I've built 1.6 and this depends on libc.so.0 and libdl.so.0. These are the same filenames found within the toolchain directory. I'm not sure but I think uClibc uses the "0" versions while the other versions are current for glibc. Did you accidentally build it using your native toolchain somehow? I do know that the makefiles are horribly broken in some aspects (and I plan to fix them) but it should at least be using the right toolchain.

Thanks for the tip. To make sure, I checked that PATH didn't contain another toolchain, ran "make clean", followed by "make ; make image", and then ran "readelf -d ./build_ip04/root/bin/asterisk":

libc.so.0
libdl.so.0
libgcc_s.so.1
libpthread.so.0
libncurses.so.5
libm.so.0
libresolv.so.0
libtonezone.so.2.0
libsqlite3.so.0
libspeexdsp.so.1
libspandsp.so.2
libtiff.so.3

I checked what ./lib and ./usr/lib contain, and they are indeed available. Maybe it was because PATH contained pointers to the uClinux 2010 toolchain.

BTW, I'm compiling for the IP04 but using an IP01 because the Switchfin patches don't work when compiling for the IP01. I don't know if that means anything.

I'm going out for dinner, and I'll run Asterisk again to see if this solves the "can't resolve symbol '_fork'" issue.