include(LLVMProcessSources)
include(LLVM-Config)
include(DetermineGCCCompatible)
function(llvm_update_compile_flags name)
get_property(sources TARGET ${name} PROPERTY SOURCES)
if("${sources}" MATCHES "\\.c(;|$)")
set(update_src_props ON)
endif()
# LLVM_REQUIRES_EH is an internal flag that individual targets can use to
# force EH
if(LLVM_REQUIRES_EH OR LLVM_ENABLE_EH)
if(NOT (LLVM_REQUIRES_RTTI OR LLVM_ENABLE_RTTI))
message(AUTHOR_WARNING "Exception handling requires RTTI. Enabling RTTI for ${name}")
set(LLVM_REQUIRES_RTTI ON)
endif()
if(MSVC)
list(APPEND LLVM_COMPILE_FLAGS "/EHsc")
endif()
else()
if(LLVM_COMPILER_IS_GCC_COMPATIBLE)
list(APPEND LLVM_COMPILE_FLAGS "-fno-exceptions")
elseif(MSVC)
list(APPEND LLVM_COMPILE_DEFINITIONS _HAS_EXCEPTIONS=0)
list(APPEND LLVM_COMPILE_FLAGS "/EHs-c-")
endif()
endif()
# LLVM_REQUIRES_RTTI is an internal flag that individual
# targets can use to force RTTI
set(LLVM_CONFIG_HAS_RTTI YES CACHE INTERNAL "")
if(NOT (LLVM_REQUIRES_RTTI OR LLVM_ENABLE_RTTI))
set(LLVM_CONFIG_HAS_RTTI NO CACHE INTERNAL "")
list(APPEND LLVM_COMPILE_DEFINITIONS GTEST_HAS_RTTI=0)
if (LLVM_COMPILER_IS_GCC_COMPATIBLE)
list(APPEND LLVM_COMPILE_FLAGS "-fno-rtti")
elseif (MSVC)
list(APPEND LLVM_COMPILE_FLAGS "/GR-")
endif ()
elseif(MSVC)
list(APPEND LLVM_COMPILE_FLAGS "/GR")
endif()
# Assume that;
# - LLVM_COMPILE_FLAGS is list.
# - PROPERTY COMPILE_FLAGS is string.
string(REPLACE ";" " " target_compile_flags " ${LLVM_COMPILE_FLAGS}")
if(update_src_props)
foreach(fn ${sources})
get_filename_component(suf ${fn} EXT)
if("${suf}" STREQUAL ".cpp")
set_property(SOURCE ${fn} APPEND_STRING PROPERTY
COMPILE_FLAGS "${target_compile_flags}")
endif()
endforeach()
else()
# Update target props, since all sources are C++.
set_property(TARGET ${name} APPEND_STRING PROPERTY
COMPILE_FLAGS "${target_compile_flags}")
endif()
set_property(TARGET ${name} APPEND PROPERTY COMPILE_DEFINITIONS ${LLVM_COMPILE_DEFINITIONS})
endfunction()
function(add_llvm_symbol_exports target_name export_file)
if(${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
set(native_export_file "${target_name}.exports")
add_custom_command(OUTPUT ${native_export_file}
COMMAND sed -e "s/^/_/" < ${export_file} > ${native_export_file}
DEPENDS ${export_file}
VERBATIM
COMMENT "Creating export file for ${target_name}")
set_property(TARGET ${target_name} APPEND_STRING PROPERTY
LINK_FLAGS " -Wl,-exported_symbols_list,${CMAKE_CURRENT_BINARY_DIR}/${native_export_file}")
elseif(${CMAKE_SYSTEM_NAME} MATCHES "AIX")
set_property(TARGET ${target_name} APPEND_STRING PROPERTY
LINK_FLAGS " -Wl,-bE:${export_file}")
elseif(LLVM_HAVE_LINK_VERSION_SCRIPT)
# Gold and BFD ld require a version script rather than a plain list.
set(native_export_file "${target_name}.exports")
