Problem with compile

[Jackie Gleason]

I am trying to compile the following code

Environment: Ubuntu 11.04 x64

int main(void)

{

  NSString* s = @"Hello, world!";

  NSLog(s);

  //printf("%s\n", [Test classStringValue]);

  return 0;

}

I install and Compile GNUstep by checking out the anonymous core, then compiling in the order make, base, gui, back. I compile all of them using the following command (under sudo shell)..

./configure --prefix=/usr/GnuStep

make

make install

After make I run the following...

. /usr/GnuStep/share/GNUstep/Makefiles/GNUstep.sh

Finally I create the following GNUMakeFile...

include $(GNUSTEP_MAKEFILES)/common.make

TOOL_NAME = LogTest

LogTest_OBJC_FILES = source.m

include $(GNUSTEP_MAKEFILES)/tool.make

But when I try running I get the following message...

~/Development/Code/personal/GnuStep/helloWorld$ make

This is gnustep-make 2.6.1. Type 'make print-gnustep-make-help' for help.

Making all for tool LogTest...

 Compiling file source.m ...

source.m: In function ‘main’:

source.m:36:3: error: cannot find interface declaration for ‘NXConstantString’

make[3]: *** [obj/LogTest.obj/source.m.o] Error 1

make[2]: *** [internal-tool-all_] Error 2

make[1]: *** [LogTest.all.tool.variables] Error 2

make: *** [internal-all] Error 2

the ls for the folder is...

:/usr/GnuStep# ls 

bin  share

Any help would be very appreciated.