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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [config/] [dfp.m4] - Blame information for rev 731

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1 722 jeremybenn
dnl @synopsis GCC_AC_ENABLE_DECIMAL_FLOAT([target triplet])
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dnl
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dnl Enable C extension for decimal float if target supports it.
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dnl
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dnl @author Andreas Krebbel  <Andreas.Krebbel@de.ibm.com>
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AC_DEFUN([GCC_AC_ENABLE_DECIMAL_FLOAT],
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[
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AC_ARG_ENABLE(decimal-float,
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[  --enable-decimal-float={no,yes,bid,dpd}
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                        enable decimal float extension to C.  Selecting 'bid'
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                        or 'dpd' choses which decimal floating point format
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                        to use],
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[
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  case $enable_decimal_float in
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    yes | no | bid | dpd) default_decimal_float=$enable_decimal_float ;;
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    *) AC_MSG_ERROR(['$enable_decimal_float' is an invalid value for --enable-decimal-float.
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Valid choices are 'yes', 'bid', 'dpd', and 'no'.]) ;;
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  esac
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],
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[
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  case $1 in
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    powerpc*-*-linux* | i?86*-*-linux* | x86_64*-*-linux* | s390*-*-linux* | \
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    i?86*-*-mingw* | x86_64*-*-mingw* | \
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    i?86*-*-cygwin*)
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      enable_decimal_float=yes
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      ;;
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    *)
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      AC_MSG_WARN([decimal float is not supported for this target, ignored])
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      enable_decimal_float=no
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      ;;
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  esac
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])
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# x86's use BID format instead of DPD
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case x$enable_decimal_float in
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  xyes)
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    case $1 in
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      i?86*-*-* | x86_64*-*-*)
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        enable_decimal_float=bid
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        ;;
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      *)
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        enable_decimal_float=dpd
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        ;;
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    esac
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    default_decimal_float=$enable_decimal_float
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    ;;
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  xno)
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    # ENABLE_DECIMAL_FLOAT is set to 0. But we have to have proper
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    # dependency on libdecnumber.
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    default_decimal_float=dpd
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    ;;
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esac
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AC_SUBST(enable_decimal_float)
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])

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