Alexander Neundorf wrote:
On Friday 13 June 2008 15:17:54 you wrote:
Bernd Petrovitsch wrote:
Actually the size of ints (or any other type) can be easily deduced
without running a (for the target) compiled binary:
- compile the binary (for the target) with an initialized variable with
that value.
- use cross nm (or a similar tool) to read it from there.
Or the method autoconf uses - binary search, using a compile-time
numeric comparison which resolves to a successful or failed compile.
How does it do that compile-time numeric comparison ?
for example you could do
int test[my comparaison];
if my comparaison < 0, the compilation should abort.
Matthieu
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