ext-tool.mk isn't copying libssp.so from the toolchain to the target. When I build a system using an external crostool-ng/uClibc toolchain, ssh won't work because libssp.so is missing from the target: # ssh ssh: can't load library 'libssp.so.0' In the past, to get a working system, I've had to tweak ext-tool.mk to copy some additional libraries (including libssp) from the toolchain to the target. It's probably time to actually try to get ext-tool.mk fixed instead of continuing to tweak it locally. :)
The external toolchain logic makes the assumption that the SSP support is provided by the C library (and therefore part of the usual libc), and not provided by the compiler (in which case it is a separate libssp.so). If you have examples of toolchains for which SSP support is provided by a compiler library, please let us know so we can improve the external toolchain support. In the mean time, due the age of the bug, I'm closing it.