Atmel Studio : Build Failed

Hi we’re having problems with a build, here’s our output…
Thanks for your support !
(We manually changed the path of 3pi.h)

------ Build started: Project: 3pi-linefollower, Configuration: Debug AVR ------
Build started.
Project “3pi-linefollower.cproj” (default targets):
Target “PreBuildEvent” skipped, due to false condition; (’$(PreBuildEvent)’!=’’) was evaluated as (’’!=’’).
Target “CoreBuild” in file “C:\atmel studio 7\7.0\Vs\Compiler.targets” from project “C:\libpololu-avr\examples\atmega328p\3pi-linefollower\3pi-linefollower.cproj” (target “Build” depends on it):
Task “RunCompilerTask"
Shell Utils Path C:\atmel studio 7\7.0\shellUtils
C:\atmel studio 7\7.0\shellUtils\make.exe all --jobs 4 --output-sync
Building file: …/./test.c
Invoking: AVR/GNU C Compiler : 5.4.0
"C:\atmel studio 7\7.0\toolchain\avr8\avr8-gnu-toolchain\bin\avr-gcc.exe” -x c -funsigned-char -funsigned-bitfields -I"C:\atmel studio 7\7.0\Packs\atmel\ATmega_DFP\1.2.150\include" -Os -ffunction-sections -fdata-sections -fpack-struct -fshort-enums -g2 -Wall -mmcu=atmega328p -B “C:\atmel studio 7\7.0\Packs\atmel\ATmega_DFP\1.2.150\gcc\dev\atmega328p” -c -std=gnu99 -MD -MP -MF “test.d” -MT"test.d" -MT"test.o" -o “test.o” “…/./test.c"
Finished building: …/./test.c
Building target: 3pi-linefollower.elf
Invoking: AVR/GNU Linker : 5.4.0
"C:\atmel studio 7\7.0\toolchain\avr8\avr8-gnu-toolchain\bin\avr-gcc.exe” -o 3pi-linefollower.elf test.o -Wl,-Map=“” -Wl,–start-group -Wl,-lpololu_atmega328p -Wl,-lm -Wl,–end-group -Wl,–gc-sections -mmcu=atmega328p -B "C:\atmel studio 7\7.0\Packs\atmel\ATmega_DFP\1.2.150\gcc\dev\atmega328p"
C:\libpololu-avr\examples\atmega328p\3pi-linefollower\Debug\Makefile(108,1): error: recipe for target ‘3pi-linefollower.elf’ failed
cannot find -lpololu_atmega328pcollect2.exe(0,0): error: ld returned 1 exit status
make: *** [3pi-linefollower.elf] Error 1
The command exited with code 2.
Done executing task “RunCompilerTask” – FAILED.
Done building target “CoreBuild” in project “3pi-linefollower.cproj” – FAILED.
Done building project “3pi-linefollower.cproj” – FAILED.

========== Build: 0 succeeded or up-to-date, 1 failed, 0 skipped ==========

Hello, G.R. .

Did you install the AVR C/C++ Library after installing Atmel Studio 7? Have you tried following the instructions in the “Manual Installation” section of the Pololu AVR C/C++ Library User’s Guide?

- Amanda