awk '{print $$2}')
extra-tests: \
+ test-guests \
test-prerequisites \
test-c-api \
test-tools-null \
test-resize \
test-sparsify
+test-guests:
+ $(MAKE) -C ../guests check
+
test-prerequisites:
@libtool --help >/dev/null 2>&1 || { \
echo "extra-tests: libtool is not installed"; \