https://bugs.llvm.org/show_bug.cgi?id=45027
Bug ID: 45027
Summary: Missing ClangConfigVersion
Product: Build scripts
Version: trunk
Hardware: PC
OS: Windows NT
Status: NEW
Severity: enhancement
Priority: P
Component: cmake
Assignee: unassignedb...@nondot.org
Reporter: alex.reink...@gmail.com
CC: llvm-bugs@lists.llvm.org
I cloned LLVM from https://github.com/llvm/llvm-project.git
When building LLVM+clang+lld with CMake via:
cmake -G "Visual Studio 16 2019" -A x64 -Thost=x64
-DLLVM_ENABLE_PROJECTS="clang;lld" -DLLVM_BUILD_32_BITS=OFF -DLLVM_ENABLE_EH=ON
-DLLVM_ENABLE_RTTI=ON -DLLVM_ENABLE_ASSERTIONS=ON
-DLLVM_TARGETS_TO_BUILD=X86;ARM;NVPTX;AArch64;Mips;Hexagon;PowerPC path/to/llvm
the installed directory tree has the following files:
/lib/cmake/llvm/{LLVMConfig,LLVMConfigVersion,...}.cmake
/lib/cmake/clang/{ClangConfig,ClangTargets,ClangTargets-release}.cmake
This is critically missing ClangConfigVersion.cmake! Because of this, it is not
possible to simply add the root of the install directory to CMAKE_MODULE_PATH.
One must instead specify -DClang_DIR and -DLLVM_DIR separately and use
find_package in CONFIG mode rather than the default.
I've tested this with LLVM 8.0.1, 9.0.1, 10.0rc2, and trunk.
Is this an error building LLVM/Clang on my part? Is there a better way of
getting to the `clang` imported target?
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