#!/bin/bash


apt-get install -y libopendmarc-dev libspf2-dev
apt-get -y build-dep exim4/flidas
# https://wiki.debian.org/BuildingAPackage
apt-get install build-essential dpatch fakeroot devscripts equivs lintian quilt
mkct
apt-get source exim4/flidas

# to just patch heavy:
# first apply below patch, then build, then
#diff -u ./EDITME.exim4-light ./EDITME.exim4-heavy > /tmp/EDITME.exim4-heavy.diff
# remove extraneous differences
# meld ./debian/EDITME.exim4-heavy.diff /tmp/EDITME.exim4-heavy.diff
# diff -u ./debian/EDITME.exim4-heavy.diff /tmp/EDITME.exim4-heavy.diff
# edit the diff to get filenames right.


patch -p0 <<'EOF'
--- ./exim4-4.86.2/src/EDITME.orig      2019-07-31 11:34:22.284977059 -0400
+++ ./exim4-4.86.2/src/EDITME   2019-07-31 11:35:01.361206192 -0400
@@ -445,9 +445,9 @@
 # installed on your system (www.libspf2.org). Depending on where it is installed
 # you may have to edit the CFLAGS and LDFLAGS lines.

-# EXPERIMENTAL_SPF=yes
-# CFLAGS  += -I/usr/local/include
-# LDFLAGS += -lspf2
+EXPERIMENTAL_SPF=yes
+CFLAGS  += -I/usr/local/include
+LDFLAGS += -lspf2

 # Uncomment the following lines to add SRS (Sender rewriting scheme) support.
 # You need to have libsrs_alt installed on your system (srs.mirtol.com).
@@ -469,9 +469,9 @@

 # Uncomment the following line to add DMARC checking capability, implemented
 # using libopendmarc libraries.
-# EXPERIMENTAL_DMARC=yes
-# CFLAGS += -I/usr/local/include
-# LDFLAGS += -lopendmarc
+EXPERIMENTAL_DMARC=yes
+CFLAGS += -I/usr/local/include
+LDFLAGS += -lopendmarc


 # Uncomment the following line to support Events,
EOF

cd exim4-4.86.2
fakeroot debian/rules binary