Installation script can't find file

[moongoal]

OS: Win10 x64
LLVM version: 10.0.0-rc2
Visual Studio version: 16.5 (preview 2)
Build script:

cmake -G "Visual Studio 16 2019" -A x64 -Thost=x64 "-DLLVM_ENABLE_PROJECTS=clang;clang-tools-extra;lld;lldb;polly;compiler-rt" "-DCMAKE_INSTALL_PREFIX=D:/llvm/10.0.0-rc2" -DCMAKE_BUILD_TYPE=Release -DLLVM_ENABLE_ASSERTIONS=No "-DLLVM_TARGETS_TO_BUILD=X86" ..\llvm\

cmake --build . -- "-m:6" "-p:Configuration=Release" | tee -filepath build.log -append

After build completes, I run the following:

cmake --install . --strip --config Release

And after copying some files the install script crashes with the following error:

CMake Error at projects/compiler-rt/lib/builtins/cmake_install.cmake:39 (file):
  file INSTALL cannot find
  "D:/llvm-project-llvmorg-10.0.0-rc2/build/$(Configuration)/lib/clang/10.0.0/lib/windows/clang_rt.builtins-x86_64.lib":
  No such file or directory.
Call Stack (most recent call first):
  projects/compiler-rt/lib/cmake_install.cmake:38 (include)
  projects/compiler-rt/cmake_install.cmake:38 (include)
  projects/cmake_install.cmake:37 (include)
  cmake_install.cmake:63 (include)

I can go around the issue by manually patching the install scripts, with:

find . -name cmake_install.cmake -type f -exec sed -i -e "s/\$(Configuration)/Release/g" "{}" \;

EDIT: Also - not sure whether it's intended to work like this or I should file another issue - the install script doesn't copy the external DLL files for LZMA and libXML2, causing lldb to silently crash when run.

[delcypher]

I don't think multi-configuration invocation of the install targets is well supported. I think most people use Ninja which is a single configuration generator (on Windows it's still possible to use Ninja with MSVC).

[delcypher]

To be clear this is still a bug but this is not something I have time to fix.