Add autogen.sh script

autogen.sh

@@ -0,0 +1,37 @@
+#!/bin/sh
+
+set -ex
+rm -rf autom4te.cache Makefile.in aclocal.m4
+aclocal --force
+
+# GNU libtool is named differently on some systems.  This code tries several
+# variants like glibtoolize (MacOSX) and libtoolize1x (FreeBSD)
+
+set +ex
+echo "Looking for a version of libtoolize (which can have different names)..."
+libtoolize=""
+for l in glibtoolize libtoolize15 libtoolize14 libtoolize ; do
+    $l --version > /dev/null 2>&1
+    if [ $? = 0 ]; then
+        libtoolize=$l
+        echo "Found $l" 
+        break
+    fi
+    echo "Did not find $l" 
+done
+
+if [ "x$libtoolize" == "x" ]; then
+    echo "Can't find libtoolize on your system"
+    exit 1
+fi
+
+set -ex
+$libtoolize -c -f
+autoconf -f -W all,no-obsolete
+autoheader -f -W all
+automake -a -c -f -W all
+
+rm -rf autom4te.cache
+exit 0
+
+# end autogen.sh