crash on jdk14 install on FBSD 5.3

[follet at free.fr]

Hi,
I'm trying to install jdk14 on my FBSD 5.3.
One error about linuxprocfs occure :
# cd /usr/ports/java/jdk14
# make all install clean
<snip>
======================================================================
Warning: This JDK may be unstable. You are advised to use the native
FreeBSD JDK, in ports/java/jdk14.

This Java VM will attempt to obtain some system information by
accessing files in linux's procfs.  You must install the Linux
emulation procfs filesystem for this to work correctly.  The JVM
will exhibit various problems otherwise.  This can be accomplished
by adding the following line to your /etc/fstab file:

 linprocfs   /compat/linux/proc   linprocfs   rw   0  0

and then, as root, executing the commands:

kldload linprocfs
mount /compat/linux/proc

======================================================================
===>  Vulnerability check disabled, database not found
===>  Extracting for linux-sun-jdk-1.4.2.06
>> No checksum recorded for j2sdk-1_4_2_06-linux-i586.bin.
*** Error code 1

Stop in /usr/ports/java/linux-sun-jdk14.
*** Error code 1

Stop in /usr/ports/java/jdk14.


but before intallation i checked it :

$ df -h
Filesystem     Size    Used   Avail Capacity  Mounted on
/dev/ad0s2a    989M     55M    855M     6%    /
devfs          1.0K    1.0K      0B   100%    /dev
/dev/ad0s2e    989M     46K    910M     0%    /tmp
/dev/ad0s2f     19G    2.6G     15G    15%    /usr
/dev/ad0s2d    989M     28M    882M     3%    /var
linprocfs      4.0K    4.0K      0B   100%    /usr/compat/linux/proc
$ kldstat
Id Refs Address    Size     Name
 1    7 0xc0400000 4e2d80   kernel
 2   14 0xc08e3000 537f0    acpi.ko
 3    1 0xc1c84000 6000     linprocfs.ko
$ ll /usr/ports/distfiles/
total 105404
drwxr-xr-x   3 root    wheel   -     1024 Jan 10 10:48 ./
drwxr-xr-x  66 root    wheel   -     1536 Jan  8 20:49 ../
-rw-r--r--   1 follet  follet  -  1068798 Jan 10 10:33
bsd-jdk14-patches-6.tar.gz
-rw-r--r--   1 follet  follet  -  2513462 Jan 10 10:41 j2sdk-1_4_2-bin-scsl.zip
-rw-r--r--   1 follet  follet  - 49269919 Jan 10 10:47 j2sdk-1_4_2-src-scsl.zip
-rw-r--r--   1 follet  follet  - 36417364 Jan  9 18:18
j2sdk-1_4_2_06-linux-i586.bin

What's wrong ?
Thx for your help :)