2005-01-21  Jakub Jelinek  <jakub@redhat.com>

	* ldgram.y (AS_NEEDED): New token.

	(input_list): Handle AS_NEEDED ( input_list ).

	* ldlex.l (AS_NEEDED): Add.

	* ld.texinfo: Document AS_NEEDED ().

--- ld/ld.texinfo	19 Jan 2005 11:42:49 -0000	1.134

+++ ld/ld.texinfo	21 Jan 2005 12:04:25 -0000	1.135

@@ -1,7 +1,7 @@

 \input texinfo

 @setfilename ld.info

 @c Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,

-@c 2001, 2002, 2003, 2004 Free Software Foundation, Inc.

+@c 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.

 @syncodeindex ky cp

 @include configdoc.texi

 @c (configdoc.texi is generated by the Makefile)

@@ -2576,6 +2576,18 @@ files should all be archives, and they a

 new undefined references are created.  See the description of @samp{-(}

 in @ref{Options,,Command Line Options}.

+@item AS_NEEDED(@var{file}, @var{file}, @dots{})

+@itemx AS_NEEDED(@var{file} @var{file} @dots{})

+@kindex AS_NEEDED(@var{files})

+This construct can appear only inside of the @code{INPUT} or @code{GROUP}

+commands, among other filenames.  The files listed will be handled

+as if they appear directly in the @code{INPUT} or @code{GROUP} commands,

+with the exception of ELF shared libraries, that will be added only

+when they are actually needed.  This construct essentially enables

+@option{--as-needed} option for all the files listed inside of it

+and restores previous @option{--as-needed} resp. @option{--no-as-needed}

+setting afterwards.

+

 @item OUTPUT(@var{filename})

 @kindex OUTPUT(@var{filename})

 @cindex output file name in linker scripot

--- ld/ldgram.y	19 Nov 2004 09:31:53 -0000	1.38

+++ ld/ldgram.y	21 Jan 2005 12:04:25 -0000	1.39

@@ -144,7 +144,7 @@ static int error_index;

 %token STARTUP HLL SYSLIB FLOAT NOFLOAT NOCROSSREFS

 %token ORIGIN FILL

 %token LENGTH CREATE_OBJECT_SYMBOLS INPUT GROUP OUTPUT CONSTRUCTORS

-%token ALIGNMOD AT SUBALIGN PROVIDE

+%token ALIGNMOD AT SUBALIGN PROVIDE AS_NEEDED

 %type <token> assign_op atype attributes_opt sect_constraint

 %type <name>  filename

 %token CHIP LIST SECT ABSOLUTE  LOAD NEWLINE ENDWORD ORDER NAMEWORD ASSERT_K

@@ -372,6 +372,18 @@ input_list:

 	|	input_list LNAME

 		{ lang_add_input_file($2,lang_input_file_is_l_enum,

 				 (char *)NULL); }

+	|	AS_NEEDED '('

+		  { $<integer>$ = as_needed; as_needed = TRUE; }

+		     input_list ')'

+		  { as_needed = $<integer>3; }

+	|	input_list ',' AS_NEEDED '('

+		  { $<integer>$ = as_needed; as_needed = TRUE; }

+		     input_list ')'

+		  { as_needed = $<integer>5; }

+	|	input_list AS_NEEDED '('

+		  { $<integer>$ = as_needed; as_needed = TRUE; }

+		     input_list ')'

+		  { as_needed = $<integer>4; }

 	;

 sections:

--- ld/ldlex.l	19 Nov 2004 09:31:53 -0000	1.28

+++ ld/ldlex.l	21 Jan 2005 12:04:25 -0000	1.29

@@ -269,6 +269,7 @@ V_IDENTIFIER [*?.$_a-zA-Z\[\]\-\!\^\\]([

 <BOTH,SCRIPT>"OUTPUT"			{ RTOKEN(OUTPUT);}

 <BOTH,SCRIPT>"INPUT"			{ RTOKEN(INPUT);}

 <EXPRESSION,BOTH,SCRIPT>"GROUP"		{ RTOKEN(GROUP);}

+<EXPRESSION,BOTH,SCRIPT>"AS_NEEDED"	{ RTOKEN(AS_NEEDED);}

 <EXPRESSION,BOTH,SCRIPT>"DEFINED"	{ RTOKEN(DEFINED);}

 <BOTH,SCRIPT>"CREATE_OBJECT_SYMBOLS"	{ RTOKEN(CREATE_OBJECT_SYMBOLS);}

 <BOTH,SCRIPT>"CONSTRUCTORS"		{ RTOKEN( CONSTRUCTORS);}