declutter top level CMakeLists.txt (#5391)

* Split examples cmake desc

* declutter top level CMakeLists.txt

* fail if building tests without gfx

* Move llvm fetching to another cmake file

* Further split CMakeLists.txt

* Neaten llvm fetching

* Remove last premake remnant

* correct cross builds

* Neaten

* Neaten project organization in vs

1 files changed, 91 insertions, 0 deletions

diff --git a/examples/CMakeLists.txt b/examples/CMakeLists.txt
new file mode 100644
index 000000000..ad2d6f319
--- /dev/null
+++ b/examples/CMakeLists.txt
@@ -0,0 +1,91 @@
+function(example dir)
+    set(debug_dir ${CMAKE_CURRENT_BINARY_DIR}/${dir})
+
+    file(
+        GLOB asset_files
+        CONFIGURE_DEPENDS
+        "${dir}/*.slang"
+        "${dir}/*.jpg"
+        "${dir}/*.obj"
+        "${dir}/*.mtl"
+        "${dir}/*.h"
+    )
+
+    list(LENGTH asset_files asset_files_length)
+    if(asset_files_length GREATER 0)
+        set(copy_assets_target "${dir}-copy-assets")
+
+        add_custom_target(
+            ${copy_assets_target}
+            COMMAND ${CMAKE_COMMAND} -E make_directory ${debug_dir}
+            COMMAND
+                ${CMAKE_COMMAND} -E copy_if_different ${asset_files}
+                ${debug_dir}
+            COMMENT "Copy example assets to ${debug_dir}"
+        )
+
+        set_target_properties(
+            ${copy_assets_target}
+            PROPERTIES FOLDER "examples/copy_assets"
+        )
+    endif()
+
+    slang_add_target(
+        ${dir}
+        EXECUTABLE
+        USE_FEWER_WARNINGS
+        LINK_WITH_PRIVATE
+            core
+            example-base
+            slang
+            gfx
+            gfx-util
+            platform
+            $<$<BOOL:${SLANG_ENABLE_CUDA}>:CUDA::cuda_driver>
+        EXTRA_COMPILE_DEFINITIONS_PRIVATE
+            $<$<BOOL:${SLANG_ENABLE_XLIB}>:SLANG_ENABLE_XLIB>
+        REQUIRED_BY all-examples
+        OPTIONAL_REQUIRES ${copy_assets_target} copy-prebuilt-binaries
+        FOLDER examples
+        DEBUG_DIR ${debug_dir}
+        ${ARGN}
+    )
+endfunction()
+
+if(SLANG_ENABLE_EXAMPLES)
+    #
+    # Examples
+    #
+    slang_add_target(
+        example-base
+        STATIC
+        LINK_WITH_PRIVATE
+            core
+            slang
+            gfx
+            platform
+            $<$<BOOL:${SLANG_ENABLE_CUDA}>:CUDA::cuda_driver>
+        FOLDER examples
+    )
+
+    add_custom_target(
+        all-examples
+        COMMENT "meta target which depends on all examples"
+    )
+    set_target_properties(all-examples PROPERTIES FOLDER examples)
+    example(autodiff-texture WIN32_EXECUTABLE)
+    example(cpu-com-example)
+    example(cpu-hello-world)
+    example(gpu-printing)
+    example(hello-world LINK_WITH_PRIVATE Vulkan-Headers)
+    example(model-viewer WIN32_EXECUTABLE)
+    example(platform-test WIN32_EXECUTABLE)
+    example(ray-tracing WIN32_EXECUTABLE)
+    example(ray-tracing-pipeline WIN32_EXECUTABLE)
+    example(shader-object)
+    example(shader-toy WIN32_EXECUTABLE)
+    example(triangle WIN32_EXECUTABLE)
+    if(SLANG_ENABLE_AFTERMATH)
+        example(nv-aftermath-example WIN32_EXECUTABLE)
+    endif()
+endif()