nautilus: added gir build option to allow cross compilation.

srcpkgs/nautilus/template

@@ -1,12 +1,11 @@
 # Template file for 'nautilus'
 pkgname=nautilus
 version=3.18.1
-revision=1
+revision=2
 build_style=gnu-configure
 configure_args="--disable-update-mimedb --disable-debug
- --disable-schemas-compile --disable-nst-extension"
-hostmakedepends="pkg-config intltool gobject-introspection
- glib-devel"
+ --disable-schemas-compile --disable-nst-extension $(vopt_enable gir introspection)"
+hostmakedepends="pkg-config intltool glib-devel $(vopt_if gir gobject-introspection)"
 makedepends="gtk+3-devel libnotify-devel libexif-devel exempi-devel
  libxml2-devel tracker-devel gnome-desktop-devel"
 depends="hicolor-icon-theme desktop-file-utils gsettings-desktop-schemas>=3.14"
@@ -17,6 +16,11 @@ license="GPL-2, LGPL-2.1"
 distfiles="${GNOME_SITE}/$pkgname/${version%.*}/$pkgname-$version.tar.xz"
 checksum=9db310b255268f1bd5e93642821a138029550d96a51b408528377d6b121d55ad
 
+build_options="gir"
+if [ -z "$CROSS_BUILD" ]; then
+	build_options_default="gir"
+fi
+
 libnautilus_package() {
 	short_desc+=" - shared libraries"
 	pkg_install() {
@@ -30,7 +34,9 @@ nautilus-devel_package() {
 		vmove usr/include
 		vmove usr/lib/pkgconfig
 		vmove "usr/lib/*.so"
-		vmove usr/share/gir-1.0
 		vmove usr/share/gtk-doc
+		if [ "$build_option_gir" ]; then
+			vmove usr/share/gir-1.0
+		fi
 	}
 }