--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/3rdparty/vmime/cmake/cmake-cxx11/Tests/Module/CXX11Features/cxx11features.cxx	Tue Aug 17 11:19:54 2021 +0200
@@ -0,0 +1,57 @@
+#if defined(HAS_CXX0X_CSTDINT_H)
+#include <cstdint>
+#endif
+
+#include <sys/types.h>
+
+struct thing {
+    unsigned char one;
+#if defined(HAS_CXX0X_CSTDINT_H)
+    uint32_t four;
+#endif
+#if defined(HAS_CXX0X_LONG_LONG)
+    long long eight;
+#endif
+};
+
+#include <stdio.h>
+
+int main()
+{
+#if defined (HAS_CXX0X_NULLPTR)
+    void *nix = nullptr;
+#else /* HAS_CXX0X_NULLPTR */
+    void *nix = 0;
+#endif /* HAS_CXX0X_NULLPTR */
+
+#if defined(HAS_CXX0X_STATIC_ASSERT)
+    static_assert(1 < 42, "Your C++ compiler is b0rked");
+#endif /* HAS_CXX0X_STATIC_ASSERT */
+
+#if defined(HAS_CXX0X_FUNC)
+    const char *funcname = __func__;
+    printf("the name of main() function is: %s\n", funcname);
+#endif /* HAS_CXX0X_FUNC */
+
+#if defined(HAS_CXX0X_SIZEOF_MEMBER)
+    size_t onesize = sizeof(thing::one);
+#if defined(HAS_CXX0X_STATIC_ASSERT)
+    static_assert(sizeof(thing::one) == 1, "Your char is not one byte long");
+#endif /* HAS_CXX0X_STATIC_ASSERT */
+
+#if defined(HAS_CXX0X_CSTDINT_H)
+    size_t foursize = sizeof(thing::four);
+#if defined(HAS_CXX0X_STATIC_ASSERT)
+    static_assert(sizeof(thing::four) == 4, "Your uint32_t is not 32 bit long");
+#endif /* HAS_CXX0X_STATIC_ASSERT */
+#endif /* HAS_CXX0X_CSTDINT_H */
+#if defined(HAS_CXX0X_LONG_LONG)
+    size_t eightsize = sizeof(thing::eight);
+#if defined(HAS_CXX0X_STATIC_ASSERT)
+    static_assert(sizeof(thing::eight) == 8, "Your long long is not 64 bit long");
+#endif /* HAS_CXX0X_STATIC_ASSERT */
+#endif /* HAS_CXX0X_LONG_LONG */
+#endif /* HAS_CXX0X_SIZEOF_MEMBER */
+
+    return 0;
+}