Atmel Studio 6 Linker Error : collect2: ld [solved]

Projects Programming
1

I sucessfully built and tested the sample Blink example to blink LED on my Mega2560 board and LCD example to display stuff on my LCD1602. Then I added some more code that uses LCD and EEPROM libraries. However, I am getting the following linker error:

Building target: TimeWarp.elf
		Invoking: AVR8/GNU Linker : (AVR_8_bit_GNU_Toolchain_3.4.0_663) 4.6.2
		"C:\Program Files (x86)\Atmel\Atmel Studio 6.0\extensions\Atmel\AVRGCC\3.4.0.65\AVRToolchain\bin\avr-g++.exe" -o TimeWarp.elf  Declarations.o merlin_mount.o MsTimer2.o TimerOne.o TimeWarp.o TW_Camera.o TW_EEPROM.o TW_IO.o TW_Merlin.o TW_Motor.o TW_UI.o TW_UI_Screen.o TW_UI_Values.o   -Wl,-Map="TimeWarp.map" -Wl,--start-group -Wl,-lm -Wl,-lcore  -Wl,--end-group -Wl,-L"C:\Users\Komal\Documents\Atmel Studio\ArduinoCore" -Wl,-L"C:\Users\Komal\Documents\Atmel Studio\ArduinoLibraries\LiquidCrystal" -Wl,-L"C:\Users\Komal\Documents\Atmel Studio\ArduinoLibraries\EEPROM"  "C:\Users\Komal\Documents\Atmel Studio\ArduinoCore\LiquidCrystal.o" -Wl,"C:\Users\Komal\Documents\Atmel Studio\ArduinoCore\EEPROM.o" -Wl  -mmcu=atmega2560  
		c:/program files (x86)/atmel/atmel studio 6.0/extensions/atmel/avrgcc/3.4.0.65/avrtoolchain/bin/../lib/gcc/avr/4.6.2/../../../../avr/lib/avr6\libm.a(unordsf2.o):/home/tools/hudson/workspace/avr8-gnu-toolchain/src/avr-libc/libm/fplib/unordsf2.S:42:(.text.avr-libc.fplib+0x0): relocation truncated to fit: R_AVR_13_PCREL against symbol `__fp_cmp' defined in .text.avr-libc.fplib section in c:/program files (x86)/atmel/atmel studio 6.0/extensions/atmel/avrgcc/3.4.0.65/avrtoolchain/bin/../lib/gcc/avr/4.6.2/../../../../avr/lib/avr6\libm.a(fp_cmp.o)
		collect2: ld returned 1 exit status
		make: *** [TimeWarp.elf] Error 1
	Done executing task "RunCompilerTask" -- FAILED.

I looked around a lot for a solution to this problem, but no success. Can anyone please point me in the right direction?

Thanks

2

Does the code compile and link in the IDE?

3

PaulS:
Does the code compile and link in the IDE?

Well, all I have is a bunch of cpp and h files. I don't know how to convert the to Arduino IDE format. The main file that has setup() and loop() is in a cpp file. Should I just copy paste that into a pde file and then just place the other classes in the same directory and somehow add them to the project?

4

Solved! Just flipped the order of libm and libcore in the linker settings and it worked. Here is the Link to the avr forum that helped.

5

this the corrected link
http://www.avrfreaks.net/comment/874542#comment-874542