Fix windows builds

app/actions.cpp

@@ -59,7 +59,8 @@
 #ifdef EXV_HAVE_UNISTD_H
 # include <unistd.h>                    // for stat()
 #endif
-#ifdef _MSC_VER
+
+#if defined(_WIN32) || defined(__CYGWIN__)
 # include <sys/utime.h>
 #include <Windows.h>
 #include <fcntl.h>

app/exiv2.cpp

@@ -39,7 +39,7 @@
 #include <cctype>
 #include <regex>
 
-#if defined(_MSC_VER)
+#if defined(_WIN32) || defined(__CYGWIN__)
 #include <Windows.h>
 #include <fcntl.h>
 #include <io.h>

src/convert.cpp

@@ -712,7 +712,7 @@ namespace Exiv2 {
               return;
         std::ostringstream value;
         for (size_t i = 0; i < pos->count(); ++i) {
-            value << static_cast<char>(pos->toInt64(i));
+            value << static_cast<char>(pos->toInt64(static_cast<long>(i)));
         }
         (*xmpData_)[to] = value.str();
         if (erase_) exifData_->erase(pos);

src/exif.cpp

@@ -869,7 +869,7 @@ namespace {
     {
         int64_t sum = 0;
         for (size_t i = 0; i < md.count(); ++i) {
-            sum += md.toInt64(i);
+            sum += md.toInt64(static_cast<long>(i));
         }
         return sum;
     }

src/xmp.cpp

@@ -953,8 +953,8 @@ namespace Exiv2 {
                 meta.SetProperty(ns.c_str(), i.tagName().c_str(), nullptr, options);
                 for (size_t idx = 0; idx < i.count(); ++idx) {
                     const std::string item = i.tagName() + "[" + toString(idx + 1) + "]";
-                    printNode(ns, item, i.toString(idx), 0);
-                    meta.SetProperty(ns.c_str(), item.c_str(), i.toString(idx).c_str());
+                    printNode(ns, item, i.toString(static_cast<long>(idx)), 0);
+                    meta.SetProperty(ns.c_str(), item.c_str(), i.toString(static_cast<long>(idx)).c_str());
                 }
                 continue;
             }