1 files changed, 6 insertions, 1 deletions

diff --git a/configure.ac b/configure.ac
index 0d13e04..d1b1f62 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2,7 +2,7 @@
 # Process this file with autoconf to produce a configure script.
 
 AC_PREREQ(2.68)
-AC_INIT([libplist], [2.2.1], [https://github.com/libimobiledevice/libplist/issues],, [https://libimobiledevice.org])
+AC_INIT([libplist], [m4_esyscmd(./git-version-gen $RELEASE_VERSION)], [https://github.com/libimobiledevice/libplist/issues],, [https://libimobiledevice.org])
 AM_INIT_AUTOMAKE([dist-bzip2 no-dist-gzip check-news])
 m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES])
 AC_CONFIG_SRCDIR([src/])
@@ -19,6 +19,11 @@ LIBPLIST_SO_VERSION=6:0:3
 
 AC_SUBST(LIBPLIST_SO_VERSION)
 
+# Check if we have a version defined
+if test -z $PACKAGE_VERSION; then
+  AC_MSG_ERROR([PACKAGE_VERSION is not defined. Make sure to configure a source tree checked out from git or that .tarball-version is present.])
+fi
+
 # Checks for programs.
 AC_PROG_CC
 AC_PROG_CXX