From: Alice Frosi <>

In alpine docker image the qemu-system-s390x build is broken and
it throws this error:
qemu-system-s390x: Initialization of device s390-ipl failed: could not
load bootloader 's390-ccw.img'

The grep command of busybox uses regex. This fails on binary data
(e.g. stops on every \0), so it does not identify the string
BiGeNdIaN in the test case big/little. Therefore, it assumes
that the architecture is little endian.

This fix solves the grep problem by printing the content of
TMPO with strings

Signed-off-by: Alice Frosi <>
Signed-off-by: Christian Borntraeger <>
[some changes to patch description, add -a option to strings]
Message-Id: <>
Reviewed-by: Eric Blake <>
Signed-off-by: Cornelia Huck <>
 configure | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/configure b/configure
index 831ebf248f..1be413a004 100755
--- a/configure
+++ b/configure
@@ -1933,9 +1933,9 @@ int main(int argc, char *argv[]) {
 if compile_object ; then
-    if grep -q BiGeNdIaN $TMPO ; then
+    if strings -a $TMPO | grep -q BiGeNdIaN ; then
-    elif grep -q LiTtLeEnDiAn $TMPO ; then
+    elif strings -a $TMPO | grep -q LiTtLeEnDiAn ; then
         echo big/little test failed

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