Error messages when compiling the code for RTC

[bistnasr]

Dear Sir/Madame:
I am interested in buying the Real Time Clock PCB from your site, however, I want to confirm that the code is compiling. I downloaded the Arduino software and when I compiled the code provided in your tutorial I got the following error messages. Can you please help me to fix the problem?

C:\Documents and Settings\Nasr\My Documents\Downloads\arduino-1.0.3-windows\arduino-1.0.3/sketch_mar08a.ino:22: undefined reference to `RTC_DS1307::now()'
C:\Documents and Settings\Nasr\My Documents\Downloads\arduino-1.0.3-windows\arduino-1.0.3/sketch_mar08a.ino:38: undefined reference to `DateTime::unixtime() const'
C:\Documents and Settings\Nasr\My Documents\Downloads\arduino-1.0.3-windows\arduino-1.0.3/sketch_mar08a.ino:40: undefined reference to `DateTime::unixtime() const'
C:\Documents and Settings\Nasr\My Documents\Downloads\arduino-1.0.3-windows\arduino-1.0.3/sketch_mar08a.ino:44: undefined reference to `DateTime::unixtime() const'
C:\Documents and Settings\Nasr\My Documents\Downloads\arduino-1.0.3-windows\arduino-1.0.3/sketch_mar08a.ino:44: undefined reference to `DateTime::DateTime(unsigned long)'
sketch_mar08a.cpp.o: In function `setup':
C:\Documents and Settings\Nasr\My Documents\Downloads\arduino-1.0.3-windows\arduino-1.0.3/sketch_mar08a.ino:11: undefined reference to `RTC_DS1307::begin()'
C:\Documents and Settings\Nasr\My Documents\Downloads\arduino-1.0.3-windows\arduino-1.0.3/sketch_mar08a.ino:13: undefined reference to `RTC_DS1307::isrunning()'


I will wait for your advice and thanks for your help.
Nasr
P. Eng.

[adafruit_support_rick]

Looks like you didn't download and install the RTC library.
If you did download the library, then it is not installed correctly. See our Libraries Tutorial for detailed instructions!