add missing dependency

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>

diff --git a/Makefile b/Makefile
index 193c3768452e61b7d7a769f733ec19f4617a5731..d799b9946f614de113fddc8a32436aa34ac7e579 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -60,6 +60,8 @@ droplet.ppm: droplet.svg Makefile
        | pnmdepth 255                                  \
        | $(make_pnm)
 
+$(addsuffix .ps, $(BOOK_STEMS)): pumpkin-books.ps
+
 book-%.pdf: book-%.eps
        rm -f $@; ps2pdf $<