v4.19.13 snapshot.
diff --git a/tools/perf/ui/gtk/Build b/tools/perf/ui/gtk/Build
new file mode 100644
index 0000000..ec22e89
--- /dev/null
+++ b/tools/perf/ui/gtk/Build
@@ -0,0 +1,9 @@
+CFLAGS_gtk += -fPIC $(GTK_CFLAGS)
+
+gtk-y += browser.o
+gtk-y += hists.o
+gtk-y += setup.o
+gtk-y += util.o
+gtk-y += helpline.o
+gtk-y += progress.o
+gtk-y += annotate.o