Check MINGW32 for duplicate type declaration.

include/freerdp/channels/rdpdr.h

@@ -298,6 +298,7 @@ enum FILE_FS_DEVICE_FLAG
 	FILE_DEVICE_SECURE_OPEN = 0x00000100
 };
 
+#ifndef __MINGW32__
 enum FILE_FS_INFORMATION_CLASS
 {
 	FileFsVolumeInformation = 1,
@@ -311,6 +312,7 @@ enum FILE_FS_INFORMATION_CLASS
 	FileFsDriverPathInformation,
 	FileFsMaximumInformation
 };
+#endif
 
 typedef struct _DEVICE DEVICE;
 typedef struct _IRP IRP;

include/freerdp/codec/audio.h

@@ -69,6 +69,7 @@ typedef struct AUDIO_FORMAT AUDIO_FORMAT;
  * http://tools.ietf.org/html/rfc2361
  */
 
+#ifndef __MINGW32__
 #define WAVE_FORMAT_UNKNOWN 0x0000
 
 #ifndef WAVE_FORMAT_PCM
@@ -183,6 +184,7 @@ typedef struct AUDIO_FORMAT AUDIO_FORMAT;
 #define WAVE_FORMAT_NORRIS 0x1400
 #define WAVE_FORMAT_SOUNDSPACE_MUSICOMPRESS 0x1500
 #define WAVE_FORMAT_DVM 0x2000
+#endif /* !__MINGW32__ */
 #define WAVE_FORMAT_AAC_MS 0xA106
 
 /**

include/freerdp/rail.h

@@ -246,7 +246,7 @@ enum SPI_MASK
 #define IME_STATE_OPEN 0x00000001
 
 /* ImeConvMode */
-#ifndef _IME_CMODES_
+#if !defined(_IME_CMODES_) && !defined(__MINGW32__)
 #define IME_CMODE_NATIVE 0x00000001
 #define IME_CMODE_KATAKANA 0x00000002
 #define IME_CMODE_FULLSHAPE 0x00000008

include/freerdp/server/rdpdr.h

@@ -35,6 +35,7 @@
 typedef struct _rdpdr_server_context RdpdrServerContext;
 typedef struct _rdpdr_server_private RdpdrServerPrivate;
 
+#ifndef __MINGW32__
 struct _FILE_DIRECTORY_INFORMATION
 {
 	UINT32 NextEntryOffset;
@@ -49,6 +50,7 @@ struct _FILE_DIRECTORY_INFORMATION
 	char FileName[512];
 };
 typedef struct _FILE_DIRECTORY_INFORMATION FILE_DIRECTORY_INFORMATION;
+#endif
 
 typedef UINT (*psRdpdrStart)(RdpdrServerContext* context);
 typedef UINT (*psRdpdrStop)(RdpdrServerContext* context);

server/Windows/wf_wasapi.c

@@ -18,6 +18,7 @@
 //#define REFTIMES_PER_SEC  50000
 //#define REFTIMES_PER_MILLISEC  50
 
+#ifndef __MINGW32__
 DEFINE_GUID(CLSID_MMDeviceEnumerator, 0xBCDE0395, 0xE52F, 0x467C, 0x8E, 0x3D, 0xC4, 0x57, 0x92,
             0x91, 0x69, 0x2E);
 DEFINE_GUID(IID_IMMDeviceEnumerator, 0xA95664D2, 0x9614, 0x4F35, 0xA7, 0x46, 0xDE, 0x8D, 0xB6, 0x36,
@@ -26,6 +27,7 @@ DEFINE_GUID(IID_IAudioClient, 0x1cb9ad4c, 0xdbfa, 0x4c32, 0xb1, 0x78, 0xc2, 0xf5
             0xb2);
 DEFINE_GUID(IID_IAudioCaptureClient, 0xc8adbd64, 0xe71e, 0x48a0, 0xa4, 0xde, 0x18, 0x5c, 0x39, 0x5c,
             0xd3, 0x17);
+#endif
 
 LPWSTR devStr = NULL;
 wfPeerContext* latestPeer = NULL;
@@ -162,7 +164,7 @@ int wf_wasapi_get_device_string(LPWSTR pattern, LPWSTR* deviceStr)
 	return 0;
 }
 
-static DWORD WINAPI wf_rdpsnd_wasapi_thread(LPVOID lpParam)
+DWORD WINAPI wf_rdpsnd_wasapi_thread(LPVOID lpParam)
 {
 	IMMDeviceEnumerator* pEnumerator = NULL;
 	IMMDevice* pDevice = NULL;

winpr/include/winpr/intrin.h

@@ -22,7 +22,7 @@
 #ifndef WINPR_INTRIN_H
 #define WINPR_INTRIN_H
 
-#ifndef _WIN32
+#if !defined(_WIN32) || defined(__MINGW32__)
 
 /**
  * __lzcnt16, __lzcnt, __lzcnt64:

winpr/include/winpr/nt.h

@@ -1267,7 +1267,7 @@ static INLINE NTSTATUS NTSTATUS_FROM_WIN32(long x)
 }
 #endif
 
-#ifdef _WIN32
+#if defined(_WIN32) && !defined(__MINGW32__)
 
 /**
  * winternl.h contains an incomplete definition of enum FILE_INFORMATION_CLASS
@@ -1288,8 +1288,11 @@ static INLINE NTSTATUS NTSTATUS_FROM_WIN32(long x)
 #undef _FILE_INFORMATION_CLASS
 #undef FileDirectoryInformation
 
+#elif defined(_WIN32)
+#include <winternl.h>
 #endif
 
+#ifndef __MINGW32__
 typedef enum _FILE_INFORMATION_CLASS
 {
 	FileDirectoryInformation = 1,
@@ -1333,6 +1336,7 @@ typedef enum _FILE_INFORMATION_CLASS
 	FileValidDataLengthInformation,
 	FileShortNameInformation
 } FILE_INFORMATION_CLASS;
+#endif /* !__MINGW32__ */
 
 #if !defined(_WIN32) || defined(_UWP)