diff --git a/cmake/wasi-sdk-sysroot.cmake b/cmake/wasi-sdk-sysroot.cmake
index 72088d9..630387c 100644
--- a/cmake/wasi-sdk-sysroot.cmake
+++ b/cmake/wasi-sdk-sysroot.cmake
@@ -98,7 +98,7 @@ function(define_compiler_rt target)
   add_dependencies(compiler-rt-build compiler-rt-build-${target})
 endfunction()
 
-define_compiler_rt(wasm32-wasi)
+define_compiler_rt(wasm32-wasip1)
 define_compiler_rt(wasm32-wasip1-threads)
 
 # In addition to the default installation of `compiler-rt` itself also copy
@@ -115,12 +115,12 @@ add_custom_target(compiler-rt-post-build
   COMMAND ${CMAKE_COMMAND} -E copy_directory
     ${clang_resource_dir}/include ${wasi_resource_dir}/include
 
-  # Copy the `lib/wasm32-unknown-wasi` folder to `lib/wasm32-unknown-wasi{p1,p2}` to ensure that those
+  # Copy the `lib/wasm32-unknown-wasip1` folder to `lib/wasm32-unknown-wasi{,p2}` to ensure that those
   # OS-strings also work for looking up the compiler-rt.a file.
   COMMAND ${CMAKE_COMMAND} -E copy_directory
-    ${wasi_resource_dir}/lib/wasm32-unknown-wasi ${wasi_resource_dir}/lib/wasm32-unknown-wasip1
+    ${wasi_resource_dir}/lib/wasm32-unknown-wasip1 ${wasi_resource_dir}/lib/wasm32-unknown-wasi
   COMMAND ${CMAKE_COMMAND} -E copy_directory
-    ${wasi_resource_dir}/lib/wasm32-unknown-wasi ${wasi_resource_dir}/lib/wasm32-unknown-wasip2
+    ${wasi_resource_dir}/lib/wasm32-unknown-wasip1 ${wasi_resource_dir}/lib/wasm32-unknown-wasip2
   # Copy the `lib/wasm32-unknown-wasip1-threads` folder to `lib/wasm32-unknown-wasi-threads`
   COMMAND ${CMAKE_COMMAND} -E copy_directory
     ${wasi_resource_dir}/lib/wasm32-unknown-wasip1-threads ${wasi_resource_dir}/lib/wasm32-unknown-wasi-threads
@@ -147,6 +147,12 @@ function(define_wasi_libc_sub target target_suffix lto)
     list(APPEND extra_cflags_list -fPIC)
   endif()
 
+  # The `wasm32-wasi` target is deprecated in clang, so ignore the deprecation
+  # warnings for now.
+  if(${target} STREQUAL wasm32-wasi OR ${target} STREQUAL wasm32-wasi-threads)
+    list(APPEND extra_cflags_list -Wno-deprecated)
+  endif()
+
   list(JOIN extra_cflags_list " " extra_cflags)
 
   if(${target} MATCHES threads)
@@ -171,6 +177,7 @@ function(define_wasi_libc_sub target target_suffix lto)
       -DTARGET_TRIPLE=${target}
       -DCMAKE_INSTALL_PREFIX=${wasi_sysroot}
       -DCMAKE_C_FLAGS=${extra_cflags}
+      -DCMAKE_ASM_FLAGS=${extra_cflags}
       -DBUILTINS_LIB=${libcompiler_rt_a}
       -DUSE_WASM_COMPONENT_LD=OFF
       -DWASI_SDK_VERSION=${wasi_sdk_version}
@@ -231,6 +238,12 @@ function(define_libcxx_sub target target_suffix extra_target_flags extra_libdir_
     --sysroot ${wasi_sysroot}
     -resource-dir ${wasi_resource_dir})
 
