Graphics on BangleJS2

However when I add -flto to that separate compile into __aeabi_d2f.o it does not help and does not work.

without -flto

$ arm-none-eabi-gcc -c -fno-common -fno-exceptions -fdata-sections -ffunction-sections -fpermissive -Os -fpic -fpie -mfloat-abi=softfp -mfpu=fpv4-sp-d16 -fsingle-precision-constant -Wdouble-promotion -Wfloat-conversion  -fno-fat-lto-objects __aeabi_d2f.cpp -o __aeabi_d2f.o
$ arm-none-eabi-objdump -d __aeabi_d2f.o

__aeabi_d2f.o:     file format elf32-littlearm


Disassembly of section .text.__aeabi_d2f:

00000000 <__aeabi_d2f>:
   0:   e3a005fe        mov     r0, #1065353216 ; 0x3f800000
   4:   e12fff1e        bx      lr

However with -flto the object file is in fact empty (with tons of other LTO stuff still in it :-)

$ arm-none-eabi-gcc -c -fno-common -fno-exceptions -fdata-sections -ffunction-sections -fpermissive -Os -fpic -fpie -mfloat-abi=softfp -mfpu=fpv4-sp-d16 -fsingle-precision-constant -Wdouble-promotion -Wfloat-conversion  -flto -fno-fat-lt
o-objects __aeabi_d2f.cpp -o __aeabi_d2f.o
$ arm-none-eabi-objdump -d __aeabi_d2f.o

__aeabi_d2f.o:     file format elf32-littlearm