| ############################################################################## |
| # 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. |
| ############################################################################## |
| |
| # Find the native LLVM includes and library |
| # |
| # LLVM_ROOT - hints the search path |
| # LLVM_INCLUDE_DIR - where to find llvm include files |
| # LLVM_LIBRARY_DIR - where to find llvm libs |
| # LLVM_LFLAGS - llvm linker flags |
| # LLVM_MODULE_LIBS - list of llvm libs for working with modules. |
| |
| # First look in LLVM_ROOT then ENV{LLVM_HOME} then system path. |
| find_program(LLVM_CONFIG_EXECUTABLE llvm-config |
| PATHS |
| ${LLVM_ROOT}/bin |
| $ENV{LLVM_HOME} |
| NO_DEFAULT_PATH |
| ) |
| |
| if (LLVM_CONFIG_EXECUTABLE STREQUAL "LLVM_CONFIG_EXECUTABLE-NOTFOUND") |
| message(FATAL_ERROR "Could not find llvm-config") |
| endif () |
| |
| # Check LLVM Version to be compatible |
| execute_process( |
| COMMAND ${LLVM_CONFIG_EXECUTABLE} --version |
| OUTPUT_VARIABLE LLVM_VERSION |
| OUTPUT_STRIP_TRAILING_WHITESPACE |
| ) |
| |
| if (NOT "${LLVM_VERSION}" VERSION_EQUAL "$ENV{IMPALA_LLVM_VERSION}") |
| message(FATAL_ERROR |
| "LLVM version must be $ENV{IMPALA_LLVM_VERSION}. Found version: ${LLVM_VERSION}") |
| endif() |
| |
| message(STATUS "LLVM llvm-config found at: ${LLVM_CONFIG_EXECUTABLE}") |
| |
| execute_process( |
| COMMAND ${LLVM_CONFIG_EXECUTABLE} --includedir |
| OUTPUT_VARIABLE LLVM_INCLUDE_DIR |
| OUTPUT_STRIP_TRAILING_WHITESPACE |
| ) |
| |
| execute_process( |
| COMMAND ${LLVM_CONFIG_EXECUTABLE} --libdir |
| OUTPUT_VARIABLE LLVM_LIBRARY_DIR |
| OUTPUT_STRIP_TRAILING_WHITESPACE |
| ) |
| |
| execute_process( |
| COMMAND ${LLVM_CONFIG_EXECUTABLE} --ldflags |
| OUTPUT_VARIABLE LLVM_LFLAGS |
| OUTPUT_STRIP_TRAILING_WHITESPACE |
| ) |
| |
| # TODO: this does not work well. the config file will output -I/<include path> and |
| # also -DNDEBUG. I've hard coded the #define that are necessary but we should make |
| # this better. The necesesary flags are only #defines so maybe just def/undef those |
| # around #include to llvm headers? |
| #execute_process( |
| # COMMAND ${LLVM_CONFIG_EXECUTABLE} --cxxflags |
| # OUTPUT_VARIABLE LLVM_CFLAGS |
| # OUTPUT_STRIP_TRAILING_WHITESPACE |
| #) |
| set(LLVM_CFLAGS |
| "-D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS") |
| |
| |
| # Get the link libs we need. llvm has many and we don't want to link all of the libs |
| # if we don't need them. |
| execute_process( |
| COMMAND ${LLVM_CONFIG_EXECUTABLE} --libnames core mcjit native ipo bitreader target linker analysis debuginfodwarf |
| OUTPUT_VARIABLE LLVM_MODULE_LIBS |
| OUTPUT_STRIP_TRAILING_WHITESPACE |
| ) |
| |
| # CMake really doesn't like adding link directories and wants absolute paths |
| # Reconstruct it with LLVM_MODULE_LIBS and LLVM_LIBRARY_DIR |
| string(REPLACE " " ";" LIBS_LIST ${LLVM_MODULE_LIBS}) |
| set (LLVM_MODULE_LIBS "") |
| foreach (LIB ${LIBS_LIST}) |
| set(LLVM_MODULE_LIBS ${LLVM_MODULE_LIBS} "${LLVM_LIBRARY_DIR}/${LIB}") |
| endforeach(LIB) |
| |
| message(STATUS "LLVM include dir: ${LLVM_INCLUDE_DIR}") |
| message(STATUS "LLVM lib dir: ${LLVM_LIBRARY_DIR}") |
| |
| if (CMAKE_DEBUG) |
| message(STATUS "LLVM libs: ${LLVM_MODULE_LIBS}") |
| endif() |