Makefile.in (tlink.o): Don't depend on toplev.h.

	* Makefile.in (tlink.o): Don't depend on toplev.h.

	* collect2.c (c_file, o_file, export_file, import_file, ldout,
	output_file, nm_file_name, ldd_file_name, strip_file_name,
	c_file_name, prefix_list, libexts, is_ctor_dtor, find_a_file,
	add_prefix, prefix_from_env, prefix_from_string, do_wait,
	fork_execute, maybe_unlink, add_to_list,
	extract_init_priority, write_list, dump_list,
	dump_prefix_list, write_list_with_asm, write_c_file,
	write_c_file_stat, write_c_file_glob, scan_prog_file,
	scan_libraries, is_in_list, resolve_lib_name, use_import_list,
	ignore_library, extract_string, notice, dump_file, target_machine,
	collect_wait, collect_execute, libname, locatelib, aix_std_libs,
	read_file, print_load_command): Constify a char*.
	(fdopen, error, fatal, fatal_perror): Don't prototype.
	(my_strerror): Remove.  All callers use xstrerror instead.
	(xcalloc, xmalloc, xrealloc, xstrdup, putenv): Remove definitions.
	(main): Add prototype.  Constify lots of char* ptrs.  Change calls
	to xcalloc/strcpy/strcat/...  to one call to concat.
	(main, scan_prog_file, scan_libraries): Use an intermediate
	`const char **' to build an argv array.
	(mapfile, libselect, libcompare, locatelib): Add prototypes.

	* collect2.h (collect_execute, collect_wait, dump_file,
	file_exists): Constify a char*.
	(ldout, c_file_name, temporary_obstack, permanent_obstack,
	temporary_firstobj, vflag, debug): Add extern declarations.
	(fancy_abort, error, notice, fatal, fatal_perror): Add prototypes.

	* tlink.c: Don't include toplev.h.
	(vflag, debug, ldout, c_file_name, temporary_obstack,
	permanent_obstack, temporary_firstobj): Don't declare.
	(tlink_execute, frob_extension, symbol_hash_lookup,
	file_hash_lookup, demangled_hash_lookup, tlink_init, freadsym,
	recompile_files, read_repo_files, demangle_new_symbols,
	scan_linker_output): Constify a char*.
	(symbol_hash_newfunc, file_hash_newfunc, demangled_hash_newfunc,
	do_tlink): Mark parameters with ATTRIBUTE_UNUSED.

From-SVN: r29087

1 files changed, 19 insertions, 28 deletions

diff --git a/gcc/tlink.c b/gcc/tlink.c
index 55c66dc..a3df317 100644
--- a/gcc/tlink.c
+++ b/gcc/tlink.c
@@ -25,7 +25,6 @@ Boston, MA 02111-1307, USA.  */
 #include "system.h"
 #include "hash.h"
 #include "demangle.h"
-#include "toplev.h"
 #include "collect2.h"
 
 #define MAX_ITERATIONS 17
@@ -34,14 +33,6 @@ Boston, MA 02111-1307, USA.  */
 #define obstack_chunk_alloc xmalloc
 #define obstack_chunk_free free
 
-/* Defined in collect2.c.  */
-extern int vflag, debug;
-extern char *ldout;
-extern char *c_file_name;
-extern struct obstack temporary_obstack;
-extern struct obstack permanent_obstack;
-extern char * temporary_firstobj;
-
 /* Defined in the automatically-generated underscore.c.  */
 extern int prepends_underscore;
 
@@ -95,8 +86,8 @@ static symbol * symbol_pop PARAMS ((void));
 static void file_push PARAMS ((file *));
 static file * file_pop PARAMS ((void));
 static void tlink_init PARAMS ((void));
-static int tlink_execute PARAMS ((char *, char **, char *));
-static char * frob_extension PARAMS ((char *, const char *));
+static int tlink_execute PARAMS ((const char *, char **, const char *));
+static char * frob_extension PARAMS ((const char *, const char *));
 static char * obstack_fgets PARAMS ((FILE *, struct obstack *));
 static char * tfgets PARAMS ((FILE *));
 static char * pfgets PARAMS ((FILE *));
@@ -115,7 +106,7 @@ static struct hash_entry *
 symbol_hash_newfunc (entry, table, string)
      struct hash_entry *entry;
      struct hash_table *table;
-     hash_table_key string;
+     hash_table_key string ATTRIBUTE_UNUSED;
 {
   struct symbol_hash_entry *ret = (struct symbol_hash_entry *) entry;
   if (ret == NULL)
@@ -140,7 +131,7 @@ symbol_hash_lookup (string, create)
      boolean create;
 {
   return ((struct symbol_hash_entry *)
-	  hash_lookup (&symbol_table, (hash_table_key) string, 
+	  hash_lookup (&symbol_table, (const hash_table_key) string, 
 		       create, string_copy));
 }
 
