Add version support also at the source distribution

Makefile.am

@@ -102,8 +102,12 @@ mkstream_SOURCES = \
 	cmdline/stream.c \
 	raid/memory.c
 
+# Add the .version file in the distribution
+dist-hook:
+	$(srcdir)/autover.sh > $(distdir)/.version
+
 EXTRA_DIST = \
-	autogen.sh \
+	autogen.sh autover.sh \
 	README AUTHORS HISTORY INSTALL COPYING TODO CHECK INSTALL.windows \
 	snapraid.d snapraid.1 snapraid.txt \
 	test/test-par1.conf \

autover.sh

@@ -0,0 +1,14 @@
+#!/bin/sh
+#
+
+if [ -d .git ]; then
+    # Get version from git tags, removing the 'v' prefix
+    VERSION=`git describe --match 'v*' | sed 's/^v//'`
+elif [ -f .version ]; then
+    # Get version from the .version file
+    VERSION=`cat .version`
+else
+    VERSION="none"
+fi
+
+printf '%s' "$VERSION"

configure.ac

@@ -1,7 +1,7 @@
 dnl Process this file with autoconf to produce a configure script.
 AC_PREREQ([2.65])
 dnl Get version number from git
-m4_define([git_revision], m4_esyscmd_s([git describe --match 'v*' | sed 's/^v//']))
+m4_define([git_revision], m4_esyscmd_s([./autover.sh]))
 AC_INIT([snapraid], [git_revision], [], [], [http://www.snapraid.it])
 AM_INIT_AUTOMAKE([foreign no-dependencies subdir-objects])
 AC_CONFIG_SRCDIR([cmdline/snapraid.c])