package/asterisk: add support for dahdi

DAHDI is the 'framework' to drive actual telehony cards. Using telephony
cards without signalling is pretty much meaningless, so signalling will
be added in later commits.

libtonezone is provided by dhadi-tools, while the dahdi headers are
provided by dahdi-linux. Go figure.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>

package/asterisk/asterisk.mk

@@ -52,7 +52,6 @@ ASTERISK_CONF_OPTS = \
 	--without-cap \
 	--without-cpg \
 	--without-curses \
-	--without-dahdi \
 	--without-gtk2 \
 	--without-gmime \
 	--without-h323 \
@@ -95,7 +94,6 @@ ASTERISK_CONF_OPTS = \
 	--without-termcap \
 	--without-timerfd \
 	--without-tinfo \
-	--without-tonezone \
 	--without-unbound \
 	--without-unixodbc \
 	--without-vpb \
@@ -196,6 +194,13 @@ else
 ASTERISK_CONF_OPTS += --without-radius
 endif
 
+ifeq ($(BR2_PACKAGE_DAHDI_LINUX)$(BR2_PACKAGE_DAHDI_TOOLS),yy)
+ASTERISK_DEPENDENCIES += dahdi-linux dahdi-tools
+ASTERISK_CONF_OPTS += --with-dahdi --with-tonezone
+else
+ASTERISK_CONF_OPTS += --without-dahdi --without-tonezone
+endif # DAHDI
+
 ifeq ($(BR2_PACKAGE_OPENSSL),y)
 ASTERISK_DEPENDENCIES += openssl
 ASTERISK_CONF_OPTS += --with-ssl