Doesn't work on ARM (rasbperry pi)

[willemcvu]

I'm trying to build a package that includes gousb on a Raspberry Pi 2, and I'm unable to get gousb working at all.
go get -v github.com/google/gousb returns:

github.com/google/gousb (download)
github.com/google/gousb
# github.com/google/gousb
../github.com/google/gousb/libusb.go:234:29: could not determine kind of name for C.libusb_get_port_number
../github.com/google/gousb/libusb.go:396:19: could not determine kind of name for C.libusb_set_auto_detach_kernel_driver

Any ideas?

[zagrodzki]

Which version of Go and which version of libusb?

[willemcvu]

libusb-1.0-0 and go1.10.3.
I also tried go1.8, same exact issue.

[zagrodzki]

libusb-1.0-0 is not helpful, unfortunately, that's the name of the package (Debian or Ubuntu, I'm guessing), but not the version. dpkg -l libusb-1.0-0 should help.

[willemcvu]

Whoops, sorry!
2:1.0.11-1 is the version I'm using (as returned from dpkg).

[zagrodzki]

1.0.11 was released in May 2012, so I think it's fair to call it really old... Port number function was added few days later in May 2012, and kernel autodetach was added in June 2013. The first version that includes both was 1.0.16, released Jul 2013. Current version is 1.0.22.

If that is indeed Debian wheezy, you'll either need to install 1.0.19 from wheezy-backports or upgrade to jessie.

[willemcvu]

OK, thanks a ton, I will try upgrading my distro.

[Gustavomurta]

Updated Gousb instructions for Raspberry Pi :

Installing Golang on Raspberry Pi:
https://forums.raspberrypi.com/viewtopic.php?f=28&t=317369&p=1926129#p1926129

1. You must first install libusb-1.0
   apt-get install libusb-1.0-0-dev

2. Test the Libusb installation with these commands. Make sure the folders are correct (very important).
   Examples:
   root@raspberrypi:/home/pi# pkg-config --cflags libusb-1.0
   -I/usr/include/libusb-1.0
   root@raspberrypi:/home/pi# pkg-config --libs libusb-1.0
   -lusb-1.0
   root@raspberrypi:/home/pi#

3. Install the Gousb package, with this command and no message of errors:
   Example:
   root@raspberrypi:/home/pi/go#go get -v github.com/google/gousb (It might take a while)
   github.com/google/gousb
   root@raspberrypi:/home/pi/go#

4. Test the Gousb installation by compiling and running the example lsusb
   https://github.com/google/gousb/tree/master/lsusb/

[zagrodzki]

@Gustavomurta I don't think your instructions help - first, the problem mentioned in this question was exactly that the libusb that came with the distribution (as installed by apt-get in your documentation) was too old and didn't have the required functions.

Second, your instructions are specific to Debian-flavor of Raspberry Pi (Raspbian etc) and not generally useful for other distributions (SUSE, Gentoo, Arch etc.).