linux_base on 5.3-AMD64 error: ELF binary type "0" not known

[Enrique F. Céspedes Sánchez]

Hi,
     when make install in /usr/ports/emulators/linux_base
with FreeBSD 5.3-AMD64 obtain:
.....

===>  Installing for linux_base-7.1_7
===>   Generating temporary packing list
===>  Checking if emulators/linux_base already installed
kern.fallback_elf_brand: 3 -> 3
glibc-common-2.2.4-33.i386.rpm
glibc-2.2.4-33.i386.rpm
ELF binary type "0" not known.
execution of glibc-2.2.4-33 script failed, exit status 255
*** Error code 1


My kernel conf file has:
options 	LINPROCFS
options 	COMPAT_43
options 	COMPAT_LINUX32


Sysctl says:
beethoven#  sysctl -a | grep elf
kern.elf64.fallback_brand: 3
kern.fallback_elf_brand: 3
kern.elf32.fallback_brand: -1
debug.elf64_legacy_coredump: 0
debug.elf64_trace: 0
debug.elf32_legacy_coredump: 0
debug.elf32_trace: 0

Where is the problem?
thanks,
Enrique Fco. Céspedes