archbuild: allow empty setarch to skip running setarch at all

1 files changed, 2 insertions, 1 deletions

diff --git a/archbuild.in b/archbuild.in
index 73796ba..80d149a 100644
--- a/archbuild.in
+++ b/archbuild.in
@@ -22,6 +22,7 @@ else
 fi
 if [[ -f "@pkgdatadir@/setarch-aliases.d/${arch}" ]]; then
 	read -r set_arch < "@pkgdatadir@/setarch-aliases.d/${arch}"
+	[ -z "${set_arch}" ] && unset set_arch
 else
 	set_arch="${arch}"
 fi
@@ -99,7 +100,7 @@ if ${clean_first} || [[ ! -d "${chroots}/${repo}-${arch}" ]]; then
 
 	rm -rf --one-file-system "${chroots}/${repo}-${arch}"
 	(umask 0022; mkdir -p "${chroots}/${repo}-${arch}")
-	setarch "${set_arch}" mkarchroot \
+	${set_arch:+setarch "${set_arch}"} mkarchroot \
 		-C "${pacman_config}" \
 		-M "${makepkg_config}" \
 		${cache_dir} \