[libunwind] build error for x86_64-windows-gnu target

[trcrsired]

-- Performing Test CXX_SUPPORTS_FNO_RTTI_FLAG - Failed
CMake Error at /home/cqwrteur/toolchains_build/llvm-project/libunwind/src/CMakeLists.txt:102 (message):
  Compiler doesn't support generation of unwind tables if exception support
  is disabled.  Building libunwind DSO with runtime dependency on C++ ABI
  library is not supported.


-- Configuring incomplete, errors occurred!
ninja: Entering directory `.'

if (LIBUNWIND_ENABLE_SHARED AND
    NOT (CXX_SUPPORTS_FNO_EXCEPTIONS_FLAG AND
         CXX_SUPPORTS_FUNWIND_TABLES_FLAG))
  message(FATAL_ERROR
          "Compiler doesn't support generation of unwind tables if exception "
          "support is disabled.  Building libunwind DSO with runtime dependency "
          "on C++ ABI library is not supported.")
endif()

This fatal_error is useless for that.

[xiedeacc]

meet same error build for aarch64

 /usr/local/cmake-3.30.0/bin/cmake -G "Unix Makefiles" ../llvm \
    -DCMAKE_INSTALL_PREFIX=/usr/local/aarch64-llvm/18 \
    -DCMAKE_BUILD_TYPE=Release \
    -DLLVM_ENABLE_PROJECTS="clang;clang-tools-extra" \
    -DLLVM_ENABLE_RUNTIMES="libc;libunwind;libcxxabi;libcxx;compiler-rt" \
    -DCLANG_DEFAULT_CXX_STDLIB=libc++ \
    -DCLANG_DEFAULT_RTLIB=compiler-rt \
    -DLLVM_ENABLE_PER_TARGET_RUNTIME_DIR=ON \
    -DMLIR_INCLUDE_INTEGRATION_TESTS=OFF \
    -DLLVM_INCLUDE_TESTS=OFF \
    -DLLVM_BUILD_TESTS=OFF \
    -DLLDB_INCLUDE_TESTS=OFF \
    -DCLANG_INCLUDE_TESTS=OFF \
    -DLLVM_DEFAULT_TARGET_TRIPLE=aarch64-linux-gnu \
    -DLLVM_TARGET_ARCH=AArch64