From: Johannes Schindelin <johannes.schindelin@xxxxxx> We cannot rely on `uname -m` in Git for Windows' SDK to tell us what architecture we are compiling for, as we can compile both 32-bit and 64-bit `git.exe` from a 64-bit SDK, but the `uname -m` in that SDK will always report `x86_64`. So let's go back to our original design. And make it explicitly Windows-specific. Signed-off-by: Johannes Schindelin <johannes.schindelin@xxxxxx> --- compat/mingw.h | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/compat/mingw.h b/compat/mingw.h index 30d9fb3e36..98407744f2 100644 --- a/compat/mingw.h +++ b/compat/mingw.h @@ -6,6 +6,25 @@ typedef _sigset_t sigset_t; #include <winsock2.h> #include <ws2tcpip.h> +#ifdef __MINGW64_VERSION_MAJOR +/* + * In Git for Windows, we cannot rely on `uname -m` to report the correct + * architecture: /usr/bin/uname.exe will report the architecture with which the + * current MSYS2 runtime was built, not the architecture for which we are + * currently compiling (both 32-bit and 64-bit `git.exe` is built in the 64-bit + * Git for Windows SDK). + */ +#undef GIT_HOST_CPU +/* This was figured out by looking at `cpp -dM </dev/null`'s output */ +#if defined(__x86_64__) +#define GIT_HOST_CPU "x86_64" +#elif defined(__i686__) +#define GIT_HOST_CPU "i686" +#else +#error "Unknown architecture" +#endif +#endif + /* MinGW-w64 reports to have flockfile, but it does not actually have it. */ #ifdef __MINGW64_VERSION_MAJOR #undef _POSIX_THREAD_SAFE_FUNCTIONS -- gitgitgadget
