diff --git a/libs/fst/00_PATCH_win_io.patch b/libs/fst/00_PATCH_win_io.patch
index 5813758cd25..ac97f8f9b21 100644
--- a/libs/fst/00_PATCH_win_io.patch
+++ b/libs/fst/00_PATCH_win_io.patch
@@ -9,3 +9,42 @@
  #include <io.h>
  #else
  #include <sys/io.h>
+--- fstapi.cc
++++ fstapi.cc
+@@ -56,7 +56,7 @@
+ #include <pthread.h>
+ #endif
+ 
+-#ifdef __MINGW32__
++#if defined __CYGWIN__ || defined __MINGW32__ || defined _MSC_VER
+ #define WIN32_LEAN_AND_MEAN
+ #include <windows.h>
+ #endif
+@@ -159,7 +159,7 @@ void **JenkinsIns(void *base_i, const unsigned char *mem, uint32_t length, uint3
+ /***                 ***/
+ /***********************/
+ 
+-#ifdef __MINGW32__
++#if defined(__MINGW32__) || defined(_MSC_VER)
+ #include <io.h>
+ #ifndef HAVE_FSEEKO
+ #define ftello _ftelli64
+@@ -341,7 +341,7 @@ return(NULL);
+ /*
+  * mmap compatibility
+  */
+-#if defined __MINGW32__
++#if defined __CYGWIN__ || defined __MINGW32__ || defined _MSC_VER
+ #include <limits.h>
+ #define fstMmap(__addr,__len,__prot,__flags,__fd,__off) fstMmap2((__len), (__fd), (__off))
+ #define fstMunmap(__addr,__len)                         UnmapViewOfFile((LPCVOID)__addr)
+@@ -993,7 +993,7 @@ if(pnt == NULL
+   )
+ 	{
+ 	fprintf(stderr, "fstMmap() assigned to %s failed: errno: %d, file %s, line %d.\n", usage, errno, file, line);
+-#if !defined(__MINGW32__)
++#if !defined(__CYGWIN__) && !defined(__MINGW32__) && !defined(_MSC_VER)
+ 	perror("Why");
+ #else
+ 	LPSTR mbuf = NULL;
+
diff --git a/libs/fst/fstapi.cc b/libs/fst/fstapi.cc
index 3b0b352337b..f85059e8c0d 100644
--- a/libs/fst/fstapi.cc
+++ b/libs/fst/fstapi.cc
@@ -56,7 +56,7 @@
 #include <pthread.h>
 #endif
 
-#ifdef __MINGW32__
+#if defined __CYGWIN__ || defined __MINGW32__ || defined _MSC_VER
 #define WIN32_LEAN_AND_MEAN
 #include <windows.h>
 #endif
@@ -159,7 +159,7 @@ void **JenkinsIns(void *base_i, const unsigned char *mem, uint32_t length, uint3
 /***                 ***/
 /***********************/
 
-#ifdef __MINGW32__
+#if defined(__MINGW32__) || defined(_MSC_VER)
 #include <io.h>
 #ifndef HAVE_FSEEKO
 #define ftello _ftelli64
@@ -341,7 +341,7 @@ return(NULL);
 /*
  * mmap compatibility
  */
-#if defined __MINGW32__
+#if defined __CYGWIN__ || defined __MINGW32__ || defined _MSC_VER
 #include <limits.h>
 #define fstMmap(__addr,__len,__prot,__flags,__fd,__off) fstMmap2((__len), (__fd), (__off))
 #define fstMunmap(__addr,__len)                         UnmapViewOfFile((LPCVOID)__addr)
@@ -993,7 +993,7 @@ if(pnt == NULL
   )
 	{
 	fprintf(stderr, "fstMmap() assigned to %s failed: errno: %d, file %s, line %d.\n", usage, errno, file, line);
-#if !defined(__MINGW32__)
+#if !defined(__CYGWIN__) && !defined(__MINGW32__) && !defined(_MSC_VER)
 	perror("Why");
 #else
 	LPSTR mbuf = NULL;