this might work for libxm

CMakeLists.txt

@@ -1,5 +1,5 @@
-cmake_minimum_required(VERSION 3.30)
+cmake_minimum_required(VERSION 3.27)
-project(anm2ed CXX)
+project(anm2ed C CXX)
 
 if (WIN32 AND DEFINED ENV{VCPKG_ROOT} AND NOT DEFINED CMAKE_TOOLCHAIN_FILE)
     set(CMAKE_TOOLCHAIN_FILE "$ENV{VCPKG_ROOT}/scripts/buildsystems/vcpkg.cmake"

src/imgui/taskbar.cpp

@@ -9,6 +9,16 @@
 #include <vector>
 
 #include <imgui/imgui.h>
+
+#ifdef _MSC_VER
+  #ifndef __attribute__
+    #define __attribute__(x)
+  #endif
+  #ifndef restrict
+    #define restrict __restrict
+  #endif
+#endif
+
 #include <xm.h>
 
 #include "math_.h"

src/resource/audio.cpp

@@ -6,6 +6,16 @@
 #include <memory>
 #include <utility>
 #include <vector>
+
+#ifdef _MSC_VER
+  #ifndef __attribute__
+    #define __attribute__(x)
+  #endif
+  #ifndef restrict
+    #define restrict __restrict
+  #endif
+#endif
+
 #include <xm.h>
 
 namespace anm2ed::resource