From: Masami Hiramatsu <mhiramat@redhat.com>
To: Anders Kaseorg <andersk@MIT.EDU>
Cc: "Américo Wang" <xiyou.wangcong@gmail.com>,
"Tim Abbott" <tabbott@MIT.EDU>,
"Linus Torvalds" <torvalds@linux-foundation.org>,
"Linux kernel mailing list" <linux-kernel@vger.kernel.org>,
"Waseem Daher" <wdaher@MIT.EDU>,
"Denys Vlasenko" <vda.linux@googlemail.com>,
"Rusty Russell" <rusty@rustcorp.com.au>,
"Andi Kleen" <andi@firstfloor.org>,
"H. Peter Anvin" <hpa@zytor.com>,
"Stephen Rothwell" <sfr@canb.auug.org.au>,
"Jeff Arnold" <jbarnold@MIT.EDU>
Subject: Re: [PATCH v2 0/4] Add support for compiling with -ffunction-sections -fdata-sections
Date: Wed, 22 Apr 2009 07:38:28 -0400 [thread overview]
Message-ID: <49EF01B4.6000406@redhat.com> (raw)
In-Reply-To: <alpine.DEB.2.00.0904211311110.7725@vinegar-pot.mit.edu>
Anders Kaseorg wrote:
> On Tue, 21 Apr 2009, Américo Wang wrote:
>> Nice work! But, don't -ffunction-sections and -fdata-sections have
>> collisions with '-g' and 'gprof'? Just like what gcc(1) describes.
>
> That description seems to be long obsolete. gcc used to warn that
> -ffunction-sections may affect debugging, but that warning was disabled
> for ELF targets in 1999, presumably because ELF has always supported
> arbitrary section names even though some other object formats have issues.
> <http://gcc.gnu.org/ml/gcc-patches/2008-03/msg00975.html>
>
> I know that debugging under -ffunction-sections -g works fine on at least
> x86, which is the only platform on which we currently propose to provide
> this option, and based on that message it looks like other platforms are
> fine too.
Would you know actual version of gcc from which supports the combination of
-ffunction-sections and -g?
Thank you,
--
Masami Hiramatsu
Software Engineer
Hitachi Computer Products (America) Inc.
Software Solutions Division
e-mail: mhiramat@redhat.com
next prev parent reply other threads:[~2009-04-22 11:38 UTC|newest]
Thread overview: 99+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-05 23:14 [PATCH v2 0/4] Add support for compiling with -ffunction-sections -fdata-sections Tim Abbott
2009-04-05 23:14 ` [PATCH v2 1/4] Make section names compatible " Tim Abbott
2009-04-05 23:14 ` [PATCH v2 2/4] modpost: Check the section flags, not name, to catch missing "ax"/"aw" Tim Abbott
2009-04-05 23:14 ` [PATCH v2 3/4] modpost: Support objects with more than 64k sections Tim Abbott
2009-04-05 23:14 ` [PATCH v2 4/4] x86: Add an option to compile with -ffunction-sections -fdata-sections Tim Abbott
2009-04-08 0:34 ` [PATCH v2 0/4] Add support for compiling " Tim Abbott
2009-04-08 5:22 ` Rusty Russell
2009-04-20 20:26 ` Tim Abbott
2009-04-20 23:40 ` Linus Torvalds
2009-04-21 0:26 ` Tim Abbott
2009-04-21 0:35 ` Linus Torvalds
2009-04-21 1:25 ` H. Peter Anvin
2009-04-21 1:49 ` Denys Vlasenko
2009-04-21 3:18 ` Arjan van de Ven
2009-04-21 3:26 ` Anders Kaseorg
2009-04-21 10:26 ` Andi Kleen
2009-04-21 6:01 ` Tim Abbott
2009-04-21 10:24 ` Andi Kleen
2009-04-23 20:48 ` [PATCH v3 0/3] " Tim Abbott
2009-04-23 20:49 ` [PATCH v3 1/3] Make section names compatible " Tim Abbott
2009-04-23 20:49 ` [PATCH v3 2/3] modpost: Check the section flags, not name, to catch missing "ax"/"aw" Tim Abbott
2009-04-23 20:49 ` [PATCH v3 3/3] modpost: Support objects with more than 64k sections Tim Abbott
2009-04-24 0:16 ` [PATCH v3 1/3] Make section names compatible with -ffunction-sections -fdata-sections Paul Mundt
2009-04-24 17:23 ` Sam Ravnborg
2009-04-26 2:10 ` Tim Abbott
2009-04-26 2:10 ` [PATCH 01/15] Add new HEAD_TEXT_SECTION macro Tim Abbott
2009-04-26 2:10 ` [PATCH 02/15] xtensa: convert to use __HEAD and HEAD_TEXT macros Tim Abbott
