I find it strange that the dependencies are not on the app's page. Perhaps they will be listed in the files INSTALL or README. I'm not so sure about how to figure out what dependencies a source package needs without them being listed somewhere. (Appart from actually looking in the source
But I know how to find out what dependecies are missing for a binary file; just use ldd.
For example, lets find out what 'ls' depends on.
librt.so.1 => /lib/librt.so.1 (0x40026000)
libc.so.6 => /lib/libc.so.6 (0x40038000)
libpthread.so.0 => /lib/libpthread.so.0 (0x4015b000)
/lib/ld-linux.so.2 => /lib/ld-linux.so.2 (0x40000000)
Very handy indeed!
PS, remeber, ldd is your friend