Hi Michael,
I was wondering if you could help me fix an issue with
libusb not being recognized on Mac OS X 10.6.4.
I downloaded libusb-1.0.8 from the following location:
http://sourceforge.net/projects/libusb/files/libusb-1.0/libusb-1.0.8/libusb-1.0.8.tar.bz2/download
$ cd libusb-1.0.8
$ ./configure
$ make -j 4
$ sudo make install
Installation went fine and the headers are stored in
/usr/local/include/libusb-1.0/libusb.h
However, when I run gnuradio configure, I get the following error:
checking for USB... no
checking for USB... no
checking usb.h usability... no
checking usb.h presence... no
checking for usb.h... no
USRP requires libusb header 'usb.h' which was not found or was not usable. See
http://www.libusb.org
Unable to find dependency libusb.
I checked config/usrps_libusb.m4, but I don't know why it is not detecting the
library, and jumping straight to the end and trying to look for usb.h
# $1 is $req_libusb1:
# yes : check libusb-1.0
# no : check libusb-0.12
# "" : check libusb-0.12
AC_DEFUN([USRP_LIBUSB], [
dnl Use PKGCONFIG to check for packages first, then check to
dnl make sure the USB_* variables work (whether from PKGCONFIG
dnl or overridden by the user)
libusbok=no
have_libusb1=no
LIBUSB_PKG_CONFIG_NAME=''
if test x$1 = xyes; then
PKG_CHECK_MODULES(USB, libusb-1.0, [
libusbok=yes
have_libusb1=yes
usb_header='libusb-1.0/libusb.h'
usb_lib_func='libusb_bulk_transfer'
usb_lib_name='usb-1.0'
LIBUSB_PKG_CONFIG_NAME='libusb-1.0'
])
<snip...>
if test $libusbok = no; then
dnl if not, see if the pkgconfig module 'libusb-legacy' is available
PKG_CHECK_MODULES(USB, [libusb-legacy], [
libusbok=yes
LIBUSB_PKG_CONFIG_NAME='libusb-legacy'
], [libusbok=no])
fi
dnl set variables for further testing
usb_header='usb.h'
usb_lib_func='usb_bulk_write'
usb_lib_name='usb'
fi
Best regards,
Elvis
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