From 58b0f108716f3c5bd1cd99be493ec1037a807a73 Mon Sep 17 00:00:00 2001
From: Patrick Ohly <patrick.ohly@intel.com>
Date: Thu, 13 Oct 2011 16:28:07 +0200
Subject: autotools: sharing libical between backends

Various backends (Evolution, ActiveSync, WebDAV) depend on
libical. This wasn't done correctly, with the result that
--enable-activesync without --enable-evolution and --enable-webdav
failed to compile because ENABLE_ICAL was unset by the WebDAV
configure.

Now backends can request libical support by setting need_ical="yes",
then later LIBICAL_LIBS/CFLAGS, ENABLE_ICAL define and condition
variable will be set accordingly. Similar to need_glib="yes".
---
 configure.ac | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'configure.ac')

diff --git a/configure.ac b/configure.ac
index d4ea63c4..8bb9fe57 100644
--- a/configure.ac
+++ b/configure.ac
@@ -929,6 +929,16 @@ if test "$need_glib" = "yes"; then
         BACKEND_CPPFLAGS="$BACKEND_CPPFLAGS $GLIB_CFLAGS $GTHREAD_CFLAGS $GOBJECT_CFLAGS"
 fi
 
+dnl use libical if and only if required by some backend
+if test "$need_ical" = "yes"; then
+   PKG_CHECK_MODULES(LIBICAL, libical,
+                     [true],
+                     [PKG_CHECK_MODULES(LIBICAL, libecal-1.2)])
+   AC_DEFINE(ENABLE_ICAL, 1, [libical in use])
+fi
+AM_CONDITIONAL([ENABLE_ICAL], [test "$need_ical" = "yes"])
+
+
 # Check for Qt if some backend needs it.
 if test "$need_qt_modules"; then
    AT_WITH_QT([-gui $need_qt_modules],
-- 
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