mozilla firefox 1.0.6 building bug

[Vitaliy Biliyenko]

uname -a
 FreeBSD spider 5.4-RELEASE FreeBSD 5.4-RELEASE #0: Mon Aug 22
16:14:53 EEST 2005
 root at spider:/usr/obj/usr/src/sys/CUSTOM3  i386


timestamps
 $FreeBSD: ports/www/firefox/Makefile,v 1.129 2005/09/02 05:00:03 marcus Exp $
 $MCom: ports-stable/www/firefox/Makefile,v 1.18 2005/08/20 21:53:54 mezz Exp $


I have a problem building the latest Firefox 1.0.6. Exactly the same I
get when trying to build Thunderbird 1.0.6. For some time I had
Firefox 1.0.4 and Thunderbird 1.0.2 installed and working perfectly.
So, this is what I get during the build
 
...
 c++ -o nsDNSService2.o -c -DOSTYPE=\"FreeBSD5\" -DOSARCH=\"FreeBSD\" 
-I../../../dist/include/xpcom -I../../../dist/include/string
-I../../../dist/include/pref -I../../../dist/include/unicharutil
-I../../../dist/include/necko -I../../../dist/include
-I/usr/local/include/nspr -I/usr/local/include -I/usr/local/include 
-I/usr/X11R6/include   -fPIC  -I/usr/X11R6/include
-I/usr/local/include  -I/usr/X11R6/include  -I/usr/X11R6/include
-fno-rtti -fno-exceptions -Wall -Wconversion -Wpointer-arith
-Wcast-align -Woverloaded-virtual -Wsynth -Wno-ctor-dtor-privacy
-Wno-non-virtual-dtor -Wno-long-long -O -pipe -fshort-wchar -pipe 
-DNDEBUG -DTRIMMED -O  -I/usr/X11R6/include -I/usr/local/include 
-I/usr/X11R6/include  -I/usr/X11R6/include -DMOZILLA_CLIENT -include
../../../mozilla-config.h nsDNSService2.cpp
In file included from nsDNSService2.h:40,
                 from nsDNSService2.cpp:38:
nsHostResolver.h:95: error: ISO C++ forbids declaration of
`PRAddrInfo' with no type
nsHostResolver.h:95: error: expected `;' before '*' token
nsHostResolver.h: In member function `PRBool nsHostRecord::HasResult() const':
nsHostResolver.h:99: error: `addr_info' undeclared (first use this function)
nsHostResolver.h:99: error: (Each undeclared identifier is reported
only once for each function it appears in.)
nsHostResolver.h: At global scope:
nsHostResolver.h:209: error: `PRAddrInfo' has not been declared
nsHostResolver.h:209: error: ISO C++ forbids declaration of
`parameter' with no type
nsDNSService2.cpp: In member function `virtual nsresult
nsDNSRecord::GetCanonicalName(nsACString&)':
nsDNSService2.cpp:95: error: 'class nsDerivedSafe<nsHostRecord>' has
no member named 'addr_info'
nsDNSService2.cpp:96: error: 'class nsDerivedSafe<nsHostRecord>' has
no member named 'addr_info'
nsDNSService2.cpp:96: error: `PR_GetCanonNameFromAddrInfo' undeclared
(first use this function)
nsDNSService2.cpp: In member function `virtual nsresult
nsDNSRecord::GetNextAddr(PRUint16, PRNetAddr*)':
nsDNSService2.cpp:112: error: 'class nsDerivedSafe<nsHostRecord>' has
no member named 'addr_info'
nsDNSService2.cpp:113: error: 'class nsDerivedSafe<nsHostRecord>' has
no member named 'addr_info'
nsDNSService2.cpp:113: error: `PR_EnumerateAddrInfo' undeclared (first
use this function)
nsDNSService2.cpp: In member function `PRUint16
nsDNSService::GetAFForLookup(const nsACString&)':
nsDNSService2.cpp:528: error: `PR_AF_UNSPEC' undeclared (first use
this function)
gmake[4]: *** [nsDNSService2.o] Error 1
gmake[4]: Leaving directory
`/usr/ports/www/firefox/work/mozilla/netwerk/dns/src'
gmake[3]: *** [libs] Error 2
gmake[3]: Leaving directory `/usr/ports/www/firefox/work/mozilla/netwerk/dns'
gmake[2]: *** [libs] Error 2
gmake[2]: Leaving directory `/usr/ports/www/firefox/work/mozilla/netwerk'
gmake[1]: *** [tier_9] Error 2
gmake[1]: Leaving directory `/usr/ports/www/firefox/work/mozilla'
gmake: *** [default] Error 2
*** Error code 2

Stop in /usr/ports/www/firefox.

I get this every time I try to build it.
I would be very thankful for every advice