# FIXME: Don't write the "local:" line on OpenBSD.
# in the export file, also add a linker script to version LLVM symbols (form: LLVM_N.M)
add_custom_command(OUTPUT ${native_export_file}
COMMAND echo "LLVM_${LLVM_VERSION_MAJOR}.${LLVM_VERSION_MINOR} {" > ${native_export_file}
COMMAND grep -q "[[:alnum:]]" ${export_file} && echo " global:" >> ${native_export_file} || :
COMMAND sed -e "s/$/;/" -e "s/^/ /" < ${export_file} >> ${native_export_file}
COMMAND echo " local: *;" >> ${native_export_file}
COMMAND echo "};" >> ${native_export_file}
DEPENDS ${export_file}
VERBATIM
COMMENT "Creating export file for ${target_name}")
if (${LLVM_LINKER_IS_SOLARISLD})
set_property(TARGET ${target_name} APPEND_STRING PROPERTY
LINK_FLAGS " -Wl,-M,${CMAKE_CURRENT_BINARY_DIR}/${native_export_file}")
else()
set_property(TARGET ${target_name} APPEND_STRING PROPERTY
LINK_FLAGS " -Wl,--version-script,${CMAKE_CURRENT_BINARY_DIR}/${native_export_file}")
endif()
else()
set(native_export_file "${target_name}.def")
add_custom_command(OUTPUT ${native_export_file}
COMMAND ${PYTHON_EXECUTABLE} -c "import sys;print(''.join(['EXPORTS\\n']+sys.stdin.readlines(),))"
< ${export_file} > ${native_export_file}
DEPENDS ${export_file}
VERBATIM
COMMENT "Creating export file for ${target_name}")
set(export_file_linker_flag "${CMAKE_CURRENT_BINARY_DIR}/${native_export_file}")
if(MSVC)
set(export_file_linker_flag "/DEF:\"${export_file_linker_flag}\"")
endif()
set_property(TARGET ${target_name} APPEND_STRING PROPERTY
LINK_FLAGS " ${export_file_linker_flag}")
endif()
add_custom_target(${target_name}_exports DEPENDS ${native_export_file})
set_target_properties(${target_name}_exports PROPERTIES FOLDER "Misc")
get_property(srcs TARGET ${target_name} PROPERTY SOURCES)
foreach(src ${srcs})
get_filename_component(extension ${src} EXT)
if(extension STREQUAL ".cpp")
set(first_source_file ${src})
break()
endif()
endforeach()
# Force re-linking when the exports file changes. Actually, it
# forces recompilation of the source file. The LINK_DEPENDS target
# property only works for makefile-based generators.
# FIXME: This is not safe because this will create the same target
# ${native_export_file} in several different file:
# - One where we emitted ${target_name}_exports
# - One where we emitted the build command for the following object.
# set_property(SOURCE ${first_source_file} APPEND PROPERTY
# OBJECT_DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/${native_export_file})
set_property(DIRECTORY APPEND
PROPERTY ADDITIONAL_MAKE_CLEAN_FILES ${native_export_file})
add_dependencies(${target_name} ${target_name}_exports)
# Add dependency to *_exports later -- CMake issue 14747
list(APPEND LLVM_COMMON_DEPENDS ${target_name}_exports)
set(LLVM_COMMON_DEPENDS ${LLVM_COMMON_DEPENDS} PARENT_SCOPE)
endfunction(add_llvm_symbol_exports)
if(NOT WIN32 AND NOT APPLE)
# Detect what linker we have here
execute_process(
COMMAND ${CMAKE_C_COMPILER} -Wl,--version
OUTPUT_VARIABLE stdout
ERROR_VARIABLE stderr
)
set(LLVM_LINKER_DETECTED ON)
if("${stdout}" MATCHES "GNU gold")
set(LLVM_LINKER_IS_GOLD ON)
message(STATUS "Linker detection: GNU Gold")
elseif("${stdout}" MATCHES "^LLD")
set(LLVM_LINKER_IS_LLD ON)
message(STATUS "Linker detection: LLD")
elseif("${stdout}" MATCHES "GNU ld")
set(LLVM_LINKER_IS_GNULD ON)
message(STATUS "Linker detection: GNU ld")
elseif("${stderr}" MATCHES "Solaris Link Editors")
set(LLVM_LINKER_IS_SOLARISLD ON)
message(STATUS "Linker detection: Solaris ld")
else()
set(LLVM_LINKER_DETECTED OFF)
message(STATUS "Linker detection: unknown")
endif()
endif()
function(add_link_opts target_name)
