checking for autoconf >= 2.59...
  testing autoconf... found 2.62
checking for autoconf >= 2.59...
  testing autoheader... found 2.62
checking for automake >= 1.9.6...
  testing automake... found 1.10.1
checking for libtool >= 1.5.22...
  testing libtoolize... found 2.2.4
Generates autoconf/automake files.
Running `libtoolize --force --copy --automake --ltdl'
Running `aclocal -I autotools'
Running `autoheader'
Running `automake --add-missing --copy'
Running `autoconf'
DONE.

Please copy mkinstalldirs script into ./libltdl/ directory.
You can find it in automake's data directory. Usually, it's in:
/usr/share/automake-1.10.1/
configure.ac:120: installing `autotools/config.guess'
configure.ac:120: installing `autotools/config.sub'
configure.ac:353: installing `autotools/install-sh'
configure.ac:353: installing `autotools/missing'
extensions/curl_xml_http_request/Makefile.am: installing `autotools/depcomp'