, GCC_SYMENT *);
+#endif
+
+/* COFF version to scan the name list of the loaded program for
+   the symbols g++ uses for static constructors and destructors.  */
+
+static void
+scan_prog_file (const char *prog_name, scanpass which_pass,
+		scanfilter filter)
+{
+  LDFILE *ldptr = NULL;
+  int sym_index, sym_count;
+  int is_shared = 0;
+
+  if (which_pass != PASS_FIRST && which_pass != PASS_OBJ)
+    return;
+
+#ifdef COLLECT_EXPORT_LIST
+  /* We do not need scanning for some standard C libraries.  */
+  if (which_pass == PASS_FIRST && ignore_library (prog_name))
+    return;
+
+  /* On AIX we have a loop, because there is not much difference
+     between an object and an archive. This trick allows us to
+     eliminate scan_libraries() function.  */
+  do
+    {
+#endif
+      /* Some platforms (e.g. OSF4) declare ldopen as taking a
+	 non-const char * filename parameter, even though it will not
+	 modify that string.  So we must cast away const-ness here,
+	 using CONST_CAST to prevent complaints from -Wcast-qual.  */
+      if ((ldptr = ldopen (CONST_CAST (char *, prog_name), ldptr)) != NULL)
+	{
+	  if (! MY_ISCOFF (HEADER (ldptr).f_magic))
+	    fatal_error ("%s: not a COFF file", prog_name);
+
+	  if (GCC_CHECK_HDR (ldptr))
+	    {
+	      sym_count = GCC_SYMBOLS (ldptr);
+	      sym_index = GCC_SYMZERO (ldptr);
+
+#ifdef COLLECT_EXPORT_LIST
+	      /* Is current archive member a shared object?  */
+	      is_shared = HEADER (ldptr).f_flags & F_SHROBJ;
+#endif
+
+	      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 SYM_CTOR:
+			  if (! (filter & SCAN_CTOR))
+			    break;
+			  if (! is_shared)
+			    add_to_list (&constructors, name);
+#if defined (COLLECT_EXPORT_LIST) && !defined (LD_INIT_SWITCH)
+			  if (which_pass == PASS_OBJ)
+			    add_to_list (&exports, name);
+#endif
+			  break;
+
+			case SYM_DTOR:
+			  if (! (filter & SCAN_DTOR))
+			    break;
+			  if (! is_shared)
+			    add_to_list (&destructors, name);
+#if defined (COLLECT_EXPORT_LIST) && !defined (LD_INIT_SWITCH)
+			  if (which_pass == PASS_OBJ)
+			    add_to_list (&exports, name);
+#endif
+			  break;
+
+#ifdef COLLECT_EXPORT_LIST
+			case SYM_INIT:
+			  if (! (filter & SCAN_INIT))
+			    break;
+#ifndef LD_INIT_SWITCH
+			  if (is_shared)
+			    add_to_list (&constructors, name);
+#endif
+			  break;
+
+			case SYM_FINI:
+			  if (! (filter & SCAN_FINI))
+			    break;
+#ifndef LD_INIT_SWITCH
+			  if (is_shared)
+			    add_to_list (&destructors, name);
+#endif
+			  break;
+#endif
+
+			case SYM_DWEH:
+			  if (! (filter & SCAN_DWEH))
+			    break;
+			  if (! is_shared)
+			    add_to_list (&frame_tables, name);
+#if defined (COLLECT_EXPORT_LIST) && !defined (LD_INIT_SWITCH)
+			  if (which_pass == PASS_OBJ)
+			    add_to_list (&exports, name);
+#endif
+			  break;
+
+			default:	/* not a constructor or destructor */
+#ifdef COLLECT_EXPORT_LIST
+			  /* Explicitly export all global symbols when
+			     building a shared object on AIX, but do not
+			     re-export symbols from another shared object
+			     and do not export symbols if the user
+			     provides an explicit export list.  */
+			  if (shared_obj && !is_shared
+			      && which_pass == PASS_OBJ && !export_flag)
+			    add_to_list (&exports, name);
+#endif
+			  continue;
+			}
+
+		      if (debug)
+#if !defined(EXTENDED_COFF)
+			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
+			fprintf (stderr,
+				 "\tiss = %5d, value = %5ld, index = %5d, name = %s\n",
+				 symbol.iss, (long) symbol.value, symbol.index, name);
+#endif
+		    }
+		}
+	    }
