improve doc/Makefile

[Bruno Haible]

While creating the gnulib documentation, I ran into this TeX error 
"TeX capacity exceeded" again. Adding a hint about it to the Makefile:


2009-01-24  Bruno Haible  <address@hidden>

        * doc/Makefile (%.pdf): Clarify where to find texmf.cnf.
        (%.dvi): New rule.

--- doc/Makefile.orig   2009-01-24 16:15:26.000000000 +0100
+++ doc/Makefile        2009-01-24 16:11:41.000000000 +0100
@@ -1,5 +1,5 @@
 # Makefile for gnulib doc.
-# Copyright (C) 2004, 2006-2008 Free Software Foundation, Inc.
+# Copyright (C) 2004, 2006-2009 Free Software Foundation, Inc.
 #
 # Copying and distribution of this file, with or without modification,
 # are permitted in any medium without royalty provided the copyright
@@ -9,14 +9,18 @@
 
 MAKEINFO = env LANG= LC_MESSAGES= LC_ALL= LANGUAGE= makeinfo
 TEXI2HTML = $(MAKEINFO) --no-split --reference-limit=2000 --html
-%.html: %.texi
-       $(TEXI2HTML) -o $@ $<
 
 %.info: %.texi
        LANG= LC_MESSAGES= LC_ALL= LANGUAGE= makeinfo --no-split 
--reference-limit=2000 $<
 
+%.html: %.texi
+       $(TEXI2HTML) -o $@ $<
+
+%.dvi: %.texi
+       texi2dvi $< || { if texi2dvi $< 2>/dev/null | grep 'TeX capacity 
exceeded, sorry \[save size=' > /dev/null; then echo '*** You must increase the 
save_size in your texmf.cnf file, often located under /etc/texmf/.'; fi; exit 
1; }
+
 %.pdf: %.texi
-       texi2pdf $< || { if texi2pdf $< 2>/dev/null | grep 'TeX capacity 
exceeded, sorry \[save size=' > /dev/null; then echo '*** You must increase the 
save_size in your texmf.cnf file.'; fi; exit 1; }
+       texi2pdf $< || { if texi2pdf $< 2>/dev/null | grep 'TeX capacity 
exceeded, sorry \[save size=' > /dev/null; then echo '*** You must increase the 
save_size in your texmf.cnf file, often located under /etc/texmf/.'; fi; exit 
1; }
 
 all: info html dvi
 info: $(doc).info