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