linux-kernel - [GIT PULL] scripts/recordmcount.pl: There is no -m32 gcc option on Super-H anymore

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Date:	Wed, 21 Jan 2015 12:05:58 -0500
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Michael Karcher <kernel@...rcher.dialup.fu-berlin.de>,
	John Paul Adrian Glaubitz <glaubitz@...sik.fu-berlin.de>,
	Matt Fleming <matt@...sole-pimps.org>, stable@...r.kernel.org
Subject: [GIT PULL] scripts/recordmcount.pl: There is no -m32 gcc option on
 Super-H anymore


Linus,

It's been reported that function tracing does not work on the sh architecture
because gcc 4.8 for superH does not support -m32, and the recordmcount.pl
script adds "-m32" when re-compiling the object files with the mcount
locations.

I was not able to reproduce this problem, as it seems that -m32 works fine
for my cross compiler gcc 4.6.3, but I have to assume that -m32 was
deprecated somewhere between 4.6 and 4.8. As it still seems to compile
fine without -m32, I have no reason not to add this patch, as having
-m32 seems to cause trouble for others.

Please pull the latest trace-sh-3.19 tree, which can be found at:


  git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace.git
trace-sh-3.19

Tag SHA1: 625455641691af5faff3cef679b840d5824eb96c
Head SHA1: 1caf6aaaa47471831d77c75f094d4e00ad1ec808


Michael Karcher (1):
      scripts/recordmcount.pl: There is no -m32 gcc option on Super-H anymore

----
 scripts/recordmcount.pl | 1 -
 1 file changed, 1 deletion(-)
---------------------------
commit 1caf6aaaa47471831d77c75f094d4e00ad1ec808
Author: Michael Karcher <kernel@...rcher.dialup.fu-berlin.de>
Date:   Sun Jan 18 00:36:15 2015 +0100

    scripts/recordmcount.pl: There is no -m32 gcc option on Super-H anymore
    
    Compiling SH with gcc-4.8 fails due to the -m32 option not being
    supported.
    
    From http://buildd.debian-ports.org/status/fetch.php?pkg=linux&arch=sh4&ver=3.16.7-ckt4-1&stamp=1421425783
    
          CC      init/main.o
        gcc-4.8: error: unrecognized command line option '-m32'
        ld: cannot find init/.tmp_mc_main.o: No such file or directory
        objcopy: 'init/.tmp_mx_main.o': No such file
        rm: cannot remove 'init/.tmp_mx_main.o': No such file or directory
        rm: cannot remove 'init/.tmp_mc_main.o': No such file or directory
    
    Link: http://lkml.kernel.org/r/1421537778-29001-1-git-send-email-kernel@mkarcher.dialup.fu-berlin.de
    Link: http://lkml.kernel.org/r/54BCBDD4.10102@physik.fu-berlin.de
    
    Cc: stable@...r.kernel.org
    Cc: Matt Fleming <matt@...sole-pimps.org>
    Reported-by: John Paul Adrian Glaubitz <glaubitz@...sik.fu-berlin.de>
    Signed-off-by: Michael Karcher <kernel@...rcher.dialup.fu-berlin.de>
    Signed-off-by: Steven Rostedt <rostedt@...dmis.org>

diff --git a/scripts/recordmcount.pl b/scripts/recordmcount.pl
index 56ea99a12ab7..537c38ca2e1c 100755
--- a/scripts/recordmcount.pl
+++ b/scripts/recordmcount.pl
@@ -255,7 +255,6 @@ if ($arch eq "x86_64") {
     # force flags for this arch
     $ld .= " -m shlelf_linux";
     $objcopy .= " -O elf32-sh-linux";
-    $cc .= " -m32";
 
 } elsif ($arch eq "powerpc") {
     $local_regex = "^[0-9a-fA-F]+\\s+t\\s+(\\.?\\S+)";
--
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