Houston, we have a trunk.

git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@3122 221aa14e-8319-0410-a670-987f0aec2ac5

1 files changed, 43 insertions, 0 deletions

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
index 000000000..b1a554e43
--- /dev/null
+++ b/gr-howto-write-a-block/config/usrp_libusb.m4
@@ -0,0 +1,43 @@
+# Check for libusb support.             		-*- Autoconf -*-
+
+# Copyright 2003 Free Software Foundation, Inc.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+# 02111-1307, USA.
+
+AC_DEFUN([USRP_LIBUSB],
+[
+	AC_REQUIRE([AC_CANONICAL_HOST])
+	AC_LANG_PUSH(C)
+
+	AC_CHECK_HEADERS([usb.h],
+	  [],
+	  [ AC_MSG_ERROR([USRP requires libusb. usb.h not found, stop. 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" ],
+	  [ AC_MSG_ERROR([USRP requires libusb. usb_bulk_write not found, stop. See http://libusb.sf.net]) ]
+	)
+        LIBS="$save_LIBS"
+
+	AC_LANG_POP
+	AC_SUBST(USB_LIBS)
+])