| [444] | 1 | dnl @synopsis GCC_AC_ENABLE_DECIMAL_FLOAT([target triplet]) |
|---|
| 2 | dnl |
|---|
| 3 | dnl Enable C extension for decimal float if target supports it. |
|---|
| 4 | dnl |
|---|
| 5 | dnl @author Andreas Krebbel <Andreas.Krebbel@de.ibm.com> |
|---|
| 6 | |
|---|
| 7 | AC_DEFUN([GCC_AC_ENABLE_DECIMAL_FLOAT], |
|---|
| 8 | [ |
|---|
| 9 | AC_ARG_ENABLE(decimal-float, |
|---|
| 10 | [ --enable-decimal-float={no,yes,bid,dpd} |
|---|
| 11 | enable decimal float extension to C. Selecting 'bid' |
|---|
| 12 | or 'dpd' choses which decimal floating point format |
|---|
| 13 | to use], |
|---|
| 14 | [ |
|---|
| 15 | case $enable_decimal_float in |
|---|
| 16 | yes | no | bid | dpd) default_decimal_float=$enable_decimal_float ;; |
|---|
| 17 | *) AC_MSG_ERROR(['$enable_decimal_float' is an invalid value for --enable-decimal-float. |
|---|
| 18 | Valid choices are 'yes', 'bid', 'dpd', and 'no'.]) ;; |
|---|
| 19 | esac |
|---|
| 20 | ], |
|---|
| 21 | [ |
|---|
| 22 | case $1 in |
|---|
| 23 | powerpc*-*-linux* | i?86*-*-linux* | x86_64*-*-linux* | s390*-*-linux* | \ |
|---|
| 24 | i?86*-*-elfiamcu | i?86*-*-gnu* | \ |
|---|
| 25 | i?86*-*-mingw* | x86_64*-*-mingw* | \ |
|---|
| 26 | i?86*-*-cygwin* | x86_64*-*-cygwin*) |
|---|
| 27 | enable_decimal_float=yes |
|---|
| 28 | ;; |
|---|
| 29 | *) |
|---|
| 30 | AC_MSG_WARN([decimal float is not supported for this target, ignored]) |
|---|
| 31 | enable_decimal_float=no |
|---|
| 32 | ;; |
|---|
| 33 | esac |
|---|
| 34 | ]) |
|---|
| 35 | |
|---|
| 36 | # x86's use BID format instead of DPD |
|---|
| 37 | case x$enable_decimal_float in |
|---|
| 38 | xyes) |
|---|
| 39 | case $1 in |
|---|
| 40 | i?86*-*-* | x86_64*-*-*) |
|---|
| 41 | enable_decimal_float=bid |
|---|
| 42 | ;; |
|---|
| 43 | *) |
|---|
| 44 | enable_decimal_float=dpd |
|---|
| 45 | ;; |
|---|
| 46 | esac |
|---|
| 47 | default_decimal_float=$enable_decimal_float |
|---|
| 48 | ;; |
|---|
| 49 | xno) |
|---|
| 50 | # ENABLE_DECIMAL_FLOAT is set to 0. But we have to have proper |
|---|
| 51 | # dependency on libdecnumber. |
|---|
| 52 | default_decimal_float=dpd |
|---|
| 53 | ;; |
|---|
| 54 | esac |
|---|
| 55 | AC_SUBST(enable_decimal_float) |
|---|
| 56 | |
|---|
| 57 | ]) |
|---|
