nilfs-utils: add autogen script

Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>

README

@@ -40,10 +40,10 @@ option is not necessary.
  $ cd your-work-directory
  $ git clone git://github.com/nilfs-dev/nilfs-utils.git
 
-Before compiling the development sources, you need to run
-autoconf/automake tools.  This is not required for packaged sources
-unless you changed the configuration.
+Before compiling the development sources, you need to run autogen.sh
+script.  This is not required for packaged sources unless you changed
+the configuration.
  
  $ cd nilfs-utils
- $ aclocal && autoheader && libtoolize -c --force && automake -a -c && autoconf
+ $ ./autogen.sh
 

autogen.sh

@@ -0,0 +1,26 @@
+#!/bin/sh
+#
+# Run this before configure
+#
+
+die() {
+    echo
+    echo "Error: $*"
+    exit 1
+}
+
+aclocal || die "aclocal failed"
+
+autoheader || die "autoheader failed" 
+
+libtoolize -c --force || die "libtoolize failed"
+
+automake -a -c || die "automake failed"
+
+echo
+echo "Creating configure..."
+
+autoconf || die "autoconf failed"
+
+echo
+echo "Now run './configure' and 'make' to compile nilfs-utils."