Fix problem building with --without-libplot

diff --git a/src/output/charts/dummy-chart.c b/src/output/charts/dummy-chart.c
index e22f958f7c8e81547c9b103d0de3b37628ce07ee..e00a41f7aa7a49629c8c418a95d4a64b892ea2f6 100644 (file)
--- a/src/output/charts/dummy-chart.c
+++ b/src/output/charts/dummy-chart.c
@@ -32,6 +32,26 @@
 #error This file should be used only when compiling without charts.
 #endif
 
+void
+chart_write_legend (struct chart *ch UNUSED)
+{
+}
+
+void
+chart_vector (struct chart *ch UNUSED, double x UNUSED, double y UNUSED)
+{
+}
+
+void
+chart_vector_end (struct chart *ch UNUSED)
+{
+}
+
+void
+chart_vector_start (struct chart *ch UNUSED, const char *name UNUSED)
+{
+}
+
 void
 chart_write_title (struct chart *chart UNUSED, const char *title UNUSED, ...)
 {