2009-05-19 Doug Kwan <dougkwan@google.com>

	* archive.cc (Archive::Archive): Move constructor from archive.h
	to here.  Initialize no_export_.
	(Archive::get_elf_object_for_member): Set no_export flag of object.
	* archive.h (Archive::Archive): Move constructor body to
	archive.cc.
	(Archive::no_export): New method.
	(Archive::no_export_): New field.
	* object.h (Object::Object): Initialize no_export_ to false.
	(Object::no_export, Object::set_no_export): New methods.
	(Object::no_export_): New field.
	* options.cc (General_options::parse_exclude_libs): New method.
	(General_options::check_excluded_libs) Same.
	* options.h (exclude_libs): New option.
	(General_options::check_excluded_libs): New method declaration.
	(General_options::excluded_libs_): New field.
	* symtab.cc (Symbol_table::add_from_relobj): Hide symbols with
	default or protected visibility if an object has no-export flag set.
	testsuite/Makefile.am (check_PROGRAMS): Add exclude_libs_test.
	(check_SCRIPTS): Add exclude_libs_test.sh.
	(check_DATA): Add exclude_libs_test.syms.
	(MOSTLYCLEANFILES): Add exclude_libs_test.syms,
	libexclude_libs_test_1.a and libexclude_libs_test_2.a.
	(exclude_libs_test_SOURCES, exclude_libs_test_DEPENDENCIES,
	exclude_libs_test_LDFLAGS and exclude_libs_test_LDADD): Define.
	(exclude_libs_test.syms, libexclude_libs_test_1.a,
	libexclude_libs_test_2.a): New rules.
	* testsuite/Makefile.in: Regenerate.
	* testsuite/exclude_libs_test.c: New file.
	* testsuite/exclude_libs_test.sh: Ditto.
	* testsuite/exclude_libs_test_1.c: Ditto.
	* testsuite/exclude_libs_test_2.c: Ditto.

1 files changed, 20 insertions, 0 deletions

diff --git a/gold/symtab.cc b/gold/symtab.cc
index 30e7d10..3d179ef 100644
--- a/gold/symtab.cc
+++ b/gold/symtab.cc
@@ -1126,6 +1126,26 @@ Symbol_table::add_from_relobj(
 	  psym = &sym2;
 	}
 
+      // Fix up visibility if object has no-export set.
+      if (relobj->no_export())
+        {
+	  // We may have copied symbol already above.
+	  if (psym != &sym2)
+	    {
+	      memcpy(symbuf, p, sym_size);
+	      psym = &sym2;
+	    }
+
+	  elfcpp::STV visibility = sym2.get_st_visibility();
+	  if (visibility == elfcpp::STV_DEFAULT
+	      || visibility == elfcpp::STV_PROTECTED)
+	    {
+	      elfcpp::Sym_write<size, big_endian> sw(symbuf);
+	      unsigned char nonvis = sym2.get_st_nonvis();
+	      sw.put_st_other(elfcpp::STV_HIDDEN, nonvis);
+	    }
+        }
+
       Stringpool::Key name_key;
       name = this->namepool_.add_with_length(name, namelen, true,
 					     &name_key);