diff --git a/build.zig b/build.zig
index a1e819fe..9c621c53 100644
--- a/build.zig
+++ b/build.zig
@@ -99,6 +99,7 @@ pub fn build(b: *std.build.Builder) !void {
     const test_dir = try fs.Dir.openIterableDir(fs.cwd(), test_path, .{ .no_follow = true });
     fs.Dir.makePath(fs.cwd(), out_bin_path) catch {};
     const out_bin_dir = try fs.Dir.openDir(fs.cwd(), out_bin_path, .{});
+    try test_dir.dir.copyFile("run.sh", out_bin_dir, "run.sh", .{});
     var allocator = heap.page_allocator;
     var walker = try test_dir.walk(allocator);
     while (try walker.next()) |entry| {
diff --git a/test/default/Makefile.am b/test/default/Makefile.am
index 12aa7eb4..d319160d 100644
--- a/test/default/Makefile.am
+++ b/test/default/Makefile.am
@@ -1,5 +1,6 @@
 
 EXTRA_DIST = \
+	run.sh \
 	cmptest.h \
 	wasi-test-wrapper.sh \
 	wintest.bat \
diff --git a/test/default/run.sh b/test/default/run.sh
new file mode 100755
index 00000000..9e792b50
--- /dev/null
+++ b/test/default/run.sh
@@ -0,0 +1,9 @@
+#! /bin/sh
+
+find . -type f -perm +100 -print | grep -v run.sh | sort | while read -r x; do
+  echo "[$x]"
+  if ! "$x"; then
+    echo "*** [$x] FAILED" >&2
+    exit 1
+  fi
+done