[evince] Add configure option --disable-viewer

[Jan-Joost Spanjers <jspanjers src gnome org>]

commit eab1461b7416db80e380d4a60e70b9e912a120b6
Author: Hib Eris <hib hiberis nl>
Date:   Thu Dec 15 17:12:16 2011 +0100

    Add configure option --disable-viewer
    
    This allows you to disable the build of the document viewer.

 Makefile.am  |    9 +++++++--
 configure.ac |   18 ++++++++++++++++--
 2 files changed, 23 insertions(+), 4 deletions(-)
---
diff --git a/Makefile.am b/Makefile.am
index fbf02e0..3aadbf2 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -11,9 +11,14 @@ SUBDIRS = \
 	libdocument \
 	backend \
 	libview \
-	libmisc \
+	libmisc
+
+if ENABLE_VIEWER
+SUBDIRS += shell
+endif
+
+SUBDIRS += \
 	properties \
-	shell \
 	po \
 	help
 
diff --git a/configure.ac b/configure.ac
index 8aabc97..391a02f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -380,7 +380,21 @@ fi
 
 AM_CONDITIONAL([ENABLE_NAUTILUS],[test "$enable_nautilus" = "yes"])
 
-# Check for thumbnailer build
+# ***************
+# Document Viewer
+# ***************
+
+AC_ARG_ENABLE(
+  [viewer],
+  [AS_HELP_STRING([--disable-viewer], [Disable GNOME Document viewer])],
+  [],
+  [enable_viewer=yes]
+)
+AM_CONDITIONAL([ENABLE_VIEWER],[test "$enable_viewer" = "yes"])
+
+# ***************
+# Thumbnailer
+# ***************
 
 AC_ARG_ENABLE([thumbnailer],
   [AS_HELP_STRING([--disable-thumbnailer],
@@ -825,7 +839,7 @@ Tests ....................:  $enable_tests
 
 FRONTENDS
 
-Viewer ...................:  yes
+Viewer ...................:  $enable_viewer
 Previewer ................:  $enable_previewer
 Thumbnailer ..............:  $enable_thumbnailer
 Nautilus Extensions.......:  $enable_nautilus