[Fwd: PATCH: Response file support]

[Ranjit Mathew <rmathew at gmail dot com>]

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FYI.

The GCC driver on mainline (to-be-4.2), now accepts
"@foo"-style arguments on the command line, primarily
to accommodate command line length restrictions on
some systems. This supersedes the @file support in
GCJ and accepts basically anything that can be
specified on the command line (and not just input
files).

I think this makes the @file support code in GCJ
dead-code.

Thanks,
Ranjit.

- -------- Original Message --------
Subject: PATCH: Response file support
Date: Wed, 23 Nov 2005 10:13:42 -0800
From: Mark Mitchell <mark@codesourcery.com>
Reply-To: mark@codesourcery.com
Newsgroups: gmane.comp.gcc.patches


This patch uses the new libiberty expandargv API in the compiler
driver.

So, now:

  gcc @foo -o bar

reads additional command-line options from "foo".  This functionality
has been in binutils for a while now.  Windows users need this
behavior because of command-line length limits, and users on other
systems may find it useful as well.  As previously agreed, if there is
no file named "foo" then the "@foo" option is still interpreted
literally.

Tested on x86_64-unknown-linux-gnu, in the usual way, by playing with
various response files, and by looking at the generated manual pages
and info documentation.

Applied to mainline.

- --
Mark Mitchell
CodeSourcery, LLC
mark@codesourcery.com

2005-11-23  Mark Mitchell  <mark@codesourcery.com>

	* doc/invoke.texi: For man pages, include gcc-vers.texi.
	List @file in the option summary.  Include the libiberty
	documentation for @file.
	* gcc.c (main): Call expandargv.
	* Makefile.in (gcc-vers.texi): Define srcdir.

Index: doc/invoke.texi
===================================================================
- --- doc/invoke.texi	(revision 107400)
+++ doc/invoke.texi	(working copy)
@@ -4,6 +4,10 @@
 @c For copying conditions, see the file gcc.texi.

 @ignore
+@c man begin INCLUDE
+@include gcc-vers.texi
+@c man end
+
 @c man begin COPYRIGHT
 Copyright @copyright{} 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997,
 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
@@ -36,7 +40,7 @@ gcc [@option{-c}|@option{-S}|@option{-E}
     [@option{-I}@var{dir}@dots{}] [@option{-L}@var{dir}@dots{}]
     [@option{-D}@var{macro}[=@var{defn}]@dots{}] [@option{-U}@var{macro}]
     [@option{-f}@var{option}@dots{}] [@option{-m}@var{machine-option}@dots{}]
- -    [@option{-o} @var{outfile}] @var{infile}@dots{}
+    [@option{-o} @var{outfile}] [@@@var{file}] @var{infile}@dots{}

 Only the most useful options are listed here; see below for the
 remainder.  @samp{g++} accepts mostly the same options as @samp{gcc}.
@@ -156,7 +160,7 @@ in the following sections.
 @item Overall Options
 @xref{Overall Options,,Options Controlling the Kind of Output}.
 @gccoptlist{-c  -S  -E  -o @var{file}  -combine -pipe  -pass-exit-codes  @gol
- --x @var{language}  -v  -###  --help  --target-help  --version}
+-x @var{language}  -v  -###  --help  --target-help  --version @@@var{file}}

 @item C Language Options
 @xref{C Dialect Options,,Options Controlling C Dialect}.
@@ -1049,6 +1053,8 @@ line options for each tool.
 @item --version
 @opindex version
 Display the version number and copyrights of the invoked GCC@.
+
+@include @value{srcdir}/../libiberty/at-file.texi
 @end table

 @node Invoking G++
Index: gcc.c
===================================================================
- --- gcc.c	(revision 107400)
+++ gcc.c	(working copy)
@@ -6032,6 +6032,8 @@ main (int argc, const char **argv)

   xmalloc_set_program_name (programname);

+  expandargv (&argc, &argv);
+
 #ifdef GCC_DRIVER_HOST_INITIALIZATION
   /* Perform host dependent initialization when needed.  */
   GCC_DRIVER_HOST_INITIALIZATION;
Index: Makefile.in
===================================================================
- --- Makefile.in	(revision 107400)
+++ Makefile.in	(working copy)
@@ -3320,6 +3320,7 @@ gcc-vers.texi: $(BASEVER) $(DEVPHASE)
 	 then echo "@set DEVELOPMENT"; \
 	 else echo "@clear DEVELOPMENT"; \
 	 fi) > $@T
+	echo "@set srcdir $(srcdir)" >> $@T
 	mv -f $@T $@




- --
Ranjit Mathew      Email: rmathew AT gmail DOT com

Bangalore, INDIA.    Web: http://ranjitmathew.hostingzero.com/


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