Just to check which versions do you have:

[shell]
$ autoconf -V
autoconf (GNU Autoconf) 2.68
$ automake –version
automake (GNU automake) 1.11.1
$ m4 –version
GNU M4 1.4.6
$ libtool -V
Apple Computer, Inc. version cctools-782
[/shell]

Prepare “wrapper dir”
[shell]
sudo mkdir /usr/local/upgraded
[/shell]

Open & edit file “/etc/paths” and add “/usr/local/upgraded/bin” as a first line, so then your /etc/paths should look like

[shell]
$ cat /etc/paths
/usr/local/upgraded/bin
/usr/bin
/bin
/usr/sbin
/sbin
/usr/local/bin
[/shell]

And now at first, upgrade M4:
[shell]
$ cd /tmp
$ curl -O http://mirrors.kernel.org/gnu/m4/m4-latest.tar.gz
$ tar -zxvf m4-*
$ cd m4-*
$ ./configure –-prefix=/usr/local/upgraded
$ make
$ sudo make install
$ cd ..
[/shell]

and for autoconf:
[shell]
$ curl -O http://mirrors.kernel.org/gnu/autoconf/autoconf-latest.tar.gz
$ tar -zxvf autoconf-*
$ cd autoconf-*
$ ./configure –-prefix=/usr/local/upgraded
$ make
$ sudo make install
$ cd ..
[/shell]

next for automake:
[shell]
$ curl -O http://mirrors.kernel.org/gnu/automake/automake-1.11.tar.gz
$ tar -zxvf automake-*
$ cd automake-*
$ ./configure –-prefix=/usr/local/upgraded
$ make
$ sudo make install
$ cd ..
[/shell]

and for libtool:
[shell]
$ curl -O http://mirrors.kernel.org/gnu/libtool/libtool-2.4.tar.gz
$ tar -zxvf libtool-*
$ cd libtool-*
$ ./configure –-prefix=/usr/local/upgraded
$ make
$ sudo make install
$ cd ..
[/shell]

then you could check versions again…

PS: If you’re not using vim or other console editor (capable of sudo), try this
[shell]
$ cp /etc/paths ~/Desktop/
— here open file "paths" from Desktop with you favourite text editor, edit and save —
$ sudo cp ~/Desktop/paths /etc
[/shell]