Version number is now updated in include/zre.h only

configure.ac

@@ -2,11 +2,11 @@
 # Process this file with autoconf to produce a configure script.
 AC_PREREQ(2.61)
 #
-# Change the version number below after doing a public release.
+# The version number is extracted from include/zre.h using
+# the version.sh script. Hence, it should be updated there.
 # The version in git should reflect the *next* version planned.
-# Version must be MAJOR.MINOR.PATCH otherwise things will break.
 #
-AC_INIT([libzre],[1.0.1],[zeromq-dev@lists.zeromq.org])
+AC_INIT([libzre],[m4_esyscmd([./version.sh zre])],[zeromq-dev@lists.zeromq.org])
 
 AC_CONFIG_AUX_DIR(config)
 AC_CONFIG_MACRO_DIR(config)

version.sh

@@ -0,0 +1,21 @@
+#!/bin/sh
+#
+# This script extracts the version from the project header file
+#
+project=$1
+if [ ! -f include/$project.h ]; then
+    echo "version.sh: error: include/$project.h does not exist" 1>&2
+    exit 1
+fi
+MAJOR=`egrep '^#define .*_VERSION_MAJOR +[0-9]+$' include/$project.h`
+MINOR=`egrep '^#define .*_VERSION_MINOR +[0-9]+$' include/$project.h`
+PATCH=`egrep '^#define .*_VERSION_PATCH +[0-9]+$' include/$project.h`
+if [ -z "$MAJOR" -o -z "$MINOR" -o -z "$PATCH" ]; then
+    echo "version.sh: error: could not extract version from include/$project.h" 1>&2
+    exit 1
+fi
+MAJOR=`echo $MAJOR | awk '{ print $3 }'`
+MINOR=`echo $MINOR | awk '{ print $3 }'`
+PATCH=`echo $PATCH | awk '{ print $3 }'`
+echo $MAJOR.$MINOR.$PATCH | tr -d '\n'
+