Example compiler issue using Windows 10, compiling but bin-file is 0 bytes

[rondlh]

I'm trying to compile the device CDC dual port example(examples\device\cdc_dual_ports) in Windows 10 for the stm32f407blackvet board.
I downloaded the dependencies (python tools\get_deps.py stm32f4) and installed the arm-none-eabi toolchain 14.2.Rel1 from https://developer.arm.com/downloads/-/arm-gnu-toolchain-downloads).
I installed make with "choco install make".

In the example directory (examples\device\cdc_dual_ports) I run: "make BOARD=stm32f407blackvet all"
Compilation seems ok (some data alignment warning), and at the end a warning: "warning: cannot find entry symbol _start; defaulting to 00008000"

The created bin-file is 0 bytes. (Map is 100Kb, elf is 752 bytes, hex is 34 bytes). See below for the compiler output.
I run the cmd.exe with admin rights, used Cygwin, but nothing works.

Anybody? Thanks in advance, I'm aware this is quite out of scope for the project.

LINK _build/stm32f407blackvet/cdc_dual_ports.elf
C:/Arm_GNU_Toolchain/bin/../lib/gcc/arm-none-eabi/14.2.1/../../../../arm-none-eabi/bin/ld.exe: warning: cannot find entry symbol _start; defaulting to 00008000
Memory region         Used Size  Region Size  %age Used
CREATE _build/stm32f407blackvet/cdc_dual_ports.bin
arm-none-eabi-objcopy -O binary  _build/stm32f407blackvet/cdc_dual_ports.elf _build/stm32f407blackvet/cdc_dual_ports.binCREATE _build/stm32f407blackvet/cdc_dual_ports.hex
''
   text    data     bss     dec     hex filename
      0       0       0       0       0 _build/stm32f407blackvet/cdc_dual_ports.elf

[rondlh]

It seems the build script has some errors, which causes the issue

[hathach]

build script is indeed not correct (obsolete), fixed with #2979 . thank you for your issue.