Cannot use llvm-20-dev without mlir-20-tools and libpolly-20-dev installed #109392
Description
Reproducer:
cmake_minimum_required(VERSION 3.20)
enable_testing()
set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
set(CMAKE_FIND_PACKAGE_SORT_ORDER NATURAL)
set(CMAKE_FIND_PACKAGE_SORT_DIRECTION DEC)
set(CMAKE_CXX_STANDARD 23)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_EXTENSIONS OFF)
project(Test)
find_package(LLVM REQUIRED CONFIG)
message(STATUS "Found LLVM ${LLVM_PACKAGE_VERSION}")
message(STATUS "Using LLVMConfig.cmake in: ${LLVM_DIR}")
include(AddLLVM)
cmake complains:
CMake Error at /usr/lib/llvm-20/lib/cmake/llvm/LLVMExports.cmake:1914 (message):
The imported target "mlir-pdll-lsp-server" references the file
"/usr/lib/llvm-20/bin/mlir-pdll-lsp-server"
but this file does not exist. Possible reasons include:
* The file was deleted, renamed, or moved to another location.
* An install or uninstall procedure did not complete successfully.
* The installation package was faulty and contained
"/usr/lib/llvm-20/lib/cmake/llvm/LLVMExports.cmake"
but not all the files it references.
Call Stack (most recent call first):
/usr/lib/llvm-20/cmake/LLVMConfig.cmake:370 (include)
CMakeLists.txt:15 (find_package)
-- Configuring incomplete, errors occurred!
Workaround: install mlir-20-tools and libpolly-20-dev as well.