Add "make clean" target

[originally from svn r931]

diff --git a/doc/Makefile b/doc/Makefile
index 18d30e388289c490396a9ff916924f136834e6e6..7bd8513827470007039ef70b51c3032011b52b92 100644 (file)
--- a/doc/Makefile
+++ b/doc/Makefile
@@ -9,3 +9,6 @@ Contents.html: $(INPUTS)
        $(HOME)/src/buttress/build/buttress $(INPUTS)
        rm -f index.html
        ln -s Contents.html index.html
+
+clean:
+       rm -f *.html output.txt