> Warp wrote:
>>   Autoconf also exists because computer architectures are different.
>> For instance, some architectures may be little-endian while others are
>> big-endian. Some architectures may be 32-bit while others are 64-bit.
> 
> Shouldn't the compiler be dealing with those issues?

No. If the compiler "dealt" with little endian and big endian, by making 
the C code always see one or the other, it would make the other 
architecture much slower.

Also, the C standard only mentions minimum sizes for data types. A 
compliant C implementation may have 64-bit bytes if it wants to.

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