wip

CMakeLists.txt

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+# Build logic for building both a toolchain and a sysroot for WASI.
+#
+# This top level `CMakeLists.txt` file can be used either to build a clang
+# toolchain or a WASI sysroot. Note that this can't be done at the same time.
+# A toolchain build requires a compiler for the target architecture. A
+# WASI sysroot build requires this previous compiler and must be runnable on
+# the host.
+
+cmake_minimum_required(VERSION 3.26)
+project(wasi-sdk)
+include(ExternalProject)
+
+set(WASI_SDK_TARGETS "wasm32-wasi;wasm32-wasip1;wasm32-wasip2;wasm32-wasip1-threads;wasm32-wasi-threads"
+  CACHE STRING "List of WASI targets to build")
+option(WASI_SDK_BUILD_TOOLCHAIN "Build a toolchain instead of the sysroot" OFF)
+
+set(llvm_proj_dir ${CMAKE_CURRENT_SOURCE_DIR}/src/llvm-project)
+set(wasi_libc ${CMAKE_CURRENT_SOURCE_DIR}/src/wasi-libc)
+
+list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake")
+include(wasi-sdk-enable-ccache)
+
+# Set some variables based on the `version.py` script
+set(version_script ${CMAKE_CURRENT_SOURCE_DIR}/version.py)
+execute_process(
+  COMMAND ${PYTHON} ${version_script} llvm-major --llvm-dir=${llvm_proj_dir}
+  OUTPUT_VARIABLE clang_version
+  OUTPUT_STRIP_TRAILING_WHITESPACE)
+execute_process(
+  COMMAND ${PYTHON} ${version_script}
+  OUTPUT_VARIABLE wasi_sdk_version
+  OUTPUT_STRIP_TRAILING_WHITESPACE)
+
+# Only include one version of the build logic as pulling in both isn't
+# supported at this time.
+if(WASI_SDK_BUILD_TOOLCHAIN)
+include(wasi-sdk-toolchain)
+else()
+include(wasi-sdk-sysroot)
+endif()

CONTRIBUTING.md

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+# Contributing
+
+TODO