Setting up Eclipse to Develop Firmware

fma

Interesting how the prior error was "command not found", but then this error is "No such file or directory."

This is a common mistake, due to poor error messages: in the first case, this is sh which can't find gcc, in the second case, this is gcc which can't find a file. sh reports which file it can't find (gcc, here), but gcc does not report the missing file…

I suspect a library path not setup correctly, so gcc can't find a .o to build something else.

dc42

Here is the link command I get:

arm-none-eabi-gcc -L"C:\Eclipse\Firmware\CoreNG\SAM4E8E" -Os -Wl,–gc-sections -Wl,--fatal-warnings -mcpu=cortex-m4 -mfpu=fpv4-sp-d16 -mfloat-abi=hard -TC:\Eclipse\Firmware\CoreNG\variants\duetNG\linker_scripts\gcc\flash.ld -Wl,-Map,C:\Eclipse\Firmware\RepRapFirmware\DuetWiFi/DuetWiFiFirmware.map -o "DuetWiFiFirmware.elf" -mthumb -Wl,--cref -Wl,--check-sections -Wl,--gc-sections -Wl,--entry=Reset_Handler -Wl,--unresolved-symbols=report-all -Wl,--warn-common -Wl,--warn-section-align -Wl,--warn-unresolved-symbols -Wl,--start-group "C:\Eclipse\Firmware\CoreNG\SAM4E8E\cores\arduino\syscalls.o" ./src/Tools/Filament.o ./src/Tools/Tool.o ./src/Storage/CRC32.o ./src/Storage/FileStore.o ./src/Storage/MassStorage.o ./src/Movement/Kinematics/CartesianKinematics.o ./src/Movement/Kinematics/CoreBaseKinematics.o ./src/Movement/Kinematics/CoreXYKinematics.o ./src/Movement/Kinematics/CoreXYUKinematics.o ./src/Movement/Kinematics/CoreXZKinematics.o ./src/Movement/Kinematics/Kinematics.o ./src/Movement/Kinematics/LinearDeltaKinematics.o ./src/Movement/Kinematics/PolarKinematics.o ./src/Movement/Kinematics/ScaraKinematics.o ./src/Movement/Kinematics/ZLeadscrewKinematics.o ./src/Movement/BedProbing/Grid.o ./src/Movement/BedProbing/RandomProbePointSet.o ./src/Movement/DDA.o ./src/Movement/DriveMovement.o ./src/Movement/Move.o ./src/Libraries/sha1/sha1.o ./src/Libraries/Math/Isqrt.o ./src/Libraries/General/IP4String.o ./src/Libraries/General/StringRef.o ./src/Libraries/Fatfs/ccsbcs.o ./src/Libraries/Fatfs/diskio.o ./src/Libraries/Fatfs/fattime_rtc.o ./src/Libraries/Fatfs/ff.o ./src/Heating/Sensors/CpuTemperatureSensor.o ./src/Heating/Sensors/CurrentLoopTemperatureSensor.o ./src/Heating/Sensors/DhtSensor.o ./src/Heating/Sensors/RtdSensor31865.o ./src/Heating/Sensors/SpiTemperatureSensor.o ./src/Heating/Sensors/TemperatureSensor.o ./src/Heating/Sensors/Thermistor.o ./src/Heating/Sensors/ThermocoupleSensor31855.o ./src/Heating/Sensors/ThermocoupleSensor31856.o ./src/Heating/Sensors/TmcDriverTemperatureSensor.o ./src/Heating/FOPDT.o ./src/Heating/Heat.o ./src/Heating/Pid.o ./src/Heating/TemperatureError.o ./src/GCodes/GCodeBuffer.o ./src/GCodes/GCodeInput.o ./src/GCodes/GCodeMachineState.o ./src/GCodes/GCodeQueue.o ./src/GCodes/GCodes.o ./src/GCodes/GCodes2.o ./src/GCodes/RestorePoint.o ./src/FilamentSensors/Duet3DFilamentSensor.o ./src/FilamentSensors/FilamentSensor.o ./src/FilamentSensors/SimpleFilamentSensor.o ./src/DuetNG/DuetWiFi/Network.o ./src/DuetNG/DuetWiFi/Socket.o ./src/DuetNG/DuetWiFi/WifiFirmwareUploader.o ./src/DuetNG/DueXn.o ./src/DuetNG/FirmwareUpdater.o ./src/DuetNG/FtpResponder.o ./src/DuetNG/HttpResponder.o ./src/DuetNG/NetworkBuffer.o ./src/DuetNG/NetworkResponder.o ./src/DuetNG/SX1509.o ./src/DuetNG/TMC2660.o ./src/DuetNG/TelnetResponder.o ./src/Fan.o ./src/IoPort.o ./src/Logger.o ./src/OutputMemory.o ./src/Platform.o ./src/PortControl.o ./src/PrintMonitor.o ./src/RepRap.o ./src/RepRapFirmware.o ./src/Roland.o ./src/Scanner.o ./src/SoftTimer.o ./src/ZProbeProgrammer.o -lCoreNG -Wl,--end-group -lm -gcc

So the file it's missing on your machine is, on my machine, "C:\Eclipse\Firmware\CoreNG\SAM4E8E\cores\arduino\syscalls.o". That should come from this "Command line pattern" setting in the Cross G++ Linker settings:

${COMMAND} ${FLAGS} ${OUTPUT_FLAG} ${OUTPUT_PREFIX}${OUTPUT} ${LINK_FLAGS_1} "${workspace_loc:/${CoreName}/SAM4E8E/cores/arduino/syscalls.o}" ${INPUTS} ${LINK_FLAGS_2}

I've noticed before that if Eclipse can't find a file, it just omits it from the command line. If you built the SAM4E configuration of CoreNG before you built RRF, that file should be there.

