# FIXME: Depending on the source files would be sufficient...
# This generates HTML_APIDOC_DIR as well as DOXYGEN_OUTPUT_DIR
$(DOXYGEN_OUTPUT_DIR).stamp: Doxyfile $(top_builddir)/libexif/libexif.la
$(DOXYGEN_OUTPUT_DIR).stamp $(HTML_APIDOC_DIR).stamp: Doxyfile $(top_builddir)/libexif/libexif.la
doxygen $<
echo > $@