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Copy pathFindLLVMAlt.cmake
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111 lines (98 loc) · 3.79 KB
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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)
if(LLVMAlt_FOUND)
return()
endif()
if(DEFINED LLVM_ROOT)
# if llvm source is set to conda then prefer conda llvm over system llvm even
# if the system one is newer
foreach(ARROW_LLVM_VERSION ${ARROW_LLVM_VERSIONS})
find_package(LLVM
${ARROW_LLVM_VERSION}
CONFIG
NO_DEFAULT_PATH
HINTS
${LLVM_ROOT})
if(LLVM_FOUND)
break()
endif()
endforeach()
endif()
if(NOT LLVM_FOUND)
foreach(ARROW_LLVM_VERSION ${ARROW_LLVM_VERSIONS})
set(LLVM_HINTS ${LLVM_ROOT} ${LLVM_DIR} /usr/lib /usr/share)
if(APPLE)
find_program(BREW brew)
if(BREW)
string(REGEX REPLACE "^([0-9]+)(\\..+)?" "\\1" ARROW_LLVM_VERSION_MAJOR
"${ARROW_LLVM_VERSION}")
execute_process(COMMAND ${BREW} --prefix "llvm@${ARROW_LLVM_VERSION_MAJOR}"
OUTPUT_VARIABLE LLVM_BREW_PREFIX
OUTPUT_STRIP_TRAILING_WHITESPACE)
list(APPEND LLVM_HINTS ${LLVM_BREW_PREFIX})
endif()
endif()
find_package(LLVM
${ARROW_LLVM_VERSION}
CONFIG
HINTS
${LLVM_HINTS})
if(LLVM_FOUND)
break()
endif()
endforeach()
endif()
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 ${LLVM_TOOLS_BINARY_DIR})
add_library(LLVM::LLVM_HEADERS INTERFACE IMPORTED)
set_target_properties(LLVM::LLVM_HEADERS
PROPERTIES INTERFACE_INCLUDE_DIRECTORIES "${LLVM_INCLUDE_DIRS}"
INTERFACE_COMPILE_FLAGS "${LLVM_DEFINITIONS}")
add_library(LLVM::LLVM_LIBS INTERFACE IMPORTED)
set_target_properties(LLVM::LLVM_LIBS PROPERTIES INTERFACE_LINK_LIBRARIES
"${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()