diff --git a/srcpkgs/gdm/template b/srcpkgs/gdm/template
index 20977203039..bb5b48692d4 100644
--- a/srcpkgs/gdm/template
+++ b/srcpkgs/gdm/template
@@ -22,7 +22,6 @@ license="GPL-2.0-or-later"
 homepage="https://wiki.gnome.org/Projects/GDM"
 distfiles="${GNOME_SITE}/${pkgname}/${version%.*}/${pkgname}-${version}.tar.xz"
 checksum=e85df657aa8d9361af4fb122014d8f123a93bfe45a7662fba2b373d839dbd8d3
-nocross="gnome-shell can't be crosscompiled yet"
 
 conf_files="
 	/etc/gdm/custom.conf
@@ -40,10 +39,14 @@ gdm_homedir="/var/lib/gdm"
 build_options="gir"
 build_options_default="gir"
 
+if [ "$CROSS_BUILD" ]; then
+	hostmakedepends+=" glib-devel pam-devel"
+fi
+
 post_install() {
 	vinstall $FILESDIR/Xsession 755 etc/gdm
 
-	sed -i "s/pam_systemd\.so/pam_elogind.so/" $DESTDIR/etc/pam.d/*
+	vsed -i "s/pam_systemd\.so/pam_elogind.so/" $DESTDIR/etc/pam.d/*
 
 	# runit service
 	vsv gdm