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macro(find_llvm_parts)
# Rely on llvm-config.
set(CONFIG_OUTPUT)
if(NOT LLVM_CONFIG_PATH)
find_program(LLVM_CONFIG_PATH "llvm-config")
endif()
if(DEFINED LLVM_PATH)
set(LLVM_INCLUDE_DIR ${LLVM_INCLUDE_DIR} CACHE PATH "Path to llvm/include")
set(LLVM_PATH ${LLVM_PATH} CACHE PATH "Path to LLVM source tree")
set(LLVM_MAIN_SRC_DIR ${LLVM_PATH})
set(LLVM_CMAKE_PATH "${LLVM_PATH}/cmake/modules")
elseif(LLVM_CONFIG_PATH)
message(STATUS "Found LLVM_CONFIG_PATH as ${LLVM_CONFIG_PATH}")
set(LIBCXXABI_USING_INSTALLED_LLVM 1)
set(CONFIG_COMMAND ${LLVM_CONFIG_PATH}
"--includedir"
"--prefix"
"--src-root")
execute_process(
COMMAND ${CONFIG_COMMAND}
RESULT_VARIABLE HAD_ERROR
OUTPUT_VARIABLE CONFIG_OUTPUT
)
if(NOT HAD_ERROR)
string(REGEX REPLACE
"[ \t]*[\r\n]+[ \t]*" ";"
CONFIG_OUTPUT ${CONFIG_OUTPUT})
else()
string(REPLACE ";" " " CONFIG_COMMAND_STR "${CONFIG_COMMAND}")
message(STATUS "${CONFIG_COMMAND_STR}")
message(FATAL_ERROR "llvm-config failed with status ${HAD_ERROR}")
endif()
list(GET CONFIG_OUTPUT 0 INCLUDE_DIR)
list(GET CONFIG_OUTPUT 1 LLVM_OBJ_ROOT)
list(GET CONFIG_OUTPUT 2 MAIN_SRC_DIR)
set(LLVM_INCLUDE_DIR ${INCLUDE_DIR} CACHE PATH "Path to llvm/include")
set(LLVM_BINARY_DIR ${LLVM_OBJ_ROOT} CACHE PATH "Path to LLVM build tree")
set(LLVM_MAIN_SRC_DIR ${MAIN_SRC_DIR} CACHE PATH "Path to LLVM source tree")
# --cmakedir is supported since llvm r291218 (4.0 release)
execute_process(
COMMAND ${LLVM_CONFIG_PATH} --cmakedir
RESULT_VARIABLE HAD_ERROR
OUTPUT_VARIABLE CONFIG_OUTPUT
ERROR_QUIET)
if(NOT HAD_ERROR)
string(STRIP "${CONFIG_OUTPUT}" LLVM_CMAKE_PATH)
else()
set(LLVM_CMAKE_PATH
"${LLVM_BINARY_DIR}/lib${LLVM_LIBDIR_SUFFIX}/cmake/llvm")
endif()
else()
set(LLVM_FOUND OFF)
message(WARNING "UNSUPPORTED LIBCXXABI CONFIGURATION DETECTED: "
"llvm-config not found and LLVM_PATH not defined.\n"
"Reconfigure with -DLLVM_CONFIG_PATH=path/to/llvm-config "
"or -DLLVM_PATH=path/to/llvm-source-root.")
return()
endif()
if (EXISTS "${LLVM_CMAKE_PATH}")
list(APPEND CMAKE_MODULE_PATH "${LLVM_CMAKE_PATH}")
elseif (EXISTS "${LLVM_MAIN_SRC_DIR}/cmake/modules")
list(APPEND CMAKE_MODULE_PATH "${LLVM_MAIN_SRC_DIR}/cmake/modules")
else()
set(LLVM_FOUND OFF)
message(WARNING "Neither ${LLVM_CMAKE_PATH} nor ${LLVM_MAIN_SRC_DIR}/cmake/modules found")
return()
endif()
set(LLVM_FOUND ON)
endmacro(find_llvm_parts)
macro(configure_out_of_tree_llvm)
message(STATUS "Configuring for standalone build.")
set(LIBCXXABI_STANDALONE_BUILD 1)
find_llvm_parts()
# Add LLVM Functions --------------------------------------------------------
if (LLVM_FOUND AND LIBCXXABI_USING_INSTALLED_LLVM)
include(LLVMConfig) # For TARGET_TRIPLE
else()
if (WIN32)
set(LLVM_ON_UNIX 0)
set(LLVM_ON_WIN32 1)
else()
set(LLVM_ON_UNIX 1)
set(LLVM_ON_WIN32 0)
endif()
endif()
if (LLVM_FOUND)
include(AddLLVM OPTIONAL)
endif()
# LLVM Options --------------------------------------------------------------
if (NOT DEFINED LLVM_INCLUDE_TESTS)
set(LLVM_INCLUDE_TESTS ${LLVM_FOUND})
endif()
if (NOT DEFINED LLVM_INCLUDE_DOCS)
set(LLVM_INCLUDE_DOCS ${LLVM_FOUND})
endif()
if (NOT DEFINED LLVM_ENABLE_SPHINX)
set(LLVM_ENABLE_SPHINX OFF)
endif()
# Required LIT Configuration ------------------------------------------------
# Define the default arguments to use with 'lit', and an option for the user
# to override.
set(LIT_ARGS_DEFAULT "-sv --show-xfail --show-unsupported")
if (MSVC OR XCODE)
set(LIT_ARGS_DEFAULT "${LIT_ARGS_DEFAULT} --no-progress-bar")
endif()
set(LLVM_LIT_ARGS "${LIT_ARGS_DEFAULT}" CACHE STRING "Default options for lit")
# Required doc configuration
if (LLVM_ENABLE_SPHINX)
find_package(Sphinx REQUIRED)
endif()
if (LLVM_ON_UNIX AND NOT APPLE)
set(LLVM_HAVE_LINK_VERSION_SCRIPT 1)
else()
set(LLVM_HAVE_LINK_VERSION_SCRIPT 0)
endif()
endmacro(configure_out_of_tree_llvm)
configure_out_of_tree_llvm()
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