sysui: g-ir-scanner is not available in when introspection is disabled

Should fix the RHEL6 build.

Change-Id: I3d6e6a2b43c2d6a43ea0686600cf2f893c518cc8
Reviewed-on: https://gerrit.libreoffice.org/18566Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>

config_host.mk.in

@@ -283,6 +283,7 @@ export ICU_RECLASSIFIED_CLOSE_PARENTHESIS=@ICU_RECLASSIFIED_CLOSE_PARENTHESIS@
 export ICU_RECLASSIFIED_CONDITIONAL_JAPANESE_STARTER=@ICU_RECLASSIFIED_CONDITIONAL_JAPANESE_STARTER@
 export ICU_RECLASSIFIED_HEBREW_LETTER=@ICU_RECLASSIFIED_HEBREW_LETTER@
 export ICU_RECLASSIFIED_PREPEND_SET_EMPTY=@ICU_RECLASSIFIED_PREPEND_SET_EMPTY@
+export INTROSPECTION_SCANNER=@INTROSPECTION_SCANNER@
 export ILIB=@ILIB@
 export INSTALLDIR=@INSTALLDIR@
 export INSTALLDIRNAME=@INSTALLDIRNAME@

sysui/CustomTarget_share.mk

@@ -180,6 +180,7 @@ $(share_WORKDIR)/%/create_tree.sh: $(share_SRCDIR)/share/create_tree.sh $(share_
 	echo "ICON_SOURCE_DIR=$(SRCDIR)/sysui/desktop/icons" >> $@
 	echo "APPDATA_SOURCE_DIR=$(SRCDIR)/sysui/desktop/appstream-appdata" >> $@
 	echo "PRODUCTVERSION=$(PRODUCTVERSION)" >> $@
+	echo "INTROSPECTION_SCANNER=$(INTROSPECTION_SCANNER)" >> $@
 	cat $< >> $@
 	chmod 774 $@
 

sysui/desktop/share/create_tree.sh

@@ -88,15 +88,17 @@ for i in base calc draw impress writer; do
 done
 
 # Generate gobject-introspection files
-mkdir -p "${DESTDIR}/${PREFIXDIR}/share/gir-1.0"
-g-ir-scanner "${SRCDIR}/include/LibreOfficeKit/LibreOfficeKitGtk.h" "${SRCDIR}/libreofficekit/source/gtk/lokdocview.cxx" \
-             `${PKG_CONFIG} --cflags gobject-introspection-1.0 gtk+-3.0` -I"${SRCDIR}/include/" \
-             --include=GLib-2.0 --include=GObject-2.0 --include=Gio-2.0 \
-             --library=libreofficekitgtk --library-path="${DESTDIR}/${INSTALLDIR}/program" \
-             --include=Gdk-3.0 --include=GdkPixbuf-2.0 --include=Gtk-3.0 \
-             --namespace=LOKDocView --nsversion=0.1 --identifier-prefix=LOKDoc --symbol-prefix=lok_doc \
-             --output="${DESTDIR}/${PREFIXDIR}/share/gir-1.0/LOKDocView-0.1.gir" --warn-all --no-libtool
+if [ -n "$INTROSPECTION_SCANNER" ]; then
+    mkdir -p "${DESTDIR}/${PREFIXDIR}/share/gir-1.0"
+    g-ir-scanner "${SRCDIR}/include/LibreOfficeKit/LibreOfficeKitGtk.h" "${SRCDIR}/libreofficekit/source/gtk/lokdocview.cxx" \
+                 `${PKG_CONFIG} --cflags gobject-introspection-1.0 gtk+-3.0` -I"${SRCDIR}/include/" \
+                 --include=GLib-2.0 --include=GObject-2.0 --include=Gio-2.0 \
+                 --library=libreofficekitgtk --library-path="${DESTDIR}/${INSTALLDIR}/program" \
+                 --include=Gdk-3.0 --include=GdkPixbuf-2.0 --include=Gtk-3.0 \
+                 --namespace=LOKDocView --nsversion=0.1 --identifier-prefix=LOKDoc --symbol-prefix=lok_doc \
+                 --output="${DESTDIR}/${PREFIXDIR}/share/gir-1.0/LOKDocView-0.1.gir" --warn-all --no-libtool
 
-mkdir -p "${DESTDIR}/${LIBDIR}/girepository-1.0"
-g-ir-compiler "${DESTDIR}/${PREFIXDIR}/share/gir-1.0/LOKDocView-0.1.gir" \
-              --output="${DESTDIR}/${LIBDIR}/girepository-1.0/LOKDocView-0.1.typelib"
+    mkdir -p "${DESTDIR}/${LIBDIR}/girepository-1.0"
+    g-ir-compiler "${DESTDIR}/${PREFIXDIR}/share/gir-1.0/LOKDocView-0.1.gir" \
+                  --output="${DESTDIR}/${LIBDIR}/girepository-1.0/LOKDocView-0.1.typelib"
+fi