# Don't use linker optimizations in debug builds since it slows down the
# linker in a context where the optimizations are not important.
if (NOT uppercase_CMAKE_BUILD_TYPE STREQUAL "DEBUG")
# Pass -O3 to the linker. This enabled different optimizations on different
# linkers.
if(NOT (${CMAKE_SYSTEM_NAME} MATCHES "Darwin|SunOS|AIX" OR WIN32))
set_property(TARGET ${target_name} APPEND_STRING PROPERTY
LINK_FLAGS " -Wl,-O3")
endif()
if(LLVM_LINKER_IS_GOLD)
# With gold gc-sections is always safe.
set_property(TARGET ${target_name} APPEND_STRING PROPERTY
LINK_FLAGS " -Wl,--gc-sections")
# Note that there is a bug with -Wl,--icf=safe so it is not safe
# to enable. See https://sourceware.org/bugzilla/show_bug.cgi?id=17704.
endif()
if(NOT LLVM_NO_DEAD_STRIP)
if(${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
# ld64's implementation of -dead_strip breaks tools that use plugins.
set_property(TARGET ${target_name} APPEND_STRING PROPERTY
LINK_FLAGS " -Wl,-dead_strip")
elseif(${CMAKE_SYSTEM_NAME} MATCHES "SunOS")
set_property(TARGET ${target_name} APPEND_STRING PROPERTY
LINK_FLAGS " -Wl,-z -Wl,discard-unused=sections")
elseif(NOT WIN32 AND NOT LLVM_LINKER_IS_GOLD)
# Object files are compiled with -ffunction-data-sections.
# Versions of bfd ld < 2.23.1 have a bug in --gc-sections that breaks
# tools that use plugins. Always pass --gc-sections once we require
# a newer linker.
set_property(TARGET ${target_name} APPEND_STRING PROPERTY
LINK_FLAGS " -Wl,--gc-sections")
endif()
endif()
endif()
endfunction(add_link_opts)
# Set each output directory according to ${CMAKE_CONFIGURATION_TYPES}.
# Note: Don't set variables CMAKE_*_OUTPUT_DIRECTORY any more,
# or a certain builder, for eaxample, msbuild.exe, would be confused.
function(set_output_directory target)
cmake_parse_arguments(ARG "" "BINARY_DIR;LIBRARY_DIR" "" ${ARGN})
# module_dir -- corresponding to LIBRARY_OUTPUT_DIRECTORY.
# It affects output of add_library(MODULE).
if(WIN32 OR CYGWIN)
# DLL platform
set(module_dir ${ARG_BINARY_DIR})
else()
set(module_dir ${ARG_LIBRARY_DIR})
endif()
if(NOT "${CMAKE_CFG_INTDIR}" STREQUAL ".")
foreach(build_mode ${CMAKE_CONFIGURATION_TYPES})
string(TOUPPER "${build_mode}" CONFIG_SUFFIX)
if(ARG_BINARY_DIR)
string(REPLACE ${CMAKE_CFG_INTDIR} ${build_mode} bi ${ARG_BINARY_DIR})
set_target_properties(${target} PROPERTIES "RUNTIME_OUTPUT_DIRECTORY_${CONFIG_SUFFIX}" ${bi})
endif()
if(ARG_LIBRARY_DIR)
string(REPLACE ${CMAKE_CFG_INTDIR} ${build_mode} li ${ARG_LIBRARY_DIR})
set_target_properties(${target} PROPERTIES "ARCHIVE_OUTPUT_DIRECTORY_${CONFIG_SUFFIX}" ${li})
endif()
if(module_dir)
string(REPLACE ${CMAKE_CFG_INTDIR} ${build_mode} mi ${module_dir})
set_target_properties(${target} PROPERTIES "LIBRARY_OUTPUT_DIRECTORY_${CONFIG_SUFFIX}" ${mi})
endif()
endforeach()
else()
if(ARG_BINARY_DIR)
set_target_properties(${target} PROPERTIES RUNTIME_OUTPUT_DIRECTORY ${ARG_BINARY_DIR})
endif()
if(ARG_LIBRARY_DIR)
set_target_properties(${target} PROPERTIES ARCHIVE_OUTPUT_DIRECTORY ${ARG_LIBRARY_DIR})
endif()
if(module_dir)
set_target_properties(${target} PROPERTIES LIBRARY_OUTPUT_DIRECTORY ${module_dir})
endif()
endif()
endfunction()
