Kai Tietz wrote: > 2010/9/20 Earnie <ear...@users.sourceforge.net>: >> Cesar Strauss wrote: >>> >>> Since MSYS is derived from Cygwin, one way to get 64-bit support >>> for MSYS would be to add it first to Cygwin and port it to MSYS >>> later. However, as this thread indicates, there is currently some >>> interest on bringing 64-bit support to MSYS, while I do not have >>> evidence there is a similar interest on the Cygwin front. So, it >>> may make sense to do it the other way around this time (adding >>> 64-bit support to MSYS first and contributing back to Cygwin >>> later). >>> >> >> I suggest that it would make more sense "the other way around". >> Since MinGW GCC is used for parts of the Cygwin/MSYS build >> process, incorporation of mingw-64 into Cygwin/MSYS would also need >> to take place. >> >> Earnie > > Well, AFAIU this subject about porting msys (cygwin) to x64 requires > the following steps. > > 1.) Port the internal runtime-dll (sorry I am just knowing cygwin's > name here) cygwin1.dll. As this provides the syscalls required for > any later build. 2.) Port gcc/binutils to support the > x86_64-*-cygwin* target. This step shouldn't be too hard, but has for > sure some pitfalls 3.) Best in parallel to 2.) Porting newlib > beginning from headers. > > After that real fun begins as all unix tools need to be ported to > LLP64 ABI. >
>From what I recall newlib, the base of Cygwin's runtime, already contains the necessary IA64 runtime code. The Cygwin wrappers though would need to be modified to use it. And to self host a GCC that targets the new Cygwin runtime would need to be built but the initial work could be completed as a cross build from Linux. Earnie ------------------------------------------------------------------------------ Start uncovering the many advantages of virtual appliances and start using them to simplify application deployment and accelerate your shift to cloud computing. http://p.sf.net/sfu/novell-sfdev2dev _______________________________________________ Mingw-w64-public mailing list Mingw-w64-public@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mingw-w64-public
