+ // FIXME: why don't we have mode_t in lyx::mkdir prototype ??
+#if HAVE_MKDIR
+# if MKDIR_TAKES_ONE_ARG
+ // MinGW32
+ return ::mkdir(pathname.c_str());
+# else
+ // POSIX
+ return ::mkdir(pathname.c_str(), mode_t(mode));
+# endif
+#elif defined(_WIN32)
+ // plain Windows 32
+ return CreateDirectory(pathname.c_str(), 0) != 0 ? 0 : -1;
+#elif HAVE__MKDIR
+ return ::_mkdir(pathname.c_str());
+#else
+# error "Don't know how to create a directory on this system."
+#endif