notmuch: add binding for ruby

cross-compiling ruby binding is failed for now.

srcpkgs/notmuch-ruby

@@ -0,0 +1 @@
+notmuch

srcpkgs/notmuch/template

@@ -26,6 +26,11 @@ case "$XBPS_TARGET_MACHINE" in
 	*) _args="--without-emacs";;
 esac
 
+if [ ! "$CROSS_BUILD" ]; then
+	makedepends+=" ruby-devel"
+	subpackages+=" notmuch-ruby"
+fi
+
 do_configure() {
 	./configure --prefix=/usr \
 		--bashcompletiondir=/usr/share/bash-completion/completions \
@@ -35,7 +40,6 @@ do_configure() {
 do_build() {
 	make ${makejobs} V=1
 	make -C contrib/notmuch-mutt
-	make -C bindings
 	cd bindings/python
 	python2 setup.py build --build-base=build-2
 	python3 setup.py build --build-base=build-3
@@ -43,11 +47,15 @@ do_build() {
 
 do_install() {
 	make DESTDIR=${DESTDIR} install
-	cd bindings/python
+	pushd bindings/python
 	python2 setup.py build --build-base=build-2 \
 		install --prefix=/usr --root=${DESTDIR}
 	python3 setup.py build --build-base=build-3 \
 		install --prefix=/usr --root=${DESTDIR}
+	popd
+	if [ ! "$CROSS_BUILD" ]; then
+		make DESTDIR=${DESTDIR} -C bindings/ruby install
+	fi
 }
 
 libnotmuch_package() {
@@ -109,3 +117,11 @@ notmuch-python3_package() {
 		vmove ${py3_sitelib}
 	}
 }
+
+notmuch-ruby_package() {
+	depends="libnotmuch>=${version}_${revision} ruby"
+	short_desc+=" - Ruby bindings"
+	pkg_install() {
+		vmove usr/lib/ruby
+	}
+}