# If on Windows and building with MSVC, add the resource script containing the
# VERSIONINFO data to the project. This embeds version resource information
# into the output .exe or .dll.
# TODO: Enable for MinGW Windows builds too.
#
function(add_windows_version_resource_file OUT_VAR)
set(sources ${ARGN})
if (MSVC)
set(resource_file ${LLVM_SOURCE_DIR}/resources/windows_version_resource.rc)
if(EXISTS ${resource_file})
set(sources ${sources} ${resource_file})
source_group("Resource Files" ${resource_file})
set(windows_resource_file ${resource_file} PARENT_SCOPE)
endif()
endif(MSVC)
set(${OUT_VAR} ${sources} PARENT_SCOPE)
endfunction(add_windows_version_resource_file)
# set_windows_version_resource_properties(name resource_file...
# VERSION_MAJOR int
# Optional major version number (defaults to LLVM_VERSION_MAJOR)
# VERSION_MINOR int
# Optional minor version number (defaults to LLVM_VERSION_MINOR)
# VERSION_PATCHLEVEL int
# Optional patchlevel version number (defaults to LLVM_VERSION_PATCH)
# VERSION_STRING
# Optional version string (defaults to PACKAGE_VERSION)
# PRODUCT_NAME
# Optional product name string (defaults to "LLVM")
# )
function(set_windows_version_resource_properties name resource_file)
cmake_parse_arguments(ARG
""
"VERSION_MAJOR;VERSION_MINOR;VERSION_PATCHLEVEL;VERSION_STRING;PRODUCT_NAME"
""
${ARGN})
if (NOT DEFINED ARG_VERSION_MAJOR)
set(ARG_VERSION_MAJOR ${LLVM_VERSION_MAJOR})
endif()
if (NOT DEFINED ARG_VERSION_MINOR)
set(ARG_VERSION_MINOR ${LLVM_VERSION_MINOR})
endif()
if (NOT DEFINED ARG_VERSION_PATCHLEVEL)
set(ARG_VERSION_PATCHLEVEL ${LLVM_VERSION_PATCH})
endif()
if (NOT DEFINED ARG_VERSION_STRING)
set(ARG_VERSION_STRING ${PACKAGE_VERSION})
endif()
if (NOT DEFINED ARG_PRODUCT_NAME)
set(ARG_PRODUCT_NAME "LLVM")
endif()
set_property(SOURCE ${resource_file}
PROPERTY COMPILE_FLAGS /nologo)
set_property(SOURCE ${resource_file}
PROPERTY COMPILE_DEFINITIONS
"RC_VERSION_FIELD_1=${ARG_VERSION_MAJOR}"
"RC_VERSION_FIELD_2=${ARG_VERSION_MINOR}"
"RC_VERSION_FIELD_3=${ARG_VERSION_PATCHLEVEL}"
"RC_VERSION_FIELD_4=0"
"RC_FILE_VERSION=\"${ARG_VERSION_STRING}\""
"RC_INTERNAL_NAME=\"${name}\""
"RC_PRODUCT_NAME=\"${ARG_PRODUCT_NAME}\""
"RC_PRODUCT_VERSION=\"${ARG_VERSION_STRING}\"")
endfunction(set_windows_version_resource_properties)
