Thread: usb.h

i getting ther following error while using usb.h
in function `device_init':
usb.c.text+0x7): undefined reference `usb_init'
usb.c.text+0xc): undefined reference `usb_find_busses'
usb.c.text+0x11): undefined reference `usb_find_devices'
usb.c.text+0x16): undefined reference `usb_busses'
collect2: ld returned 1 exit status
how use gcc -l , -i give reference usb.h.i not using libusb.

posted jaypatel

how use gcc -l , -i give reference usb.h.i not using libusb.

why not using libusb? need link application!

code:

gcc app.c -lusb

p.s. remember this... system header files define function prototypes, external variable (such in usb.h). implementation these functions (and variables) located within library file (eg. /usr/lib/libusb.so).

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