diff --git a/build.sh b/build.sh
index 856754f5d7..1861110162 100755
--- a/build.sh
+++ b/build.sh
@@ -15,6 +15,8 @@ osname=$(source $basedir/board/common/overlay/etc/version && echo $os_short_name
 osversion=$(source $basedir/board/common/overlay/etc/version && echo $os_version)
 gzip=$(which pigz || which gzip)
 
+test -f $basedir/.build-env && source $basedir/.build-env
+
 if [ "$board" == "all" ]; then
     boards=$(ls $basedir/configs/*_defconfig | grep -v initramfs | grep -oE '\w+_defconfig$' | cut -d '_' -f 1)
     for b in $boards; do