--- contrib/scripts/install_prereq	(Asterisk 15.20)
+++ contrib/scripts/install_prereq	(working copy)
@@ -53,2 +53,18 @@
 # Basic build system:
+PACKAGES_ARCH="make gcc pkg-config"
+# Asterisk: basic requirements:
+PACKAGES_ARCH="$PACKAGES_ARCH libedit jansson libutil-linux libxml2 sqlite"
+# Asterisk: for addons:
+PACKAGES_ARCH="$PACKAGES_ARCH speex speexdsp libogg libvorbis alsa-lib portaudio curl xmlstarlet bison flex"
+PACKAGES_ARCH="$PACKAGES_ARCH postgresql-libs unixodbc libtool neon gmime lua uriparser libxslt openssl"
+PACKAGES_ARCH="$PACKAGES_ARCH libmariadbclient bluez-libs radcli freetds bash"
+PACKAGES_ARCH="$PACKAGES_ARCH net-snmp libnewt popt libical spandsp"
+PACKAGES_ARCH="$PACKAGES_ARCH c-client binutils libsrtp gsm doxygen graphviz zlib libldap"
+PACKAGES_ARCH="$PACKAGES_ARCH fftw libsndfile unbound"
+# Asterisk: for the unpackaged below:
+PACKAGES_ARCH="$PACKAGES_ARCH wget subversion"
+# Asterisk: for ./configure --with-pjproject-bundled:
+PACKAGES_ARCH="$PACKAGES_ARCH bzip2 patch python2"
+
+# Basic build system:
 PACKAGES_OBSD="gmake"
@@ -120,2 +136,11 @@
 
+check_installed_pacman() {
+	for pack in "$@"
+	do
+		if ! pacman -Q --explicit $pack >/dev/null 2>/dev/null
+		then echo $pack
+		fi
+	done
+}
+
 check_installed_pkgs() {
@@ -156,2 +181,9 @@
 
+handle_arch() {
+	extra_packs=`check_installed_pacman $PACKAGES_ARCH`
+	if [ x"$extra_packs" != "x" ] ; then
+		$testcmd pacman -S --asexplicit --noconfirm $extra_packs
+	fi
+}
+
 handle_obsd() {
@@ -264,2 +296,6 @@
 	handle_rh
+elif [ -r /etc/arch-release ]; then
+	handle_arch
+elif [ -f /etc/os-release ] && . /etc/os-release && [ "$ID_LIKE" = "archlinux" ]; then
+	handle_arch # $ID=arch
 elif [ "$OS" = 'OpenBSD' ]; then