libsigc++: check if doxygen is installed

diff --git a/make/libraries.mk b/make/libraries.mk
index 71fcaaa48a67c700f8fc8a7b611a8ae46e481f0b..760c37abdac453ce33e65a9e0d5dc94b89da804c 100755 (executable)
--- a/make/libraries.mk
+++ b/make/libraries.mk
@@ -754,7 +754,7 @@ $(D)/libdvbsi++: $(ARCHIVE)/libdvbsi++-$(LIBDVBSI_GIT).tar.bz2 | $(TARGETPREFIX)
        $(REMOVE)/libdvbsi++-$(LIBDVBSI_GIT)
        $(TOUCH)
 
-$(D)/libsigc: $(ARCHIVE)/libsigc++-$(LIBSIGC_VER).tar.xz | $(TARGETPREFIX)
+$(D)/libsigc: $(ARCHIVE)/libsigc++-$(LIBSIGC_VER).tar.xz | find-doxygen $(TARGETPREFIX)
        $(START_BUILD)
        $(REMOVE)/libsigc++-$(LIBSIGC_VER)
        $(UNTAR)/libsigc++-$(LIBSIGC_VER).tar.xz