fix(win): build with MinGW-w64 and on case-sensitive filesystems

Client/CMakeLists.txt

@@ -84,7 +84,10 @@ if (LINUX)
 endif ()
 
 if (WIN32)
-    ADD_DEFINITIONS(-DUNICODE)
+    target_compile_definitions(SonyHeadphonesClient PRIVATE
+        UNICODE _UNICODE
+        NOMINMAX
+        WIN32_LEAN_AND_MEAN)
 
     target_sources(SonyHeadphonesClient
         PRIVATE windows/WindowsGUI.cpp
@@ -94,8 +97,11 @@ if (WIN32)
         imgui/backends/imgui_impl_win32.cpp
     )
 
+    # Non-MSVC toolchains have no #pragma comment(lib, ...), so name every import library here.
     target_link_libraries(SonyHeadphonesClient
-        PRIVATE d3d11
+        PRIVATE d3d11 dxgi d3dcompiler
+        ws2_32 rpcrt4 bthprops
+        dwmapi          # imgui_impl_win32.cpp
     )
 endif ()
 

Client/windows/WindowsBluetoothConnector.h

@@ -1,17 +1,25 @@
 #pragma once
-#include <stdio.h>
-#pragma comment(lib, "ws2_32.lib")
-#pragma comment(lib, "rpcrt4.lib")
-#pragma comment(lib, "Bthprops.lib")
+
+// winsock2.h must precede windows.h, which bluetoothapis.h pulls in.
 #include <winsock2.h>
 #include <ws2bth.h>
-#include <BluetoothAPIs.h>
-#include <iostream>
+// Lowercase: the MinGW-w64 headers are named this way, and so is the file on a
+// case-sensitive filesystem (cross-compiling from Linux).
+#include <bluetoothapis.h>
 #include <rpc.h>
-#include "IBluetoothConnector.h"
+
+#include <atomic>
 #include <string>
+
+#include "IBluetoothConnector.h"
 #include "ByteMagic.h"
-#include <atomic>
+
+// Only MSVC understands these; every other toolchain gets the libraries from CMake.
+#ifdef _MSC_VER
+#pragma comment(lib, "ws2_32.lib")
+#pragma comment(lib, "rpcrt4.lib")
+#pragma comment(lib, "bthprops.lib")
+#endif
 
 class WindowsBluetoothConnector final : public IBluetoothConnector
 {

Client/windows/WindowsGUI.h

@@ -18,7 +18,7 @@
 
 #include <string>
 
-#include "Windows.h"
+#include <windows.h>
 
 #include "CrossPlatformGUI.h"
 

Client/windows/main.cpp

@@ -1,4 +1,5 @@
 #include <stdio.h>
+#include <iostream>
 #include <memory>
 #include "WindowsBluetoothConnector.h"
 #include "CommandSerializer.h"