[racket] Slackware 13.1 compilation

I downloaded sources for Racket 5.0.1, as I would like to build it for 
Slackware.

After unpacking and moving to the src directory, I type
./configure
and then
make
A lot of compilation goes on, but it bails out with:

./../../wxcommon/wxJPEG.cxx:967: warning: 'png_struct_def::jmpbuf' is deprecated 
(declared at /usr/include/libpng14/png.h:1093)
make[5]: *** [wxJPEG.o] Error 1
make[5]: Leaving directory `/home/mcarter/plt-5.0.1/src/gracket/gc2'
make[4]: *** [3m] Error 2
make[4]: Leaving directory `/home/mcarter/plt-5.0.1/src/gracket/gc2'
make[3]: *** [3m] Error 2
make[3]: Leaving directory `/home/mcarter/plt-5.0.1/src/gracket'
make[2]: *** [gracket-3m] Error 2
make[2]: Leaving directory `/home/mcarter/plt-5.0.1/src'
make[1]: *** [3m] Error 2
make[1]: Leaving directory `/home/mcarter/plt-5.0.1/src'
make: *** [all] Error 2
bash-4.1$ 

Any ideas?