From fe918dcc3ebce2554aa9128a536056d77aaafbd5 Mon Sep 17 00:00:00 2001
From: Tzafrir Cohen <tzafrir@debian.org>
Date: Sun, 3 Jul 2016 18:32:21 +0200
Subject: [PATCH] Save/restore files modified by autoreconf

Hopefully this is needed and really works.
---
 debian/.gitignore     |  1 +
 debian/control        |  1 +
 debian/rules          | 21 +++++++++++++++++++++
 debian/savedfiles.lst | 27 +++++++++++++++++++++++++++
 4 files changed, 50 insertions(+)
 create mode 100644 debian/savedfiles.lst

diff --git a/debian/.gitignore b/debian/.gitignore
index 19918a3..97a2158 100644
--- a/debian/.gitignore
+++ b/debian/.gitignore
@@ -8,4 +8,5 @@ dahdi/
 files
 libtonezone-dev/
 libtonezone2.0/
+savedfiles.cpio
 tmp/
diff --git a/debian/control b/debian/control
index 154d584..e2c6ed1 100644
--- a/debian/control
+++ b/debian/control
@@ -7,6 +7,7 @@ Uploaders: Tzafrir Cohen <tzafrir@debian.org>, Mark Purcell <msp@debian.org>
 Build-Depends: debhelper (>= 9),
  autoconf,
  automake,
+ cpio,
  dh-autoreconf,
  pkg-config,
  dahdi-source (>= 1:2.7), libnewt-dev, bzip2, libusb-dev, asciidoc, groff, man-db
diff --git a/debian/rules b/debian/rules
index 40f3691..566c982 100755
--- a/debian/rules
+++ b/debian/rules
@@ -21,9 +21,30 @@ UPFILENAME := $(PACKAGE_SRC)_$(UPVERSION).orig.tar.gz
 FILENAME := $(PACKAGE_SRC)_$(DEB_BASE_VERSION).orig.tar.gz
 URL := http://downloads.asterisk.org/pub/telephony/$(PACKAGE_SRC)/releases/$(PACKAGE_SRC)-$(UPVERSION).tar.gz
 
+CHANGED_FILES_LIST = debian/savedfiles.lst
+CHANGED_FILES_ARCHIVE = debian/savedfiles.cpio
+
 %:
 	dh $@ --with autoreconf
 
+override_dh_autoreconf:
+	if [ ! -f "$(CHANGED_FILES_ARCHIVE)" -a -f Makefile.in ]; then \
+	  cpio -o < $(CHANGED_FILES_LIST) > $(CHANGED_FILES_ARCHIVE); \
+	fi
+	dh_autoreconf
+
+override_dh_autoreconf_clean:
+	dh_autoreconf_clean
+	if [ -f "$(CHANGED_FILES_ARCHIVE)" ]; then \
+	  cpio -idu < $(CHANGED_FILES_ARCHIVE) && \
+	  rm -f $(CHANGED_FILES_ARCHIVE); \
+	fi
+
+# An ugly workaround because those files are included in the tarball
+override_dh_clean:
+	dh_clean -X autom4te.cache
+
+
 override_dh_auto_build:
 	$(MAKE) all docs
 	# FIXME: xpp/README.Astribank.html
diff --git a/debian/savedfiles.lst b/debian/savedfiles.lst
new file mode 100644
index 0000000..712a520
--- /dev/null
+++ b/debian/savedfiles.lst
@@ -0,0 +1,27 @@
+Makefile.in
+aclocal.m4
+autoconfig.h.in
+autom4te.cache/output.0
+autom4te.cache/output.1
+autom4te.cache/output.2
+autom4te.cache/requests
+autom4te.cache/traces.0
+autom4te.cache/traces.1
+autom4te.cache/traces.2
+auxdir/config.guess
+auxdir/config.sub
+auxdir/install-sh
+auxdir/ltmain.sh
+configure
+doc/Makefile.in
+hotplug/Makefile.in
+m4/libtool.m4
+m4/ltoptions.m4
+m4/ltsugar.m4
+m4/ltversion.m4
+m4/lt~obsolete.m4
+ppp/Makefile.in
+xpp/Makefile.in
+xpp/oct612x/Makefile.in
+xpp/perl_modules/Makefile.in
+xpp/xtalk/Makefile.in