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patches/linux/3.0.9/100-headers_install-fix-__packed-in-exported-kernel-head.patch
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Sun Jul 17 22:46:47 2011 +0200 (2011-07-17)
changeset 2892 aa934ec4b4ee
parent 2735 f09ed6dd71a3
permissions -rw-r--r--
cc/gcc: add the backend/frontend infra for final gcc

Currently, we issue the bare-metal compiler from the pass_1 & pass_2
core compilers, because the final gcc breaks while doing so.

This implies we have to build some libces during the start_files step,
instead of the standard libc step. This is the case for newlib.

By adding a backend/frontend infra to the final gcc, we can abstract
what backend to call: the standard backend for non-bare-metal gcc,
and the core backend for bare-metal.

This patch is just an no-op, it just adds the final backend and
frontend without changing the way bare-metal is built, to come in a
subsequent patch.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr> 
     1 commit f210735fe2f17a6225432ee3d1239bcf23a8659c

     2 Author: Markus Trippelsdorf <markus@trippelsdorf.de>

     3 Date:   Fri Jun 24 15:51:00 2011 +0200

     4 

     5     headers_install: fix __packed in exported kernel headers

     6     

     7     checkpatch.pl warns about using __attribute__((packed)) in kernel

     8     headers: "__packed is preferred over __attribute__((packed))". If one

     9     follows that advice it could cause problems in the exported header

    10     files, because the outside world doesn't know about this shortcut.

    11     

    12     For example busybox will fail to compile:

    13      CC      miscutils/ubi_attach_detach.o

    14      In file included from miscutils/ubi_attach_detach.c:27:0:

    15      /usr/include/mtd/ubi-user.h:330:3: error: conflicting types for ‘__packed’

    16      /usr/include/mtd/ubi-user.h:314:3: note: previous declaration of ‘__packed’ was here

    17     ...

    18     

    19     Fix the problem by substituting __packed with __attribute__((packed)) in

    20     the header_install.pl script.

    21     

    22     Cc: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>

    23     CC: Joe Perches <joe@perches.com>

    24     Signed-off-by: Markus Trippelsdorf <markus@trippelsdorf.de>

    25     Signed-off-by: Michal Marek <mmarek@suse.cz>

    26 

    27 diff --git a/scripts/headers_install.pl b/scripts/headers_install.pl

    28 index efb3be1..48462be 100644

    29 --- a/scripts/headers_install.pl

    30 +++ b/scripts/headers_install.pl

    31 @@ -35,6 +35,7 @@ foreach my $file (@files) {

    32  		$line =~ s/([\s(])__iomem\s/$1/g;

    33  		$line =~ s/\s__attribute_const__\s/ /g;

    34  		$line =~ s/\s__attribute_const__$//g;

    35 +		$line =~ s/\b__packed\b/__attribute__((packed))/g;

    36  		$line =~ s/^#include <linux\/compiler.h>//;

    37  		$line =~ s/(^|\s)(inline)\b/$1__$2__/g;

    38  		$line =~ s/(^|\s)(asm)\b(\s|[(]|$)/$1__$2__$3/g;
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