b9c59ec83a
As of GCC 4.6, specific kernel 2.6.32 header files do not compile cleanly without warnings. One specific example of this is the arch/x86/include/asm/percpu.h file. Thus, a few of the configure tests were getting hung up on this and the '-Wno-unsued-but-set-variables' compile option had to be introduced. Signed-off-by: Prakash Surya <surya1@llnl.gov> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #459
26 lines
783 B
Plaintext
26 lines
783 B
Plaintext
dnl #
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dnl # 2.6.30 API change
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dnl # bdev_hardsect_size() replaced with bdev_logical_block_size(). While
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dnl # it has been true for a while that there was no strict 1:1 mapping
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dnl # between physical sector size and logical block size this change makes
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dnl # it explicit.
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_BDEV_LOGICAL_BLOCK_SIZE], [
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AC_MSG_CHECKING([whether bdev_logical_block_size() is available])
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tmp_flags="$EXTRA_KCFLAGS"
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EXTRA_KCFLAGS="-Wno-unused-but-set-variable"
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ZFS_LINUX_TRY_COMPILE([
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#include <linux/blkdev.h>
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],[
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struct block_device *bdev = NULL;
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bdev_logical_block_size(bdev);
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],[
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_BDEV_LOGICAL_BLOCK_SIZE, 1,
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[bdev_logical_block_size() is available])
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],[
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AC_MSG_RESULT(no)
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])
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EXTRA_KCFLAGS="$tmp_flags"
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])
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