Setting up Eclipse to Develop Firmware

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.