# llvm_add_library(name sources...
# SHARED;STATIC
# STATIC by default w/o BUILD_SHARED_LIBS.
# SHARED by default w/ BUILD_SHARED_LIBS.
# OBJECT
# Also create an OBJECT library target. Default if STATIC && SHARED.
# MODULE
# Target ${name} might not be created on unsupported platforms.
# Check with "if(TARGET ${name})".
# DISABLE_LLVM_LINK_LLVM_DYLIB
# Do not link this library to libLLVM, even if
# LLVM_LINK_LLVM_DYLIB is enabled.
# OUTPUT_NAME name
# Corresponds to OUTPUT_NAME in target properties.
# DEPENDS targets...
# Same semantics as add_dependencies().
# LINK_COMPONENTS components...
# Same as the variable LLVM_LINK_COMPONENTS.
# LINK_LIBS lib_targets...
# Same semantics as target_link_libraries().
# ADDITIONAL_HEADERS
# May specify header files for IDE generators.
# SONAME
# Should set SONAME link flags and create symlinks
# PLUGIN_TOOL
# The tool (i.e. cmake target) that this plugin will link against
# )
function(llvm_add_library name)
cmake_parse_arguments(ARG
"MODULE;SHARED;STATIC;OBJECT;DISABLE_LLVM_LINK_LLVM_DYLIB;SONAME"
"OUTPUT_NAME;PLUGIN_TOOL"
"ADDITIONAL_HEADERS;DEPENDS;LINK_COMPONENTS;LINK_LIBS;OBJLIBS"
${ARGN})
list(APPEND LLVM_COMMON_DEPENDS ${ARG_DEPENDS})
if(ARG_ADDITIONAL_HEADERS)
# Pass through ADDITIONAL_HEADERS.
set(ARG_ADDITIONAL_HEADERS ADDITIONAL_HEADERS ${ARG_ADDITIONAL_HEADERS})
endif()
if(ARG_OBJLIBS)
set(ALL_FILES ${ARG_OBJLIBS})
else()
llvm_process_sources(ALL_FILES ${ARG_UNPARSED_ARGUMENTS} ${ARG_ADDITIONAL_HEADERS})
endif()
if(ARG_MODULE)
if(ARG_SHARED OR ARG_STATIC)
message(WARNING "MODULE with SHARED|STATIC doesn't make sense.")
endif()
# Plugins that link against a tool are allowed even when plugins in general are not
if(NOT LLVM_ENABLE_PLUGINS AND NOT (ARG_PLUGIN_TOOL AND LLVM_EXPORT_SYMBOLS_FOR_PLUGINS))
message(STATUS "${name} ignored -- Loadable modules not supported on this platform.")
return()
endif()
else()
if(ARG_PLUGIN_TOOL)
message(WARNING "PLUGIN_TOOL without MODULE doesn't make sense.")
endif()
if(BUILD_SHARED_LIBS AND NOT ARG_STATIC)
set(ARG_SHARED TRUE)
endif()
if(NOT ARG_SHARED)
set(ARG_STATIC TRUE)
endif()
endif()
# Generate objlib
if((ARG_SHARED AND ARG_STATIC) OR ARG_OBJECT)
# Generate an obj library for both targets.
set(obj_name "obj.${name}")
add_library(${obj_name} OBJECT EXCLUDE_FROM_ALL
${ALL_FILES}
)
llvm_update_compile_flags(${obj_name})
set(ALL_FILES "$<TARGET_OBJECTS:${obj_name}>")
# Do add_dependencies(obj) later due to CMake issue 14747.
list(APPEND objlibs ${obj_name})
set_target_properties(${obj_name} PROPERTIES FOLDER "Object Libraries")
endif()
if(ARG_SHARED AND ARG_STATIC)
# static
set(name_static "${name}_static")
if(ARG_OUTPUT_NAME)
set(output_name OUTPUT_NAME "${ARG_OUTPUT_NAME}")
endif()
# DEPENDS has been appended to LLVM_COMMON_LIBS.
llvm_add_library(${name_static} STATIC
${output_name}
OBJLIBS ${ALL_FILES} # objlib
LINK_LIBS ${ARG_LINK_LIBS}
LINK_COMPONENTS ${ARG_LINK_COMPONENTS}
)
# FIXME: Add name_static to anywhere in TARGET ${name}'s PROPERTY.
set(ARG_STATIC)
endif()
if(ARG_MODULE)
add_library(${name} MODULE ${ALL_FILES})
llvm_setup_rpath(${name})
elseif(ARG_SHARED)
add_windows_version_resource_file(ALL_FILES ${ALL_FILES})
add_library(${name} SHARED ${ALL_FILES})
llvm_setup_rpath(${name})
else()
add_library(${name} STATIC ${ALL_FILES})
endif()
setup_dependency_debugging(${name} ${LLVM_COMMON_DEPENDS})
if(DEFINED windows_resource_file)
set_windows_version_resource_properties(${name} ${windows_resource_file})
set(windows_resource_file ${windows_resource_file} PARENT_SCOPE)
endif()
set_output_directory(${name} BINARY_DIR ${LLVM_RUNTIME_OUTPUT_INTDIR} LIBRARY_DIR ${LLVM_LIBRARY_OUTPUT_INTDIR})
