# Eclipse Compiling error with AVR

#### The Night Whisper

##### New Member
Dear All
I'v used Eclipse to create a simple AVr application for ATMEGA8A, but after compiling the code i got an errors which is generated with any avr application coded by the Eclipse,so pls help to solve these errors
my code is

Code:
#include <avr/io.h>
int main()
{
DDRC |= 1<<PC0;
while(1)
{
PORTC0 ^= 1<<PC0;
}
}
and the errors are
make: *** [LedOnOff.o] Error 1
recipe for target 'LedOnOff.o' failed

and the details for the auto generated make file ,which contain the errors belong to subdir.mk file

################################################################################
# Automatically-generated file. Do not edit!
################################################################################
# Add inputs and outputs from these tool invocations to the build variables
C_SRCS += \
../LedOnOff.c
OBJS += \
./LedOnOff.o
C_DEPS += \
./LedOnOff.d
# Each subdirectory must supply rules for building sources it contributes
%.o: ../%.c
echo 'Building file: $<' "the error is here" echo 'Invoking: AVR Compiler' avr-gcc -Wall -Os -fpack-struct -fshort-enums -ffunction-sections -fdata-sections -std=gnu99 -funsigned-char -funsigned-bitfields -mmcu=atmega8a -DF_CPU=16000000UL -MMD -MP -MF"$(@:%.o=%.d)" -MT"$(@)" -c -o "$@" "$<" echo 'Finished building:$<'
echo ' '

and the toolchain configuration as below

AVR-GCC C:\Program Files (x86)\Atmel\Studio\7.0\toolchain\avr8\avr8-gnu-toolchain\bin
GNU Make C:\Program Files (x86)\Atmel\Studio\7.0\shellutils
AVR Header Files C:\Program Files (x86)\Atmel\Studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include
AVRDude C:\Program Files (x86)\Arduino\hardware\tools\avr\bin

many thanks

#### Pommie

##### Well-Known Member
I'm guessing your file is called LedOnOff.c and I would suspect that the compiler can't find it.

Mike.

#### wkrug

##### Active Member
I see some possible errors there.

First is You have to create a project with Your IDE.
There was normally a project file created, without Your knowlegde.
The name and the ending depends of Your IDE.
In a section of this project file is the startfile declared ( normally main.c ).
This is the startpoint of compiling.
Additional i would write the shift options into brackets.
You wrote
DDRC |= 1<<PC0;
I'll suggest
DDRC |=( 1<<PC0);

AVR GCC want to have a void here
int main(void)

When all having done this, it should compile and work.

#### The Night Whisper

##### New Member
I see some possible errors there.

First is You have to create a project with Your IDE.
There was normally a project file created, without Your knowlegde.
The name and the ending depends of Your IDE.
In a section of this project file is the startfile declared ( normally main.c ).
This is the startpoint of compiling.
Additional i would write the shift options into brackets.
You wrote
DDRC |= 1<<PC0;
I'll suggest
DDRC |=( 1<<PC0);

AVR GCC want to have a void here
int main(void)

When all having done this, it should compile and work.
sorry, I've did all the recommended instructions , but I've got the same error

#### wkrug

##### Active Member
I've tried Your code in ATMEL Studio 7, and it works after debugging?!

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#### Ian Rogers

##### User Extraordinaire
Forum Supporter
Why do you need to use eclipse? I thought Atmel studio is bundled with an IDE... Eclipse is complicated.. I tried it with the android platform and gave up!! Some IDE's do not like multiple file compilation... If I were you I would just use Atmel Studio...

#### The Night Whisper

##### New Member
Why do you need to use eclipse? I thought Atmel studio is bundled with an IDE... Eclipse is complicated.. I tried it with the android platform and gave up!! Some IDE's do not like multiple file compilation... If I were you I would just use Atmel Studio...

also thanks to wkrug

#### Ian Rogers

##### User Extraordinaire
Forum Supporter
As a side note.. Do you use Proteus?? If you do it ships with VSM .. This is one of the best programming IDE's I have... It see's EVERY compiler I own and will compile link and assemble all of them..

I also use Textpad 8 but this needs a payment!!

#### The Night Whisper

##### New Member
Hi lan
I'm newbie to proteus and did use for avr programming before,if you have any tutorials about it i will apperciate

#### Ian Rogers

##### User Extraordinaire
Forum Supporter
I use pics predominately. But the process is the same... Start a new project in Proteus, select the Avr processor then the compiler.. t will start you off with a small skeletal program..

#### wkrug

##### Active Member
I don't know the Proteus IDE, but the standard IDE for ATMEL controllers is STUDIO x.x.
Version STUDIO 6 was overloaded with features.
STUDIO 7 is much smaller and works very good.
The syntax is like AVR GCC so You can find much support in the Internet.

An easy way to start is with CodeVision AVR.
For small projects the evaluation Software is free ( max 2k of code ).
A few features are not availible in the free version.
The most convinient feature is the Automatic Programm Generator ( APG ).
The full Version costs near 200\$ including 1 Year support.
I guess that is to expensive for an hobbyist.
The syntax is a little different from AVR GCC.