Error trying to install odoo error: command 'x86_64-linux-gnu-gcc'

I have no idea what I'm doing wrong when following the instructions here:

http://odoo-development.readthedocs.org/en/latest/install.html. Can you please help me out?

The command that causes the error is:

$ sudo pip install -r requirements.txt

Here is the error:

error: command 'x86_64-linux-gnu-gcc' failed with exit status 1

Can't roll back Pillow; was not uninstalled Cleaning up... Command /usr/bin/python -c "import setuptools, tokenize;file='/tmp/pip-build-rlHphv/Pillow/setup.py';exec(compile(getattr(tokenize, 'open', open)(file).read().replace('\r\n', '\n'), file, 'exec'))" install --record /tmp/pip-B4QpIV-record/install-record.txt --single-version-externally-managed --compile failed with error code 1 in /tmp/pip-build-rlHphv/Pillow Storing debug log for failure in /home/aaa/.pip/pip.log

Here are the commands I'm entering in order:

-VirtualBox:~$ sudo apt-get update
-VirtualBox:~$ sudo apt-get install git python-pip htop moreutils tree nginx gimp wmctrl postgresql-server-dev-all
-VirtualBox:~$ sudo apt-get upgrade
-VirtualBox:~$ mkdir bmp
-VirtualBox:~$ cd bmp
-VirtualBox:~/bmp$ sudo git clone https://github.com/odoo/odoo.git
-VirtualBox:~/bmp$ ls
-VirtualBox:~/bmp$ cd odoo
-VirtualBox:~/bmp/odoo$ ls
-VirtualBox:~/bmp/odoo$ cd .
-VirtualBox:~/bmp/odoo$ cd ..
-VirtualBox:~/bmp$ wget http://nightly.odoo.com/8.0/nightly/deb/odoo_8.0.latest_all.deb
-VirtualBox:~/bmp$ sudo dpkg -i odoo_8.0.latest_all.deb
-VirtualBox:~/bmp$ sudo apt-get -f install
-VirtualBox:~/bmp$ sudo apt-get remove odoo
-VirtualBox:~/bmp$ ls
-VirtualBox:~/bmp$ cd /usr/local/src
-VirtualBox:/usr/local/src$ lsb_release -a
-VirtualBox:/usr/local/src$ uname -i
-VirtualBox:/usr/local/src$ sudo apt-get install xfonts-base xfonts-75dpi
-VirtualBox:/usr/local/src$ sudo apt-get -f install
-VirtualBox:/usr/local/src$ wget http://download.gna.org/wkhtmltopdf/0.12/0.12.2.1/wkhtmltox-0.12.2.1_linux-trusty-amd64.deb
-VirtualBox:/usr/local/src$ sudo wget http://download.gna.org/wkhtmltopdf/0.12/0.12.2.1/wkhtmltox-0.12.2.1_linux-trusty-amd64.deb
-VirtualBox:/usr/local/src$ sudo dpkg -i wkhtmltox-*.deb
-VirtualBox:/usr/local/src$ cd ~/bmp/odoo
-VirtualBox:~/bmp/odoo$ sudo pip install -r requirements.txt

I have posted all the logs here: http://pastebin.com/xbbAkPzy. At this point any help would be very much appreciated.