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dnl -*- Autoconf -*-
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AC_DEFUN([RUBY_DEFAULT_ARCH], [
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AC_MSG_CHECKING([arch option])
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AS_CASE([$1],
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[arm64], [],
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[*64], [ARCH_FLAG=-m64],
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[[i[3-6]86]], [ARCH_FLAG=-m32],
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[AC_MSG_ERROR(unknown target architecture: $target_archs)]
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)
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AC_MSG_RESULT([$ARCH_FLAG])
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])dnl
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