--- contrib/scripts/install_prereq	(Asterisk 13.20)
+++ contrib/scripts/install_prereq	(working copy)
@@ -132,2 +132,18 @@
 
+# Basic build system:
+PACKAGES_DBSD="gmake pkgconf"
+# Asterisk: basic requirements:
+PACKAGES_DBSD="$PACKAGES_DBSD libedit jansson e2fsprogs-libuuid sqlite3 libxml2"
+# Asterisk: for addons:
+PACKAGES_DBSD="$PACKAGES_DBSD speex speexdsp libogg libvorbis alsa-lib portaudio curl xmlstarlet bison flex"
+PACKAGES_DBSD="$PACKAGES_DBSD postgresql10-client unixODBC neon gmime26 lua52 uriparser libxslt libressl"
+PACKAGES_DBSD="$PACKAGES_DBSD mariadb101-client radcli freetds"
+PACKAGES_DBSD="$PACKAGES_DBSD net-snmp iksemel corosync newt popt libical spandsp"
+PACKAGES_DBSD="$PACKAGES_DBSD cclient binutils libsrtp gsm libilbc doxygen graphviz libzip openldap-client libhoard"
+PACKAGES_DBSD="$PACKAGES_DBSD codec2 fftw3 libsndfile unbound"
+# Asterisk: for the unpackaged below:
+PACKAGES_DBSD="$PACKAGES_DBSD wget subversion"
+# Asterisk: for ./configure --with-pjproject-bundled:
+PACKAGES_DBSD="$PACKAGES_DBSD bzip2 patch python"
+
 KVERS=`uname -r`
@@ -267,2 +283,9 @@
 
+handle_dbsd() {
+	extra_packs=`check_installed_fpkgs $PACKAGES_DBSD`
+	if [ x"$extra_packs" != "x" ] ; then
+		$testcmd pkg install -y $extra_packs
+	fi
+}
+
 handle_SUSE() {
@@ -337,3 +360,3 @@
 # A number of distributions we don't (yet?) support.
-if [ "$OS" != 'Linux' -a "$OS" != 'NetBSD' -a "$OS" != 'OpenBSD' -a "$OS" != 'FreeBSD' ]; then
+if [ "$OS" != 'Linux' -a "$OS" != 'NetBSD' -a "$OS" != 'OpenBSD' -a "$OS" != 'FreeBSD' -a "$OS" != 'DragonFly' ]; then
 	echo >&2 "$0: Your OS ($OS) is currently not supported. Aborting."
@@ -378,2 +401,4 @@
 	handle_fbsd
+elif [ "$OS" = 'DragonFly' ]; then
+	handle_dbsd
 fi