[empathy/gnome-2-34] Check for telepathy-yell if requested

[Sjoerd Simons <sjoerds src gnome org>]

commit f128fa86842918dc69b4d716b1f2ba36d1244639
Author: Emilio Pozuelo Monfort <emilio pozuelo collabora co uk>
Date:   Fri Feb 18 15:49:24 2011 +0000

    Check for telepathy-yell if requested

 autogen.sh   |   14 +++++++++++++-
 configure.ac |   17 +++++++++++++++++
 2 files changed, 30 insertions(+), 1 deletions(-)
---
diff --git a/autogen.sh b/autogen.sh
index 9c091dc..0e85e5c 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -17,6 +17,18 @@ which gnome-autogen.sh || {
     echo "You need to install gnome-common from the GNOME CVS"
     exit 1
 }
-USE_GNOME2_MACROS=1 USE_COMMON_DOC_BUILD=yes . gnome-autogen.sh
 
+# Fetch submodules if needed
+if test ! -f telepathy-yell/autogen.sh;
+then
+  echo "+ Setting up submodules"
+  git submodule init
+fi
+git submodule update
+
+# launch tp-yell's autogen.sh
+cd telepathy-yell
+sh autogen.sh --no-configure
+cd ..
 
+USE_GNOME2_MACROS=1 USE_COMMON_DOC_BUILD=yes . gnome-autogen.sh
diff --git a/configure.ac b/configure.ac
index 70d8e5b..413a244 100644
--- a/configure.ac
+++ b/configure.ac
@@ -56,6 +56,12 @@ NETWORK_MANAGER_REQUIRED=0.7.0
 WEBKIT_REQUIRED=1.1.15
 GNOME_CONTROL_CENTER_GTK3_REQUIRED=2.31.4
 
+# telepathy-yell
+prev_top_build_prefix=$ac_top_build_prefix
+AX_CONFIG_DIR([telepathy-yell])
+ac_top_build_prefix=$prev_top_build_prefix
+export PKG_CONFIG_PATH=$PKG_CONFIG_PATH:"$ac_top_build_prefix"telepathy-yell/telepathy-yell
+
 AC_CONFIG_MACRO_DIR([m4])
 AC_CONFIG_HEADERS([config.h])
 AC_CONFIG_SRCDIR([configure.ac])
@@ -163,6 +169,17 @@ PKG_CHECK_MODULES(EMPATHY_AV,
 ])
 
 # -----------------------------------------------------------
+# Call interface
+# -----------------------------------------------------------
+AC_ARG_WITH(call,
+            AC_HELP_STRING([--with-call], [build with Call interface support]),,
+            [with_call=yes])
+if test "x$with_call" = "xyes" ; then
+   PKG_CHECK_MODULES(YELL, [telepathy-yell])
+   AC_DEFINE(HAVE_CALL, 1, [Define if we have Call interface support])
+fi
+
+# -----------------------------------------------------------
 # evolution-data-server (about-me)
 # -----------------------------------------------------------
 AC_ARG_WITH(eds,