That looks like the same problem as with the libm library that shows up when you add "-lm" to the tccmake command line. It will need a similar fix. I did not try it yet, but I added a possible fix to the tcc install script (see the new red line below). Try it and report your results here.
Code:
#!/bin/sh
cd /usr/lib
mntroot rw >/dev/null
ln -s /mnt/us/tcc/crt1.o
ln -s /mnt/us/tcc/crti.o
ln -s /mnt/us/tcc/crtn.o
cd /usr/bin >/dev/null
ln -s /mnt/us/tcc/tcc
ln -s /mnt/us/tcc/tccmake
[[ -e libm.so ]]||ln -s /lib/libm.so.6 libm.so
[[ -e libpthread.so ]]||ln -s /lib/libpthread.so.0 libpthread.so
mntroot ro >/dev/null
echo "*** tcc installed ***"
echo Uninstall with /mnt/us/tcc/uninstall
echo Compile demo.c with "tccmake demo"