linux-kernel - Re: [PATCH] Makefile: fix error when gen TAGS

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Date:	Mon, 12 Mar 2012 00:52:16 -0700
From:	Stephen Boyd <sboyd@...eaurora.org>
To:	Yang Bai <hamo.by@...il.com>
CC:	mmarek@...e.cz, rostedt@...dmis.org, adobriyan@...il.com,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Makefile: fix error when gen TAGS

On 3/12/2012 12:50 AM, Yang Bai wrote:
> On Mon, Mar 12, 2012 at 3:34 PM, Stephen Boyd<sboyd@...eaurora.org>  wrote:
>> Ah ok. How about this patch instead? Then we don't duplicate the sed
>> statement.
>>
>> ---->8-------
>>
>> diff --git a/scripts/tags.sh b/scripts/tags.sh
>> index 833813a..b390096 100755
>> --- a/scripts/tags.sh
>> +++ b/scripts/tags.sh
>> @@ -168,7 +168,7 @@ exuberant()
>>
>>         --regex-dotconfig='/^#?[[:blank:]]*(CONFIG_[[:alnum:]_]+)/\1/'
>>
>>         # Remove structure forward declarations.
>> -       LANG=C sed -i -e '/^\([a-zA-Z_][a-zA-Z0-9_]*\)\t.*\t\/\^struct
>> \1;.*\$\/;"\tx$/d' tags
>> +       LANG=C sed -i -e '/^\([a-zA-Z_][a-zA-Z0-9_]*\)\t.*\t\/\^struct
>> \1;.*\$\/;"\tx$/d' $2
>>   }
>>
>>   emacs()
>> @@ -213,9 +213,9 @@ emacs()
>>   xtags()
>>   {
>>         if $1 --version 2>&1 | grep -iq exuberant; then
>> -               exuberant $1
>> +               exuberant $1 $2
>>         elif $1 --version 2>&1 | grep -iq emacs; then
>> -               emacs $1
>> +               emacs $1 $2
>>         else
>>                 all_sources | xargs $1 -a
>>          fi
>> @@ -244,11 +244,11 @@ case "$1" in
>>
>>         "tags")
>>                 rm -f tags
>> -               xtags ctags
>> +               xtags ctags $1
>>                 ;;
>>
>>         "TAGS")
>>                 rm -f TAGS
>> -               xtags etags
>> +               xtags etags $1
>>                 ;;
>>   esac
>>
>>
>> But then with your next patch maybe it would be better to just have a flag?
>>
>> ----8<-----
>>
>> diff --git a/scripts/tags.sh b/scripts/tags.sh
>> index 833813a..4b1755d 100755
>> --- a/scripts/tags.sh
>> +++ b/scripts/tags.sh
>> @@ -166,9 +166,6 @@ exuberant()
>>         all_defconfigs | xargs -r $1 -a                         \
>>         --langdef=dotconfig --language-force=dotconfig          \
>>
>>         --regex-dotconfig='/^#?[[:blank:]]*(CONFIG_[[:alnum:]_]+)/\1/'
>> -
>> -       # Remove structure forward declarations.
>>
>> -       LANG=C sed -i -e '/^\([a-zA-Z_][a-zA-Z0-9_]*\)\t.*\t\/\^struct
>> \1;.*\$\/;"\tx$/d' tags
>>   }
>>
>>   emacs()
>> @@ -233,6 +230,7 @@ if [ "${ARCH}" = "um" ]; then
>>         fi
>>   fi
>>
>> +remove_structs=
>>   case "$1" in
>>         "cscope")
>>                 docscope
>> @@ -244,11 +242,18 @@ case "$1" in
>>
>>         "tags")
>>                 rm -f tags
>> -               xtags ctags
>> +               xtags ctags $1
> Why we need a $1 here??
>> +               remove_structs=y
>>                 ;;
>>
>>         "TAGS")
>>                 rm -f TAGS
>> -               xtags etags
>> +               xtags etags $1
> The same.
>> +               remove_structs=y
>>                 ;;
>>   esac
>> +
>> +# Remove structure forward declarations.
>> +if [ -n $remove_structs ]; then
>> +       LANG=C sed -i -e '/^\([a-zA-Z_][a-zA-Z0-9_]*\)\t.*\t\/\^struct
>> \1;.*\$\/;"\tx$/d' $1
>> +fi
>>
> This way is better but I don't understand why a $1 is there.
> I think it is useless and if you agree with me, i will send a fine patch to you.

It's a holdover from the previous patch. Thanks for spotting/removing it.

-- 
Sent by an employee of the Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum.

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