[PATCH 1/2] doc: fix build dependencies

[Theophile Ranquet]

* doc/local.mk: Avoid overwriting Automake's rules.
---
 doc/local.mk | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/doc/local.mk b/doc/local.mk
index aaea996..cef4448 100644
--- a/doc/local.mk
+++ b/doc/local.mk
@@ -20,7 +20,14 @@ doc_bison_TEXINFOS =                            \
   doc/fdl.texi                                  \
   doc/gpl-3.0.texi
 
-TEXI2DVI = texi2dvi --build-dir=doc/bison.t2d
+# Cannot express dependencies directly on file names because of Automake.
+# Obfuscate with a variable.
+doc_bison = doc/bison
+$(doc_bison).dvi: $(FIGS_DOT:.dot=.eps)
+$(doc_bison).pdf: $(FIGS_DOT:.dot=.pdf)
+$(doc_bison).html: $(FIGS_DOT:.dot=.html)
+
+TEXI2DVI = texi2dvi --build-dir=doc/bison.t2d -I doc
 CLEANDIRS = doc/bison.t2d
 clean-local:
        rm -rf $(CLEANDIRS)
@@ -123,10 +130,6 @@ EXTRA_DIST +=                                              
                \
   $(FIGS_DOT:.dot=.eps) $(FIGS_DOT:.dot=.pdf) $(FIGS_DOT:.dot=.png)
 SUFFIXES += .dot .eps .pdf .png
 
-doc/bison.dvi:  $(FIGS_DOT:.dot=.eps)
-doc/bison.html: $(FIGS_DOT:.dot=.png)
-doc/bison.pdf:  $(FIGS_DOT:.dot=.pdf)
-
 .dot.eps:
        $(AM_V_GEN) $(MKDIR_P) `echo "./$@" | sed -e 's,/[^/]*$$,,'`
        $(AM_V_at) $(DOT) -Gmargin=0 -Teps $< >address@hidden
-- 
1.8.0