Merge branch 'use-sh' of https://github.com/kariya-mitsuru/xbyak into kariya-mitsuru-use-sh
diff --git a/xbyak/xbyak.h b/xbyak/xbyak.h
index 4310455..481ec9b 100644
--- a/xbyak/xbyak.h
+++ b/xbyak/xbyak.h
@@ -108,7 +108,7 @@
#endif
#endif
-#if (__cplusplus >= 201103) || (_MSC_VER >= 1800)
+#if (__cplusplus >= 201103) || (defined(_MSC_VER) && _MSC_VER >= 1800)
#undef XBYAK_TLS
#define XBYAK_TLS thread_local
#define XBYAK_VARIADIC_TEMPLATE
@@ -117,7 +117,7 @@
#define XBYAK_NOEXCEPT throw()
#endif
-#if (__cplusplus >= 201402L) || (_MSC_VER >= 1910) // Visual Studio 2017 version 15.0
+#if (__cplusplus >= 201402L) || (defined(_MSC_VER) && _MSC_VER >= 1910) // Visual Studio 2017 version 15.0
#define XBYAK_CONSTEXPR constexpr // require c++14 or later
#else
#define XBYAK_CONSTEXPR