Flesh out gobject-introspection stuff a bit

configure.ac

diff --git a/configure.ac b/configure.ac
index 2fb058f..8911e25 100644
--- a/configure.ac
+++ b/configure.ac
@@ -49,6 +49,7 @@
 HB_LIBTOOL_VERSION_INFO=hb_libtool_current:hb_libtool_revision:hb_libtool_age
 AC_SUBST(HB_LIBTOOL_VERSION_INFO)
 
+GOBJECT_INTROSPECTION_CHECK([0.9.0])
 dnl GTK_DOC_CHECK([1.15],[--flavour no-tmpl])
 
 # Functions and headers

src/Makefile.am

diff --git a/src/Makefile.am b/src/Makefile.am
index 98c6cd5..2326b40 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -6,6 +6,7 @@
 CLEANFILES =
 DISTCLEANFILES =
 MAINTAINERCLEANFILES =
+DISTCHECK_CONFIGURE_FLAGS = --enable-introspection
 
 # The following warning options are useful for debugging: -Wpadded -Wcast-align
 #AM_CXXFLAGS =
@@ -208,8 +209,26 @@
 	HBHEADERS="$(HBHEADERS)" \
 	$(NULL)
 
-scan:
-	g-ir-scanner $(HBCFLAGS) $(HBHEADERS) -n hb --strip-prefix=hb --library libharfbuzz.la
+-include $(INTROSPECTION_MAKEFILE)
+INTROSPECTION_GIRS = hb-1.0.gir
+INTROSPECTION_SCANNER_ARGS = -I$(srcdir) -n hb --identifier-prefix=hb_
+INTROSPECTION_COMPILER_ARGS = --includedir=$(srcdir)
 
+if HAVE_INTROSPECTION
+
+hb-1.0.gir: libharfbuzz.la
+hb_1_0_gir_INCLUDES = GObject-2.0
+hb_1_0_gir_CFLAGS = $(INCLUDES) $(HBCFLAGS) -DHB_H -DHB_H_IN -DHB_OT_H -DHB_OT_H_IN
+hb_1_0_gir_LIBS = libharfbuzz.la
+hb_1_0_gir_FILES = $(HBHEADERS)
+
+girdir = $(datadir)/gir-1.0
+gir_DATA = $(INTROSPECTION_GIRS)
+
+typelibdir = $(libdir)/girepository-1.0
+typelib_DATA = $(INTROSPECTION_GIRS:.gir=.typelib)
+
+CLEANFILES += $(gir_DATA) $(typelib_DATA)
+endif
 
 -include $(top_srcdir)/git.mk