Fix configure tests to play nice with GCC 4.6

[zfs.git] / config / kernel-rq-for-each_segment.m4

diff --git a/config/kernel-rq-for-each_segment.m4 b/config/kernel-rq-for-each_segment.m4
index 15f030f..1821478 100644 (file)
--- a/config/kernel-rq-for-each_segment.m4
+++ b/config/kernel-rq-for-each_segment.m4
@@ -3,6 +3,8 @@ dnl # 2.6.x API change
 dnl #
 AC_DEFUN([ZFS_AC_KERNEL_RQ_FOR_EACH_SEGMENT], [
        AC_MSG_CHECKING([whether rq_for_each_segment() is available])
+       tmp_flags="$EXTRA_KCFLAGS"
+       EXTRA_KCFLAGS="-Wno-unused-but-set-variable"
        ZFS_LINUX_TRY_COMPILE([
                #include <linux/blkdev.h>
        ],[
@@ -17,4 +19,5 @@ AC_DEFUN([ZFS_AC_KERNEL_RQ_FOR_EACH_SEGMENT], [
        ],[
                AC_MSG_RESULT(no)
        ])
+       EXTRA_KCFLAGS="$tmp_flags"
 ])