Add _LIBCPP_ABI_[ITANIUM|MICROSOFT] macros.
This patch adds a libc++ configuration macro for the ABI we
are targeting, either Itanium or Microsoft. For now we configure
for the Microsoft ABI when on Windows with a compiler that defines
_MSC_VER. However this is only temporary until Clang implements
builtin macros we can use.
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@291329 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/__config b/include/__config
index a05bd92..b0e585f 100644
--- a/include/__config
+++ b/include/__config
@@ -111,6 +111,15 @@
#define _LIBCPP_COMPILER_IBM
#endif
+// FIXME: ABI detection should be done via compiler builtin macros. This
+// is just a placeholder until Clang implements such macros. For now assume
+// that Windows compilers pretending to be MSVC++ target the microsoft ABI.
+#if defined(_WIN32) && defined(_MSC_VER)
+# define _LIBCPP_ABI_MICROSOFT
+#else
+# define _LIBCPP_ABI_ITANIUM
+#endif
+
// Need to detect which libc we're using if we're on Linux.
#if defined(__linux__)
#include <features.h>