build: libusb use AC_CHECK_HEADER

use AC_CHECK_HEADER rather than AC_CHECK_HEADERS so that we do not
generate a unrequired HAVE_LIBUSB_1_0_LIBUSB_H define.

Change-Id: I23a93d3813716dce797ca1514fdcb84533454c31
Signed-off-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-on: http://openocd.zylin.com/259
Tested-by: jenkins
Reviewed-by: Mathias Küster <kesmtp@freenet.de>

diff --git a/configure.ac b/configure.ac
index b2acab30d7b1d4001cc4ec3cbfad69b9657b3dc1..ad7681afc637f2e31627e640ee1177b0c951514e 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -1068,7 +1068,7 @@ use_libusb0=no
 use_libusb1=no
 if test $build_usb = yes -o $build_usb_ng = yes; then
   if test $check_libusb0 = no -a $build_usb_ng = yes; then
-       AC_CHECK_HEADERS([libusb-1.0/libusb.h],
+       AC_CHECK_HEADER([libusb-1.0/libusb.h],
                        [AC_DEFINE(HAVE_LIBUSB1, 1, [Define if you have libusb-1.0]) check_libusb0=no use_libusb1=yes ],
                        [ check_libusb0=yes use_libusb1=no ])
   fi