can not found usb.h when compiling Openocd using mingw

can not found usb.h when compiling Openocd using mingw?

jlink.c:32:17: usb.h: No such file or directory

jlink.c: In function `jlink_usb_open’:

jlink.c:750: warning: assignment makes pointer from integer without a cast

jlink.c:754: error: dereferencing pointer to incomplete type

jlink.c:756: error: dereferencing pointer to incomplete type

jlink.c:756: error: dereferencing pointer to incomplete type

jlink.c:758: error: dereferencing pointer to incomplete type

jlink.c:758: error: dereferencing pointer to incomplete type

jlink.c:760: warning: assignment makes pointer from integer without a cast

jlink.c:763: error: dereferencing pointer to incomplete type

make[3]: *** [jlink.o] Error 1

make[3]: Leaving directory `/c/openocd/src/jtag’

make[2]: *** [all-recursive] Error 1

make[2]: Leaving directory `/c/openocd/src’

make[1]: *** [all-recursive] Error 1

make[1]: Leaving directory `/c/openocd’

make: *** [all] Error 2

how to set the include path in MSYS?

have you installed libusb:

Cheers

Spen