lvgl: cant run any demo on arduino ide

Describe the bug

I cant Build lvgl demo with Arduino IDE. I use the newest Master branches of lv_example and the lvgl master. then i get the build error no found lvgl/lvgl.h so i replace all lvgl/lvgl.h to lvgl.h the error appears but i get the following errors. that is not a good experience.

libraries/lv_examples/lv_demo_benchmark/lv_demo_benchmark.c.o:(.literal.txt_small_compr_cb+0x0): undefined reference to `lv_font_montserrat_12_compr_az'
libraries/lv_examples/lv_demo_benchmark/lv_demo_benchmark.c.o:(.literal.txt_medium_compr_cb+0x0): undefined reference to `lv_font_montserrat_16_compr_az'
libraries/lv_examples/lv_demo_benchmark/lv_demo_benchmark.c.o:(.literal.txt_large_compr_cb+0x0): undefined reference to `lv_font_montserrat_28_compr_az'
libraries/lv_examples/lv_demo_benchmark/lv_demo_benchmark.c.o:(.literal.img_rgb_cb+0x0): undefined reference to `img_cogwheel_rgb'
libraries/lv_examples/lv_demo_benchmark/lv_demo_benchmark.c.o:(.literal.img_argb_cb+0x0): undefined reference to `img_cogwheel_argb'
libraries/lv_examples/lv_demo_benchmark/lv_demo_benchmark.c.o:(.literal.img_ckey_cb+0x0): undefined reference to `img_cogwheel_chroma_keyed'
libraries/lv_examples/lv_demo_benchmark/lv_demo_benchmark.c.o:(.literal.img_index_cb+0x0): undefined reference to `img_cogwheel_indexed16'
libraries/lv_examples/lv_demo_benchmark/lv_demo_benchmark.c.o:(.literal.img_alpha_cb+0x0): undefined reference to `img_cogwheel_alpha16'

dosnt work too

sketch/testlvgl.ino.cpp.o:(.literal._Z5setupv+0x28): undefined reference to `lv_demo_widgets'

i use already the latest master from github rn

To Reproduce

Build with Arduino IDE. And i have installed lvgl and lvgl_examples via library manager. and overwrite it with the master version of github

Expected behavior

working demo