Modularise the RAOP stuff that requires OpenSSL and make it optional at compile time

configure.ac

@@ -1000,6 +1000,41 @@ AC_SUBST(POLKIT_LIBS)
 AC_SUBST(HAVE_POLKIT)
 AM_CONDITIONAL([HAVE_POLKIT], [test "x$HAVE_POLKIT" = x1])
 
+#### OpenSSL support (optional) ####
+
+AC_ARG_ENABLE([openssl],
+    AC_HELP_STRING([--disable-openssl], [Disable OpenSSL support (used for Airtunes/RAOP)]),
+        [
+            case "${enableval}" in
+                yes) openssl=yes ;;
+                no) openssl=no ;;
+                *) AC_MSG_ERROR(bad value ${enableval} for --disable-openssl) ;;
+            esac
+        ],
+        [openssl=auto])
+
+if test "x${openssl}" != xno ; then
+
+    PKG_CHECK_MODULES(OPENSSL, [ openssl > 0.9 ],
+        [
+            HAVE_OPENSSL=1
+            AC_DEFINE([HAVE_OPENSSL], 1, [Have OpenSSL])
+        ],
+        [
+            HAVE_OPENSSL=0
+            if test "x$openssl" = xyes ; then
+                AC_MSG_ERROR([*** OpenSSL support not found])
+            fi
+        ])
+else
+    HAVE_OPENSSL=0
+fi
+
+AC_SUBST(OPENSSL_CFLAGS)
+AC_SUBST(OPENSSL_LIBS)
+AC_SUBST(HAVE_OPENSSL)
+AM_CONDITIONAL([HAVE_OPENSSL], [test "x$HAVE_OPENSSL" = x1])
+
 ### Build and Install man pages ###
 AC_ARG_ENABLE(manpages,
         AS_HELP_STRING([--disable-manpages],[Disable building and installation of man pages]),
@@ -1201,6 +1236,11 @@ if test "x${HAVE_POLKIT}" = "x1" ; then
    ENABLE_POLKIT=yes
 fi
 
+ENABLE_OPENSSL=no
+if test "x${HAVE_OPENSSL}" = "x1" ; then
+   ENABLE_OPENSSL=yes
+fi
+
 ENABLE_PER_USER_ESOUND_SOCKET=no
 if test "x$per_user_esound_socket" = "x1" ; then
    ENABLE_PER_USER_ESOUND_SOCKET=yes
@@ -1232,6 +1272,7 @@ echo "
     Enable TCP Wrappers:           ${ENABLE_TCPWRAP}
     Enable libsamplerate:          ${ENABLE_LIBSAMPLERATE}
     Enable PolicyKit:              ${ENABLE_POLKIT}
+    Enable OpenSSL (for Airtunes): ${ENABLE_OPENSSL}
     System User:                   ${PA_SYSTEM_USER}
     System Group:                  ${PA_SYSTEM_GROUP}
     Realtime Group:                ${PA_REALTIME_GROUP}

src/Makefile.am

@@ -62,6 +62,10 @@ AM_CFLAGS += -DPA_MACHINE_ID=\"$(localstatedir)/lib/dbus/machine-id\"
 # This cool debug trap works on i386/gcc only
 AM_CFLAGS += '-DDEBUG_TRAP=__asm__("int $$3")'
 
+if HAVE_OPENSSL
+AM_CFLAGS += -I$(top_builddir)/src/modules/raop
+endif
+
 AM_LIBADD = $(PTHREAD_LIBS) $(INTLLIBS)
 AM_LDADD = $(PTHREAD_LIBS) $(INTLLIBS)
 
@@ -89,6 +93,7 @@ PA_THREAD_OBJS = \
 		pulsecore/semaphore-posix.c pulsecore/semaphore.h
 endif
 
+
 ###################################
 #          Extra files            #
 ###################################
@@ -1009,11 +1014,16 @@ librtp_la_SOURCES = \
 		modules/rtp/sdp.c modules/rtp/sdp.h \
 		modules/rtp/sap.c modules/rtp/sap.h \
 		modules/rtp/rtsp_client.c modules/rtp/rtsp_client.h \
-		modules/rtp/raop_client.c modules/rtp/raop_client.h \
+		modules/rtp/headerlist.c modules/rtp/headerlist.h
-		modules/rtp/headerlist.c modules/rtp/headerlist.h \
-		modules/rtp/base64.c modules/rtp/base64.h
 librtp_la_LDFLAGS = -avoid-version
-librtp_la_LIBADD = $(AM_LIBADD) libsocket-util.la libiochannel.la libsocket-client.la libioline.la libpulsecore.la -lssl
+librtp_la_LIBADD = $(AM_LIBADD) libsocket-util.la libiochannel.la libsocket-client.la libioline.la libpulsecore.la
+
+libraop_la_SOURCES = \
+        modules/raop/raop_client.c modules/raop/raop_client.h \
+        modules/raop/base64.c modules/raop/base64.h
+libraop_la_CFLAGS = $(AM_CFLAGS) $(OPENSSL_CFLAGS)
+libraop_la_LDFLAGS = -avoid-version
+libraop_la_LIBADD = $(AM_LIBADD) $(OPENSSL_LIBS) libsocket-util.la libiochannel.la libsocket-client.la libioline.la libpulsecore.la librtp.la
 
 # X11
 
@@ -1060,7 +1070,6 @@ modlibexec_LTLIBRARIES += \
 		module-remap-sink.la \
 		module-ladspa-sink.la \
 		module-esound-sink.la \
-		module-raop-sink.la \
 		module-tunnel-sink.la \
 		module-tunnel-source.la \
 		module-position-event-sounds.la
@@ -1127,8 +1136,7 @@ endif
 if HAVE_AVAHI
 modlibexec_LTLIBRARIES += \
 		module-zeroconf-publish.la \
-		module-zeroconf-discover.la \
+		module-zeroconf-discover.la
-		module-raop-discover.la
 endif
 
 if HAVE_LIRC
@@ -1186,6 +1194,17 @@ pulselibexec_PROGRAMS += \
 		proximity-helper
 endif
 
+if HAVE_OPENSSL
+modlibexec_LTLIBRARIES += \
+		libraop.la \
+		module-raop-sink.la
+if HAVE_AVAHI
+modlibexec_LTLIBRARIES += \
+		module-raop-discover.la
+endif
+endif
+
+
 # These are generated by a M4 script
 
 SYMDEF_FILES = \
@@ -1609,7 +1628,7 @@ module_bluetooth_device_la_CFLAGS = $(AM_CFLAGS) $(DBUS_CFLAGS)
 # Apple Airtunes/RAOP
 module_raop_sink_la_SOURCES = modules/module-raop-sink.c
 module_raop_sink_la_LDFLAGS = -module -avoid-version
-module_raop_sink_la_LIBADD = $(AM_LIBADD) libpulsecore.la libiochannel.la librtp.la
+module_raop_sink_la_LIBADD = $(AM_LIBADD) libpulsecore.la libiochannel.la librtp.la libraop.la
 
 module_raop_discover_la_SOURCES = modules/module-raop-discover.c
 module_raop_discover_la_LDFLAGS = -module -avoid-version