>There's only one Unix now? Not quite that, but there are certainly a lot fewer with notable amounts of use. Which means, in turn, fewer compilers with unique

>There's only one Unix now? Not quite that, but there are certainly a lot fewer with notable amounts of use. Which means, in turn, fewer compilers with unique flags...you can get away with supporting just gcc/clang. And there are fewer machines that are big endian, or have unusual byte alignment, or have a buggy built-in malloc, or don't have off_t defined, or have unusual flags to link to pthreads. And so on...all the stuff things like Configure test for.