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authorJohannes Schindelin <johannes.schindelin@gmx.de>2019-02-07 10:46:06 (GMT)
committerJunio C Hamano <gitster@pobox.com>2019-02-07 21:05:37 (GMT)
commit3815f64b0dd983bdbf9242a0547706d5d81cb3e6 (patch)
tree249e7c2f424ef272c496e7afcf51ff377d71ad88 /compat
parent0d0ac3826a3bbb9247e39e12623bbcfdd722f24c (diff)
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mingw: fix CPU reporting in `git version --build-options`
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@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'compat')
-rw-r--r--compat/mingw.h19
1 files changed, 19 insertions, 0 deletions
diff --git a/compat/mingw.h b/compat/mingw.h
index 8c24dda..363f047 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