checking whether byte ordering is bigendian... cross-compiling... unknown checking to probe for byte ordering... /usr/local/powerpc-eabi/bin/ld: warning: cannot find entry symbol _start; defaulting to 01800074
Looking at libiberty configure, I see it first tries to get the byte-endian info from sys/params.h, then it tries a link test. The link test won't work for a cross compiler here, so you have to have sys/params.h before building, which means you need a usable C library before starting the target library builds. But you need a compiler before you can build newlib.
You could try doing the build in stages, e.g. build gcc only without the target libraries, then build newlib, then build the target libraries. Dan Kegel's crosstool scripts do something like this with glibc for linux targets.
Or you can do a combined tree build which will work for embedded targets and is simpler, i.e. put newlib inside the gcc source tree, as a sister directory to libiberty and libstdc++. This is what most of us developers do. In this case, newlib will be auto-detected and built after gcc and before libstdc++, and used when configuring the target libiberty.
You can also put other stuff in the combined tree, like binutils and gdb, but if you aren't using the head of the CVS trees, you may need to resolve conflicts. See for instance
http://gcc.gnu.org/simtest-howto.html
--
Jim Wilson, GNU Tools Support, http://www.SpecifixInc.com
