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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
22 lines
475 B
Plaintext
22 lines
475 B
Plaintext
dnl #
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dnl # 2.6.x API change
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_RQ_IS_SYNC], [
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AC_MSG_CHECKING([whether rq_is_sync() is available])
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tmp_flags="$EXTRA_KCFLAGS"
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EXTRA_KCFLAGS="-Wno-unused-but-set-variable"
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ZFS_LINUX_TRY_COMPILE([
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#include <linux/blkdev.h>
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],[
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struct request *req = NULL;
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(void) rq_is_sync(req);
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],[
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_RQ_IS_SYNC, 1,
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[rq_is_sync() is available])
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],[
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AC_MSG_RESULT(no)
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])
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EXTRA_KCFLAGS="$tmp_flags"
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])
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