1 files changed, 60 insertions, 0 deletions
diff --git a/include/compat/time.h b/include/compat/time.h
new file mode 100644
index 0000000..540807d
--- /dev/null
+++ b/include/compat/time.h
@@ -0,0 +1,60 @@
+/*
+ * Public domain
+ * sys/time.h compatibility shim
+ */
+
+#ifdef _MSC_VER
+#if _MSC_VER >= 1900
+#include <../ucrt/time.h>
+#else
+#include <../include/time.h>
+#endif
+#else
+#include_next <time.h>
+#endif
+
+#ifndef LIBCRYPTOCOMPAT_TIME_H
+#define LIBCRYPTOCOMPAT_TIME_H
+
+#ifdef _WIN32
+struct tm *__gmtime_r(const time_t * t, struct tm * tm);
+#define gmtime_r(tp, tm) __gmtime_r(tp, tm)
+#endif
+
+#ifndef HAVE_TIMEGM
+time_t timegm(struct tm *tm);
+#endif
+
+#ifndef CLOCK_MONOTONIC
+#define CLOCK_MONOTONIC CLOCK_REALTIME
+#endif
+
+#ifndef CLOCK_REALTIME
+#define CLOCK_REALTIME 0
+#endif
+
+#ifndef _WIN32
+#ifndef HAVE_CLOCK_GETTIME
+typedef int clockid_t;
+int clock_gettime(clockid_t clock_id, struct timespec *tp);
+#endif
+
+#ifdef timespecsub
+#define HAVE_TIMESPECSUB
+#endif
+
+#ifndef HAVE_TIMESPECSUB
+#define timespecsub(tsp, usp, vsp)                                      \
+        do {                                                            \
+                (vsp)->tv_sec = (tsp)->tv_sec - (usp)->tv_sec;          \
+                (vsp)->tv_nsec = (tsp)->tv_nsec - (usp)->tv_nsec;       \
+                if ((vsp)->tv_nsec < 0) {                               \
+                        (vsp)->tv_sec--;                                \
+                        (vsp)->tv_nsec += 1000000000L;                  \
+                }                                                       \
+        } while (0)
+#endif
+
+#endif
+
+#endif