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