tidy up autoconfiguration of docbook stuff

 * use --nonet, so xmllint and co don't go off trying to download
   stuff from the web

 * use the http:// reference for the stylesheet, so we don't have to
   search the filesystem for it (should speedup ./configure)

aclocal.m4

@@ -793,33 +793,30 @@ fi
 ])# FP_PROG_XSLTPROC
 
 
-# FP_DIR_DOCBOOK_XSL(XSL-DIRS)
+# FP_DOCBOOK_XSL(XSL-DIRS)
 # ----------------------------
 # Check which of the directories XSL-DIRS contains DocBook XSL stylesheets. The
-# output variable DIR_DOCBOOK_XSL will contain the first usable directory or
+# output variable HAVE_DOCBOOK_XSL will contain the first usable directory or
 # will be empty if none could be found.
-AC_DEFUN([FP_DIR_DOCBOOK_XSL],
+AC_DEFUN([FP_DOCBOOK_XSL],
 [AC_REQUIRE([FP_PROG_XSLTPROC])dnl
 if test -n "$XsltprocCmd"; then
-  AC_CACHE_CHECK([for DocBook XSL stylesheet directory], fp_cv_dir_docbook_xsl,
+  AC_CACHE_CHECK([for DocBook XSL stylesheet], fp_cv_dir_docbook_xsl,
   [FP_GEN_DOCBOOK_XML
   fp_cv_dir_docbook_xsl=no
-  for fp_var in $1; do
-     if $XsltprocCmd ${fp_var}/html/docbook.xsl conftest.xml > /dev/null 2>&1; then
-        fp_cv_dir_docbook_xsl=$fp_var
-        break
-     fi
-  done
+  if $XsltprocCmd --nonet http://docbook.sourceforge.net/release/xsl/current/html/chunk.xsl conftest.xml > /dev/null 2>&1; then
+     fp_cv_dir_docbook_xsl=yes
+  fi
   rm -rf conftest*])
 fi
 if test x"$fp_cv_dir_docbook_xsl" = xno; then
   AC_MSG_WARN([cannot find DocBook XSL stylesheets, you will not be able to build the documentation])
-  DIR_DOCBOOK_XSL=
+  HAVE_DOCBOOK_XSL=NO
 else
-  DIR_DOCBOOK_XSL=$fp_cv_dir_docbook_xsl
+  HAVE_DOCBOOK_XSL=YES
 fi
-AC_SUBST([DIR_DOCBOOK_XSL])
-])# FP_DIR_DOCBOOK_XSL
+AC_SUBST([HAVE_DOCBOOK_XSL])
+])# FP_DOCBOOK_XSL
 
 
 # FP_PROG_XMLLINT
@@ -841,7 +838,7 @@ AC_DEFUN([FP_CHECK_DOCBOOK_DTD],
 if test -n "$XmllintCmd"; then
   AC_MSG_CHECKING([for DocBook DTD])
   FP_GEN_DOCBOOK_XML
-  if $XmllintCmd --valid --noout conftest.xml > /dev/null 2>&1; then
+  if $XmllintCmd --nonet --valid --noout conftest.xml > /dev/null 2>&1; then
     AC_MSG_RESULT([ok])
   else
     AC_MSG_RESULT([failed])

configure.ac

@@ -621,8 +621,7 @@ fi
 
 dnl ** check for DocBook toolchain
 FP_CHECK_DOCBOOK_DTD
-FP_DIR_DOCBOOK_XSL([/usr/share/xml/docbook/stylesheet/nwalsh/current /usr/share/xml/docbook/stylesheet/nwalsh /usr/share/xml/docbook/xsl-stylesheets* /usr/share/sgml/docbook/docbook-xsl-stylesheets* /usr/share/sgml/docbook/xsl-stylesheets* /opt/kde?/share/apps/ksgmltools2/docbook/xsl /usr/share/docbook-xsl /usr/share/sgml/docbkxsl /usr/local/share/xsl/docbook /sw/share/xml/xsl/docbook-xsl /opt/local/share/xsl/docbook-xsl])
-
+FP_DOCBOOK_XSL
 FP_PROG_DBLATEX
 
 FP_PROG_HSTAGS
@@ -922,7 +921,7 @@ else
 fi
 AC_SUBST(HavePapi)
 
-if test "$DIR_DOCBOOK_XSL" = "" ||
+if test "$HAVE_DOCBOOK_XSL" = "" ||
    test "$XsltprocCmd" = ""
 then
     BUILD_DOCBOOK_HTML=NO

mk/config.mk.in

@@ -842,18 +842,17 @@ ISCC                    =
 #-----------------------------------------------------------------------------
 # DocBook XML stuff
 
-BUILD_DOCBOOK_HTML = @BUILD_DOCBOOK_HTML@
-BUILD_DOCBOOK_PS = @BUILD_DOCBOOK_PS@
-BUILD_DOCBOOK_PDF = @BUILD_DOCBOOK_PDF@
-DBLATEX		= @DblatexCmd@
-XSLTPROC		= @XsltprocCmd@
-XMLLINT			= @XmllintCmd@
-
-DIR_DOCBOOK_XSL		= @DIR_DOCBOOK_XSL@
-
-XSLTPROC_LABEL_OPTS	= --stringparam toc.section.depth 3 \
-			  --stringparam section.autolabel 1 \
-			  --stringparam section.label.includes.component.label 1
+BUILD_DOCBOOK_HTML       = @BUILD_DOCBOOK_HTML@
+BUILD_DOCBOOK_PS         = @BUILD_DOCBOOK_PS@
+BUILD_DOCBOOK_PDF        = @BUILD_DOCBOOK_PDF@
+DBLATEX                  = @DblatexCmd@
+XSLTPROC                 = @XsltprocCmd@
+XMLLINT                  = @XmllintCmd@
+HAVE_DOCBOOK_XSL	 = @HAVE_DOCBOOK_XSL@
+XSLTPROC_HTML_STYLESHEET = http://docbook.sourceforge.net/release/xsl/current/html/chunk.xsl
+XSLTPROC_LABEL_OPTS	 = --stringparam toc.section.depth 3 \
+			   --stringparam section.autolabel 1 \
+			   --stringparam section.label.includes.component.label 1
 
 #-----------------------------------------------------------------------------
 # 		FPtools support software

rules/docbook.mk

@@ -34,8 +34,10 @@ $1/$2/index.html: $$($1_DOCBOOK_SOURCES)
 	"$$(XSLTPROC)" --stringparam base.dir $$(dir $$@) \
 	               --stringparam use.id.as.filename 1 \
 	               --stringparam html.stylesheet fptools.css \
+		       --nonet \
 	               $$(XSLTPROC_LABEL_OPTS) $$(XSLTPROC_OPTS) \
-	               $$(DIR_DOCBOOK_XSL)/html/chunk.xsl $1/$2.xml
+		       $$(XSLTPROC_HTML_STYLESHEET) \
+	               $1/$2.xml
 	cp mk/fptools.css $$(dir $$@)
 else
 html_$1 :