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DOXYGEN = doxygen

.PHONY: doc html

doc: html

html-local: %D%/Doxyfile
	$(DOXYGEN) $<

edit = sed -e "s|@ID@|$$Id|"                                                   \
           -e 's,@PACKAGE_NAME\@,$(PACKAGE_NAME),g'                            \
           -e 's,@PACKAGE_VERSION\@,$(PACKAGE_VERSION),g'                      \
           -e 's,@top_builddir\@,$(top_builddir),g'                            \
           -e 's,@top_srcdir\@,$(top_srcdir),g'

EXTRA_DIST += %D%/Doxyfile.in
CLEANFILES += %D%/Doxyfile
# Sed is used to generate Doxyfile from Doxyfile.in instead of
# configure, because the former is way faster than the latter.
# Moreover, this file is updated whenever ChangeLog is touched: using
# sed instead of configure saves us a lot of time.
%D%/Doxyfile: $(top_srcdir)/ChangeLog $(srcdir)/%D%/Doxyfile.in
	Id=`grep '^\$$Id' $(top_srcdir)/ChangeLog`;                                \
	$(edit) $(srcdir)/%D%/Doxyfile.in >%D%/Doxyfile

clean-local: clean-doc
clean-doc:
	rm -rf html latex