[iptables PATCH] tests: shell: Fix for 'make distcheck'

[Phil Sutter <phil@nwl.cc>]

The target performs a "VPATH build", so built binaries are not put into
the same directory tree as the test script itself. For lack of a better
way to detect this, assume $PWD in this situation remains being the
build tree's TLD and check if binaries are present in there.

Signed-off-by: Phil Sutter <phil@nwl.cc>
---
 iptables/tests/shell/run-tests.sh | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/iptables/tests/shell/run-tests.sh b/iptables/tests/shell/run-tests.sh
index 1125690583b46..2ad259c21644c 100755
--- a/iptables/tests/shell/run-tests.sh
+++ b/iptables/tests/shell/run-tests.sh
@@ -87,6 +87,17 @@ if [ "$HOST" != "y" ]; then
 	XTABLES_LEGACY_MULTI="$(dirname $0)/../../xtables-legacy-multi"
 
 	export XTABLES_LIBDIR=${TESTDIR}/../../../extensions
+
+	# maybe this is 'make distcheck' calling us from a build tree
+	if [ ! -e "$XTABLES_NFT_MULTI" -a \
+	     ! -e "$XTABLES_LEGACY_MULTI" -a \
+	     -e "./iptables/xtables-nft-multi" -a \
+	     -e "./iptables/xtables-legacy-multi" ]; then
+		msg_warn "Running in separate build-tree, using binaries from $PWD/iptables"
+		XTABLES_NFT_MULTI="$PWD/iptables/xtables-nft-multi"
+		XTABLES_LEGACY_MULTI="$PWD/iptables/xtables-legacy-multi"
+		export XTABLES_LIBDIR="$PWD/extensions"
+	fi
 else
 	XTABLES_NFT_MULTI="xtables-nft-multi"
 	XTABLES_LEGACY_MULTI="xtables-legacy-multi"
-- 
2.47.0