Not working on OS X (High Sierra 10.13.6, Eclipse Oxygen)

[BrendanSimon]

I've cloned pc_simulator, installed sdl with brew, imported the project into Eclipse Oxygen, and click the build icon.
main.c builds ok, but the link fails.

It seems that objects or libraries are missing.

I tried running make from the root directly, which then built the demo (which doesn't run). I tried adding those objects to the pc_simulator link and it did compile, but again didn't run.

How can I get this running on OS X?

make all 
Building file: ../main.c
Invoking: Cross GCC Compiler
gcc -I"/Users/brendan/Sandbox/littlevgl/pc_simulator" -O0 -Og -g3 -Wall -c -fmessage-length=0 -MMD -MP -MF"main.d" -MT"main.o" -o "main.o" "../main.c"
Finished building: ../main.c
 
Building target: pc_simulator
Invoking: Cross GCC Linker
gcc  -o "pc_simulator"  ./main.o   
Undefined symbols for architecture x86_64:
  "_SDL_CreateThread", referenced from:
      _hal_init in main.o
  "_SDL_Delay", referenced from:
      _tick_thread in main.o
  "_demo_create", referenced from:
      _main in main.o
  "_lv_disp_drv_init", referenced from:
      _hal_init in main.o
  "_lv_disp_drv_register", referenced from:
      _hal_init in main.o
  "_lv_indev_drv_init", referenced from:
      _hal_init in main.o
  "_lv_indev_drv_register", referenced from:
      _hal_init in main.o
  "_lv_init", referenced from:
      _main in main.o
  "_lv_task_handler", referenced from:
      _main in main.o
  "_lv_tick_inc", referenced from:
      _tick_thread in main.o
  "_monitor_fill", referenced from:
      _hal_init in main.o
  "_monitor_flush", referenced from:
      _hal_init in main.o
  "_monitor_init", referenced from:
      _hal_init in main.o
  "_monitor_map", referenced from:
      _hal_init in main.o
  "_mouse_init", referenced from:
      _hal_init in main.o
  "_mouse_read", referenced from:
      _hal_init in main.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [pc_simulator] Error 1

[kisvegabor]

Hi,

I'm don't use OSX but from "Undefined symbols for architecture x86_64:" it seems you have installed/linked 32 bit SDL to a 64 bit machine or the opposite.

[BrendanSimon]

My system is 64-bit

$ uname -m
x86_64

The object files and libraries all seem to be 64-bit.

$ file /usr/local/lib/libSDL2.*
/usr/local/lib/libSDL2.a:     current ar archive
/usr/local/lib/libSDL2.dylib: Mach-O 64-bit dynamically linked shared library x86_64

$ file Debug/*.o
Debug/main.o: Mach-O 64-bit object x86_64

Doesn't the linker need to link the object files (or a library) in the root directory (which seem to only be generated if I invoke make from the root directory) ???

[BrendanSimon]

Note: I have built or installed littlevgl/lvgl. I'm assuming that the littlevgl/pc_simulator is standalone and will build the necessary lvgl dependencies via git submodules.

Is that correct? or do I need to make and install littlevgl/lvgl separately?

[kisvegabor]

I'm assuming that the littlevgl/pc_simulator is standalone and will build the necessary lvgl dependencies via git submodules.

Yes, just build in Eclipse and it should work.

Pleas ask your question in this thread: #12
Here some guys said they were able to build and run LittelvGL on OSX.

[paulocoutinhox]

Hi,

I have create two pull requests to make it work on OSX latest version. Tested locally:

#21
lvgl/lv_drivers#16

Thanks.

[kisvegabor]

Both merged! Thank you very much!

It should solve the majoraíty of the OSX issues, so close these issue.