Compile Error in Timer Blink LED Program

Hello Freinds,

I am running a simple program for timer blink led, on MSP430F5438 Board in windows 7 , CCS6

#include <msp430g2231.h>


#define LED_0 BIT0 
#define LED_1 BIT6
#define LED_OUT P1OUT
#define LED_DIR P1DIR



unsigned int timerCount = 0;
void main(void)
{
WDTCTL = WDTPW + WDTHOLD; // Stop watchdog timer
LED_DIR |= (LED_0 + LED_1); // Set P1.0 and P1.6 to output direction
LED_OUT &= ~(LED_0 + LED_1); // Set the LEDs off

CCTL0 = CCIE;
TACTL = TASSEL_2 + MC_2; // Set the timer A to SMCLCK, Continuous
// Clear the timer and enable timer interrupt

__enable_interrupt();

__bis_SR_register(LPM0 + GIE); // LPM0 with interrupts enabled

} 


// Timer A0 interrupt service routine
#pragma vector=TIMERA0_VECTOR
__interrupt void Timer_A (void)
{
timerCount = (timerCount + 1) % 8;
if(timerCount ==0)
P1OUT ^= (LED_0 + LED_1);
}

I am getting error message : 

**** Build of configuration Debug for project blinkinLEDPressButton ****

"C:\\ti\\ccsv6\\utils\\bin\\gmake" -k all
'Building file: ../main.c'
'Invoking: MSP430 Compiler'
"C:/ti/ccsv6/tools/compiler/ti-cgt-msp430_4.4.3/bin/cl430" -vmspx --abi=eabi --data_model=restricted --use_hw_mpy=F5 --include_path="C:/ti/ccsv6/ccs_base/msp430/include" --include_path="C:/ti/ccsv6/tools/compiler/ti-cgt-msp430_4.4.3/include" --advice:power=all -g --define=__MSP430F5438__ --diag_warning=225 --display_error_number --diag_wrap=off --silicon_errata=CPU15 --silicon_errata=CPU18 --silicon_errata=CPU21 --silicon_errata=CPU22 --silicon_errata=CPU23 --silicon_errata=CPU40 --printf_support=minimal --preproc_with_compile --preproc_dependency="main.pp" "../main.c"
"../main.c", line 54: remark #1530-D: (ULP 5.1) Detected modulo operation(s). Recommend moving them to RAM during run time or not using as these are processing/power intensive
"C:\Users\Nitish\AppData\Local\Temp\0118410", WARNING! at line 141: [W0005] NOP required before set of GIE bit.
BIS.W r15,SR

No Assembly Errors, 1 Assembly Warning
'Finished building: ../main.c'
' '
'Building target: blinkinLEDPressButton.out'
'Invoking: MSP430 Linker'
"C:/ti/ccsv6/tools/compiler/ti-cgt-msp430_4.4.3/bin/cl430" -vmspx --abi=eabi --data_model=restricted --use_hw_mpy=F5 --advice:power=all -g --define=__MSP430F5438__ --diag_warning=225 --display_error_number --diag_wrap=off --silicon_errata=CPU15 --silicon_errata=CPU18 --silicon_errata=CPU21 --silicon_errata=CPU22 --silicon_errata=CPU23 --silicon_errata=CPU40 --printf_support=minimal -z -m"blinkinLEDPressButton.map" --heap_size=160 --stack_size=160 --cinit_hold_wdt=on -i"C:/ti/ccsv6/ccs_base/msp430/include" -i"C:/ti/ccsv6/tools/compiler/ti-cgt-msp430_4.4.3/lib" -i"C:/ti/ccsv6/tools/compiler/ti-cgt-msp430_4.4.3/include" -i"C:/ti/ccsv6/ccs_base/msp430/lib/5xx_6xx_FRxx" --reread_libs --warn_sections --display_error_number --diag_wrap=off --xml_link_info="blinkinLEDPressButton_linkInfo.xml" --use_hw_mpy=F5 --rom_model -o "blinkinLEDPressButton.out" "./main.obj" "../lnk_msp430f5438.cmd" -l"libmath.a" -l"libc.a"
<Linking>
remark #10372-D: (ULP 4.1) Detected uninitialized Port 2 in this project. Recommend initializing all unused ports to eliminate wasted current consumption on unused pins.

undefined first referenced
symbol in file
--------- ----------------
P1DIR ./main.obj
P1OUT ./main.obj
TACCTL0 ./main.obj
TACTL ./main.obj

error #10234-D: unresolved symbols remain
error #10010: errors encountered during linking; "blinkinLEDPressButton.out" not built

>> Compilation failure
gmake: *** [blinkinLEDPressButton.out] Error 1
gmake: Target `all' not remade because of errors.

**** Build Finished ****

Can somebody help me please to figure out this, as i am new in this field.

Thanks