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-rw-r--r--gcc-4.8.1/config/dfp.m457
1 files changed, 57 insertions, 0 deletions
diff --git a/gcc-4.8.1/config/dfp.m4 b/gcc-4.8.1/config/dfp.m4
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+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 $1 in
+ powerpc*-*-linux* | i?86*-*-linux* | x86_64*-*-linux* | s390*-*-linux* | \
+ i?86*-*-gnu* | \
+ i?86*-*-mingw* | x86_64*-*-mingw* | \
+ i?86*-*-cygwin*)
+ enable_decimal_float=yes
+ ;;
+ *)
+ AC_MSG_WARN([decimal float is not supported for this target, ignored])
+ enable_decimal_float=no
+ ;;
+ esac
+])
+
+# x86's use BID format instead of DPD
+case x$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)
+
+])