+  # The `wasm32-wasi` target is deprecated in clang, so ignore the deprecation
+  # warnings for now.
+  if(${target} STREQUAL wasm32-wasi OR ${target} STREQUAL wasm32-wasi-threads)
+    list(APPEND extra_flags -Wno-deprecated)
+  endif()
+
   set(extra_cflags_list ${CMAKE_C_FLAGS} ${extra_flags})
   list(JOIN extra_cflags_list " " extra_cflags)
   set(extra_cxxflags_list ${CMAKE_CXX_FLAGS} ${extra_flags})
@@ -245,21 +258,17 @@ function(define_libcxx_sub target target_suffix extra_target_flags extra_libdir_
       -DCMAKE_INSTALL_INCLUDEDIR=${wasi_sysroot}/include/${target}
       -DCMAKE_STAGING_PREFIX=${wasi_sysroot}
       -DCMAKE_POSITION_INDEPENDENT_CODE=${pic}
-      -DCXX_SUPPORTS_CXX11=ON
       -DLIBCXX_ENABLE_THREADS:BOOL=ON
       -DLIBCXX_HAS_PTHREAD_API:BOOL=ON
       -DLIBCXX_HAS_EXTERNAL_THREAD_API:BOOL=OFF
-      -DLIBCXX_BUILD_EXTERNAL_THREAD_LIBRARY:BOOL=OFF
       -DLIBCXX_HAS_WIN32_THREAD_API:BOOL=OFF
       -DLLVM_COMPILER_CHECKED=ON
       -DLIBCXX_ENABLE_SHARED:BOOL=${pic}
-      -DLIBCXX_ENABLE_EXPERIMENTAL_LIBRARY:BOOL=OFF
       -DLIBCXX_ENABLE_EXCEPTIONS:BOOL=OFF
       -DLIBCXX_ENABLE_FILESYSTEM:BOOL=ON
       -DLIBCXX_ENABLE_ABI_LINKER_SCRIPT:BOOL=OFF
       -DLIBCXX_CXX_ABI=libcxxabi
-      -DLIBCXX_CXX_ABI_INCLUDE_PATHS=${llvm_proj_dir}/libcxxabi/include
-      -DLIBCXX_HAS_MUSL_LIBC:BOOL=ON
+      -DLIBCXX_HAS_MUSL_LIBC:BOOL=OFF
       -DLIBCXX_ABI_VERSION=2
       -DLIBCXXABI_ENABLE_EXCEPTIONS:BOOL=OFF
       -DLIBCXXABI_ENABLE_SHARED:BOOL=${pic}
@@ -267,9 +276,7 @@ function(define_libcxx_sub target target_suffix extra_target_flags extra_libdir_
       -DLIBCXXABI_ENABLE_THREADS:BOOL=ON
       -DLIBCXXABI_HAS_PTHREAD_API:BOOL=ON
       -DLIBCXXABI_HAS_EXTERNAL_THREAD_API:BOOL=OFF
-      -DLIBCXXABI_BUILD_EXTERNAL_THREAD_LIBRARY:BOOL=OFF
       -DLIBCXXABI_HAS_WIN32_THREAD_API:BOOL=OFF
-      -DLIBCXXABI_ENABLE_PIC:BOOL=${pic}
       -DLIBCXXABI_USE_LLVM_UNWINDER:BOOL=OFF
       -DUNIX:BOOL=ON
       -DCMAKE_C_FLAGS=${extra_cflags}
diff --git a/src/llvm-project b/src/llvm-project
index 222fc11..8164f1a 160000
--- a/src/llvm-project
+++ b/src/llvm-project
@@ -1 +1 @@
-Subproject commit 222fc11f2b8f25f6a0f4976272ef1bb7bf49521d
+Subproject commit 8164f1a0c17b192e133817436bdb07598b7402a3
diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index edbb129..9914571 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -83,6 +83,11 @@ function(add_testcase runwasi test)
         target_link_options(${target_name} PRIVATE -pthread)
       endif()
 
+      if(target STREQUAL wasm32-wasi OR target STREQUAL wasm32-wasi-threads)
+        target_compile_options(${target_name} PRIVATE -Wno-deprecated)
+        target_link_options(${target_name} PRIVATE -Wno-deprecated)
+      endif()
+
       if(runwasi)
         add_test(
           NAME test-${target_name}