tomatoware
Tomatoware is a development environment for mipsel embedded routers. It gives you the ability to compile applications natively on your mipsel device.
Downloads for the project can be found on the github project releases page. https://github.com/lancethepants/tomatoware/releases
Downloads for the project can also be found at http://lancethepants.com/files
Compiling
Tomatoware has the ability to be compiled for different root prefixes. This allows you to mount it to /mmc, /jffs, or any other available prefix. This allows tomatoware to co-exist with entware/optware which reside in /opt.
Edit config.mk to set the desired prefix and then run make. It will compile the toolchain if it is not already installed, and then will compile tomatoware. It must create a new toolchain for each unique prefix used.
I'm compiling this on a Debian 7 system. I've also sucessfully built Tomatoware on Ubuntu 14.04. The following packages should be sufficient to compile Tomatoware.
sudo apt-get -y install autoconf automake automake1.9 bash binutils bison build-essential bzip2 cvs diffutils doxygen dpkg-dev file flex g++ g++-4.4 gawk gcc gcc-multilib gettext git-core gperf groff-base intltool libbz2-dev libc6-dev libcurl4-openssl-dev libgc-dev libglib2.0-dev libslang2 libtool make patch perl pkg-config python python-all python-dev python2.7-dev lib32z1 lib32z-dev libc6 libexpat1-dev libffi-dev libgdbm-dev libncurses-dev libreadline6-dev libssl-dev libsqlite3-dev libstdc++6-4.4-dev libxml-parser-perl m4 sed shtool sqlite subversion tar texinfo tk-dev zlib1g zlib1g-dev unzip libxml2-dev