$ make LV_CFLAGS="-DLV_COLOR_DEPTH=16 -DLV_COLOR_16_SWAP=1" BOARD=GENERIC_SPIRAM

idf.py -D MICROPY_BOARD=GENERIC_SPIRAM -B build-GENERIC_SPIRAM  build
Checking Python dependencies...
Python requirements from /mnt/d/ubuntuuser/esp-idf/requirements.txt are satisfied.
Executing action: all (aliases: build)
Running ninja in directory /mnt/d/ubuntuuser/lv_micropython/ports/esp32/build-GENERIC_SPIRAM
Executing "ninja all"...
[2/399] cd /mnt/d/ubuntuuser/lv_micropython/ports/esp32/bu...*********************************************************"
Partition table binary generated. Contents:
*******************************************************************************
# Espressif ESP32 Partition Table
# Name, Type, SubType, Offset, Size, Flags
nvs,data,nvs,0x9000,24K,
phy_init,data,phy,0xf000,4K,
factory,app,factory,0x10000,2304K,
vfs,data,fat,0x250000,1728K,
*******************************************************************************
[3/399] Performing build step for 'bootloader'
ninja: no work to do.
[9/397] Generating ../../genhdr/qstrdefs.collected.h
QSTR updated
[396/397] Linking CXX executable micropython.elf
FAILED: micropython.elf
: && /home/tommy/.espressif/tools/xtensa-esp32-elf/esp-2020r3-8.4.0/xtensa-esp32-elf/bin/xtensa-esp32-elf-g++  -mlongcalls -Wno-frame-address  -nostdlib CMakeFiles/micropython.elf.dir/project_elf_src.c.obj  -o micropython.elf  esp-idf/esp_ringbuf/libesp_ringbuf.a  esp-idf/driver/libdriver.a  esp-idf/wpa_supplicant/libwpa_supplicant.a  esp-idf/efuse/libefuse.a  esp-idf/bootloader_support/libbootloader_support.a  esp-idf/app_update/libapp_update.a  esp-idf/spi_flash/libspi_flash.a  esp-idf/nvs_flash/libnvs_flash.a  esp-idf/esp_wifi/libesp_wifi.a  esp-idf/esp_eth/libesp_eth.a  esp-idf/lwip/liblwip.a  esp-idf/tcpip_adapter/libtcpip_adapter.a  esp-idf/esp_event/libesp_event.a  esp-idf/pthread/libpthread.a  esp-idf/espcoredump/libespcoredump.a  esp-idf/esp32/libesp32.a  esp-idf/xtensa/libxtensa.a  esp-idf/esp_common/libesp_common.a  esp-idf/esp_rom/libesp_rom.a  esp-idf/soc/libsoc.a  esp-idf/log/liblog.a  esp-idf/heap/libheap.a  esp-idf/freertos/libfreertos.a  esp-idf/vfs/libvfs.a  esp-idf/newlib/libnewlib.a  esp-idf/cxx/libcxx.a  esp-idf/app_trace/libapp_trace.a  esp-idf/asio/libasio.a  esp-idf/bt/libbt.a  esp-idf/coap/libcoap.a  esp-idf/console/libconsole.a  esp-idf/nghttp/libnghttp.a  esp-idf/esp-tls/libesp-tls.a  esp-idf/esp_adc_cal/libesp_adc_cal.a  esp-idf/esp_gdbstub/libesp_gdbstub.a  esp-idf/tcp_transport/libtcp_transport.a  esp-idf/esp_http_client/libesp_http_client.a  esp-idf/esp_http_server/libesp_http_server.a  esp-idf/esp_https_ota/libesp_https_ota.a  esp-idf/protobuf-c/libprotobuf-c.a  esp-idf/protocomm/libprotocomm.a  esp-idf/mdns/libmdns.a  esp-idf/esp_local_ctrl/libesp_local_ctrl.a  esp-idf/esp_websocket_client/libesp_websocket_client.a  esp-idf/expat/libexpat.a  esp-idf/wear_levelling/libwear_levelling.a  esp-idf/sdmmc/libsdmmc.a  