Replace Devo7E bootloader?

$ make TARGET=pill
arm-none-eabi-gcc -DAPP_ADDRESS=0x08002000 -DLED_INVERTED -DLED_PORT=GPIOC -DLED
_TIMER=RCC_GPIOC -DLED_PIN=GPIO13 -DBUTTON_INVERTED -DBUTTON_PORT=GPIOB -DBUTTON
_TIMER=RCC_GPIOB -DBUTTON_PIN=GPIO2 -Os -g -Wextra -Wshadow -Wimplicit-function-
declaration -Wredundant-decls -Wmissing-prototypes -Wstrict-prototypes -fno-comm
on -ffunction-sections -fdata-sections -MD -Wall -Wundef -I../libopencm3//includ
e -DSTM32F1 -mthumb -mcpu=cortex-m3 -msoft-float -mfix-cortex-m3-ldrd -o pill.o
-c usbdfu.c
usbdfu.c: In function 'usbdfu_set_config':
usbdfu.c:242:5: warning: passing argument 4 of 'usbd_register_control_callback'
from incompatible pointer type [enabled by default]
     usbdfu_control_request);
     ^
In file included from usbdfu.c:26:0:
../libopencm3//include/libopencm3/usb/usbd.h:127:12: note: expected 'usbd_contro
l_callback' but argument is of type 'int (*)(struct usbd_device *, struct usb_se
tup_data *, uint8_t **, uint16_t *, int (**)(struct usbd_device *, struct usb_se
tup_data *))'
 extern int usbd_register_control_callback(usbd_device *usbd_dev, uint8_t type,
            ^
usbdfu.c: In function 'main':
usbdfu.c:312:24: error: 'stm32f103_usb_driver' undeclared (first use in this fun
ction)
  usbd_dev = usbd_init(&stm32f103_usb_driver, &dev, &config, usb_strings, 4, usb
d_control_buffer, sizeof(usbd_control_buffer));
                        ^
usbdfu.c:312:24: note: each undeclared identifier is reported only once for each
 function it appears in
make: *** [pill.o] Error 1

$ make TARGET=devo7e
arm-none-eabi-gcc -DAPP_ADDRESS=0x08002000 -DLED_PORT=GPIOB -DLED_TIMER=RCC_GPIO
B -DLED_PIN=GPIO1 -DBUTTON_PORT=GPIOC -DBUTTON_TIMER=RCC_GPIOC -DBUTTON_PIN=GPIO
9 -DMATRIX_PORT=GPIOB -DMATRIX_TIMER=RCC_GPIOB -DMATRIX_PIN=GPIO8 -Os -g -Wextra
 -Wshadow -Wimplicit-function-declaration -Wredundant-decls -Wmissing-prototypes
 -Wstrict-prototypes -fno-common -ffunction-sections -fdata-sections -MD -Wall -
Wundef -I../libopencm3//include -DSTM32F1 -mthumb -mcpu=cortex-m3 -msoft-float -
mfix-cortex-m3-ldrd -o devo7e.o -c usbdfu.c
usbdfu.c: In function 'usbdfu_set_config':
usbdfu.c:242:5: warning: passing argument 4 of 'usbd_register_control_callback'
from incompatible pointer type [enabled by default]
     usbdfu_control_request);
     ^
In file included from usbdfu.c:26:0:
../libopencm3//include/libopencm3/usb/usbd.h:127:12: note: expected 'usbd_contro
l_callback' but argument is of type 'int (*)(struct usbd_device *, struct usb_se
tup_data *, uint8_t **, uint16_t *, int (**)(struct usbd_device *, struct usb_se
tup_data *))'
 extern int usbd_register_control_callback(usbd_device *usbd_dev, uint8_t type,
            ^
usbdfu.c: In function 'main':
usbdfu.c:312:24: error: 'stm32f103_usb_driver' undeclared (first use in this fun
ction)
  usbd_dev = usbd_init(&stm32f103_usb_driver, &dev, &config, usb_strings, 4, usb
d_control_buffer, sizeof(usbd_control_buffer));
                        ^
usbdfu.c:312:24: note: each undeclared identifier is reported only once for each
 function it appears in
make: *** [devo7e.o] Error 1