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# Copyright (c) 2007-2015 University of Illinois at Urbana-Champaign.
# Copyright (c) 2015, Vsevolod Stakhov
# - Find LLVM
# This module can be used to find LLVM.
# It requires that the llvm-config executable be available on the system path.
# Once found, llvm-config is used for everything else.
#
# Typical usage could be:
# find_package(LLVM QUIET REQUIRED COMPONENTS jit native interpreter)
#
# If the QUIET flag is not set, the specified components and LLVM version are
# outputted.
#
# If the COMPONENTS are not set, the default set of "all" is used.
#
# The following variables are set:
#
# LLVM_FOUND - Set to YES if LLVM is found.
# LLVM_VERSION - Set to the decimal version of the LLVM library.
# LLVM_C_FLAGS - All flags that should be passed to a C compiler.
# LLVM_CXX_FLAGS - All flags that should be passed to a C++ compiler.
# LLVM_CPP_FLAGS - All flags that should be passed to the C pre-processor.
# LLVM_LD_FLAGS - Additional flags to pass to the linker.
# LLVM_LIBRARY_DIRS - A list of directories where the LLVM libraries are located.
# LLVM_INCLUDE_DIRS - A list of directories where the LLVM headers are located.
# LLVM_LIBRARIES - A list of libraries which should be linked against.
# A macro to run llvm config
macro(_llvm_config _var_name)
# Firstly, locate the LLVM config executable
find_program(_llvm_config_exe
NAMES llvm-config
DOC "llvm-config executable location"
)
# If no llvm-config executable was found, set the output variable to not
# found.
if (NOT _llvm_config_exe)
set(${_var_name} "${_var_name}-NOTFOUND")
else (NOT _llvm_config_exe)
# Otherwise, run llvm-config
execute_process(
COMMAND ${_llvm_config_exe} ${ARGN}
OUTPUT_VARIABLE ${_var_name}
RESULT_VARIABLE _llvm_config_retval
OUTPUT_STRIP_TRAILING_WHITESPACE
)
if (RESULT_VARIABLE)
message(SEND_ERROR
"Error running llvm-config with arguments: ${ARGN}")
endif (RESULT_VARIABLE)
endif (NOT _llvm_config_exe)
endmacro(_llvm_config)
# The default set of components
set(_llvm_components all)
# If components have been specified via find_package, use them
if (LLVM_FIND_COMPONENTS)
set(_llvm_components ${LLVM_FIND_COMPONENTS})
endif (LLVM_FIND_COMPONENTS)
if (NOT LLVM_FIND_QUIETLY)
message(STATUS "Looking for LLVM components: ${_llvm_components}")
endif (NOT LLVM_FIND_QUIETLY)
_llvm_config(LLVM_VERSION --version)
_llvm_config(LLVM_C_FLAGS --cflags)
_llvm_config(LLVM_CXX_FLAGS --cxxflags)
_llvm_config(LLVM_CPP_FLAGS --cppflags)
_llvm_config(LLVM_LD_FLAGS --ldflags)
_llvm_config(LLVM_LIBRARY_DIRS --libdir)
_llvm_config(LLVM_INCLUDE_DIRS --includedir)
_llvm_config(LLVM_LIBRARIES --libs ${_llvm_components})
if (NOT LLVM_FIND_QUIETLY)
message(STATUS "Found LLVM version: ${LLVM_VERSION}")
endif (NOT LLVM_FIND_QUIETLY)
SET(libclang_llvm_header_search_paths
# LLVM Debian/Ubuntu nightly packages: http://llvm.org/apt/
"/usr/lib/llvm-${LLVM_VERSION}/include/"
# LLVM MacPorts
"/opt/local/libexec/llvm-${LLVM_VERSION}/include"
# LLVM Homebrew
"/usr/local/Cellar/llvm/${LLVM_VERSION}/include"
# LLVM Homebrew/versions
"/usr/local/lib/llvm-${LLVM_VERSION}/include"
# FreeBSD ports versions
"/usr/local/llvm${LLVM_VERSION}/include"
)
SET(libclang_llvm_lib_search_paths
# LLVM Debian/Ubuntu nightly packages: http://llvm.org/apt/
"/usr/lib/llvm-${LLVM_VERSION}/lib/"
# LLVM MacPorts
"/opt/local/libexec/llvm-${LLVM_VERSION}/lib"
# LLVM Homebrew
"/usr/local/Cellar/llvm/${LLVM_VERSION}/lib"
# LLVM Homebrew/versions
"/usr/local/lib/llvm-${LLVM_VERSION}/lib"
# FreeBSD ports versions
"/usr/local/llvm${LLVM_VERSION}/lib"
)
find_path(LIBCLANG_INCLUDE_DIR clang-c/Index.h
PATHS ${libclang_llvm_header_search_paths}
PATH_SUFFIXES LLVM/include #Windows package from http://llvm.org/releases/
DOC "The path to the directory that contains clang-c/Index.h")
find_library(LIBCLANG_LIBRARY NAMES libclang.imp libclang clang
PATHS ${libclang_llvm_lib_search_paths}
PATH_SUFFIXES LLVM/lib #Windows package from http://llvm.org/releases/
DOC "The file that corresponds to the libclang library.")
get_filename_component(LIBCLANG_LIBRARY_DIR ${LIBCLANG_LIBRARY} PATH)
set(LIBCLANG_LIBRARIES ${LIBCLANG_LIBRARY})
set(LIBCLANG_INCLUDE_DIRS ${LIBCLANG_INCLUDE_DIR})
# handle the QUIETLY and REQUIRED arguments and set LLVM_FOUND to TRUE if
# all listed variables are TRUE
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(LLVM
DEFAULT_MSG
LLVM_LIBRARIES
LLVM_INCLUDE_DIRS
LLVM_LIBRARY_DIRS)
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