Umberto, > I would like to try this patch, how can I do?
You can add the patch to the homebrew formula (see the attached file). To do this, either use brew edit sane-backends or replace the file directly (/usr/local/Homebrew/Library/Taps/homebrew/homebrew-core/Formula/sane-backends.rb). You need to install Xcode from the Apple app store to compile from source. The compilation didn’t work for me out of the box because of a missing include file ‘jerror.h’. To fix this, I had to create another symlink: cd /usr/local/include ln -s ../Cellar/jpeg/9c/include/jerror.h Then, run brew reinstall sane-backends -s > Another thing: since the Mac recognize the USB Scanner already, would it be > possible to utilize the default macOS library for handling usb devices? So > configuring sane-backends with this instead of libusb. I’m just asking. I > tried searching something, I found old Apple Developer articles about it – > e.g. > https://developer.apple.com/library/archive/documentation/DeviceDrivers/Conceptual/USBBook/USBIntro/USBIntro.html#//apple_ref/doc/uid/TP40002643-TPXREF101 There is not much benefit to gain - the beauty of libusb is that it provides a common interface to usb related tasks on every platform. The different behaviour concerning configuration of custom devices is not a libusb problem, it is just different behaviour of the underlying operation system. So circumventing libusb wouldn’t fix anything. Kind regards, Oliver
class SaneBackends < Formula desc "Backends for scanner access" homepage "http://www.sane-project.org/"; url "https://mirrors.kernel.org/debian/pool/main/s/sane-backends/sane-backends_1.0.27.orig.tar.gz"; mirror "https://fossies.org/linux/misc/sane-backends-1.0.27.tar.gz"; sha256 "293747bf37275c424ebb2c833f8588601a60b2f9653945d5a3194875355e36c9" revision 5 head "https://salsa.debian.org/debian/sane-backends.git"; bottle do sha256 "19a5dd6aab043b2552e4ddb785c4f41c184019a7854e5bf28054ee809839a81f" => :mojave sha256 "7e17e4e13a6b9d4c532c3f4f498711c016c0c23331a25e9c4fe2543c1241bebf" => :high_sierra sha256 "c1c278d995f33f438ad6009ba4928157dd2ca74ec17a344a57b7af972c64e190" => :sierra sha256 "6073b7b25829eb031616894fe6ea5c34408fed9b42d3b421e6eba94d6cbbf948" => :el_capitan end depends_on "pkg-config" => :build depends_on "jpeg" depends_on "libpng" depends_on "libtiff" depends_on "libusb" depends_on "net-snmp" depends_on "openssl" patch :DATA def install system "./configure", "--disable-dependency-tracking", "--prefix=#{prefix}", "--localstatedir=#{var}", "--without-gphoto2", "--enable-local-backends", "--with-usb=yes" # Remove for > 1.0.27 # Workaround for bug in Makefile.am described here: # https://lists.alioth.debian.org/pipermail/sane-devel/2017-August/035576.html # It's already fixed in commit 519ff57. system "make" system "make", "install" end def post_install # Some drivers require a lockfile (var/"lock/sane").mkpath end test do assert_match prefix.to_s, shell_output("#{bin}/sane-config --prefix") end end __END__ diff --git a/sanei/sanei_usb.c b/sanei/sanei_usb.c index e4b23dc..294c64b 100644 --- a/sanei/sanei_usb.c +++ b/sanei/sanei_usb.c @@ -936,7 +936,7 @@ static void libusb_scan_devices(void) DBG (1, "%s: device 0x%04x/0x%04x at %03d:%03d is not configured\n", __func__, vid, pid, busno, address); - continue; + /* continue; */ } ret = libusb_get_config_descriptor (dev, 0, &config0); @@ -1640,7 +1640,7 @@ sanei_usb_open (SANE_String_Const devname, SANE_Int * dn) if (config == 0) { DBG (1, "sanei_usb_open: device `%s' not configured?\n", devname); - return SANE_STATUS_INVAL; + /*return SANE_STATUS_INVAL; */ } result = libusb_get_device_descriptor (dev, &desc);
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