From 543f5ce6d2523ba950017cfcd2561280c838e574 Mon Sep 17 00:00:00 2001
From: Vadim Zeitlin <vadim@wxwidgets.org>
Date: Fri, 30 Dec 2022 18:19:55 +0100
Subject: [PATCH] Don't use sudo in pre-build script when running as root

Just run apt-get directly in this case.
---
 build/tools/before_install.sh | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/build/tools/before_install.sh b/build/tools/before_install.sh
index 65908a89bd..bc185efd45 100755
--- a/build/tools/before_install.sh
+++ b/build/tools/before_install.sh
@@ -9,10 +9,18 @@
 
 set -e
 
-SUDO=sudo
-
 case $(uname -s) in
     Linux)
+        # Use sudo if it's available or assume root otherwise.
+        if command -v sudo > /dev/null; then
+            SUDO=sudo
+        else
+            if [ `id -u` -ne 0 ]; then
+                echo "Please install sudo or run as root (and not user `id -u`)." >& 2
+                exit 1
+            fi
+        fi
+
         # Debian/Ubuntu
         if [ -f /etc/apt/sources.list ]; then
             # Show information about the repositories and priorities used.