Merge branch 'dfsg-orig'

[debian/gnuradio] / gr-howto-write-a-block / config / usrp_libusb.m4

diff --git a/gr-howto-write-a-block/config/usrp_libusb.m4 b/gr-howto-write-a-block/config/usrp_libusb.m4
new file mode 100644 (file)
index 0000000..cb3130c
--- /dev/null
+++ b/gr-howto-write-a-block/config/usrp_libusb.m4
@@ -0,0 +1,48 @@
+dnl Copyright 2003,2008 Free Software Foundation, Inc.
+dnl 
+dnl This file is part of GNU Radio
+dnl 
+dnl GNU Radio is free software; you can redistribute it and/or modify
+dnl it under the terms of the GNU General Public License as published by
+dnl the Free Software Foundation; either version 3, or (at your option)
+dnl any later version.
+dnl 
+dnl GNU Radio is distributed in the hope that it will be useful,
+dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
+dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+dnl GNU General Public License for more details.
+dnl 
+dnl You should have received a copy of the GNU General Public License
+dnl along with GNU Radio; see the file COPYING.  If not, write to
+dnl the Free Software Foundation, Inc., 51 Franklin Street,
+dnl Boston, MA 02110-1301, USA.
+
+AC_DEFUN([USRP_LIBUSB], [
+    libusbok=yes
+    PKG_CHECK_MODULES(USB, libusb, [], [
+        AC_LANG_PUSH(C)
+
+       AC_CHECK_HEADERS([usb.h], [], [libusbok=no; AC_MSG_RESULT([USRP requires libusb. usb.h not found. See http://libusb.sf.net])])
+
+       save_LIBS="$LIBS"
+       case "$host_os" in
+         darwin*)
+           LIBS="$LIBS -lIOKit"
+            ;;
+         *) ;;
+        esac
+
+       AC_SEARCH_LIBS(usb_bulk_write, [usb], [USB_LIBS="$LIBS"], [libusbok=no; AC_MSG_RESULT([USRP requires libusb. usb_bulk_write not found. See http://libusb.sf.net])])
+
+        LIBS="$save_LIBS"
+
+        AC_LANG_POP
+    ])
+
+    if test x$libusbok = xyes; then
+        AC_SUBST(USB_LIBS)
+       ifelse([$1], , :, [$1])
+    else
+        ifelse([$2], , :, [$2])
+    fi
+])