Initial Compilation Error

When selfupdating I get this compilation error:

cc -dynamiclib -L/usr/local/lib  -L/usr/lib -lcurl -lssl -lcrypto -lz  
darwinports.o portconf.o session.o util.o -o Darwinports.dylib -L/ 
System/Library/Frameworks/Tcl.framework/Versions/8.4 -ltclstub8.4 -L/ 
usr/local/lib  -L/usr/lib -lcurl -lssl -lcrypto -lz -lreadline  -lcrypto
/usr/bin/libtool: can't locate file for: -ltclstub8.4
/usr/bin/libtool: file: -ltclstub8.4 is not an object file (not  
allowed in a library)
/usr/bin/libtool: for architecture: cputype (16777234) cpusubtype (0)  
file: -lSystem is not an object file (not allowed in a library)
make[2]: *** [Darwinports.dylib] Error 1
make[1]: *** [all] Error 1
make: *** [all] Error 1
DEBUG: Error installing new DarwinPorts base: shell command "cd /opt/ 
local/var/db/dports/sources/rsync.rsync.darwinports.org_dpupdate1/ 
base && ./configure --prefix=/opt/local --with-install-user=root -- 
with-install-group=admin --with-tclpackage=/Library/Tcl && make &&  
make install" returned error 2

I don't know whether this is relevant, but I also get a number of the  
same warning:

	In file included from util.c:37:
	util.h:2:3: warning: style of line directive is a GCC extension
	util.h:44:3: warning: style of line directive is a GCC extension
	util.c:39:3: warning: style of line directive is a GCC extension

I'm running Mac OS X 10.4.7(8J135) with Darwin kernel version 8.7.0.   
Compiling with gcc 3.1.

I get the same kind of errors when compiling the jpeg libraries.

It seems as if the compiler is just mistaking an option for a  
filename, but I'm not sure if this is part of a more general  
problem.  Should I perhaps update gcc? Any help is appreciated. Cheers.