annotate config/dfp.m4 @ 158:494b0b89df80 default tip

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author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Mon, 25 May 2020 18:13:55 +0900
parents 84e7813d76e9
children
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561a7518be6b update gcc-4.6
Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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1 dnl @synopsis GCC_AC_ENABLE_DECIMAL_FLOAT([target triplet])
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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2 dnl
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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3 dnl Enable C extension for decimal float if target supports it.
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4 dnl
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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5 dnl @author Andreas Krebbel <Andreas.Krebbel@de.ibm.com>
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6
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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7 AC_DEFUN([GCC_AC_ENABLE_DECIMAL_FLOAT],
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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8 [
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9 AC_ARG_ENABLE(decimal-float,
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10 [ --enable-decimal-float={no,yes,bid,dpd}
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11 enable decimal float extension to C. Selecting 'bid'
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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12 or 'dpd' choses which decimal floating point format
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13 to use],
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14 [
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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15 case $enable_decimal_float in
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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16 yes | no | bid | dpd) default_decimal_float=$enable_decimal_float ;;
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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17 *) AC_MSG_ERROR(['$enable_decimal_float' is an invalid value for --enable-decimal-float.
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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18 Valid choices are 'yes', 'bid', 'dpd', and 'no'.]) ;;
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19 esac
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20 ],
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21 [
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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22 case $1 in
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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23 powerpc*-*-linux* | i?86*-*-linux* | x86_64*-*-linux* | s390*-*-linux* | \
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24 i?86*-*-elfiamcu | i?86*-*-gnu* | x86_64*-*-gnu* | \
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25 i?86*-*-mingw* | x86_64*-*-mingw* | \
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26 i?86*-*-cygwin* | x86_64*-*-cygwin*)
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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27 enable_decimal_float=yes
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28 ;;
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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29 *)
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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30 AC_MSG_WARN([decimal float is not supported for this target, ignored])
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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31 enable_decimal_float=no
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32 ;;
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33 esac
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34 ])
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35
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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36 # x86's use BID format instead of DPD
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37 case x$enable_decimal_float in
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38 xyes)
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39 case $1 in
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40 i?86*-*-* | x86_64*-*-*)
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41 enable_decimal_float=bid
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42 ;;
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43 *)
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44 enable_decimal_float=dpd
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45 ;;
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46 esac
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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47 default_decimal_float=$enable_decimal_float
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48 ;;
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49 xno)
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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50 # ENABLE_DECIMAL_FLOAT is set to 0. But we have to have proper
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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51 # dependency on libdecnumber.
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52 default_decimal_float=dpd
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53 ;;
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54 esac
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55 AC_SUBST(enable_decimal_float)
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56
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57 ])