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-rw-r--r--acinclude.m42
1 files changed, 1 insertions, 1 deletions
diff --git a/acinclude.m4 b/acinclude.m4
index 21496ee5d8..896710b409 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -211,7 +211,7 @@ if test "$no_recursion" != yes; then
esac
ac_popdir=`pwd`
- for ac_dir in $$1_configdirs; do
+ for ac_dir in : $$1_configdirs; do test "x$ac_dir" = x: && continue
# Do not complain, so a configure script can configure whichever
# parts of a large source tree are present.