1 dnl Copyright 2003,2008,2009 Free Software Foundation, Inc.
3 dnl This file is part of GNU Radio
5 dnl GNU Radio is free software; you can redistribute it and/or modify
6 dnl it under the terms of the GNU General Public License as published by
7 dnl the Free Software Foundation; either version 3, or (at your option)
10 dnl GNU Radio is distributed in the hope that it will be useful,
11 dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
12 dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 dnl GNU General Public License for more details.
15 dnl You should have received a copy of the GNU General Public License
16 dnl along with GNU Radio; see the file COPYING. If not, write to
17 dnl the Free Software Foundation, Inc., 51 Franklin Street,
18 dnl Boston, MA 02110-1301, USA.
21 # yes : check libusb-1.0
22 # no : check libusb-0.12
23 # "" : check libusb-0.12
26 AC_DEFUN([USRP_LIBUSB], [
27 dnl Use PKGCONFIG to check for packages first, then check to
28 dnl make sure the USB_* variables work (whether from PKGCONFIG
29 dnl or overridden by the user)
33 if test x$1 = xyes; then
34 PKG_CHECK_MODULES(USB, libusb-1.0, [
37 usb_header='libusb-1.0/libusb.h'
38 usb_lib_func='libusb_bulk_transfer'
39 usb_lib_name='usb-1.0'
42 if test $libusbok = no; then
43 dnl not using libusb1, or PKGCONFIG check for libusb1 failed;
44 dnl see if legacy version is found.
45 dnl it might be installed under the name either 'libusb' or
46 dnl 'libusb-legacy'. check them in that order.
48 dnl see if the pkgconfig module 'libusb' is available
49 PKG_CHECK_MODULES(USB, libusb, [libusbok=yes], [libusbok=no])
50 dnl PKG_CHECK_MODULES does not work correctly when embedded
51 if test $libusbok = no; then
52 dnl if not, see if the pkgconfig module 'libusb-legacy' is available
53 PKG_CHECK_MODULES(USB, [libusb-legacy], [libusbok=yes], [libusbok=no])
55 if test $libusbok = yes; then
56 dnl if PKGCONFIG worked, set variables for further testing
58 usb_lib_func='usb_bulk_write'
62 if test $libusbok = no; then
63 AC_MSG_RESULT([USRP requires libusb, which was not found. See http://www.libusb.org])
66 dnl either some pkgconfig LIBUSB* variant was found, or USB_*
67 dnl variables were overridden by the user as arguments to configure.
68 dnl either way, check the USB_* variables to make sure they work
71 save_CPPFLAGS="$CPPFLAGS"
72 if test x$USB_INCLUDEDIR != x; then
73 USB_INCLUDES="-I$USB_INCLUDEDIR"
74 CPPFLAGS="$CPPFLAGS $USB_INCLUDES"
75 AC_SUBST(USB_INCLUDES)
77 AC_CHECK_HEADERS([$usb_header], [], [libusbok=no])
78 CPPFLAGS="$save_CPPFLAGS"
81 if test $libusbok = no; then
82 AC_MSG_RESULT([USRP requires libusb header '$usb_header' which was not found or was not usable. See http://www.libusb.org])
85 dnl found the header; now make sure the library is OK
91 USB_LIBS="$USB_LIBS -lIOKit"
95 LIBS="$LIBS $USB_LIBS"
96 AC_CHECK_LIB([$usb_lib_name], [$usb_lib_func], [], [
98 AC_MSG_RESULT([USRP requires library '$usb_lib_name' with function '$usb_lib_func', which was either not found or was not usable. See http://www.libusb.org])
104 if test $libusbok = yes; then
106 ifelse([$2], , :, [$2])
110 ifelse([$3], , :, [$3])