Compile errors "undefined reference to 'lrintf' for RRF2

dc42

The -L options are the library paths, as set in the Libraries tab in the linked settings. The -l options are the library file names, also set in the Libraries tab.

The undefined symbols you listed are mostly supplied by the C maths library, which should have been installed with Gnu ARM Developer Tools and should be included by the linker automatically.

Which versions of Eclipse and Gnu ARM Developer Tools are you using?

jml

Thank you dc42. On Mac, Eclipse Version: 2020-09 (4.17.0). The arm developer tools thing in my downloads folder is named:
gcc-arm-none-eabi-6-2017-q2-update

jml

~~However, when I look in Duet2CombinedFirmware.map, I see a line for llrint with the following text:~~

llrint /usr/local/Caskroom/gcc-arm-embedded/7-2018-q2-update/gcc-arm-none-eabi-7-2018-q2-update/bin/../lib/gcc/arm-none-eabi/7.3.1/../../../../arm-none-eabi/lib/thumb/v7e-m/fpv4-sp/hard/libm.a(lib_a-s_llrint.o)

edit: i was looking at an old file

dc42

@jml, try using a later version of Gnu ARM Developer Tools, but not the very latest one because that is a new major compiler version. The 2019 q4 version should be about right.

jml

I have downloaded it and unzipped it. Then in RepRapFirmware Properties, C/C++ Build > Settings > Cross Settings, I changed the path to be to the unzipped folder:
/Users/John/Downloads/gcc-arm-none-eabi-9-2019-q4-major
(should there be a "/bin" at the end?)

However, I get the exact same errors.

jml

Also, should i be making the Cross Settings path to:
/Users/John/Downloads/gcc-arm-none-eabi-9-2019-q4-major/bin
for CoreNG, FreeRTOS, and RRF? I noticed FreeRTOS had a different path:
/usr/local/bin

dc42

@jml said in Compile errors "undefined reference to 'lrintf' for RRF2:

Also, should i be making the Cross Settings path to:
/Users/John/Downloads/gcc-arm-none-eabi-9-2019-q4-major/bin
for CoreNG, FreeRTOS, and RRF? I noticed FreeRTOS had a different path:
/usr/local/bin

For all projects except the WiFiServer projects, the files on github set it to {ArmGccPath}. You should not have changed that. ArmGccPath is a build variable set up in Window->Preferences, which you should set to that gcc-arm-none-eabi-9-2019-q4-major/bin folder as per the build instructions.

jml

Ok they are no all set to gcc-arm-none-eabi-9-2019-q4-major/bin

Still the same errors persist. Here is another example error:

/Users/John/Downloads/gcc-arm-none-eabi-9-2019-q4-major/bin/../lib/gcc/arm-none-eabi/9.2.1/../../../../arm-none-eabi/bin/ld: ScaraKinematics.cpp:(.text._ZNK15ScaraKinematics21MotorStepsToCartesianEPKlPKfjjPf+0x7e): undefined reference to `sinf'

If I actually go to the paths, I do see the right things in those folders. I'm on Mac by the way, so I wonder if that has anything to do with it?

jml

For all projects except the WiFiServer projects, the files on github set it to {ArmGccPath}. You should not have changed that.

My bad - i was following old instructions that mentioned setting it to /usr/local/bin

jml

Anyway, I've tried the new 2019 q4 major update, and it is not improving the results at all. Still lots of the same error like undefined reference to `pow'. Hmmmm