------ Rebuild All started: Project: GccApplication1, Configuration: Debug AVR ------ Build started. Project "GccApplication1.cproj" (Clean target(s)): Target "Clean" in file "C:\Program Files (x86)\Atmel\Studio\7.0\Vs\Compiler.targets" from project "C:\Users\Armin\Documents\Atmel Studio\7.0\GccApplication1\GccApplication1\GccApplication1.cproj" (entry point): Task "RunCompilerTask" Shell Utils Path C:\Program Files (x86)\Atmel\Studio\7.0\shellUtils C:\Program Files (x86)\Atmel\Studio\7.0\shellUtils\make.exe clean rm -rf main.o rm -rf main.d rm -rf "GccApplication1.elf" "GccApplication1.a" "GccApplication1.hex" "GccApplication1.lss" "GccApplication1.eep" "GccApplication1.map" "GccApplication1.srec" "GccApplication1.usersignatures" Done executing task "RunCompilerTask". Done building target "Clean" in project "GccApplication1.cproj". Done building project "GccApplication1.cproj". Build succeeded. ------ Rebuild All started: Project: GccApplication1, Configuration: Debug AVR ------ Build started. Project "GccApplication1.cproj" (default targets): Target "PreBuildEvent" skipped, due to false condition; ('$(PreBuildEvent)'!='') was evaluated as (''!=''). Target "CoreBuild" in file "C:\Program Files (x86)\Atmel\Studio\7.0\Vs\Compiler.targets" from project "C:\Users\Armin\Documents\Atmel Studio\7.0\GccApplication1\GccApplication1\GccApplication1.cproj" (target "Build" depends on it): Task "RunCompilerTask" Shell Utils Path C:\Program Files (x86)\Atmel\Studio\7.0\shellUtils C:\Program Files (x86)\Atmel\Studio\7.0\shellUtils\make.exe all --jobs 4 --output-sync Building file: .././main.c Invoking: AVR/GNU C Compiler : 4.9.2 "C:\Program Files (x86)\Atmel\Studio\7.0\toolchain\avr8\avr8-gnu-toolchain\bin\avr-gcc.exe" -x c -funsigned-char -funsigned-bitfields -DDEBUG -I"C:\Program Files (x86)\Atmel\Studio\7.0\Packs\atmel\ATmega_DFP\1.0.106\include" -I"C:\Users\Armin\Documents\Atmel Studio\7.0\GccApplication1\GccApplication1\HFiles" -O1 -ffunction-sections -fdata-sections -fpack-struct -fshort-enums -g2 -Wall -mmcu=atmega8 -B "C:\Program Files (x86)\Atmel\Studio\7.0\Packs\atmel\ATmega_DFP\1.0.106\gcc\dev\atmega8" -c -std=gnu99 -MD -MP -MF "main.d" -MT"main.d" -MT"main.o" -o "main.o" ".././main.c" Finished building: .././main.c Building target: GccApplication1.elf Invoking: AVR/GNU Linker : 4.9.2 "C:\Program Files (x86)\Atmel\Studio\7.0\toolchain\avr8\avr8-gnu-toolchain\bin\avr-gcc.exe" -o GccApplication1.elf main.o -Wl,-Map="GccApplication1.map" -Wl,--start-group -Wl,-lasuro -Wl,--end-group -Wl,-L"C:\ZumSichern_15072016\AT-MEGA8\ASURO_15072016\AsuroLib-master\AsuroLib-master\lib" -Wl,--gc-sections -mmcu=atmega8 -B "C:\Program Files (x86)\Atmel\Studio\7.0\Packs\atmel\ATmega_DFP\1.0.106\gcc\dev\atmega8" C:\ZumSichern_15072016\AT-MEGA8\ASURO_15072016\AsuroLib-master\AsuroLib-master\lib\libasuro.a(adc_low.o): In function `ReadADC': C:\ProgramData\AsuroFlash\asuro-lib\lib\adc_low.c(42,1): error: undefined reference to `adcValue' C:\ProgramData\AsuroFlash\asuro-lib\lib\adc_low.c(42,1): error: undefined reference to `adcValue' main.o: In function `main': C:\Users\Armin\Documents\Atmel Studio\7.0\GccApplication1\GccApplication1\main.c(12,1): error: undefined reference to `Init' collect2.exe(0,0): error: ld returned 1 exit status make: *** [GccApplication1.elf] Error 1 C:\Users\Armin\Documents\Atmel Studio\7.0\GccApplication1\GccApplication1\Makefile(110,1): error: recipe for target 'GccApplication1.elf' failed The command exited with code 2. Done executing task "RunCompilerTask" -- FAILED. Done building target "CoreBuild" in project "GccApplication1.cproj" -- FAILED. Done building project "GccApplication1.cproj" -- FAILED. Build FAILED. ========== Rebuild All: 0 succeeded, 1 failed, 0 skipped ==========