2009-04-26 2:10 ` [PATCH 03/15] alpha: " Tim Abbott
2009-04-26 2:10 ` [PATCH 04/15] frv: convert frv " Tim Abbott
2009-04-26 2:11 ` [PATCH 05/15] arm: convert " Tim Abbott
2009-04-26 2:11 ` [PATCH 06/15] ia64: " Tim Abbott
2009-04-26 2:11 ` [PATCH 07/15] m32r: " Tim Abbott
2009-04-26 2:11 ` [PATCH 08/15] m68k: " Tim Abbott
2009-04-26 2:11 ` [PATCH 09/15] mn10300: " Tim Abbott
2009-04-26 2:11 ` [PATCH 10/15] powerpc: " Tim Abbott
2009-04-26 2:11 ` [PATCH 11/15] s390: " Tim Abbott
2009-04-26 2:11 ` [PATCH 12/15] sh: " Tim Abbott
2009-04-26 2:11 ` [PATCH 13/15] sparc: " Tim Abbott
2009-04-26 2:11 ` [PATCH 14/15] x86: " Tim Abbott
2009-04-26 2:11 ` [PATCH 15/15] modpost: convert modpost to use HEAD_TEXT_SECTION macro Tim Abbott
2009-04-26 11:30 ` Sam Ravnborg
2009-04-26 22:18 ` Anders Kaseorg
2009-04-26 11:28 ` [PATCH 14/15] x86: convert to use __HEAD and HEAD_TEXT macros Sam Ravnborg
2009-04-26 16:40 ` Linus Torvalds
2009-04-26 17:12 ` Linus Torvalds
2009-04-26 18:34 ` Sam Ravnborg
2009-04-26 18:56 ` Linus Torvalds
2009-04-26 19:23 ` Sam Ravnborg
2009-04-26 21:07 ` [PATCH] x86: beautify vmlinux_64.lds.S Sam Ravnborg
2009-04-27 4:54 ` [tip:x86/kbuild] " tip-bot for Sam Ravnborg
2009-04-27 4:59 ` [PATCH 14/15] x86: convert to use __HEAD and HEAD_TEXT macros Ingo Molnar
2009-04-27 6:42 ` Sam Ravnborg
2009-04-27 7:19 ` Ingo Molnar
2009-04-27 7:37 ` Sam Ravnborg
2009-04-26 20:50 ` Andi Kleen
2009-04-27 3:47 ` Ingo Molnar
2009-04-30 10:39 ` [tip:x86/kbuild] x86: boot/compressed/vmlinux.lds.S: fix build of bzImage with 64 bit compiler tip-bot for Sam Ravnborg
2009-04-30 14:52 ` H. Peter Anvin
2009-04-30 15:09 ` Sam Ravnborg
2009-04-30 16:29 ` H. Peter Anvin
2009-04-30 17:52 ` Sam Ravnborg
2009-04-30 19:02 ` H. Peter Anvin
2009-04-26 11:24 ` [PATCH 13/15] sparc: convert to use __HEAD and HEAD_TEXT macros Sam Ravnborg
2009-04-26 11:24 ` [PATCH 12/15] sh: " Sam Ravnborg
2009-04-26 11:23 ` [PATCH 11/15] s390: " Sam Ravnborg
2009-04-26 11:23 ` [PATCH 10/15] powerpc: " Sam Ravnborg
2009-04-26 11:22 ` [PATCH 09/15] mn10300: " Sam Ravnborg
2009-04-26 11:22 ` [PATCH 08/15] m68k: " Sam Ravnborg
2009-04-26 11:21 ` [PATCH 07/15] m32r: " Sam Ravnborg
2009-04-28 3:34 ` Hirokazu Takata
2009-04-26 11:21 ` [PATCH 06/15] ia64: " Sam Ravnborg
2009-04-26 11:19 ` [PATCH 05/15] arm: " Sam Ravnborg
2009-04-27 16:46 ` Tim Abbott
2009-04-27 17:00 ` Russell King
2009-04-27 17:06 ` Linus Torvalds
2009-04-27 17:29 ` Luck, Tony
2009-04-28 8:56 ` Ralf Baechle
2009-04-26 11:16 ` [PATCH 04/15] frv: convert frv " Sam Ravnborg
2009-04-26 11:15 ` [PATCH 03/15] alpha: convert " Sam Ravnborg
2009-04-26 11:13 ` [PATCH 02/15] xtensa: " Sam Ravnborg
2009-04-26 16:29 ` [PATCH 01/15] Add new HEAD_TEXT_SECTION macro Linus Torvalds
2009-04-26 2:42 ` [PATCH v3 1/3] Make section names compatible with -ffunction-sections -fdata-sections Paul Mundt
2009-04-26 9:15 ` Sam Ravnborg
2009-04-26 9:20 ` [PATCH] kbuild: fix comment in modpost.c Sam Ravnborg
2009-04-26 17:28 ` Tim Abbott
2009-04-26 9:09 ` [PATCH v3 1/3] Make section names compatible with -ffunction-sections -fdata-sections Sam Ravnborg
2009-04-26 21:53 ` Tim Abbott
2009-04-26 13:09 ` Rusty Russell
2009-04-24 0:14 ` [PATCH v3 0/3] Add support for compiling " Paul Mundt
2009-04-24 14:19 ` Masami Hiramatsu
2009-04-24 15:32 ` Tim Abbott
2009-04-25 1:49 ` Masami Hiramatsu
2009-04-21 1:05 ` [PATCH v2 0/4] " Denys Vlasenko
2009-04-21 5:50 ` Rusty Russell
2009-04-22 12:47 ` Paul Mundt
2009-04-21 14:02 ` Américo Wang
2009-04-21 17:40 ` Anders Kaseorg
2009-04-22 11:38 ` Masami Hiramatsu [this message]
2009-04-22 17:13 ` Tim Abbott
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