* elflink.h (elf_bfd_final_link): Don't output initial dummy

	symbol or section symbols if stripping all symbols and this is not
	a relocateable link.  Don't output the symbol string table if
	there are no symbols.
	(elf_link_flush_output_syms): Don't do anything if there are no
	symbols to flush.

diff --git a/bfd/ChangeLog b/bfd/ChangeLog
index 2a3afef..53af36f 100644 (file)
--- a/bfd/ChangeLog
+++ b/bfd/ChangeLog
@@ -1,3 +1,12 @@
+Wed Jan 31 16:16:53 1996  Ian Lance Taylor  <ian@cygnus.com>
+
+       * elflink.h (elf_bfd_final_link): Don't output initial dummy
+       symbol or section symbols if stripping all symbols and this is not
+       a relocateable link.  Don't output the symbol string table if
+       there are no symbols.
+       (elf_link_flush_output_syms): Don't do anything if there are no
+       symbols to flush.
+
 Wed Jan 31 12:55:49 1996  Richard Henderson  <rth@tamu.edu>
 
        * coff-aux.c: New file.

diff --git a/bfd/elflink.h b/bfd/elflink.h
index c656ac1..f1cf498 100644 (file)
--- a/bfd/elflink.h
+++ b/bfd/elflink.h
@@ -1888,14 +1888,17 @@ elf_bfd_final_link (abfd, info)
 
   /* Start writing out the symbol table.  The first symbol is always a
      dummy symbol.  */
-  elfsym.st_value = 0;
-  elfsym.st_size = 0;
-  elfsym.st_info = 0;
-  elfsym.st_other = 0;
-  elfsym.st_shndx = SHN_UNDEF;
-  if (! elf_link_output_sym (&finfo, (const char *) NULL,
-                            &elfsym, bfd_und_section_ptr))
-    goto error_return;
+  if (info->strip != strip_all || info->relocateable)
+    {
+      elfsym.st_value = 0;
+      elfsym.st_size = 0;
+      elfsym.st_info = 0;
+      elfsym.st_other = 0;
+      elfsym.st_shndx = SHN_UNDEF;
+      if (! elf_link_output_sym (&finfo, (const char *) NULL,
+                                &elfsym, bfd_und_section_ptr))
+       goto error_return;
+    }
 
 #if 0
   /* Some standard ELF linkers do this, but we don't because it causes
@@ -1918,19 +1921,22 @@ elf_bfd_final_link (abfd, info)
      symbols have no names.  We store the index of each one in the
      index field of the section, so that we can find it again when
      outputting relocs.  */
-  elfsym.st_value = 0;
-  elfsym.st_size = 0;
-  elfsym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION);
-  elfsym.st_other = 0;
-  for (i = 1; i < elf_elfheader (abfd)->e_shnum; i++)
+  if (info->strip != strip_all || info->relocateable)
     {
-      o = section_from_elf_index (abfd, i);
-      if (o != NULL)
-       o->target_index = abfd->symcount;
-      elfsym.st_shndx = i;
-      if (! elf_link_output_sym (&finfo, (const char *) NULL,
-                                &elfsym, o))
-       goto error_return;
+      elfsym.st_value = 0;
+      elfsym.st_size = 0;
+      elfsym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION);
+      elfsym.st_other = 0;
+      for (i = 1; i < elf_elfheader (abfd)->e_shnum; i++)
+       {
+         o = section_from_elf_index (abfd, i);
+         if (o != NULL)
+           o->target_index = abfd->symcount;
+         elfsym.st_shndx = i;
+         if (! elf_link_output_sym (&finfo, (const char *) NULL,
+                                    &elfsym, o))
+           goto error_return;
+       }
     }
 
   /* Allocate some memory to hold information read in from the input
@@ -2051,9 +2057,12 @@ elf_bfd_final_link (abfd, info)
   off = _bfd_elf_assign_file_position_for_section (symstrtab_hdr, off, true);
   elf_tdata (abfd)->next_file_pos = off;
 
-  if (bfd_seek (abfd, symstrtab_hdr->sh_offset, SEEK_SET) != 0
-      || ! _bfd_stringtab_emit (abfd, finfo.symstrtab))
-    return false;
+  if (abfd->symcount > 0)
+    {
+      if (bfd_seek (abfd, symstrtab_hdr->sh_offset, SEEK_SET) != 0
+         || ! _bfd_stringtab_emit (abfd, finfo.symstrtab))
+       return false;
+    }
 
   /* Adjust the relocs to have the correct symbol indices.  */
   for (o = abfd->sections; o != NULL; o = o->next)
@@ -2369,20 +2378,23 @@ static boolean
 elf_link_flush_output_syms (finfo)
      struct elf_final_link_info *finfo;
 {
-  Elf_Internal_Shdr *symtab;
+  if (finfo->symbuf_count > 0)
+    {
+      Elf_Internal_Shdr *symtab;
 
-  symtab = &elf_tdata (finfo->output_bfd)->symtab_hdr;
+      symtab = &elf_tdata (finfo->output_bfd)->symtab_hdr;
 
-  if (bfd_seek (finfo->output_bfd, symtab->sh_offset + symtab->sh_size,
-               SEEK_SET) != 0
-      || (bfd_write ((PTR) finfo->symbuf, finfo->symbuf_count,
-                    sizeof (Elf_External_Sym), finfo->output_bfd)
-         != finfo->symbuf_count * sizeof (Elf_External_Sym)))
-    return false;
+      if (bfd_seek (finfo->output_bfd, symtab->sh_offset + symtab->sh_size,
+                   SEEK_SET) != 0
+         || (bfd_write ((PTR) finfo->symbuf, finfo->symbuf_count,
+                        sizeof (Elf_External_Sym), finfo->output_bfd)
+             != finfo->symbuf_count * sizeof (Elf_External_Sym)))
+       return false;
 
-  symtab->sh_size += finfo->symbuf_count * sizeof (Elf_External_Sym);
+      symtab->sh_size += finfo->symbuf_count * sizeof (Elf_External_Sym);
 
-  finfo->symbuf_count = 0;
+      finfo->symbuf_count = 0;
+    }
 
   return true;
 }