the LCD module from SVN doesn't compile, probably because the #include in module_manager.cc is wrong:
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The issue is really outdated instructions in INSTALL. If you run the commands indicated in the section "Compiling your SVN copy the first time" of http://gpsim.sourceforge.net/gpsim_svn.html in the root SVN directory, change to extras/lcd and type make, it should build properly. I will fix the INSTALL file and remove the outdated config stuff.
Extras modules will now build and install with make, "make install" from gpsim base directory for linux.