File sfos_arch_detection.patch of Package rpmrebuild

Common subdirectories: a/locale and b/locale
Common subdirectories: a/man and b/man
Common subdirectories: a/plugins and b/plugins
diff -u a/rpmrebuild.sh b/rpmrebuild.sh
--- a/rpmrebuild.sh	2021-01-17 15:03:59.000000000 +0100
+++ b/rpmrebuild.sh	2022-09-01 12:35:36.636984806 +0200
@@ -163,7 +163,12 @@
 {
 	Debug '(CheckArch)'
 	# current architecture
-	local cur_arch=$( uname -m)
+	local cur_arch
+	if [ -e /etc/ssu/ssu.ini ]; then # Sailfish OS arm 32bit userland on 64bit kernel
+		cur_arch=$( awk 'BEGIN {FS="="} /^arch/ {print $2}' /etc/ssu/ssu.ini )
+	else
+		cur_arch=$( uname -m)
+	fi
 
 	# pac_arch is got from RpmArch
 	RpmArch
@@ -174,8 +179,19 @@
 		change_arch="";;
 	'(none)')
 		change_arch="";;
+	# work around setarch not knowing about armv7hl
 	*)
-		change_arch="setarch $pac_arch";;
+		change_arch="setarch $pac_arch"
+		if ! setarch "$pac_arch" -R true 2>/dev/null; then
+				Debug "  architecture '$pac_arch' not supported by setarch"
+				if [ "$pac_arch" = "aarch64" ]; then
+						change_arch=linux64
+				else
+						change_arch=linux32
+				fi
+				Debug "using '$change_arch' instead."
+		fi
+		;;
 	esac
 	Debug "  change_arch=$change_arch"
 	return