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Undefined symbol

I can not compile a very simple PWM program on Keil
The same program is compiled on Energia
The message that I get is below:
For your information main.c is in the source file and I use C not C++.

µVision Build Log

Project:

C:\Keil\MyPojects\PortF\Led.uvproj
Project File Date: 04/24/2018

Output:

Build target 'PWithM'
assembling startup_TM4C123.s...
compiling main.c...
linking...
.\LedMain.axf: Error: L6218E: Undefined symbol GPIOPinConfigure (referred from main.o).
.\LedMain.axf: Error: L6218E: Undefined symbol GPIOPinTypePWM (referred from main.o).
.\LedMain.axf: Error: L6218E: Undefined symbol PWMGenConfigure (referred from main.o).
.\LedMain.axf: Error: L6218E: Undefined symbol PWMGenEnable (referred from main.o).
.\LedMain.axf: Error: L6218E: Undefined symbol PWMGenPeriodSet (referred from main.o).
.\LedMain.axf: Error: L6218E: Undefined symbol PWMOutputState (referred from main.o).
.\LedMain.axf: Error: L6218E: Undefined symbol PWMPulseWidthSet (referred from main.o).
.\LedMain.axf: Error: L6218E: Undefined symbol SysCtlDelay (referred from main.o).
.\LedMain.axf: Error: L6218E: Undefined symbol SysCtlPWMClockSet (referred from main.o).
.\LedMain.axf: Error: L6218E: Undefined symbol SysCtlPeripheralEnable (referred from main.o).
Not enough information to list image symbols.
Finished: 1 information, 0 warning and 10 error messages.
".\LedMain.axf" - 10 Error(s), 0 Warning(s).
Target not created

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