From fdf9345d5de1c951603e5da3ee8454e9efe2dc28 Mon Sep 17 00:00:00 2001
From: skal <pascal.massimino@gmail.com>
Date: Wed, 11 Feb 2026 08:19:05 +0100
Subject: refactor: Modularize CMake build system into 10 specialized modules
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Refactor monolithic 866-line CMakeLists.txt into 54-line orchestrator + 10 modules:
- DemoOptions.cmake - Build option declarations
- DemoConfig.cmake - Option implications and platform detection
- DemoCommon.cmake - Shared macros (conditional sources, size opts, linking)
- DemoDependencies.cmake - External library discovery (WGPU, GLFW)
- DemoSourceLists.cmake - Conditional source file lists
- DemoLibraries.cmake - Subsystem library targets
- DemoTools.cmake - Build tools (asset_packer, compilers)
- DemoCodegen.cmake - Code generation (assets, timeline, music)
- DemoExecutables.cmake - Main binaries (demo64k, test_demo)
- DemoTests.cmake - Test infrastructure (36 tests)
- Validation.cmake - Uniform buffer validation

Benefits:
- 94% reduction in main file size (866 → 54 lines)
- Conditional module inclusion (tests only parsed if DEMO_BUILD_TESTS=ON)
- Shared macros eliminate 200+ lines of repetition
- Clear separation of concerns

All 36 tests passing. All build modes verified.

Documentation: Created doc/CMAKE_MODULES.md with module architecture.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
---
 cmake/DemoDependencies.cmake | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100644 cmake/DemoDependencies.cmake

(limited to 'cmake/DemoDependencies.cmake')

diff --git a/cmake/DemoDependencies.cmake b/cmake/DemoDependencies.cmake
new file mode 100644
index 0000000..daac571
--- /dev/null
+++ b/cmake/DemoDependencies.cmake
@@ -0,0 +1,33 @@
+# External Dependencies and Includes
+# Finds and configures external libraries (WGPU, GLFW, platform libs)
+
+set(CORE_INCLUDES src third_party)
+
+if(DEMO_CROSS_COMPILE_WIN32)
+    add_definitions(-DDEMO_CROSS_COMPILE_WIN32)
+    set(WINDOWS_DEPS_DIR "${CMAKE_CURRENT_SOURCE_DIR}/third_party/windows")
+    set(WGPU_INCLUDE_DIR "${WINDOWS_DEPS_DIR}/include")
+    set(WGPU_LIBRARY "${WINDOWS_DEPS_DIR}/lib/libwgpu_native.dll.a")
+    set(GLFW3_INCLUDE_DIR "${WINDOWS_DEPS_DIR}/include")
+    set(GLFW3_LIBRARY "${WINDOWS_DEPS_DIR}/lib/libglfw3.a")
+
+    list(APPEND CORE_INCLUDES ${WGPU_INCLUDE_DIR} ${WGPU_INCLUDE_DIR}/webgpu ${GLFW3_INCLUDE_DIR})
+    set(DEMO_LIBS ${GLFW3_LIBRARY} ${WGPU_LIBRARY} -lgdi32 -lws2_32 -luser32 -lkernel32 -lshell32 -ladvapi32 -ldwmapi)
+    set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -static-libgcc -static-libstdc++")
+else()
+    find_library(WGPU_LIBRARY NAMES wgpu_native libwgpu_native REQUIRED)
+    find_path(WGPU_ROOT_INCLUDE_DIR NAMES wgpu.h REQUIRED)
+    list(APPEND CORE_INCLUDES ${WGPU_ROOT_INCLUDE_DIR} ${WGPU_ROOT_INCLUDE_DIR}/webgpu-headers)
+    find_package(glfw3 REQUIRED)
+    set(DEMO_LIBS glfw ${WGPU_LIBRARY})
+endif()
+
+list(APPEND CORE_INCLUDES third_party/glfw3webgpu)
+include_directories(${CORE_INCLUDES})
+
+if(APPLE)
+    set_source_files_properties(src/platform/platform.cc third_party/glfw3webgpu/glfw3webgpu.c PROPERTIES COMPILE_FLAGS "-x objective-c++")
+    list(APPEND DEMO_LIBS "-framework Metal" "-framework Foundation" "-framework Cocoa" "-framework QuartzCore")
+elseif(NOT DEMO_CROSS_COMPILE_WIN32)
+    list(APPEND DEMO_LIBS pthread m dl)
+endif()
-- 
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