[OE-core] [PATCH] autotools.bbclass: Enhance sed regexp to avoid extra subshell

[Matthieu Crapet]

head -n1 can be done using sed.

Signed-off-by: Matthieu Crapet <Matthieu.Crapet at ingenico.com>
---
 meta/classes/autotools.bbclass | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/meta/classes/autotools.bbclass b/meta/classes/autotools.bbclass
index 19edc54..afca760 100644
--- a/meta/classes/autotools.bbclass
+++ b/meta/classes/autotools.bbclass
@@ -195,7 +195,7 @@ autotools_do_configure() {
 		else
 			acpaths="${acpaths}"
 		fi
-		AUTOV=`automake --version |head -n 1 |sed "s/.* //;s/\.[0-9]\+$//"`
+		AUTOV=`automake --version | sed -e '1{s/.* //;s/\.[0-9]\+$//};q'`
 		automake --version
 		echo "AUTOV is $AUTOV"
 		if [ -d ${STAGING_DATADIR_NATIVE}/aclocal-$AUTOV ]; then
-- 
2.0.0