Error in installation

Hi,
I downloaded the source today. When i try to compile in on my pc (Ubuntu 9.04, 64bit), Error was coming up. And the compiling was stopped. What’s wrong with that?

stone@stone-desktop:~/software/mothur$ make
g++ -O3 -DUSE_READLINE sharedutilities.cpp -c -I. -o ./sharedutilities.o
In file included from sharedutilities.h:12,
from sharedutilities.cpp:10:
mothur.h:57:33: error: readline/readline.h: No such file or directory
mothur.h:58:32: error: readline/history.h: No such file or directory
In file included from sharedutilities.h:12,
from sharedutilities.cpp:10:
mothur.h: In function ‘int renameFile(std::string, std::string)’:
mothur.h:635: warning: ignoring return value of ‘int system(const char*)’, declared with attribute warn_unused_result
mothur.h:639: warning: ignoring return value of ‘int system(const char*)’, declared with attribute warn_unused_result
mothur.h: In function ‘std::string sortFile(std::string)’:
mothur.h:989: warning: ignoring return value of ‘int system(const char*)’, declared with attribute warn_unused_result
make: *** [sharedutilities.o] Error 1

sudo apt-get install readline
apt-get install libreadline-dev

Robin

Thank you very much!
It works now.
Stone