# $<TARGET_OBJECTS> doesn't require compile flags.
if(NOT obj_name)
llvm_update_compile_flags(${name})
endif()
add_link_opts( ${name} )
if(ARG_OUTPUT_NAME)
set_target_properties(${name}
PROPERTIES
OUTPUT_NAME ${ARG_OUTPUT_NAME}
)
endif()
if(ARG_MODULE)
set_target_properties(${name} PROPERTIES
PREFIX ""
SUFFIX ${LLVM_PLUGIN_EXT}
)
endif()
if(ARG_SHARED)
if(WIN32)
set_target_properties(${name} PROPERTIES
PREFIX ""
)
endif()
# Set SOVERSION on shared libraries that lack explicit SONAME
# specifier, on *nix systems that are not Darwin.
if(UNIX AND NOT APPLE AND NOT ARG_SONAME)
set_target_properties(${name}
PROPERTIES
# Since 4.0.0, the ABI version is indicated by the major version
SOVERSION ${LLVM_VERSION_MAJOR}
VERSION ${LLVM_VERSION_MAJOR}.${LLVM_VERSION_MINOR}.${LLVM_VERSION_PATCH}${LLVM_VERSION_SUFFIX})
endif()
endif()
if(ARG_MODULE OR ARG_SHARED)
# Do not add -Dname_EXPORTS to the command-line when building files in this
# target. Doing so is actively harmful for the modules build because it
# creates extra module variants, and not useful because we don't use these
# macros.
set_target_properties( ${name} PROPERTIES DEFINE_SYMBOL "" )
if (LLVM_EXPORTED_SYMBOL_FILE)
add_llvm_symbol_exports( ${name} ${LLVM_EXPORTED_SYMBOL_FILE} )
endif()
endif()
if(ARG_SHARED AND UNIX)
if(NOT APPLE AND ARG_SONAME)
get_target_property(output_name ${name} OUTPUT_NAME)
if(${output_name} STREQUAL "output_name-NOTFOUND")
set(output_name ${name})
endif()
set(library_name ${output_name}-${LLVM_VERSION_MAJOR}.${LLVM_VERSION_MINOR}${LLVM_VERSION_SUFFIX})
set(api_name ${output_name}-${LLVM_VERSION_MAJOR}.${LLVM_VERSION_MINOR}.${LLVM_VERSION_PATCH}${LLVM_VERSION_SUFFIX})
set_target_properties(${name} PROPERTIES OUTPUT_NAME ${library_name})
llvm_install_library_symlink(${api_name} ${library_name} SHARED
COMPONENT ${name}
ALWAYS_GENERATE)
llvm_install_library_symlink(${output_name} ${library_name} SHARED
COMPONENT ${name}
ALWAYS_GENERATE)
endif()
endif()
if(ARG_MODULE AND LLVM_EXPORT_SYMBOLS_FOR_PLUGINS AND ARG_PLUGIN_TOOL AND (WIN32 OR CYGWIN))
# On DLL platforms symbols are imported from the tool by linking against it.
set(llvm_libs ${ARG_PLUGIN_TOOL})
elseif (DEFINED LLVM_LINK_COMPONENTS OR DEFINED ARG_LINK_COMPONENTS)
if (LLVM_LINK_LLVM_DYLIB AND NOT ARG_DISABLE_LLVM_LINK_LLVM_DYLIB)
set(llvm_libs LLVM)
else()
llvm_map_components_to_libnames(llvm_libs
${ARG_LINK_COMPONENTS}
${LLVM_LINK_COMPONENTS}
)
endif()
else()
# Components have not been defined explicitly in CMake, so add the
# dependency information for this library as defined by LLVMBuild.
#
# It would be nice to verify that we have the dependencies for this library
# name, but using get_property(... SET) doesn't suffice to determine if a
# property has been set to an empty value.
get_property(lib_deps GLOBAL PROPERTY LLVMBUILD_LIB_DEPS_${name})
endif()
if(ARG_STATIC)
set(libtype INTERFACE)
else()
# We can use PRIVATE since SO knows its dependent libs.
set(libtype PRIVATE)
endif()
target_link_libraries(${name} ${libtype}
${ARG_LINK_LIBS}
${lib_deps}
${llvm_libs}
)
if(LLVM_COMMON_DEPENDS)
add_dependencies(${name} ${LLVM_COMMON_DEPENDS})
