TeXmacs-1.99.2-i386-pc-linux-gnu-B.tar.gz from http://www.texmacs.org/tmweb/download/unix.en.html
using last stable works on SL7. Note that the web site states "The binary distributions might not work on certain systems with old versions of Linux (from before 2009, approximatively)" . SL7 is more current than that. One still must follow the INSTALL instructions after the tar.gz is unpacked.
Yasha Karant
