I downloaded buildroot.gz from http://www.uclibc.org/cgi-bin/cvsweb/buildroot
by clicking "Download tarball".
This is the process of creating a uClibc toolchain.

# make

...
linux-2.4.27/Documentation/parisc/registers
linux-2.4.27/Documentation/parisc/00-INDEX
linux-2.4.27/Documentation/parisc/IODC.txt
linux-2.4.27/Documentation/parisc/debugging
linux-2.4.27/Documentation/cris/
linux-2.4.27/Documentation/cris/README
linux-2.4.27/Documentation/SAK.txt
linux-2.4.27/Documentation/mips/
linux-2.4.27/Documentation/mips/time.README
linux-2.4.27/Documentation/mips/GT64120.README
linux-2.4.27/Documentation/mips/pci/
linux-2.4.27/Documentation/mips/pci/pci.README
linux-2.4.27/Documentation/power/
linux-2.4.27/Documentation/power/pci.txt
# Rename the dir from the downloaded version to the AFTER patch version
mv -f /home/tcma/src/buildroot/build_i386/linux-2.4.27 /home/tcma/src/buildroot/build_i386/linux-2.4.27-tcma
mv: cannot overwrite directory `/home/tcma/src/buildroot/build_i386/linux-2.4.27-tcma/linux-2.4.27'
make: *** [/home/tcma/src/buildroot/build_i386/linux-2.4.27-tcma/.unpacked] Error 1



Linux version 2.6.8-gentoo-r4 (root@rose) (gcc version 3.3.4 20040623 (Gentoo Linux 3.3.4-r1, ssp-3.3.2-2, pie-8.7.6)) #3

Had you already tried to do this once before you got the error? Because it doesn't seem right to me that that directory should exist.

Here's something relevant, if that's the case: from the man page for mv (gnu fileutils-4.0)

- If the last argument names an existing directory, mv moves each other given file into a file
- with the same name in that directory. Otherwise, if only two files are given, it renames the
- first as the second. It is an error if the last argument is not a directory and more than
- two files are given.

- Thus, `mv /a/x/y /b' will rename the file /a/x/y into /b/y if /b was an existing directory,
- and into /b otherwise.


in other words, when you do this:

- mv -f /home/tcma/src/buildroot/build_i386/linux-2.4.27 /home/tcma/src/buildroot/build_i386/linux-2.4.27-tcma

you're actually trying to copy the first directory --into-- the second rather than over it, as would happen with a file.

The simplest fix for this is to remove the offending existing directory (/home/tcma/src/buildroot/build_i386/linux-2.4.27-tcma) provided you don't need it there for some reason? As it seems to be breaking your Makefile.

Good luck,

Stephen