# Add dependencies also to objlibs.
# CMake issue 14747 -- add_dependencies() might be ignored to objlib's user.
foreach(objlib ${objlibs})
add_dependencies(${objlib} ${LLVM_COMMON_DEPENDS})
endforeach()
endif()
if(ARG_SHARED OR ARG_MODULE)
llvm_externalize_debuginfo(${name})
endif()
endfunction()
macro(add_llvm_library name)
cmake_parse_arguments(ARG
"SHARED;BUILDTREE_ONLY"
""
""
${ARGN})
if( BUILD_SHARED_LIBS OR ARG_SHARED )
llvm_add_library(${name} SHARED ${ARG_UNPARSED_ARGUMENTS})
else()
llvm_add_library(${name} ${ARG_UNPARSED_ARGUMENTS})
endif()
# Libraries that are meant to only be exposed via the build tree only are
# never installed and are only exported as a target in the special build tree
# config file.
if (NOT ARG_BUILDTREE_ONLY)
set_property( GLOBAL APPEND PROPERTY LLVM_LIBS ${name} )
endif()
if( EXCLUDE_FROM_ALL )
set_target_properties( ${name} PROPERTIES EXCLUDE_FROM_ALL ON)
elseif(ARG_BUILDTREE_ONLY)
set_property(GLOBAL APPEND PROPERTY LLVM_EXPORTS_BUILDTREE_ONLY ${name})
else()
if (NOT LLVM_INSTALL_TOOLCHAIN_ONLY OR ${name} STREQUAL "LTO" OR
(LLVM_LINK_LLVM_DYLIB AND ${name} STREQUAL "LLVM"))
set(install_dir lib${LLVM_LIBDIR_SUFFIX})
if(ARG_SHARED OR BUILD_SHARED_LIBS)
if(WIN32 OR CYGWIN OR MINGW)
set(install_type RUNTIME)
set(install_dir bin)
else()
set(install_type LIBRARY)
endif()
else()
set(install_type ARCHIVE)
endif()
if(${name} IN_LIST LLVM_DISTRIBUTION_COMPONENTS OR
NOT LLVM_DISTRIBUTION_COMPONENTS)
set(export_to_llvmexports EXPORT LLVMExports)
set_property(GLOBAL PROPERTY LLVM_HAS_EXPORTS True)
endif()
install(TARGETS ${name}
${export_to_llvmexports}
${install_type} DESTINATION ${install_dir}
COMPONENT ${name})
if (NOT CMAKE_CONFIGURATION_TYPES)
add_custom_target(install-${name}
DEPENDS ${name}
COMMAND "${CMAKE_COMMAND}"
-DCMAKE_INSTALL_COMPONENT=${name}
-P "${CMAKE_BINARY_DIR}/cmake_install.cmake")
endif()
endif()
set_property(GLOBAL APPEND PROPERTY LLVM_EXPORTS ${name})
endif()
set_target_properties(${name} PROPERTIES FOLDER "Libraries")
endmacro(add_llvm_library name)
macro(add_llvm_loadable_module name)
llvm_add_library(${name} MODULE ${ARGN})
if(NOT TARGET ${name})
# Add empty "phony" target
add_custom_target(${name})
else()
if( EXCLUDE_FROM_ALL )
set_target_properties( ${name} PROPERTIES EXCLUDE_FROM_ALL ON)
else()
if (NOT LLVM_INSTALL_TOOLCHAIN_ONLY)
if(WIN32 OR CYGWIN)
# DLL platform
set(dlldir "bin")
else()
set(dlldir "lib${LLVM_LIBDIR_SUFFIX}")
endif()
if(${name} IN_LIST LLVM_DISTRIBUTION_COMPONENTS OR
NOT LLVM_DISTRIBUTION_COMPONENTS)
set(export_to_llvmexports EXPORT LLVMExports)
set_property(GLOBAL PROPERTY LLVM_HAS_EXPORTS True)
endif()
install(TARGETS ${name}
${export_to_llvmexports}
LIBRARY DESTINATION ${dlldir}
ARCHIVE DESTINATION lib${LLVM_LIBDIR_SUFFIX})
endif()
set_property(GLOBAL APPEND PROPERTY LLVM_EXPORTS ${name})
endif()
endif()
set_target_properties(${name} PROPERTIES FOLDER "Loadable modules")
endmacro(add_llvm_loadable_module name)
macro(add_llvm_executable name)
cmake_parse_arguments(ARG "DISABLE_LLVM_LINK_LLVM_DYLIB;IGNORE_EXTERNALIZE_DEBUGINFO;NO_INSTALL_RPATH" "" "DEPENDS" ${ARGN})
llvm_process_sources( ALL_FILES ${ARG_UNPARSED_ARGUMENTS} )
list(APPEND LLVM_COMMON_DEPENDS ${ARG_DEPENDS})
# Generate objlib
if(LLVM_ENABLE_OBJLIB)
