[openbeos] Building on Linux

I'm having some trouble building the Haiku build tools on Linux.  I've
checked out the buildtools from subversion, and followed the instructions in
INSTALL-as-cross-compiler-on-LINUX up until make cross:

make[1]: Entering directory
`/home/drew/haiku/buildtools/gcc-obj/build-x86_64-unknown-linux-gnu/libiberty'
make[2]: Entering directory
`/home/drew/haiku/buildtools/gcc-obj/build-x86_64-unknown-linux-gnu/libiberty/testsuite'
make[2]: Nothing to be done for `all'.
make[2]: Leaving directory
`/home/drew/haiku/buildtools/gcc-obj/build-x86_64-unknown-linux-gnu/libiberty/testsuite'
make[1]: Leaving directory
`/home/drew/haiku/buildtools/gcc-obj/build-x86_64-unknown-linux-gnu/libiberty'
make[1]: Entering directory
`/home/drew/haiku/buildtools/gcc-obj/build-x86_64-unknown-linux-gnu/fixincludes'
make[1]: Nothing to be done for `all'.
make[1]: Leaving directory
`/home/drew/haiku/buildtools/gcc-obj/build-x86_64-unknown-linux-gnu/fixincludes'
make[1]: Entering directory `/home/drew/haiku/buildtools/gcc-obj/libiberty'
make[2]: Entering directory
`/home/drew/haiku/buildtools/gcc-obj/libiberty/testsuite'
make[2]: Nothing to be done for `all'.
make[2]: Leaving directory
`/home/drew/haiku/buildtools/gcc-obj/libiberty/testsuite'
make[1]: Leaving directory `/home/drew/haiku/buildtools/gcc-obj/libiberty'
make[1]: Entering directory `/home/drew/haiku/buildtools/gcc-obj/intl'
make[1]: Nothing to be done for `all'.
make[1]: Leaving directory `/home/drew/haiku/buildtools/gcc-obj/intl'
Building the C and C++ compiler
/bin/sh: line 0: cd: gcc: No such file or directory
make: *** [cross] Error 1

I've tried this on a regular i686 with the same result.

Can anyone give me some pointers where to go?  Is this a bug in the
buildtools?

Thanks

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