[OE-core] Could we build tar-replacement firstly and not parallel if tar-replacement is needed to build

[Rongqing Li]

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 at 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
+
+    bitbake pseudo-native $additionalopts -c populate_sysroot
      ret=$?
      if [ "$ret" != "0" ]; then
          exit 1
-- 
1.7.4.1


On 2012年08月06日 20:50, Rongqing Li wrote:
> Hi:
>
> Building failed several times when building tar-replacement-native is
> needed,
> The error log shows
> "bitbake_build/tmp/sysroots/x86_64-linux/usr/bin/tar: Text
> file busy". this log proves "an attempt was made to execute a
> pure-procedure
> program that is currently open for writing."
>
>
> Before this error, tar-replacement do_populate_sysroot just starts,
> (tar-replacement-native-1.26-r2: task do_populate_sysroot: Started)
> After this error, we see tar-replacement do_populate_sysroot just
> finish.
>
> So I think the root cause is that do_populate_sysroot sqlite is using
> a tar command which being opened to written. in fact, all packages
> need tar to do_popolate_sysroot()
>
> I see building tar-replacement-native is started in bitbake file,
> could we build tar-replacement firstly, not parallel if needed.
>
>
>
> diff --git a/scripts/bitbake b/scripts/bitbake
> index 3772d82..1bb8fed 100755
> --- a/scripts/bitbake
> +++ b/scripts/bitbake
> @@ -134,7 +134,10 @@ if [ $buildpseudo -gt 0 ]; then
>               fi
>           done
>       done
> -    bitbake pseudo-native $TARTARGET $additionalopts -c populate_sysroot
> +
> +    if [ $needptar = "1" ]; then
> +       sed -i 's/BB_NUMBER_THREADS =/#BB_NUMBER_THREADS =/g'
> conf/local.conf
> +       bitbake $TARTARGET
> +       sed -i 's/#BB_NUMBER_THREADS =/BB_NUMBER_THREADS =/g'
> conf/local.conf
> +    fi
> +
> +    bitbake pseudo-native $additionalopts -c populate_sysroot
>       ret=$?
>       if [ "$ret" != "0" ]; then
>           exit 1
>
>
> since building tar-replacement or not depends on host tar version, it is
> hard to add a tar dependence to any package, and I did not have a good way
> to fix this bug except the upper.
>
> Any advice and suggestion are welcome
>
>

-- 
Best Reagrds,
Roy | RongQing Li