esp-idf/fatfs/libfatfs.a  esp-idf/freemodbus/libfreemodbus.a  esp-idf/jsmn/libjsmn.a  esp-idf/json/libjson.a  esp-idf/libsodium/liblibsodium.a  esp-idf/mqtt/libmqtt.a  esp-idf/openssl/libopenssl.a  esp-idf/spiffs/libspiffs.a  esp-idf/ulp/libulp.a  esp-idf/unity/libunity.a  esp-idf/wifi_provisioning/libwifi_provisioning.a  esp-idf/main/libmain.a  esp-idf/lvgl/liblvgl.a  -Wl,--cref -Wl,--Map=/mnt/d/ubuntuuser/lv_micropython/ports/esp32/build-GENERIC_SPIRAM/micropython.map  -fno-rtti  -fno-lto  esp-idf/wear_levelling/libwear_levelling.a  esp-idf/protocomm/libprotocomm.a  esp-idf/esp_http_server/libesp_http_server.a  esp-idf/protobuf-c/libprotobuf-c.a  esp-idf/json/libjson.a  esp-idf/main/libmain.a  esp-idf/bt/libbt.a  -L/mnt/d/ubuntuuser/esp-idf/components/bt/controller/lib  -lbtdm_app  esp-idf/esp_http_client/libesp_http_client.a  esp-idf/tcp_transport/libtcp_transport.a  esp-idf/esp-tls/libesp-tls.a  esp-idf/nghttp/libnghttp.a  esp-idf/mdns/libmdns.a  esp-idf/console/libconsole.a  esp-idf/sdmmc/libsdmmc.a  esp-idf/ulp/libulp.a  esp-idf/esp_ringbuf/libesp_ringbuf.a  esp-idf/driver/libdriver.a  esp-idf/wpa_supplicant/libwpa_supplicant.a  esp-idf/efuse/libefuse.a  esp-idf/bootloader_support/libbootloader_support.a  esp-idf/app_update/libapp_update.a  esp-idf/spi_flash/libspi_flash.a  esp-idf/nvs_flash/libnvs_flash.a  esp-idf/esp_wifi/libesp_wifi.a  esp-idf/esp_eth/libesp_eth.a  esp-idf/lwip/liblwip.a  esp-idf/tcpip_adapter/libtcpip_adapter.a  esp-idf/esp_event/libesp_event.a  esp-idf/pthread/libpthread.a  esp-idf/espcoredump/libespcoredump.a  esp-idf/esp32/libesp32.a  esp-idf/xtensa/libxtensa.a  esp-idf/esp_common/libesp_common.a  esp-idf/esp_rom/libesp_rom.a  esp-idf/soc/libsoc.a  esp-idf/log/liblog.a  esp-idf/heap/libheap.a  esp-idf/freertos/libfreertos.a  esp-idf/vfs/libvfs.a  esp-idf/newlib/libnewlib.a  esp-idf/cxx/libcxx.a  esp-idf/app_trace/libapp_trace.a  esp-idf/mbedtls/mbedtls/library/libmbedtls.a  esp-idf/mbedtls/mbedtls/library/libmbedcrypto.a  esp-idf/mbedtls/mbedtls/library/libmbedx509.a  /mnt/d/ubuntuuser/esp-idf/components/esp_wifi/lib_esp32/libcoexist.a  /mnt/d/ubuntuuser/esp-idf/components/esp_wifi/lib_esp32/libcore.a  /mnt/d/ubuntuuser/esp-idf/components/esp_wifi/lib_esp32/libespnow.a  /mnt/d/ubuntuuser/esp-idf/components/esp_wifi/lib_esp32/libmesh.a  /mnt/d/ubuntuuser/esp-idf/components/esp_wifi/lib_esp32/libnet80211.a  /mnt/d/ubuntuuser/esp-idf/components/esp_wifi/lib_esp32/libphy.a  /mnt/d/ubuntuuser/esp-idf/components/esp_wifi/lib_esp32/libpp.a  /mnt/d/ubuntuuser/esp-idf/components/esp_wifi/lib_esp32/librtc.a  /mnt/d/ubuntuuser/esp-idf/components/esp_wifi/lib_esp32/libsmartconfig.a  esp-idf/esp_ringbuf/libesp_ringbuf.a  esp-idf/driver/libdriver.a  esp-idf/wpa_supplicant/libwpa_supplicant.a  esp-idf/efuse/libefuse.a  esp-idf/bootloader_support/libbootloader_support.a  esp-idf/app_update/libapp_update.a  esp-idf/spi_flash/libspi_flash.a  esp-idf/nvs_flash/libnvs_flash.a  