small tweaks for windows building

1 files changed, 69 insertions, 0 deletions

diff --git a/cmake/msvc/sys/time.h b/cmake/msvc/sys/time.h
new file mode 100644
index 000000000..998b5d7bb
--- /dev/null
+++ b/cmake/msvc/sys/time.h
@@ -0,0 +1,69 @@
+#ifndef _MSC_VER // [
+#error "Use this header only with Microsoft Visual C++ compilers!"
+#endif // _MSC_VER ]
+
+#ifndef _MSC_SYS_TIME_H_
+#define _MSC_SYS_TIME_H_
+
+//http://social.msdn.microsoft.com/Forums/en/vcgeneral/thread/430449b3-f6dd-4e18-84de-eebd26a8d668
+#include < time.h >
+#include <windows.h> //I've ommited this line.
+#if defined(_MSC_VER) || defined(_MSC_EXTENSIONS)
+  #define DELTA_EPOCH_IN_MICROSECS  11644473600000000Ui64
+#else
+  #define DELTA_EPOCH_IN_MICROSECS  11644473600000000ULL
+#endif
+
+struct timespec {
+
+time_t tv_sec; /* Seconds since 00:00:00 GMT, */
+
+/* 1 January 1970 */
+
+long tv_nsec; /* Additional nanoseconds since */
+
+/* tv_sec */
+
+};
+
+struct timezone 
+{
+  int  tz_minuteswest; /* minutes W of Greenwich */
+  int  tz_dsttime;     /* type of dst correction */
+};
+ 
+static inline int gettimeofday(struct timeval *tv, struct timezone *tz)
+{
+  FILETIME ft;
+  unsigned __int64 tmpres = 0;
+  static int tzflag;
+ 
+  if (NULL != tv)
+  {
+    GetSystemTimeAsFileTime(&ft);
+ 
+    tmpres |= ft.dwHighDateTime;
+    tmpres <<= 32;
+    tmpres |= ft.dwLowDateTime;
+ 
+    /*converting file time to unix epoch*/
+    tmpres -= DELTA_EPOCH_IN_MICROSECS; 
+    tv->tv_sec = (long)(tmpres / 1000000UL);
+    tv->tv_usec = (long)(tmpres % 1000000UL);
+  }
+ 
+  if (NULL != tz)
+  {
+    if (!tzflag)
+    {
+      _tzset();
+      tzflag++;
+    }
+    tz->tz_minuteswest = _timezone / 60;
+    tz->tz_dsttime = _daylight;
+  }
+ 
+  return 0;
+}
+
+#endif //_MSC_SYS_TIME_H_