--- contrib/scripts/install_prereq	(Asterisk 13.20)
+++ contrib/scripts/install_prereq	(working copy)
@@ -53,2 +53,18 @@
 # Basic build system:
+PACKAGES_NBSD="gmake pkg-config"
+# Asterisk: basic requirements:
+PACKAGES_NBSD="$PACKAGES_NBSD editline jansson sqlite3 libuuid libxml2"
+# Asterisk: for addons:
+PACKAGES_NBSD="$PACKAGES_NBSD speex speexdsp libogg libvorbis alsa-lib portaudio-devel curl bison flex"
+PACKAGES_NBSD="$PACKAGES_NBSD postgresql10-client unixodbc libltdl neon gmime lua52 uriparser libxslt openssl"
+PACKAGES_NBSD="$PACKAGES_NBSD mysql-client radiusclient-ng freetds bash"
+PACKAGES_NBSD="$PACKAGES_NBSD net-snmp iksemel popt libical spandsp"
+PACKAGES_NBSD="$PACKAGES_NBSD imap-uw srtp gsm doxygen graphviz libzip openldap-client"
+PACKAGES_NBSD="$PACKAGES_NBSD codec2 fftw libsndfile unbound"
+# Asterisk: for the unpackaged below:
+PACKAGES_NBSD="$PACKAGES_NBSD wget subversion-base"
+# Asterisk: for ./configure --with-pjproject-bundled:
+PACKAGES_NBSD="$PACKAGES_NBSD bzip2 patch python27"
+
+# Basic build system:
 PACKAGES_OBSD="gmake"
@@ -156,2 +172,13 @@
 
+handle_nbsd() {
+	extra_packs=`check_installed_pkgs $PACKAGES_NBSD`
+	if [ x"$extra_packs" != "x" ] ; then
+		if [ -z "$PKG_PATH" ] ; then
+			# see NetBSD Problem Report #48177
+			export PKG_PATH="http://cdn.NetBSD.org/pub/pkgsrc/packages/$(uname -s)/$(uname -p)/$(uname -r)/All"
+		fi
+		$testcmd pkg_add $extra_packs
+	fi
+}
+
 handle_obsd() {
@@ -233,3 +260,3 @@
 # A number of distributions we don't (yet?) support.
-if [ "$OS" != 'Linux' -a "$OS" != 'OpenBSD' -a "$OS" != 'FreeBSD' ]; then
+if [ "$OS" != 'Linux' -a "$OS" != 'NetBSD' -a "$OS" != 'OpenBSD' -a "$OS" != 'FreeBSD' ]; then
 	echo >&2 "$0: Your OS ($OS) is currently not supported. Aborting."
@@ -264,2 +291,4 @@
 	handle_rh
+elif [ "$OS" = 'NetBSD' ]; then
+	handle_nbsd
 elif [ "$OS" = 'OpenBSD' ]; then