Cannot compile lvgl 9.6 sample, arm_2d.h is missing, which lvgl version works?

Alternatives for arm_2d.h: []
ResolveLibrary(arm_2d.h)
  -> candidates: []
/home/urs-wagner/Arduino/libraries/lvgl/src/draw/sw/blend/arm2d/lv_blend_arm2d.c:17:10: fatal error: arm_2d.h: No such file or directory
   17 | #include <arm_2d.h>
      |          ^~~~~~~~~~
compilation terminated.
exit status 1

Compilation error: exit status 1

Not enough info to go on. Post the code so we can try to compile.

Ich changed this in lv_blend_arm.c:10


#incljude "./lv_blend_arm2d.h"

#if LV_USE_DRAW_ARM2D_SYNC

to

#if LV_USE_DRAW_ARM2D_SYNC

#incljude "./lv_blend_arm2d.h"

then I can compile it. I do not know what arm2d is.