* collect2.c (scan_libraries): Use CONST_CAST2 to perform char ** to

[pf3gnuchains/gcc-fork.git] / gcc / collect2.c

diff --git a/gcc/collect2.c b/gcc/collect2.c
index 3f62dfe..aed4c67 100644 (file)
--- a/gcc/collect2.c
+++ b/gcc/collect2.c
@@ -1,7 +1,7 @@
 /* Collect static initialization info into data structures that can be
    traversed by C++ initialization and finalization routines.
    Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998,
-   1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008
+   1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008, 2009
    Free Software Foundation, Inc.
    Contributed by Chris Smith (csmith@convex.com).
    Heavily modified by Michael Meissner (meissner@cygnus.com),
@@ -42,6 +42,7 @@ along with GCC; see the file COPYING3.  If not see
 #define COLLECT
 
 #include "collect2.h"
+#include "collect2-aix.h"
 #include "demangle.h"
 #include "obstack.h"
 #include "intl.h"
@@ -54,7 +55,9 @@ along with GCC; see the file COPYING3.  If not see
    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
@@ -72,6 +75,7 @@ along with GCC; see the file COPYING3.  If not see
 
 #ifdef OBJECT_FORMAT_COFF
 
+#ifndef CROSS_DIRECTORY_STRUCTURE
 #include <a.out.h>
 #include <ar.h>
 
@@ -86,6 +90,7 @@ along with GCC; see the file COPYING3.  If not see
 #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
@@ -212,6 +217,14 @@ 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
+
 /* Structure to hold all the directories in which to search for files to
    execute.  */
 
@@ -538,7 +551,7 @@ dump_file (const char *name, FILE *to)
 static symkind
 is_ctor_dtor (const char *s)
 {
-  struct names { const char *const name; const int len; const int ret;
+  struct names { const char *const name; const int len; symkind ret;
     const int two_underscores; };
 
   const struct names *p;
@@ -857,9 +870,12 @@ main (int argc, char **argv)
   /* Do not invoke xcalloc before this point, since locale needs to be
      set first, in case a diagnostic is issued.  */
 
-  ld1 = (const char **)(ld1_argv = XCNEWVEC (char *, argc+4));
-  ld2 = (const char **)(ld2_argv = XCNEWVEC (char *, argc+11));
-  object = (const char **)(object_lst = XCNEWVEC (char *, argc));
+  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;
@@ -904,7 +920,8 @@ main (int argc, char **argv)
      -fno-exceptions -w */
   num_c_args += 5;
 
-  c_ptr = (const char **) (c_argv = XCNEWVEC (char *, num_c_args));
+  c_argv = XCNEWVEC (char *, num_c_args);
+  c_ptr = CONST_CAST2 (const char **, char **, c_argv);
 
   if (argc < 2)
     fatal ("no arguments");
@@ -1150,7 +1167,9 @@ main (int argc, char **argv)
 #else
 #if LINK_ELIMINATE_DUPLICATE_LDIRECTORIES
            case 'L':
-             if (is_in_args (arg, (const char **) ld1_argv, ld1-1))
+             if (is_in_args (arg,
+                             CONST_CAST2 (const char **, char **, ld1_argv),
+                             ld1 - 1))
                --ld1;
              break;
 #endif /* LINK_ELIMINATE_DUPLICATE_LDIRECTORIES */
@@ -1215,6 +1234,8 @@ main (int argc, char **argv)
                  ld1--;
                  ld2--;
                }
+             else if (strncmp (arg, "--sysroot=", 10) == 0)
+               target_system_root = arg + 10;
              break;
            }
        }
@@ -1260,7 +1281,8 @@ main (int argc, char **argv)
   /* The AIX linker will discard static constructors in object files if
      nothing else in the file is referenced, so look at them first.  */
   {
-      const char **export_object_lst = (const char **)object_lst;
+      const char **export_object_lst 
+       = CONST_CAST2 (const char **, char **, object_lst);
 
       while (export_object_lst < object)
        scan_prog_file (*export_object_lst++, PASS_OBJ);
@@ -1406,7 +1428,8 @@ main (int argc, char **argv)
       if (strip_flag)
        {
          char **real_strip_argv = XCNEWVEC (char *, 3);
-         const char ** strip_argv = (const char **) real_strip_argv;
+         const char ** strip_argv = CONST_CAST2 (const char **, char **,
+                                                 real_strip_argv);
 
          strip_argv[0] = strip_file_name;
          strip_argv[1] = output_file;
@@ -2090,7 +2113,7 @@ scan_prog_file (const char *prog_name, enum pass which_pass)
   void (*quit_handler) (int);
 #endif
   char *real_nm_argv[4];
-  const char **nm_argv = (const char **) real_nm_argv;
+  const char **nm_argv = CONST_CAST2 (const char **, char**, real_nm_argv);
   int argc = 0;
   struct pex_obj *pex;
   const char *errmsg;
@@ -2248,7 +2271,7 @@ scan_libraries (const char *prog_name)
   void (*quit_handler) (int);
 #endif
   char *real_ldd_argv[4];
-  const char **ldd_argv = (const char **) real_ldd_argv;
+  const char **ldd_argv = CONST_CAST2 (const char **, char **, real_ldd_argv);
   int argc = 0;
   struct pex_obj *pex;
   const char *errmsg;
@@ -2404,7 +2427,7 @@ scan_libraries (const char *prog_name)
 #   define GCC_SYMZERO(X)      0
 
 /* 0757 = U803XTOCMAGIC (AIX 4.3) and 0767 = U64_TOCMAGIC (AIX V5) */
-#ifdef _AIX51
+#if TARGET_AIX_VERSION >= 51
 #   define GCC_CHECK_HDR(X) \
      ((HEADER (X).f_magic == U802TOCMAGIC && ! aix64_flag) \
       || (HEADER (X).f_magic == 0767 && aix64_flag))
@@ -2443,9 +2466,19 @@ static int ignore_library (const char *);
 static int
 ignore_library (const char *name)
 {
-  const char *const *p = &aix_std_libs[0];
-  while (*p++ != NULL)
-    if (! strcmp (name, *p)) return 1;
+  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 */