search for: speex_xxxxx_int

...compile-time, I'd think that an #ifdef would do the trick. The only way you could do it at RUNTIME is if you perform a dlopen() on the speex library instead having it shared-linked, since the runtime ld.so will fail to run your binary if it's linked against an old speex library without the speex_XXXXX_int() symbols. You'd open the .so file with RTLD_LAZY mode. Of course, you'll need to figure out where the speex library is within your program. You'll be linking against libdl rather than libspeex, and performing a dlopen() and dlsym() for the various entry points. You could always wa...

Assuming one prefers to use the speex_encode_int() and speex_decode_int() when available, but fallback to speex_encode() and speex_decode() if an older version if the lib is installed, how does one best make the determination? The only thing I can see to do is call speex_init_header() and look at the result. Even at compile time it seems one must compile a test app that outputs that data and then