bug fix, make dist did not work without wml installed.

[[Imported from SVN: r5021]]

doc/Makefile.am

@@ -5,8 +5,11 @@ SUBDIRS = devel doxygen layout buildsystem
 
 # only build html pages, if documentation is enabled
 if BUILD_DOCS
+# only build html when wml is available
+if WML
  PAGES = view-concept.html installation-notes.html contrib-software.html
 endif
+endif
 
 # automatically create these web pages
 all: $(PAGES)

doc/devel/Makefile.am

 # $Id$
 
 if BUILD_DOCS
+# only build html when wml is available
+if WML
 PAGES = codingstyle.html portability.html \
   ugreader.html tests.html features.html indexidsets.html
 endif
+endif
 
 all: $(PAGES)
 

doc/doxygen/Makefile.am

@@ -2,7 +2,10 @@
 
 if BUILD_DOCS
   DOXYGENTAG = doxygen-tag
+# only build html when wml is available
+if WML
   WHAT = bestpractice.html
+endif
   DOXYGEN_HTML = html
   DOXYGEN_DIST = html-dist
 endif