--- quvi-0.9.1/configure.ac
+++ quvi-0.9.1/configure.ac
@@ -54,22 +54,30 @@
 PKG_CHECK_MODULES([gobject], [gobject-2.0 >= 2.24])
 PKG_CHECK_MODULES([glib], [glib-2.0 >= 2.24])
 
-PKG_CHECK_MODULES([json_glib], [json-glib-1.0 >= 0.12],
-  [have_json_glib=yes
-   AC_DEFINE([HAVE_JSON_GLIB], [1], [Define to json-glib package])
-  ],
-  [have_json_glib=no
-   AC_MSG_NOTICE([json-glib 0.12+ not found, building without json output])
-  ])
+AC_ARG_ENABLE([json],
+  AS_HELP_STRING([--disable-json], [Disable support for JSON output]))
+AS_IF([test "x$enable_json" != "xno"], [
+  PKG_CHECK_MODULES([json_glib], [json-glib-1.0 >= 0.12],
+    [have_json_glib=yes
+     AC_DEFINE([HAVE_JSON_GLIB], [1], [Define to json-glib package])
+    ],
+    [have_json_glib=no
+     AC_MSG_ERROR([json-glib 0.12+ not found])
+    ])
+])
 AM_CONDITIONAL([HAVE_JSON_GLIB], [test x"$have_json_glib" = "xyes"])
  
-PKG_CHECK_MODULES([libxml], [libxml-2.0 >= 2.7.8],
-  [have_libxml=yes
-   AC_DEFINE([HAVE_LIBXML], [1], [Define to libxml package])
-  ],
-  [have_libxml=no
-   AC_MSG_NOTICE([libxml 2.7.8+ not found, building without xml output])
-  ])
+AC_ARG_ENABLE([xml],
+  AS_HELP_STRING([--disable-xml], [Disable support for XML output]))
+AS_IF([test "x$enable_xml" != "xno"], [
+  PKG_CHECK_MODULES([libxml], [libxml-2.0 >= 2.7.8],
+    [have_libxml=yes
+     AC_DEFINE([HAVE_LIBXML], [1], [Define to libxml package])
+    ],
+    [have_libxml=no
+     AC_MSG_ERROR([libxml 2.7.8+ not found])
+    ])
+])
 AM_CONDITIONAL([HAVE_LIBXML], [test x"$have_libxml" = "xyes"])
 
 # Checks for header files.