From 30a51c1ff7991d5c3c607d424046a58fd7cf4359 Mon Sep 17 00:00:00 2001
From: Guohan Lu <lguohan@gmail.com>
Date: Fri, 1 Jan 2021 01:00:47 -0800
Subject: [PATCH] [build]: fix dpkg uninstall bug

fix a bug when there are multiple debian packages to be uninstalled

Signed-off-by: Guohan Lu <lguohan@gmail.com>
---
 rules/functions | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/rules/functions b/rules/functions
index d5aba46fd..104efa305 100644
--- a/rules/functions
+++ b/rules/functions
@@ -145,11 +145,11 @@ expand = $(foreach d,$(1),$(call expand,$($(d)_$(2)),$(2))) $(1)
 ## Uninstall debs
 ###############################################################################
 define UNINSTALL_DEBS
-$(info $(1))
-$(foreach deb,$(1), \
-	{ while true; do \
-		if mkdir $(DEBS_PATH)/dpkg_lock &> /dev/null; then \
-			{ sudo DEBIAN_FRONTEND=noninteractive dpkg -P $(firstword $(subst _, ,$(basename $(deb)))) $(LOG) && rm -d $(DEBS_PATH)/dpkg_lock && break; } || { rm -d $(DEBS_PATH)/dpkg_lock && exit 1 ; } \
-	    fi; \
-	done; } )
+if [ -n "$(1)" ]; then \
+    while true; do \
+        if mkdir $(DEBS_PATH)/dpkg_lock &> /dev/null; then \
+		    { sudo DEBIAN_FRONTEND=noninteractive dpkg -P $(foreach deb,$(1),$(firstword $(subst _, ,$(basename $(deb))))) $(LOG) && rm -d $(DEBS_PATH)/dpkg_lock && break; } || { rm -d $(DEBS_PATH)/dpkg_lock && exit 1 ; } \
+        fi; \
+    done; \
+fi
 endef