[gambit-list] configure must use -fwrapv as a gcc option for building gambit
Bradley Lucier
lucier at math.purdue.edu
Fri Jun 3 15:50:28 EDT 2005
Here's the documentation for -fwrapv in gcc-4.0 in
http://gcc.gnu.org/onlinedocs/gcc-4.0.0/gcc/Code-Gen-Options.html#Code-
Gen-Options
-fwrapv
This option instructs the compiler to assume that signed arithmetic
overflow of addition, subtraction and multiplication wraps around using
twos-complement representation. This flag enables some optimizations
and disables other. This option is enabled by default for the Java
front-end, as required by the Java language specification.
Since we assume this of all processors, we need to enable this flag.
Brad
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