esp-idf/esp_wifi/libesp_wifi.a  esp-idf/esp_eth/libesp_eth.a  esp-idf/lwip/liblwip.a  esp-idf/tcpip_adapter/libtcpip_adapter.a  esp-idf/esp_event/libesp_event.a  esp-idf/pthread/libpthread.a  esp-idf/espcoredump/libespcoredump.a  esp-idf/esp32/libesp32.a  esp-idf/xtensa/libxtensa.a  esp-idf/esp_common/libesp_common.a  esp-idf/esp_rom/libesp_rom.a  esp-idf/soc/libsoc.a  esp-idf/log/liblog.a  esp-idf/heap/libheap.a  esp-idf/freertos/libfreertos.a  esp-idf/vfs/libvfs.a  esp-idf/newlib/libnewlib.a  esp-idf/cxx/libcxx.a  esp-idf/app_trace/libapp_trace.a  esp-idf/mbedtls/mbedtls/library/libmbedtls.a  esp-idf/mbedtls/mbedtls/library/libmbedcrypto.a  esp-idf/mbedtls/mbedtls/library/libmbedx509.a  /mnt/d/ubuntuuser/esp-idf/components/esp_wifi/lib_esp32/libcoexist.a  /mnt/d/ubuntuuser/esp-idf/components/esp_wifi/lib_esp32/libcore.a  /mnt/d/ubuntuuser/esp-idf/components/esp_wifi/lib_esp32/libespnow.a  /mnt/d/ubuntuuser/esp-idf/components/esp_wifi/lib_esp32/libmesh.a  /mnt/d/ubuntuuser/esp-idf/components/esp_wifi/lib_esp32/libnet80211.a  /mnt/d/ubuntuuser/esp-idf/components/esp_wifi/lib_esp32/libphy.a  /mnt/d/ubuntuuser/esp-idf/components/esp_wifi/lib_esp32/libpp.a  /mnt/d/ubuntuuser/esp-idf/components/esp_wifi/lib_esp32/librtc.a  /mnt/d/ubuntuuser/esp-idf/components/esp_wifi/lib_esp32/libsmartconfig.a  -u esp_app_desc  -L /mnt/d/ubuntuuser/esp-idf/components/esp_wifi/lib_esp32  -Wl,--wrap=vPortCleanUpTCB  -u pthread_include_pthread_impl  -u pthread_include_pthread_cond_impl  -u pthread_include_pthread_local_storage_impl  -L /mnt/d/ubuntuuser/lv_micropython/ports/esp32/build-GENERIC_SPIRAM/esp-idf/esp32  -T esp32_out.ld  -u app_main  -L /mnt/d/ubuntuuser/lv_micropython/ports/esp32/build-GENERIC_SPIRAM/esp-idf/esp32/ld  -T esp32.project.ld  -L /mnt/d/ubuntuuser/esp-idf/components/esp32/ld  -T esp32.peripherals.ld  -u call_user_start_cpu0  -u ld_include_panic_highint_hdl  -mfix-esp32-psram-cache-issue  -mfix-esp32-psram-cache-strategy=memw  /mnt/d/ubuntuuser/esp-idf/components/xtensa/esp32/libhal.a  -Wl,--gc-sections  -L /mnt/d/ubuntuuser/esp-idf/components/esp_rom/esp32/ld  -T esp32.rom.ld  -T esp32.rom.libgcc.ld  -T esp32.rom.syscalls.ld  -T esp32.rom.newlib-data.ld  -Wl,--undefined=uxTopUsedPriority  -u vfs_include_syscalls_impl  esp-idf/newlib/libnewlib.a  -u newlib_include_locks_impl  -u newlib_include_heap_impl  -u newlib_include_syscalls_impl  -u newlib_include_pthread_impl  -u __cxa_guard_dummy  -lstdc++  esp-idf/pthread/libpthread.a  -u __cxx_fatal_exception  -lgcov  -lc  -lm  -lgcc && :
/home/tommy/.espressif/tools/xtensa-esp32-elf/esp-2020r3-8.4.0/xtensa-esp32-elf/bin/../lib/gcc/xtensa-esp32-elf/8.4.0/../../../../xtensa-esp32-elf/bin/ld: esp-idf/main/libmain.a(lv_mp.c.obj):(.rodata.mp_lv_font_my_26+0x4): undefined reference to `lv_font_my_26'
collect2: error: ld returned 1 exit status
ninja: build stopped: subcommand failed.
ninja failed with exit code 1
make: *** [Makefile:34: all] Error 2