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cmake/FetchWasiSDK.cmake

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+cmake_minimum_required(VERSION 3.14)
+
+set(WASI_SDK_VERSION "25")
+set(WASI_SDK_FULL_VERSION "${WASI_SDK_VERSION}.0")
+
+# Determine platform and architecture
+if(CMAKE_HOST_SYSTEM_NAME STREQUAL "Linux")
+  set(WASI_SDK_PLATFORM "linux")
+elseif(CMAKE_HOST_SYSTEM_NAME STREQUAL "Darwin")
+  set(WASI_SDK_PLATFORM "macos")
+elseif(CMAKE_HOST_SYSTEM_NAME STREQUAL "Windows")
+  set(WASI_SDK_PLATFORM "windows")
+else()
+  message(FATAL_ERROR "Unsupported platform: ${CMAKE_HOST_SYSTEM_NAME}")
+endif()
+
+if(CMAKE_HOST_SYSTEM_PROCESSOR MATCHES "x86_64|amd64|AMD64")
+  set(WASI_SDK_ARCH "x86_64")
+elseif(CMAKE_HOST_SYSTEM_PROCESSOR MATCHES "aarch64|arm64")
+  set(WASI_SDK_ARCH "arm64")
+else()
+  message(FATAL_ERROR "Unsupported Linux architecture: ${CMAKE_HOST_SYSTEM_PROCESSOR}")
+endif()
+
+set(WASI_SDK_BASE_URL "https://github.com/WebAssembly/wasi-sdk/releases/download")
+set(WASI_SDK_FILENAME "wasi-sdk-${WASI_SDK_VERSION}.0-${WASI_SDK_ARCH}-${WASI_SDK_PLATFORM}")
+set(WASI_SDK_URL "${WASI_SDK_BASE_URL}/wasi-sdk-${WASI_SDK_VERSION}/${WASI_SDK_FILENAME}.tar.gz")
+
+set(FETCHCONTENT_QUIET FALSE)
+
+include(FetchContent)
+FetchContent_Declare(
+  WasiSDK
+  URL      ${WASI_SDK_URL}
+  DOWNLOAD_EXTRACT_TIMESTAMP true
+  FIND_PACKAGE_ARGS
+)
+
+FetchContent_MakeAvailable(WasiSDK)
+
+set(WASI_SDK_PATH ${wasisdk_SOURCE_DIR})