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 (a] 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 $1 in 23 powerpc*-*-linux* | i?86*-*-linux* | x86_64*-*-linux* | s390*-*-linux* | \ 24 i?86*-*-gnu* | \ 25 i?86*-*-mingw* | x86_64*-*-mingw* | \ 26 i?86*-*-cygwin* | x86_64*-*-cygwin*) 27 enable_decimal_float=yes 28 ;; 29 *) 30 AC_MSG_WARN([decimal float is not supported for this target, ignored]) 31 enable_decimal_float=no 32 ;; 33 esac 34 ]) 35 36 # x86's use BID format instead of DPD 37 case x$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 ]) 58
