Re: Could we build tar-replacement firstly and not parallel if tar-replacement is needed to build

[Rongqing Li <rongqing.li@windriver.com>]

On 2012年08月07日 15:41, Richard Purdie wrote:
> On Tue, 2012-08-07 at 13:59 +0800, Rongqing Li wrote:
>> Paste a RFC PATCH
>>
>> [RFC PATCH 1/1] bitbake: compile tar-replacement firstly, and not parallel
>>
>> Compiling tar-replacement or not is decided by version of host tar,
>> if the host tar version is lower than 1.23, Compiling tar-replacement
>> is needed.
>>
>> When doing popoluate tar-replacement sysroot to write the tar to
>> sysroot, but writing is not finished. other packages probably
>> use the being written tar to unzip file, which will lead to failure
>> and report the below error:
>> "bitbake_build/tmp/sysroots/x86_64-linux/usr/bin/tar: Text file busy"
>>
>> Now we compile tar-replacement firstly and not parallel to ensure
>> that a being written tar command will not be used.
>>
>> Signed-off-by: Roy.Li <rongqing.li@windriver.com>
>> ---
>>    scripts/bitbake |   14 +++++++++++++-
>>    1 files changed, 13 insertions(+), 1 deletions(-)
>>
>> diff --git a/scripts/bitbake b/scripts/bitbake
>> index 3772d82..eb6b144 100755
>> --- a/scripts/bitbake
>> +++ b/scripts/bitbake
>> @@ -134,7 +134,19 @@ if [ $buildpseudo -gt 0 ]; then
>>                fi
>>            done
>>        done
>> -    bitbake pseudo-native $TARTARGET $additionalopts -c populate_sysroot
>> +
>> +    if [ $needtar = "1" ]; then
>> +       NUM_THREAD_LINE=`grep -n "^\s*BB_NUMBER_THREADS" conf/local.conf
>> |awk -F':' '{print $1}'`
>> +	test -n "$NUM_THREAD_LINE" &&
>> +	sed -i ''"$NUM_THREAD_LINE"'s/^\s*BB_NUMBER_THREADS/#\0/g' conf/local.conf
>> +
>> +	bitbake $TARTARGET -c populate_sysroot
>> +
>> +	test -n "$NUM_THREAD_LINE" &&
>> +	sed -i
>> ''"$NUM_THREAD_LINE"'s/^#\s*BB_NUMBER_THREADS/BB_NUMBER_THREADS/g'
>> conf/local.conf
>> +    fi
>
> We are *NOT* running sed over local.conf. What is the user used a
> different configuration file for example?

I use the sed to disable NUM_THREAD_LINE in conf/local.conf if
NUM_THREAD_LINE has been enabled.

After compile $TARTARGET, use the sed to enable NUM_THREAD_LINE
in conf/local.conf



> If you're just building tar-native, is there a parallel race possible?
> I'm not sure that there is?

Even if I just build tar-native, I still have several packages which
are needed to building.


$bitbake tar-replacement-native -g

$ cat pn-buildlist
autoconf-native
libtool-native
m4-native
gettext-minimal-native
tar-replacement-native
quilt-native
gnu-config-native
automake-native


Thanks for your reply.
-Roy
>
> For the record I hate this script and what it has become, its horrible.
> It started as a workaround for pseudo-native, its becoming a dumping
> ground for a whole set of nasty workarounds :(.
>
> Cheers,
>
> Richard
>
>
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>

-- 
Best Reagrds,
Roy | RongQing Li