build-couchdb + CouchDB 1.2.x

gistfile1.txt

git checkout 1.2.x
Switched to a new branch '1.2.x'
Branch 1.2.x set up to track remote branch 1.2.x from origin.
git reset --hard
HEAD is now at 7f9376c fix COUCHDB-1361 - unquoted port in js config test
git clean -f -d
git ls-files --others -i --exclude-standard | xargs rm || true
rm: missing operand
Try `rm --help' for more information.
mkdir -p ~/Downloads/build-couchdb/build/var/run/couchdb
./bootstrap
configure.ac:176: error: possibly undefined macro: AS_CASE
      If this token and others are legitimate, please use m4_pattern_allow.
      See the Autoconf documentation.
git checkout HEAD src/couchdb/priv/couch_js/utf8.h
git ls-files --others --ignored --exclude-standard | xargs rm -vf
removed `Makefile.in'
removed `acinclude.m4'
removed `aclocal.m4'
removed `bin/Makefile.in'
removed `config.h.in'
removed `configure'
removed `etc/Makefile.in'
removed `etc/couchdb/Makefile.in'
removed `etc/default/Makefile.in'
removed `etc/init/Makefile.in'
removed `etc/launchd/Makefile.in'
removed `etc/logrotate.d/Makefile.in'
removed `etc/windows/Makefile.in'
removed `m4/ac_check_curl.m4'
removed `m4/ac_check_icu.m4'
removed `m4/pkg.m4'
removed `share/Makefile.in'
removed `src/Makefile.in'
removed `src/couchdb/Makefile.in'
removed `src/couchdb/priv/Makefile.in'
removed `src/ejson/Makefile.in'
removed `src/erlang-oauth/Makefile.in'
removed `src/etap/Makefile.in'
removed `src/ibrowse/Makefile.in'
removed `src/mochiweb/Makefile.in'
removed `src/snappy/Makefile.in'
removed `test/Makefile.in'
removed `test/bench/Makefile.in'
removed `test/etap/Makefile.in'
removed `test/javascript/Makefile.in'
removed `test/view_server/Makefile.in'
removed `utils/Makefile.in'
removed `var/Makefile.in'
rake aborted!
Command failed with status (1): [./bootstrap...]