need help with shell / configure

[Matúš Kukan]

Hi,

With ./configure --build=x86_64-unknown-linux-gnu
--host=arm-unknown-linux-gnueabihf I get:
    ...
    checking which languages to be built... en-US
    checking for alternative branding images directory... ./configure:
35560: ./configure.lineno: Syntax error: "(" unexpected
configure: error: Running configure script for BUILD system failed,
see CONF-FOR-BUILD/config.log

I can avoid this by commenting brand_vars and brand_files variables in
configure but no idea what is wrong.
It happens in configure for build platform running inside configure
for host platform.
Is it possible to re-write that part of configure ?
What could be wrong ?

Thanks,
Matus