+#ifdef COLLECT_EXPORT_LIST
+	  else
+	    {
+	      /* If archive contains both 32-bit and 64-bit objects,
+		 we want to skip objects in other mode so mismatch normal.  */
+	      if (debug)
+		fprintf (stderr, "%s : magic=%o aix64=%d mismatch\n",
+			 prog_name, HEADER (ldptr).f_magic, aix64_flag);
+	    }
+#endif
+	}
+      else
+	{
+	  fatal_error ("%s: cannot open as COFF file", prog_name);
+	}
+#ifdef COLLECT_EXPORT_LIST
+      /* On AIX loop continues while there are more members in archive.  */
+    }
+  while (ldclose (ldptr) == FAILURE);
+#else
+  /* Otherwise we simply close ldptr.  */
+  (void) ldclose(ldptr);
+#endif
+}
+#endif /* OBJECT_FORMAT_COFF */
+
+#ifdef COLLECT_EXPORT_LIST
+/* Given a library name without "lib" prefix, this function
+   returns a full library name including a path.  */
+static char *
+resolve_lib_name (const char *name)
+{
+  char *lib_buf;
+  int i, j, l = 0;
+  /* Library extensions for AIX dynamic linking.  */
+  const char * const libexts[2] = {"a", "so"};
+
+  for (i = 0; libpaths[i]; i++)
+    if (libpaths[i]->max_len > l)
+      l = libpaths[i]->max_len;
+
+  lib_buf = XNEWVEC (char, l + strlen(name) + 10);
+
+  for (i = 0; libpaths[i]; i++)
+    {
+      struct prefix_list *list = libpaths[i]->plist;
+      for (; list; list = list->next)
+	{
+	  /* The following lines are needed because path_prefix list
+	     may contain directories both with trailing DIR_SEPARATOR and
+	     without it.  */
+	  const char *p = "";
+	  if (!IS_DIR_SEPARATOR (list->prefix[strlen(list->prefix)-1]))
+	    p = "/";
+	  for (j = 0; j < 2; j++)
+	    {
+	      sprintf (lib_buf, "%s%slib%s.%s",
+		       list->prefix, p, name,
+		       libexts[(j + aixrtl_flag) % 2]);
+	      if (debug) fprintf (stderr, "searching for: %s\n", lib_buf);
+	      if (file_exists (lib_buf))
+		{
+		  if (debug) fprintf (stderr, "found: %s\n", lib_buf);
+		  return (lib_buf);
+		}
+	    }
+	}
+    }
+  if (debug)
+    fprintf (stderr, "not found\n");
+  else
+    fatal_error ("library lib%s not found", name);
+  return (NULL);
+}
+#endif /* COLLECT_EXPORT_LIST */
+
+#ifdef COLLECT_RUN_DSYMUTIL
+static int flag_dsym = false;
+static int flag_idsym = false;
+
+static void
+process_args (int *argcp, char **argv) {
+  int i, j;
+  int argc = *argcp;
+  for (i=0; i<argc; ++i)
+    {
+      if (strcmp (argv[i], "-dsym") == 0)
+	{
+	  flag_dsym = true;
+	  /* Remove the flag, as we handle all processing for it.  */
+	  j = i;
+	  do
+	    argv[j] = argv[j+1];
+	  while (++j < argc);
+	  --i;
+	  argc = --(*argcp);
+	}
+      else if (strcmp (argv[i], "-idsym") == 0)
+	{
+	  flag_idsym = true;
+	  /* Remove the flag, as we handle all processing for it.  */
+	  j = i;
+	  do
+	    argv[j] = argv[j+1];
+	  while (++j < argc);
+	  --i;
+	  argc = --(*argcp);
+	}
+    }
+}
+
+static void
+do_dsymutil (const char *output_file) {
+  const char *dsymutil = DSYMUTIL + 1;
+  struct pex_obj *pex;
+  char **real_argv = XCNEWVEC (char *, 3);
+  const char ** argv = CONST_CAST2 (const char **, char **,
+				    real_argv);
+
+  argv[0] = dsymutil;
+  argv[1] = output_file;
+  argv[2] = (char *) 0;
+
+  pex = collect_execute (dsymutil, real_argv, NULL, NULL, PEX_LAST | PEX_SEARCH);
+  do_wait (dsymutil, pex);
+}
+
+static void
+post_ld_pass (bool temp_file) {
+  if (!(temp_file && flag_idsym) && !flag_dsym)
+    return;
+      
+  do_dsymutil (output_file);
+}
+#else
+static void
+process_args (int *argcp ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED) { }
+static void post_ld_pass (bool temp_file ATTRIBUTE_UNUSED) { }
+#endif