------- Comment #9 from howarth at nitro dot med dot uc dot edu 2010-09-04
02:09 -------
To make clearer the subtleties being lost in a single dfp.m4 file, here are the
diffs of the lines replaced out of configure.ac from each location (gcc, libgcc
and libdecnumber).
--- gcc 2010-09-03 22:04:53.000000000 -0400
+++ libgcc 2010-09-03 22:01:16.000000000 -0400
@@ -11,34 +11,26 @@
esac
],
[
- case $target in
+ case $host in
powerpc*-*-linux* | i?86*-*-linux* | x86_64*-*-linux*)
enable_decimal_float=yes
;;
*)
- AC_MSG_WARN(decimal float is not supported for this target, ignored)
enable_decimal_float=no
;;
esac
])
+
# x86's use BID format instead of DPD
-case x$enable_decimal_float in
- xyes)
- case $target in
- i?86*-*-linux* | x86_64*-*-linux*)
- enable_decimal_float=bid
- ;;
- *)
- enable_decimal_float=dpd
- ;;
- esac
- ;;
- xno)
- # ENABLE_DECIMAL_FLOAT is set to 0. But we have to have proper
- # dependency on libdecnumber.
- enable_decimal_float=dpd
- ;;
-esac
+if test x$enable_decimal_float = xyes; then
+ case $host in
+ i?86*-*-linux* | x86_64*-*-linux*)
+ enable_decimal_float=bid
+ ;;
+ *)
+ enable_decimal_float=dpd
+ ;;
+ esac
+fi
AC_SUBST(enable_decimal_float)
-
--- gcc 2010-09-03 22:04:53.000000000 -0400
+++ libdecnumber 2010-09-03 21:59:43.000000000 -0400
@@ -1,3 +1,6 @@
+# Default decimal format
+# If you change the defaults here, be sure to change them in the GCC directory
also
+AC_MSG_CHECKING([for decimal floating point])
AC_ARG_ENABLE(decimal-float,
[ --enable-decimal-float={no,yes,bid,dpd}
enable decimal float extension to C. Selecting 'bid'
@@ -16,29 +19,22 @@
enable_decimal_float=yes
;;
*)
- AC_MSG_WARN(decimal float is not supported for this target, ignored)
enable_decimal_float=no
;;
esac
])
-# x86's use BID format instead of DPD
-case x$enable_decimal_float in
- xyes)
- case $target in
- i?86*-*-linux* | x86_64*-*-linux*)
- enable_decimal_float=bid
- ;;
- *)
- enable_decimal_float=dpd
- ;;
- esac
- ;;
- xno)
- # ENABLE_DECIMAL_FLOAT is set to 0. But we have to have proper
- # dependency on libdecnumber.
- enable_decimal_float=dpd
- ;;
-esac
-AC_SUBST(enable_decimal_float)
+# x86's use BID format instead of DPD
+# In theory --enable-decimal-float=no should not compile anything
+# For the sake of simplicity, just use the default format in this directory
+if test x$enable_decimal_float = xyes -o x$enable_decimal_float = xno; then
+ case $target in
+ i?86*-*-linux* | x86_64*-*-linux*)
+ enable_decimal_float=bid
+ ;;
+ *)
+ enable_decimal_float=dpd
+ ;;
+ esac
+fi
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45524
