gd32v dfu-util When I run ./configure, error : syntax error near unexpected token `USB,' #7

Hi,

I hv this problem compiling on this github : https://github.com/riscv-mcu/gd32-dfu-utils

checking for libusb_init in -lusb... no
./configure: line 3954: syntax error near unexpected token USB,' ./configure: line 3954: PKG_CHECK_MODULES(USB, libusb-1.0 >= 1.0.0,,'