On 7/31/2013 17:21, Baruch Burstein wrote:
> The latest version of config.guess, when run on MSYS2 64bit (posted
> elsewhere on this list) with ruben's 64bit native compilers reports:
> x86_64-pc-mingw32
>
> I recall somewhere that the correct triplet should be:
> x86_64-w64-mingw32
>
> The relevant part of config.guess seems to be this:
> *:MINGW64*:*)
> echo ${UNAME_MACHINE}-pc-mingw64
> exit ;;
> *:MINGW*:*)
> echo ${UNAME_MACHINE}-pc-mingw32
> exit ;;
> i*:MSYS*:*)
> echo ${UNAME_MACHINE}-pc-msys
> exit ;;
> i*:windows32*:*)
> # uname -m includes "-pc" on this system.
> echo ${UNAME_MACHINE}-mingw32
> exit ;;
>
> I don't understand how this triplet thingy works, but would like to know
> what the correct host triplet is for each of the following, and if a change
> is needed in the config.guess script:
> "regular" windows executables (32bit) e.g. WinXP
> "regular" windows executables (64bit) e.g. Win7(x64)
> Windows is a bit special in this regard, just because it is Windows doesn't mean that there is only one way to target it, as you have noticed that there is more than a single triplet that work on Windows. Also, the MSYS bit should not be there. > Does mingw* at the end of the triplet mean "regular" windows programs? What > is msys at the end of the triplet? What is the difference between mingw32and > mingw64 at the end of the triplet? > No, the names don't have any special meaning, it is a more specific way to select a compiler toolchain. This makes cross compilation possible, eg build on Linux for Windows. It is hard to do this if all compilers were just called "gcc". > And finally, can someone explain/point me to an explanation of how these > triplets actually work? Do they really make any difference, or are they > just used as the prefix for the compiler chosen? If I rename my compiler > and tools to "a-silly-long-prefix-gcc", "a-silly-long-prefix-g++", > "a-silly-long-prefix-ar" etc, would I have a problem compiling like this: > > ./configure --host=a-silly-long-prefix > make See https://sourceforge.net/apps/trac/mingw-w64/wiki/TypeTriplets
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