[PATCH] D121033: [cmake] Pass /winsysroot explicitly

[Shoaib Meenai via Phabricator via llvm-commits]

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We were relying on HandleLLVMOptions adding this flag, but that's not
included in compiler-rt. Add the flag explicitly ourselves to ensure
it's present; the duplication of the flag in the parts of the build
which do include HandleLLVMOptions doesn't cause any issues.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D121033

Files:
  llvm/cmake/platforms/WinMsvc.cmake


Index: llvm/cmake/platforms/WinMsvc.cmake
===================================================================
--- llvm/cmake/platforms/WinMsvc.cmake
+++ llvm/cmake/platforms/WinMsvc.cmake
@@ -265,6 +265,7 @@
     --target=${TRIPLE_ARCH}-windows-msvc
     -fms-compatibility-version=19.20
     -vctoolsversion ${MSVC_VER}
+    -winsysroot ${LLVM_WINSYSROOT}
     -winsdkversion ${WINSDK_VER})
 
 if(case_sensitive_filesystem)


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