From c10df2fe85e06efb509a889bd7aae8ab5dc3a512 Mon Sep 17 00:00:00 2001
From: "Joshua M. Boniface" <joshua@boniface.me>
Date: Thu, 9 Apr 2020 11:33:22 -0400
Subject: [PATCH] Improve dpkg handling in build.sh

---
 build.sh | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/build.sh b/build.sh
index 86c8447933..b4792a25ed 100755
--- a/build.sh
+++ b/build.sh
@@ -34,7 +34,7 @@ list_platforms() {
 }
 
 do_build_native() {
-    if [[ $( dpkg --print-architecture | head -1 ) != "${PLATFORM##*.}" ]]; then
+    if [[ -f $( which dpkg ) && $( dpkg --print-architecture | head -1 ) != "${PLATFORM##*.}" ]]; then
         echo "Cross-building is not supported for native builds, use 'docker' builds on amd64 for cross-building."
         exit 1
     fi
@@ -43,7 +43,7 @@ do_build_native() {
 }
 
 do_build_docker() {
-    if ! dpkg --print-architecture | grep -q 'amd64'; then
+    if [[ -f $( which dpkg ) && $( dpkg --print-architecture | head -1 ) != "amd64" ]]; then
         echo "Docker-based builds only support amd64-based cross-building; use a 'native' build instead."
         exit 1
     fi