Michael ABBOTT reported that Ubuntu had problems running menuconfig.
Turned out that a POSIX script shell was in fact not POSIX: == does not check for equality, -eq does.

/trunk/kconfig/lxdialog/check-lxdialog.sh | 4 2 2 0 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

# x86 specific options

config ARCH_x86

    select ARCH_SUPPORT_ARCH

    select ARCH_SUPPORT_CPU

    select ARCH_SUPPORT_TUNE

    help

      The x86 architecture, as defined by:

        http://www.intel.com/