Created xidepend mechanism

winsup/doc/.cvsignore

@@ -1,4 +1,5 @@
 Makefile
+Makefile.dep
 
 autom4te.cache
 config.log

winsup/doc/ChangeLog

@@ -1,3 +1,11 @@
+2013-05-23  Warren Young  <warren@etr-usa.com>
+
+	* xidepend: New script, generates Makefile.dep from top-level XML
+	* .cvsignore: Ignoring Makefile.dep output
+	* Makefile: Creating Makefile.dep if it doesn't exist, including it
+	if it does, and removing it on 'make clean'
+	* Wishlist: Knocked autodependency generation off the list
+
 2013-05-23  Corinna Vinschen  <corinna@vinschen.de>
 
 	* cygwinenv.xml (cygwinenv-implemented-options): Explain new

winsup/doc/Makefile.in

@@ -21,6 +21,7 @@ exeext:=@build_exeext@
 XMLTO:=xmlto --skip-validation --with-dblatex
 
 include $(srcdir)/../Makefile.common
+-include $(srcdir)/Makefile.dep
 
 FAQ_SOURCES:= $(wildcard ${srcdir}/faq*.xml)
 
@@ -29,7 +30,7 @@ FAQ_SOURCES:= $(wildcard ${srcdir}/faq*.xml)
 .html.body:
 	$(srcdir)/bodysnatcher.pl $<
 
-all: Makefile \
+all: Makefile Makefile.dep \
 	cygwin-ug-net/cygwin-ug-net.html \
 	cygwin-ug-net/cygwin-ug-net-nochunks.html.gz \
 	cygwin-api/cygwin-api.html \
@@ -38,6 +39,7 @@ all: Makefile \
 	cygwin-api/cygwin-api.pdf
 
 clean:
+	rm -f Makefile.dep
 	rm -f doctool.exe doctool.o
 	rm -f cygwin-api.xml
 	rm -f *.html *.html.gz
@@ -84,3 +86,6 @@ TBDEPS = cygwin-ug-net/cygwin-ug-net.html cygwin-api/cygwin-api.html
 tarball : cygwin-docs.tar.bz2
 cygwin-docs.tar.bz2 : $(TBFILES) $(TBDEPS)
 	find $(TBFILES) $(TBDIRS) \! -type d | sort | tar -T - -cf -  | bzip2 > cygwin-docs.tar.bz2
+
+Makefile.dep: cygwin-ug-net.xml faq.xml
+	$(srcdir)/xidepend $^ > $@

winsup/doc/xidepend

@@ -0,0 +1,34 @@
+#!/bin/sh
+if [ "$1" = "-r" ]
+then
+	# We're being called recursively by another xidepend instance, so
+	# suppress outputs that only happen at the top level.
+	shift
+	subproc=1
+else
+	subproc=0
+fi
+
+for f in "$@"
+do
+	if fgrep -q 'xi:include' "$f"
+	then
+		# This file uses XIncludes.  Let's chase its deps recursively.
+		base=`echo $f | sed -e s/\.xml//`
+		if [ $subproc -eq 0 ] ; then echo -n "$base/$base.html:" ; fi
+
+		deps=`grep 'xi:include.*href' "$f" | cut -f2 -d\" | tr '\n' ' '`
+		echo -n " $deps"
+		for d in $deps
+		do
+			# Call ourselves recursively to continue to collect deps.
+			# The -r flag tells our subprocess that it is merely
+			# contributing to a dependency line in progress.
+			$0 -r $d
+		done
+
+		# If we're at the top recursion level, we have nothing else to
+		# add to this dependency line other than the newline.
+		if [ $subproc -eq 0 ] ; then echo ; fi
+	fi
+done