Error including date types in 1.1.0

[Jose Pedro Tavares]

I'm using cc++ 1.1.0 and it was all going allright until I tried to use 
Date types (Date, Datetime and Time). I've used Threads, Strings, 
Sockets and everything was good. I think it is a linking problem since 
it finds <cc++/numbers.h> or a compatibility problem with STLport, the 
error is:

/usr/include/stlport/stl/_ios_base.h:198: undefined reference to 
`ost::Datetime::Datetime[in-charge]()'

I use the following compiler flags:
-lstlport_gcc -lccgnu2
Is libccext needed for this? When I add -lccext2 to the compiler flags 
the following error appears:
-lstlport_gcc -lccext2 -lccgnu2 -o bin/sim_test
/usr/lib/gcc-lib/i686-pc-linux-gnu/3.3.3/../../../libccext2.so: 
undefined reference to `deflate'
/usr/lib/gcc-lib/i686-pc-linux-gnu/3.3.3/../../../libccext2.so: 
undefined reference to `xmlCreatePushParserCtxt'
/usr/lib/gcc-lib/i686-pc-linux-gnu/3.3.3/../../../libccext2.so: 
undefined reference to `inflate'
/usr/lib/gcc-lib/i686-pc-linux-gnu/3.3.3/../../../libccext2.so: 
undefined reference to `xmlParseChunk'
/usr/lib/gcc-lib/i686-pc-linux-gnu/3.3.3/../../../libccext2.so: 
undefined reference to `inflateInit_'
/usr/lib/gcc-lib/i686-pc-linux-gnu/3.3.3/../../../libccext2.so: 
undefined reference to `deflateInit_'
/usr/lib/gcc-lib/i686-pc-linux-gnu/3.3.3/../../../libccext2.so: 
undefined reference to `xmlFreeParserCtxt'
/usr/lib/gcc-lib/i686-pc-linux-gnu/3.3.3/../../../libccext2.so: 
undefined reference to `inflateEnd'
/usr/lib/gcc-lib/i686-pc-linux-gnu/3.3.3/../../../libccext2.so: 
undefined reference to `deflateEnd'
collect2: ld returned 1 exit status

TIA
Zé Pedro

PS: Sorry for my bad english...