From 5350d3063b2abf9519c30e5d620ac3617c0dbbfc Mon Sep 17 00:00:00 2001
From: Roger Lipscombe <roger@differentpla.net>
Date: Wed, 19 Oct 2022 09:43:14 +0100
Subject: [PATCH] fix: some compatibility issues with non GNU environments

Change the test for empty directory to match one that erlang.mk uses
itself, for consistency.

refs #17
---
 plugins.mk | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/plugins.mk b/plugins.mk
index 9abedc4..a27655d 100644
--- a/plugins.mk
+++ b/plugins.mk
@@ -52,7 +52,7 @@ endif
 	$(verbose) rm -rf $(ELVIS_BUILD_DIR)/elvis-$(ELVIS_VERSION)
 	$(verbose) rm $(ELVIS_BUILD_DIR)/$(ELVIS_CODE_ARCHIVE)
 	$(verbose) rm -f $(ELVIS_BUILD_DIR)/rebar3
-	$(verbose) [ -z "$(ls -A $(ELVIS_BUILD_DIR))" ] || rmdir $(ELVIS_BUILD_DIR)
+	$(if $(shell ls -A $(ELVIS_BUILD_DIR)/),,$(verbose) rmdir $(ELVIS_BUILD_DIR))
 
 elvis: $(ELVIS)
 	$(verbose) $(ELVIS) rock -c $(ELVIS_CONFIG) $(ELVIS_OPTS)