Gisle Vanem asked: > Just curious, which Windows compiler has '__WIN32__' > as a built-in, but not '_WIN32'?
Borland C++, according to <https://sourceforge.net/p/predef/wiki/OperatingSystems/>. When we began gnulib development, Borland C++ was still a reasonable portability target to keep in mind. Probably this is no longer the case? Can you check all "reasonable" C compilers for Windows whether they define '_WIN32'? Bruno
