for those about to compile, we salute you

If in lack of inspiration, you tried to compile the ADS1.2 mcp project that
failed, I propose to use Keil better and newer µVision compiler instead.
The free evalutaion lets you compile <256K code.

The problem arises if you try to compile that (dead) ADS1.2 project's file
:
 this is because the init.s is not conform with µVision. 

The solution is here :

http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.faqs/ka3556....

Hope that helps.

DL