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Issue #1276509 is a duplicate of this issue.  I've just
submitted a patch to the python-dev list for this problem,
which I'll attach below (and expect Tracker to mangle):

Index: configure.in
===================================================================
--- configure.in	(revision 41772)
+++ configure.in	(working copy)
@@ -215,6 +215,17 @@
   
 fi
 
+# See the #define for Py_HUGE_VAL in pyport.h.
+case $ac_sys_system/$ac_sys_release in
+  SunOS/5.10)
+    # Solaris 10's /usr/include/iso/math_c99.h defines
HUGE_VAL as
+    # __builtin_huge_val, which causes problems when
defining Py_HUGE_VAL.
+    AC_DEFINE(Py_HUGE_VAL, HUGE,
+              Define to a positive double which represents
infinity)
+    ;;
+esac
+
+
 #
 # SGI compilers allow the specification of the both the ABI
and the
 # ISA on the command line.  Depending on the values of
these switches,