From 53ed17c75265ab1c2ac6638a6dd57d8e93d788f2 Mon Sep 17 00:00:00 2001
From: Pierre Labastie <pierre.labastie@neuf.fr>
Date: Thu, 4 Jan 2024 19:22:44 +0100
Subject: [PATCH] export the udev_helpers variable

Since it is needed for both building and installing, exporting it
allows to have it defined even if building as a regular user (so that
sudo is run for installing) or using a package manager (which usually
runs in a new shell and forgets unexported variables)
---
 chapter08/udev.xml | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/chapter08/udev.xml b/chapter08/udev.xml
index 967b3dd84..b4ecbe656 100644
--- a/chapter08/udev.xml
+++ b/chapter08/udev.xml
@@ -126,9 +126,10 @@ meson setup \
     </variablelist>
 
     <para>Get the list of the shipped udev helpers and save it into an
-    environment variable:</para>
+    environment variable (exporting it is not strictly necessary, but it makes
+    building as a regular user or using a package manager easier):</para>
 
-    <screen><userinput remap="make">udev_helpers=$(grep "'name' :" ../src/udev/meson.build | \
+    <screen><userinput remap="make">export udev_helpers=$(grep "'name' :" ../src/udev/meson.build | \
                awk '{print $3}' | tr -d ",'" | grep -v 'udevadm')</userinput></screen>
 
     <para>Only build the components needed for udev:</para>