From e3daca37aa134a6885c8ae5c508c3d7f7bfc600a Mon Sep 17 00:00:00 2001
From: skal <pascal.massimino@gmail.com>
Date: Sat, 31 Jan 2026 13:57:51 +0100
Subject: Add Windows cross-compilation support (MinGW) and emulation (Wine)

---
 CMakeLists.txt | 87 ++++++++++++++++++++++++++++++++++++++++++++--------------
 1 file changed, 67 insertions(+), 20 deletions(-)

(limited to 'CMakeLists.txt')

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 410ebc1..d25065c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -24,20 +24,58 @@ endif()
 set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
-# Find wgpu-native (system install)
-find_library(WGPU_LIBRARY NAMES wgpu_native libwgpu_native REQUIRED)
-find_path(WGPU_INCLUDE_DIR NAMES webgpu.h PATH_SUFFIXES webgpu-headers REQUIRED)
-
-include_directories(
-    src
-    third_party
-    ${WGPU_INCLUDE_DIR}
-    third_party/glfw3webgpu
-)
+if (DEMO_CROSS_COMPILE_WIN32)
+    # --- Windows Cross-Compilation Configuration ---
+    add_definitions(-DDEMO_CROSS_COMPILE_WIN32)
+    set(WINDOWS_DEPS_DIR "${CMAKE_CURRENT_SOURCE_DIR}/third_party/windows")
+
+    # WGPU-Native
+    # We use the headers from the fetched deps
+    set(WGPU_INCLUDE_DIR "${WINDOWS_DEPS_DIR}/include/webgpu")
+    # Link against the import library
+    set(WGPU_LIBRARY "${WINDOWS_DEPS_DIR}/lib/libwgpu_native.dll.a")
+
+    # GLFW 3.4
+    set(GLFW3_INCLUDE_DIR "${WINDOWS_DEPS_DIR}/include")
+    set(GLFW3_LIBRARY "${WINDOWS_DEPS_DIR}/lib/libglfw3.a")
+    
+    include_directories(
+        src
+        third_party
+        ${WGPU_INCLUDE_DIR}
+        ${GLFW3_INCLUDE_DIR}
+        third_party/glfw3webgpu
+    )
+
+    # Link libraries
+    # ws2_32 is winsock, required by some deps
+    set(DEMO_LIBS 
+        ${GLFW3_LIBRARY} 
+        ${WGPU_LIBRARY}
+        -lgdi32 -lws2_32 -luser32 -lkernel32 -lshell32 -ladvapi32 -ldwmapi
+    )
+
+    # Statically link C/C++ runtime to avoid needing extra DLLs
+    set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -static-libgcc -static-libstdc++")
+
+else()
+    # --- Native Build Configuration ---
+
+    # Find wgpu-native (system install)
+    find_library(WGPU_LIBRARY NAMES wgpu_native libwgpu_native REQUIRED)
+    find_path(WGPU_INCLUDE_DIR NAMES webgpu.h PATH_SUFFIXES webgpu-headers REQUIRED)
+
+    include_directories(
+        src
+        third_party
+        ${WGPU_INCLUDE_DIR}
+        third_party/glfw3webgpu
+    )
 
-find_package(glfw3 REQUIRED)
+    find_package(glfw3 REQUIRED)
 
-set(DEMO_LIBS glfw ${WGPU_LIBRARY})
+    set(DEMO_LIBS glfw ${WGPU_LIBRARY})
+endif()
 
 # Platform-specific dependencies
 if (APPLE)
@@ -52,15 +90,24 @@ if (APPLE)
         "-framework Cocoa"
         "-framework QuartzCore"
     )
+elseif (DEMO_CROSS_COMPILE_WIN32)
+    # Windows deps already handled above
 else()
     # Assume Linux/other POSIX-like systems might need these
     list(APPEND DEMO_LIBS pthread m dl)
 endif()
 
-# Asset Packing Tool (Always needed for build)
-add_executable(asset_packer
-    tools/asset_packer.cc
-)
+# Asset Packing Tool
+if (DEFINED ASSET_PACKER_PATH)
+    # Use externally provided tool (e.g., for cross-compilation)
+    set(ASSET_PACKER_CMD ${ASSET_PACKER_PATH})
+    set(ASSET_PACKER_DEPENDS ${ASSET_PACKER_PATH})
+else()
+    # Build tool as part of the project
+    add_executable(asset_packer tools/asset_packer.cc)
+    set(ASSET_PACKER_CMD $<TARGET_FILE:asset_packer>)
+    set(ASSET_PACKER_DEPENDS asset_packer)
+endif()
 
 # Configure DEMO asset generation
 set(DEMO_ASSETS_TXT_PATH ${CMAKE_CURRENT_SOURCE_DIR}/assets/final/demo_assets.txt)
@@ -70,8 +117,8 @@ set(GENERATED_DEMO_ASSETS_DATA_CC ${CMAKE_CURRENT_BINARY_DIR}/src/assets_data.cc
 add_custom_command(
     OUTPUT ${GENERATED_DEMO_ASSETS_H} ${GENERATED_DEMO_ASSETS_DATA_CC}
     COMMAND ${CMAKE_COMMAND} -E make_directory ${CMAKE_CURRENT_BINARY_DIR}/src
-    COMMAND $<TARGET_FILE:asset_packer> ${DEMO_ASSETS_TXT_PATH} ${GENERATED_DEMO_ASSETS_H} ${GENERATED_DEMO_ASSETS_DATA_CC}
-    DEPENDS asset_packer ${DEMO_ASSETS_TXT_PATH}
+    COMMAND ${ASSET_PACKER_CMD} ${DEMO_ASSETS_TXT_PATH} ${GENERATED_DEMO_ASSETS_H} ${GENERATED_DEMO_ASSETS_DATA_CC}
+    DEPENDS ${ASSET_PACKER_DEPENDS} ${DEMO_ASSETS_TXT_PATH}
     COMMENT "Generating demo assets.h and assets_data.cc"
 )
 
@@ -87,8 +134,8 @@ set(GENERATED_TEST_ASSETS_DATA_CC ${CMAKE_CURRENT_BINARY_DIR}/src/test_assets_da
 add_custom_command(
     OUTPUT ${GENERATED_TEST_ASSETS_H} ${GENERATED_TEST_ASSETS_DATA_CC}
     COMMAND ${CMAKE_COMMAND} -E make_directory ${CMAKE_CURRENT_BINARY_DIR}/src
-    COMMAND $<TARGET_FILE:asset_packer> ${TEST_ASSETS_TXT_PATH} ${GENERATED_TEST_ASSETS_H} ${GENERATED_TEST_ASSETS_DATA_CC}
-    DEPENDS asset_packer ${TEST_ASSETS_TXT_PATH}
+    COMMAND ${ASSET_PACKER_CMD} ${TEST_ASSETS_TXT_PATH} ${GENERATED_TEST_ASSETS_H} ${GENERATED_TEST_ASSETS_DATA_CC}
+    DEPENDS ${ASSET_PACKER_DEPENDS} ${TEST_ASSETS_TXT_PATH}
     COMMENT "Generating test assets.h and assets_data.cc"
 )
 
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