~/prog/STM32_HID_Bootloader/bootloader/F1$ make generic-pc13
CLEAN
arm-none-eabi-gcc (GNU Tools for ARM Embedded Processors 6-2017-q2-update) 6.3.1 20170620 (release) [ARM/embedded-6-branch revision 249437]
Copyright (C) 2016 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

MKDIR   build
CC      Src/main.c
CC      Src/usb.c
CC      Src/hid.c
CC      Src/led.c
CC      Src/flash.c
LD      build/hid_bootloader.elf
Memory region         Used Size  Region Size  %age Used
             RAM:        3024 B        20 KB     14.77%
           FLASH:        1984 B        64 KB      3.03%
GENBIN  build/hid_bootloader.bin
make: *** No rule to make target 'bootloader_only_binaries', needed by 'copy_generic-pc13'. Stop.