1diff --git i/libvaladoc/Makefile.am w/libvaladoc/Makefile.am
2index 8dc398cf1..a5d8a45b4 100644
3--- i/libvaladoc/Makefile.am
4+++ w/libvaladoc/Makefile.am
5@@ -176,9 +176,13 @@ endif
6 libvaladoc@PACKAGE_SUFFIX@_la_SOURCES = \
7 libvaladoc.vala.stamp \
8 $(libvaladoc_la_VALASOURCES:.vala=.c) \
9- gvc-compat.c \
10 $(NULL)
11
12+if ENABLE_GRAPHVIZ
13+libvaladoc@PACKAGE_SUFFIX@_la_SOURCES += \
14+ gvc-compat.c
15+endif
16+
17 valadoc@PACKAGE_SUFFIX@.vapi valadoc.h: libvaladoc.vala.stamp
18 libvaladoc.vala.stamp: $(libvaladoc_la_VALASOURCES)
19 $(VALA_V)$(VALAC) \