clang: Pair -Qn with -Qunused-arguments.
When assembling module wirh clang -Qn ends up on command line but later ignored To avoid it breaking the compile, add -Qunused-arguments. Signed-off-by: Vladimir Serbinenko <phcoder@google.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
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@ -1228,12 +1228,12 @@ if test "x$target_cpu" = xarm; then
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fi
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AC_CACHE_CHECK([whether option -Qn works], grub_cv_target_cc_qn, [
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CFLAGS="$TARGET_CFLAGS -Qn -Werror"
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CFLAGS="$TARGET_CFLAGS -Qn -Qunused-arguments -Werror"
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
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[grub_cv_target_cc_qn=yes],
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[grub_cv_target_cc_qn=no])])
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if test "x$grub_cv_target_cc_qn" = xyes; then
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TARGET_CFLAGS="$TARGET_CFLAGS -Qn"
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TARGET_CFLAGS="$TARGET_CFLAGS -Qn -Qunused-arguments"
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fi
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#
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