gdl: added gir build option and cross build support.

srcpkgs/gdl/template

@@ -1,9 +1,9 @@
 # Template file for 'gdl'
 pkgname=gdl
 version=3.12.0
-revision=1
+revision=2
 build_style=gnu-configure
-hostmakedepends="pkg-config intltool gobject-introspection"
+hostmakedepends="pkg-config intltool glib-devel"
 makedepends="libxml2-devel gtk+3-devel"
 short_desc="GNOME Docking Library"
 maintainer="Juan RP <xtraeme@gmail.com>"
@@ -12,11 +12,33 @@ homepage="https://developer.gnome.org/gdl/"
 distfiles="${GNOME_SITE}/${pkgname}/${version%.*}/${pkgname}-${version}.tar.xz"
 checksum=4770f959f31ed5e616fe623c284e8dd6136e49902d19b6e37938d34be4f6b88d
 
+# Package build options
+build_options="gir"
+desc_option_gir="Enable support for building gobject introspection data"
+
+# Disable gir for cross builds.
+if [ -z "$CROSS_BUILD" ]; then
+	build_options_default="gir"
+fi
+
+if [ "$build_option_gir" ]; then
+	configure_args+=" --enable-introspection"
+	makedepends+=" gobject-introspection"
+else
+	configure_args+=" --disable-introspection"
+fi
+
+pre_build() {
+	sed 's,-I$(includedir),,g' -i gdl/Makefile
+}
+
 gdl-devel_package() {
 	short_desc+=" - development files"
 	depends="gdl>=${version}"
 	pkg_install() {
+		if [ "$build_option_gir" ]; then
 			vmove usr/share/gir-1.0
+		fi
 		vmove usr/include
 		vmove usr/lib/pkgconfig
 		vmove "usr/lib/*.so"