collect2.c (static_obj): New variable.

2018-06-19  Tony Reix  <tony.reix@atos.com>
            Damien Bergamini  <damien.bergamini@atos.com>
            David Edelsohn  <dje.gcc@gmail.com>

        * collect2.c (static_obj): New variable.
        (static_libs): New variable.
        (is_in_list): Uncomment declaration.
        (main): Track AIX libraries linked statically.
        (is_in_list): Uncomment definition.
        (scan_prog_file): Don't add AIX shared libraries initializer
        to constructor list if linking statically.

Co-Authored-By: Damien Bergamini <damien.bergamini@atos.com>
Co-Authored-By: David Edelsohn <dje.gcc@gmail.com>
From-SVN: r261759

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 7e93801..bf2a823 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,15 @@
+2018-06-19  Tony Reix  <tony.reix@atos.com>
+           Damien Bergamini  <damien.bergamini@atos.com>
+           David Edelsohn  <dje.gcc@gmail.com>
+
+       * collect2.c (static_obj): New variable.
+       (static_libs): New variable.
+       (is_in_list): Uncomment declaration.
+       (main): Track AIX libraries linked statically.
+       (is_in_list): Uncomment definition.
+       (scan_prog_file): Don't add AIX shared libraries initializer
+       to constructor list if linking statically.
+
 2018-06-19  Max Filippov  <jcmvbkbc@gmail.com>
 
        * config/xtensa/xtensa.md (UNSPEC_FRAME_BLOCKAGE): New unspec

diff --git a/gcc/collect2.c b/gcc/collect2.c
index f26bc59..783dce8 100644 (file)
--- a/gcc/collect2.c
+++ b/gcc/collect2.c
@@ -201,6 +201,7 @@ static enum lto_mode_d lto_mode = LTO_MODE_NONE;
 bool helpflag;                 /* true if --help */
 
 static int shared_obj;                 /* true if -shared */
+static int static_obj;                 /* true if -static */
 
 static const char *c_file;             /* <xxx>.c for constructor/destructor list.  */
 static const char *o_file;             /* <xxx>.o for constructor/destructor list.  */
@@ -255,6 +256,7 @@ 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 head static_libs;             /* list of statically linked 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,
@@ -320,9 +322,7 @@ static void write_c_file_glob (FILE *, const char *);
 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
@@ -911,6 +911,7 @@ main (int argc, char **argv)
   int first_file;
   int num_c_args;
   char **old_argv;
+  bool is_static = false;
   int i;
 
   for (i = 0; i < USE_LD_MAX; i++)
@@ -1241,6 +1242,8 @@ main (int argc, char **argv)
        *c_ptr++ = xstrdup (q);
       if (strcmp (q, "-shared") == 0)
        shared_obj = 1;
+      if (strcmp (q, "-static") == 0)
+       static_obj = 1;
       if (*q == '-' && q[1] == 'B')
        {
          *c_ptr++ = xstrdup (q);
@@ -1269,6 +1272,7 @@ main (int argc, char **argv)
   /* Parse arguments.  Remember output file spec, pass the rest to ld.  */
   /* After the first file, put in the c++ rt0.  */
 
+  is_static = static_obj;
   first_file = 1;
   while ((arg = *++argv) != (char *) 0)
     {
@@ -1374,6 +1378,18 @@ main (int argc, char **argv)
 #endif
               break;
 
+#ifdef COLLECT_EXPORT_LIST
+           case 'b':
+             if (!strcmp (arg, "-bstatic"))
+               {
+                 is_static = true;
+               }
+             else if (!strcmp (arg, "-bdynamic") || !strcmp (arg, "-bshared"))
+               {
+                 is_static = false;
+               }
+             break;
+#endif
            case 'l':
              if (first_file)
                {
@@ -1390,6 +1406,8 @@ main (int argc, char **argv)
 
                /* Saving a full library name.  */
                add_to_list (&libs, s);
+               if (is_static)
+                   add_to_list (&static_libs, s);
              }
 #endif
              break;
@@ -1490,6 +1508,8 @@ main (int argc, char **argv)
            {
              /* Saving a full library name.  */
              add_to_list (&libs, arg);
+             if (is_static)
+               add_to_list (&static_libs, arg);
            }
 #endif
        }
@@ -1501,6 +1521,8 @@ main (int argc, char **argv)
     {
       fprintf (stderr, "List of libraries:\n");
       dump_list (stderr, "\t", libs.first);
+      fprintf (stderr, "List of statically linked libraries:\n");
+      dump_list (stderr, "\t", static_libs.first);
     }
 
   /* The AIX linker will discard static constructors in object files if
@@ -1525,9 +1547,11 @@ main (int argc, char **argv)
       this_filter &= ~SCAN_DWEH;
 #endif
 
+    /* Scan object files.  */
     while (export_object_lst < object)
       scan_prog_file (*export_object_lst++, PASS_OBJ, this_filter);
 
+    /* Scan libraries.  */
     for (; list; list = list->next)
       scan_prog_file (list->name, PASS_FIRST, this_filter);
 
@@ -1975,7 +1999,6 @@ write_list (FILE *stream, const char *prefix, struct id *list)
 
 #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)
 {
@@ -1986,7 +2009,6 @@ is_in_list (const char *prefix, struct id *list)
     }
     return 0;
 }
-#endif
 #endif /* COLLECT_EXPORT_LIST */
 
 /* Added for debugging purpose.  */
@@ -2818,7 +2840,12 @@ scan_prog_file (const char *prog_name, scanpass which_pass,
                        case SYM_AIXI:
                          if (! (filter & SCAN_CTOR))
                            break;
-                         if (is_shared && !aixlazy_flag)
+                         if (is_shared && !aixlazy_flag
+#ifdef COLLECT_EXPORT_LIST
+                             && ! static_obj
+                             && ! is_in_list (prog_name, static_libs.first)
+#endif
+                             )
                            add_to_list (&constructors, name);
                          break;