There has already been a question on where to find the source code for pdfTeX. The answer is that it can be found on CTAN, in the systems directory. Unfortunately, the source code for XeTeX is not ...
I'm trying like to build xelatex from xetex source on Linux. Source link: http://scripts.sil.org/svn-view/xetex/TAGS/xetex-0.996.tar.gz With the source I was able to build xetex executable. ...