1 files changed, 4 insertions, 4 deletions
diff --git a/e_os.h b/e_os.h
index aca01cdc64..95590a7cb2 100644
--- a/e_os.h
+++ b/e_os.h
@@ -108,11 +108,11 @@ extern "C" {
 #  define MS_STATIC
 #endif
 
-#if defined(_WIN32) && !defined(WIN32)
+#if defined(_WIN32) && !defined(WIN32) && !defined(__CYGWIN32__)
 #  define WIN32
 #endif
 
-#if defined(WIN32) || defined(WIN16)
+#if (defined(WIN32) || defined(WIN16)) && !defined(__CYGWIN32__)
 #  ifndef WINDOWS
 #    define WINDOWS
 #  endif
@@ -136,7 +136,7 @@ extern "C" {
 #define clear_sys_error()	errno=0
 #endif
 
-#ifdef WINDOWS
+#if defined(WINDOWS) && !defined(__CYGWIN32__)
 #define get_last_socket_error()	WSAGetLastError()
 #define clear_socket_error()	WSASetLastError(0)
 #define readsocket(s,b,n)	recv((s),(b),(n),0)
@@ -170,7 +170,7 @@ extern "C" {
 #  define NO_FP_API
 #endif
 
-#if defined(WINDOWS) || defined(MSDOS)
+#if (defined(WINDOWS) || defined(MSDOS)) && !defined(__CYGWIN32__)
 
 #  ifndef S_IFDIR
 #    define S_IFDIR	_S_IFDIR