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