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c6bd873403
With the new behaviour, the /MD or similar options aren't added to e.g. CMAKE_CXX_FLAGS_RELEASE, but are added separately by CMake. They can be changed by the cmake variable CMAKE_MSVC_RUNTIME_LIBRARY or with the target property MSVC_RUNTIME_LIBRARY. LLVM has had its own custom CMake flags, e.g. LLVM_USE_CRT_RELEASE, which affects which CRT is used for release mode builds. Deprecate these and direct users to use CMAKE_MSVC_RUNTIME_LIBRARY directly instead (and do a best effort attempt at setting CMAKE_MSVC_RUNTIME_LIBRARY based on the existing LLVM_USE_CRT_ flags). This only handles the simple cases, it doesn't handle multi-config generators with different LLVM_USE_CRT_* variables for different configs though, but that's probably fine - we should move over to the new upstream CMake mechanism anyway, and push users towards that. Change code in compiler-rt, that previously tried to override the CRT choice to /MT, to set CMAKE_MSVC_RUNTIME_LIBRARY instead of meddling in the old variables. This resolves the policy issue in https://github.com/llvm/llvm-project/issues/63286, and should handle the issues that were observed originally when the minimum CMake version was bumped, in https://github.com/llvm/llvm-project/issues/62719 and https://github.com/llvm/llvm-project/issues/62739. Differential Revision: https://reviews.llvm.org/D155233 |
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| .. | ||
| CMakePolicy.cmake | ||
| EnableLanguageNolink.cmake | ||
| ExtendPath.cmake | ||
| FindGRPC.cmake | ||
| FindPrefixFromConfig.cmake | ||
| GetClangResourceDir.cmake | ||
| GNUInstallPackageDir.cmake | ||
| HandleCompilerRT.cmake | ||
| HandleOutOfTreeLLVM.cmake | ||
| LLVMCheckCompilerLinkerFlag.cmake | ||
| SetPlatformToolchainTools.cmake | ||
| SortSubset.cmake | ||