Windows compatibility fixes

VS2013 has trouble with relative include paths for apps/openssl, so move
certhash_win/apps_win.c back to apps/openssl.

gmtime_r on mingw64 fails with negative time_t, override

gmtime_s fails all of the time unit tests, override

SHUT_RD/WR are defined in newer mingw64 headers, check before overriding

1 files changed, 12 insertions, 0 deletions

diff --git a/crypto/compat/timegm.c b/crypto/compat/timegm.c
index 0655ce0..5a9e600 100644
--- a/crypto/compat/timegm.c
+++ b/crypto/compat/timegm.c
@@ -188,6 +188,18 @@ static int __secs_to_tm(long long t, struct tm *tm)
         return 0;
 }
 
+#ifdef _WIN32
+struct tm *__gmtime_r(const time_t *t, struct tm *tm)
+{
+        if (__secs_to_tm(*t, tm) < 0) {
+                errno = EOVERFLOW;
+                return 0;
+        }
+        tm->tm_isdst = 0;
+        return tm;
+}
+#endif
+
 time_t timegm(struct tm *tm)
 {
         struct tm new;