@@ -153,7 +144,7 @@ static struct hash_entry *
 file_hash_newfunc (entry, table, string)
      struct hash_entry *entry;
      struct hash_table *table;
-     hash_table_key string;
+     hash_table_key string ATTRIBUTE_UNUSED;
 {
    struct file_hash_entry *ret = (struct file_hash_entry *) entry;
   if (ret == NULL)
@@ -177,7 +168,7 @@ file_hash_lookup (string)
      const char *string;
 {
   return ((struct file_hash_entry *)
-	  hash_lookup (&file_table, (hash_table_key) string, true, 
+	  hash_lookup (&file_table, (const hash_table_key) string, true, 
 		       string_copy));
 }
 
@@ -190,7 +181,7 @@ static struct hash_entry *
 demangled_hash_newfunc (entry, table, string)
      struct hash_entry *entry;
      struct hash_table *table;
-     hash_table_key string;
+     hash_table_key string ATTRIBUTE_UNUSED;
 {
   struct demangled_hash_entry *ret = (struct demangled_hash_entry *) entry;
   if (ret == NULL)
@@ -212,7 +203,7 @@ demangled_hash_lookup (string, create)
      boolean create;
 {
   return ((struct demangled_hash_entry *)
-	  hash_lookup (&demangled_table, (hash_table_key) string, 
+	  hash_lookup (&demangled_table, (const hash_table_key) string, 
 		       create, string_copy));
 }
 
@@ -296,7 +287,7 @@ file_pop ()
 static void
 tlink_init ()
 {
-  char *p;
+  const char *p;
 
   hash_table_init (&symbol_table, symbol_hash_newfunc, string_hash,
 		   string_compare);
@@ -322,9 +313,9 @@ tlink_init ()
 
 static int
 tlink_execute (prog, argv, redir)
-     char *prog;
+     const char *prog;
      char **argv;
-     char *redir;
+     const char *redir;
 {
   collect_execute (prog, argv, redir);
   return collect_wait (prog);
@@ -332,10 +323,10 @@ tlink_execute (prog, argv, redir)
 
 static char *
 frob_extension (s, ext)
-     char *s;
+     const char *s;
      const char *ext;
 {
-  char *p = rindex (s, '/');
+  const char *p = rindex (s, '/');
   if (! p)
     p = s;
   p = rindex (p, '.');
@@ -391,7 +382,7 @@ freadsym (stream, f, chosen)
   symbol *sym;
 
   {
-    char *name = tfgets (stream);
+    const char *name = tfgets (stream);
     sym = symbol_hash_lookup (name, true);
   }
 
@@ -507,7 +498,7 @@ recompile_files ()
     {
       char *line, *command;
       FILE *stream = fopen ((char*) f->root.key, "r");
-      char *outname = frob_extension ((char*) f->root.key, ".rnw");
+      const char *outname = frob_extension ((char*) f->root.key, ".rnw");
       FILE *output = fopen (outname, "w");
 
       while ((line = tfgets (stream)) != NULL)
@@ -559,7 +550,7 @@ read_repo_files (object_lst)
 
   for (; *object; object++)
     {
-      char *p = frob_extension (*object, ".rpo");
+      const char *p = frob_extension (*object, ".rpo");
       file *f;
 
       if (! file_exists (p))
@@ -586,7 +577,7 @@ demangle_new_symbols ()
   while ((sym = symbol_pop ()) != NULL)
     {
       demangled *dem;
-      char *p = cplus_demangle ((char*) sym->root.key, 
+      const char *p = cplus_demangle ((char*) sym->root.key, 
 				DMGL_PARAMS | DMGL_ANSI);
 
       if (! p)
@@ -635,7 +626,7 @@ scan_linker_output (fname)
       if (! sym && ! end)
 	/* Try a mangled name in quotes.  */
 	{
-	  char *oldq = q+1;
+	  const char *oldq = q+1;
 	  demangled *dem = 0;
 	  q = 0;
 
@@ -694,7 +685,7 @@ scan_linker_output (fname)
 
 void
 do_tlink (ld_argv, object_lst)
-     char **ld_argv, **object_lst;
+     char **ld_argv, **object_lst ATTRIBUTE_UNUSED;
 {
   int exit = tlink_execute ("ld", ld_argv, ldout);