Setting up Eclipse to Develop Firmware

[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.