64 bit build fails on MacOS

[u77345]

When building on MacOS the build silently fails for 64 bit build, when configured with:

./configure 3 /usr/local/bin/aarch64-elf- 64

make -d reveals an issue compiling lvgl:

    Pruning file `../circle/addon/lvgl/lvgl/src/misc/../hal/../lv_conf_internal.h'.
    Pruning file `/usr/local/Cellar/aarch64-elf-gcc/13.1.0/lib/gcc/aarch64-elf/13.1.0/include/stdbool.h'.
    Pruning file `../circle/addon/lvgl/lvgl/src/misc/lv_math.h'.
    Pruning file `../circle/addon/lvgl/lvgl/src/misc/lv_mem.h'.
    Pruning file `/usr/local/Cellar/aarch64-elf-gcc/13.1.0/lib/gcc/aarch64-elf/13.1.0/include/stddef.h'.
    Pruning file `string.h'.
   Finished prerequisites of target file `main.o'.
  Giving up on target file `main.o'.
 Finished prerequisites of target file `kernel8.img'.
Giving up on target file `kernel8.img'.

Workaround: 32 bit build creates viable kernel.img with:

./configure 3 /usr/local/bin/arm-none-eabi- 32

[rsta2]

Probably an incompatibility with your 64-bit toolchain. Have you tried an aarch64-none-elf target toolchain from this website? I'm using the 12.2.Rel1 version and MiniSynth Pi builds successfully on my Linux host with it. Unfortunately I cannot try this by myself on MacOS, because I do not have a Mac.

[u77345]

Will test with that toolcain.

Another concern is the build failing silently on missing headers or errors in the headers, due to the -MG in Rules.mk. Also applies to the Circle project. Is -MG absolutely necessary?

[rsta2]

The option -MG is used for dependency checking. When you have problems with it, you can disable dependency checking by adding the following line to the file circle/Config.mk after configure:

CHECK_DEPS = 0

[u77345]

The Linux version of the toolchain works correctly. From now I'm building it in Docker.