HTH David

jml

Ok we are getting closer to a solution.

I found the missing file here:
/Users/John/eclipse-workspace/CoreNG/SAM4E8E/cores/arduino/syscalls.o
[it appears there with a bunch of other files after building CoreNG]

In the RRF Cross G++ Linker "Command line pattern" box, I see this written:
${COMMAND} ${FLAGS} ${OUTPUT_FLAG} ${OUTPUT_PREFIX}${OUTPUT} ${LINK_FLAGS_1} "${workspace_loc:/${CoreName}/SAM4E8E/cores/arduino/syscalls.o}" ${INPUTS} ${LINK_FLAGS_2}

Its the same as yours, so seems like its not a problem.

Maybe the problem is with how I build CoreNG and RRF:

First I right click CoreNG, Build Configurations > Clean All.
Repeat for RepRapFirmware folder
Right click CoreNG, Build Configurations > Build Selected… then I select SAM4E8E and hit ok.
Wait for build to finish (8 seconds)
Repeat for RepRapFirmware folder, but select DuetWiFi and hit ok.
Error

Should I build it differently?

dc42

That's the correct build order.

In Properties -> C/C++ Build -> Build Variables, do you have CoreName defined as CoreNG ?

jml

For the RepRapFirmware folder, yes it is there. Name: CoreName || Type: String || Value: CoreNG

For the CoreNG folder, nothing is listed in the list. Should it be there?

jml

I really just need to make some small firmware changes and some custom g-code commands.

I purchased the DuetWifi, PanelDue, and am waiting for the Duex5. Hoping to have it solved by the time it arrives! If I can't get it to work on Mac or Windows, I may just uninstall everything and try again when firmware version 1.2 is out.

Thanks for all the help you've provided so far!

fma

I had no problem installing/compiling under linux. You may try to install a linux system in a Virtualbox env, and compile from there.

jml

Ok, I will try. I'm using a decently powered Mac using Parallels to run windows and I assume I can put Linux on here too. Which Linux OS/distribution do you recommend? Ubuntu? I have limited experience with Linux, but I can learn!

jml

So strange though. It seems like the only thing I need to fix is these empty quotation marks and it will fix everything:
-Wl,–start-group ""

The file it is looking for is 100% in the right folder. And the command line pattern is exactly how dc42's is.

fma

I run debian, but I think ubuntu is fine too (all dev libs exist).

About the missing path, you can try to replace:

${CoreName}

by

CoreNG

or ${workspace_loc:/${CoreName}

by

/Users/John/eclipse-workspace/CoreNG

to see if it fixes the problem.

jml

LOL, I literally just tried it before reading your post AND IT WORKED!!!!!!

Just in case someone in the future has this problem, this is what I changed:

${COMMAND} ${FLAGS} ${OUTPUT_FLAG} ${OUTPUT_PREFIX}${OUTPUT} ${LINK_FLAGS_1} "${workspace_loc:/${CoreName}/SAM4E8E/cores/arduino/syscalls.o}" ${INPUTS} ${LINK_FLAGS_2}

changed it to:
${COMMAND} ${FLAGS} ${OUTPUT_FLAG} ${OUTPUT_PREFIX}${OUTPUT} ${LINK_FLAGS_1} "/Users/John/eclipse-workspace/CoreNG/SAM4E8E/cores/arduino/syscalls.o" ${INPUTS} ${LINK_FLAGS_2}

(make sure the quotes are there but the curly brackets and dollar signs removed).

Thanks everyone!

jml

I'm so happy

fma

Good!

But I think I found the issue. The string:

"${workspace_loc:/${CoreName}/SAM4E8E/cores/arduino/syscalls.o}"

should be :

"${workspace_loc}:/${CoreName}/SAM4E8E/cores/arduino/syscalls.o}"

There where a missing bracket at the end of the workspace_loc var…

Can you confirm?

jml

When I browse around in the settings, the way that all of the Includes are is like this:
"${workspace_loc:/${CoreName}/asf/common/utils}"

So I don't think that was the issue.

jml

Eg. when you write it like this:
"${workspace_loc}:/${CoreName}/SAM4E8E/cores/arduino/syscalls.o}"

you have an extra curly bracket because there is one on the far right 2nd last to the end.

fma

Mmm, you're right, they are all defined this way… Strange.

vsch

If it is of any help, I was getting the exact same error because I made the mistake of having the projects not under the workspace directory.

When I created the workspace in the parent directory of the project sources (CoreNG and RepRapFirmware directories) the error went away as expected. The ${workspace_loc:} is expecting them to be under the workspace directory.

However, I am getting undefined reference errors during linking for: lprintf, sqrtf, floorf, etc.

I am running under OS X with gcc-arm-none-eabi-6-2017-q2-update tools. Is there a library missing from the linker options that the IDE should include based on dependencies?

vsch

My problem of unresolved references was solved by resetting .cproject and .settings/language.settings.xml in RepRapFirmware project to repository version and then changing the project properties as per instructions. Subsequent build was successful.

dc42

@fma:

Good!

But I think I found the issue. The string:

"${workspace_loc:/${CoreName}/SAM4E8E/cores/arduino/syscalls.o}"

should be :

"${workspace_loc}:/${CoreName}/SAM4E8E/cores/arduino/syscalls.o}"

There where a missing bracket at the end of the workspace_loc var…

Can you confirm?

Recently I was getting this issue intermittently. I think it is an Eclipse bug. So in the latest commit I changed the path to this:

"${workspace_loc}/${CoreName}/SAM4E8E/cores/arduino/syscalls.o"

This seems to have resolved it.