autoconf: check the kernel exposes WIMAX_GNL_OP_STATE_GET

Starting from here, the tools repository will start requiring a lot
new functionality exposed by the kernel for the next major release.

Signed-off-by: Inaky Perez-Gonzalez <inaky@linux.intel.com>

configure

@@ -11621,6 +11621,70 @@ I2400M_INCLUDES="-I${LINUX_KERNEL}/include"
 LINUX_INCLUDE_PATH="${LINUX_KERNEL}/include"
 
 
+{ $as_echo "$as_me:$LINENO: checking whether WIMAX_GNL_OP_STATE_GET is declared" >&5
+$as_echo_n "checking whether WIMAX_GNL_OP_STATE_GET is declared... " >&6; }
+if test "${ac_cv_have_decl_WIMAX_GNL_OP_STATE_GET+set}" = set; then
+  $as_echo_n "(cached) " >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <$LINUX_INCLUDE_PATH/linux/wimax.h>
+
+int
+main ()
+{
+#ifndef WIMAX_GNL_OP_STATE_GET
+  (void) WIMAX_GNL_OP_STATE_GET;
+#endif
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (ac_try="$ac_compile"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:$LINENO: $ac_try_echo\""
+$as_echo "$ac_try_echo") >&5
+  (eval "$ac_compile") 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && {
+	 test -z "$ac_c_werror_flag" ||
+	 test ! -s conftest.err
+       } && test -s conftest.$ac_objext; then
+  ac_cv_have_decl_WIMAX_GNL_OP_STATE_GET=yes
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+	ac_cv_have_decl_WIMAX_GNL_OP_STATE_GET=no
+fi
+
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+{ $as_echo "$as_me:$LINENO: result: $ac_cv_have_decl_WIMAX_GNL_OP_STATE_GET" >&5
+$as_echo "$ac_cv_have_decl_WIMAX_GNL_OP_STATE_GET" >&6; }
+if test "x$ac_cv_have_decl_WIMAX_GNL_OP_STATE_GET" = x""yes; then
+  { $as_echo "$as_me:$LINENO: Kernel / WiMAX driver is ok (> 2.6.30); has WIMAX_GNL_OP_STATE_GET" >&5
+$as_echo "$as_me: Kernel / WiMAX driver is ok (> 2.6.30); has WIMAX_GNL_OP_STATE_GET" >&6;}
+else
+  { { $as_echo "$as_me:$LINENO: error: Kernel / WiMAX driver is too old (<= 2.6.30); missing WIMAX_GNL_OP_STATE_GET" >&5
+$as_echo "$as_me: error: Kernel / WiMAX driver is too old (<= 2.6.30); missing WIMAX_GNL_OP_STATE_GET" >&2;}
+   { (exit 1); exit 1; }; }
+fi
+
+
 { $as_echo "$as_me:$LINENO: checking for dlopen in -ldl" >&5
 $as_echo_n "checking for dlopen in -ldl... " >&6; }
 if test "${ac_cv_lib_dl_dlopen+set}" = set; then

configure.in

@@ -123,6 +123,11 @@ fi
 AC_SUBST(I2400M_INCLUDES, "-I${LINUX_KERNEL}/include")
 AC_SUBST(LINUX_INCLUDE_PATH, "${LINUX_KERNEL}/include")
 
+AC_CHECK_DECL(WIMAX_GNL_OP_STATE_GET,
+              AC_MSG_NOTICE([Kernel / WiMAX driver is ok (> 2.6.30); has WIMAX_GNL_OP_STATE_GET]),
+              AC_MSG_ERROR([Kernel / WiMAX driver is too old (<= 2.6.30); missing WIMAX_GNL_OP_STATE_GET]), 
+              [#include <$LINUX_INCLUDE_PATH/linux/wimax.h>])
+
 AC_CHECK_LIB(dl, dlopen, dummy=yes,
 			AC_MSG_ERROR(dynamic linking loader is required))