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# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
# under the License.
#
# Usage of this module as follows:
#
# find_package(LLVMAlt)
set(LLVM_HINTS ${LLVM_ROOT} ${LLVM_DIR} /usr/lib /usr/share)
if(LLVM_BREW_PREFIX)
list(APPEND LLVM_HINTS ${LLVM_BREW_PREFIX})
endif()
foreach(ARROW_LLVM_VERSION ${ARROW_LLVM_VERSIONS})
find_package(LLVM
${ARROW_LLVM_VERSION}
CONFIG
HINTS
${LLVM_HINTS})
if(LLVM_FOUND)
break()
endif()
endforeach()
if(LLVM_FOUND)
# Find the libraries that correspond to the LLVM components
llvm_map_components_to_libnames(LLVM_LIBS
core
mcjit
native
ipo
bitreader
target
linker
analysis
debuginfodwarf)
find_program(LLVM_LINK_EXECUTABLE llvm-link HINTS ${LLVM_TOOLS_BINARY_DIR})
find_program(CLANG_EXECUTABLE
NAMES clang-${LLVM_PACKAGE_VERSION}
clang-${LLVM_VERSION_MAJOR}.${LLVM_VERSION_MINOR}
clang-${LLVM_VERSION_MAJOR} clang
HINTS ${LLVM_TOOLS_BINARY_DIR})
add_library(LLVM::LLVM_INTERFACE INTERFACE IMPORTED)
set_target_properties(LLVM::LLVM_INTERFACE
PROPERTIES INTERFACE_INCLUDE_DIRECTORIES "${LLVM_INCLUDE_DIRS}"
INTERFACE_COMPILE_FLAGS "${LLVM_DEFINITIONS}"
INTERFACE_LINK_LIBRARIES "${LLVM_LIBS}")
endif()
mark_as_advanced(CLANG_EXECUTABLE LLVM_LINK_EXECUTABLE)
find_package_handle_standard_args(
LLVMAlt
REQUIRED_VARS # The first variable is used for display.
LLVM_PACKAGE_VERSION CLANG_EXECUTABLE LLVM_FOUND LLVM_LINK_EXECUTABLE)
if(LLVMAlt_FOUND)
message(STATUS "Using LLVMConfig.cmake in: ${LLVM_DIR}")
message(STATUS "Found llvm-link ${LLVM_LINK_EXECUTABLE}")
message(STATUS "Found clang ${CLANG_EXECUTABLE}")
endif()
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