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cmake/toolchain/wasi-threads.cmake

@@ -0,0 +1,20 @@
+# Wrapper around wasi-sdk's pthread toolchain that uses the non-deprecated
+# wasm32-wasip1-threads triple (compatible with SDK 25+).
+
+# Propagate WASI_SDK_PREFIX into try_compile sub-projects (used during ABI detection)
+list(APPEND CMAKE_TRY_COMPILE_PLATFORM_VARIABLES WASI_SDK_PREFIX)
+
+if(NOT WASI_SDK_PREFIX)
+  if(DEFINED ENV{WASI_SDK_PATH})
+    set(WASI_SDK_PREFIX $ENV{WASI_SDK_PATH})
+  elseif(EXISTS "/opt/wasi-sdk")
+    set(WASI_SDK_PREFIX "/opt/wasi-sdk")
+  endif()
+endif()
+
+include(${WASI_SDK_PREFIX}/share/cmake/wasi-sdk-pthread.cmake)
+
+set(triple wasm32-wasip1-threads)
+set(CMAKE_C_COMPILER_TARGET ${triple})
+set(CMAKE_CXX_COMPILER_TARGET ${triple})
+set(CMAKE_ASM_COMPILER_TARGET ${triple})