Error while running linker am using TIVA C TM4C123G and IAR
for solving first problem, You should:
1. add library files (library.a for IAR) to your project. In Project window -> add group(or files) -> driverlib.a in Driverlib/ewarm folder. (Sorry, I'm using Keil or Eclipse but sure these acts looks same in different IDE)
2. in main.c include driverlib/sysctl.h instead of sysctl.c
Don't understand second issue, can you add your code?