Elixirを使うためにanyenv経由でOSXにexenvをインストールした ref: http://qiita.com/y-temp4/items/41e5c9422ebffc7e909e

file0.sh

$ anyenv install erlenv
$ exec $SHELL -l
$ brew install unixodbc wxmac fop
$ wget http://www.erlang.org/download/otp_src_19.1.tar.gz
$ tar zxf otp_src_19.1.tar.gz
$ cd otp_src_19.1
$ ./configure --prefix=$HOME/.anyenv/envs/erlenv/releases/19.1 --enable-dynamic-ssl-lib --with-ssl=/usr/local/opt/openssl
$ make -j 4
$ make install
$ erlenv global 19.1
$ erlenv rehash
$ exec $SHELL -l
$ cd ..
$ rm -rf otp_src_19.1 otp_src_19.1.tar.gz

file1.sh

$ erl
Erlang/OTP 19 [erts-8.1] [source] [64-bit] [smp:4:4] [async-threads:10] [hipe] [kernel-poll:false]

Eshell V8.1  (abort with ^G)
1> crypto:start().
ok
2>

file2.sh

$ erl
Erlang/OTP 19 [erts-8.1] [source] [64-bit] [smp:4:4] [async-threads:10] [hipe] [kernel-poll:false]

Eshell V8.1  (abort with ^G)
1> crypto:start().
** exception error: undefined function crypto:start/0
2>

file3.sh

$ anyenv install exenv
$ exenv install 1.3.4
$ exenv global 1.3.4
$ exec $SHELL -l

file4.sh

$ elixir -v
Erlang/OTP 19 [erts-8.1] [source] [64-bit] [smp:4:4] [async-threads:10] [hipe] [kernel-poll:false]

Elixir 1.3.4