On Sun, Mar 31, 2013 at 6:23 AM, LRN wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > 1) MS PSDK 7 includes winsock.h from windows.h only when compiling for MAC > winsock.h defines _WINSOCKAPI_, it is used as #include guard > > 2) mingw.org w32api includes winsock.h from windows.h only if WINVER < > 0x400 (it could be reflecting that older MS PSDK used to include > winsock.h, i wouldn't know) > _WINSOCKAPI_ is never ever mentioned in any system header
Actually, this is going to change. The winsock.h header is included from windows.h unless WIN32_LEAN_AND_MEAN is defined. The winsock2.h header will define _WINSOCK_H will prevent the redeclaration and redefinition of symbols. Winsock2.h as documented by MS should be included before windows.h. > 3) mingw-w64 headers include winsock.h from windows.h always, unless > WIN32_LEAN_AND_MEAN or __CYGWIN__ are defined (or __CYGWIN__ and > __USE_W32_SOCKETS are defined at the same time) > winsock.h defines _WINSOCKAPI_, it is used as #include guard > With the 4.0 release of mingw.org headers, so will they. > libxml2 defines _WINSOCKAPI_ in its configure script if it detects > mingw as the host platform > The application should not be defining this macro, it is the job of the winsock2.h header to protect against inclusion of winsock.h. Instead winsock2.h should be included before windows.h. > result: CHAOS > 1) for MS PSDK 7 it does practically nothing (unless it's MAC, in > which case it produces "_WINSOCKAPI_ redefined" warning) > > 2) for mingw.org w32api it does nothing (mingw.org doesn't use > _WINSOCKAPI_ macro at all) > Correct, _WINSOCKAPI_ is a vendor variable, and should not be defined by an application. > 3) for mingw-w64 it produces a warning "please include <winsock2.h> > before <windows.h>" As already stated, MS documents that winsock2.h should be included before windows.h. In fact you can include winsock2.h without including windows.h since winsock2.h will include it. -- Earnie -- https://sites.google.com/site/earnieboyd _______________________________________________ xml mailing list, project page http://xmlsoft.org/ xml@gnome.org https://mail.gnome.org/mailman/listinfo/xml