# Generate an obj library for both targets.
set(obj_name "obj.${name}")
add_library(${obj_name} OBJECT EXCLUDE_FROM_ALL
${ALL_FILES}
)
llvm_update_compile_flags(${obj_name})
set(ALL_FILES "$<TARGET_OBJECTS:${obj_name}>")
set_target_properties(${obj_name} PROPERTIES FOLDER "Object Libraries")
endif()
add_windows_version_resource_file(ALL_FILES ${ALL_FILES})
if(XCODE)
# Note: the dummy.cpp source file provides no definitions. However,
# it forces Xcode to properly link the static library.
list(APPEND ALL_FILES "${LLVM_MAIN_SRC_DIR}/cmake/dummy.cpp")
endif()
if( EXCLUDE_FROM_ALL )
add_executable(${name} EXCLUDE_FROM_ALL ${ALL_FILES})
else()
add_executable(${name} ${ALL_FILES})
endif()
setup_dependency_debugging(${name} ${LLVM_COMMON_DEPENDS})
if(NOT ARG_NO_INSTALL_RPATH)
llvm_setup_rpath(${name})
endif()
if(DEFINED windows_resource_file)
set_windows_version_resource_properties(${name} ${windows_resource_file})
endif()
# $<TARGET_OBJECTS> doesn't require compile flags.
if(NOT LLVM_ENABLE_OBJLIB)
llvm_update_compile_flags(${name})
endif()
add_link_opts( ${name} )
# Do not add -Dname_EXPORTS to the command-line when building files in this
# target. Doing so is actively harmful for the modules build because it
# creates extra module variants, and not useful because we don't use these
# macros.
set_target_properties( ${name} PROPERTIES DEFINE_SYMBOL "" )
if (LLVM_EXPORTED_SYMBOL_FILE)
add_llvm_symbol_exports( ${name} ${LLVM_EXPORTED_SYMBOL_FILE} )
endif(LLVM_EXPORTED_SYMBOL_FILE)
if (LLVM_LINK_LLVM_DYLIB AND NOT ARG_DISABLE_LLVM_LINK_LLVM_DYLIB)
set(USE_SHARED USE_SHARED)
endif()
set(EXCLUDE_FROM_ALL OFF)
set_output_directory(${name} BINARY_DIR ${LLVM_RUNTIME_OUTPUT_INTDIR} LIBRARY_DIR ${LLVM_LIBRARY_OUTPUT_INTDIR})
llvm_config( ${name} ${USE_SHARED} ${LLVM_LINK_COMPONENTS} )
if( LLVM_COMMON_DEPENDS )
add_dependencies( ${name} ${LLVM_COMMON_DEPENDS} )
endif( LLVM_COMMON_DEPENDS )
if(NOT ARG_IGNORE_EXTERNALIZE_DEBUGINFO)
llvm_externalize_debuginfo(${name})
endif()
if (LLVM_PTHREAD_LIB)
# libpthreads overrides some standard library symbols, so main
# executable must be linked with it in order to provide consistent
# API for all shared libaries loaded by this executable.
target_link_libraries(${name} ${LLVM_PTHREAD_LIB})
endif()
endmacro(add_llvm_executable name)
function(export_executable_symbols target)
if (LLVM_EXPORTED_SYMBOL_FILE)
# The symbol file should contain the symbols we want the executable to
# export
set_target_properties(${target} PROPERTIES ENABLE_EXPORTS 1)
elseif (LLVM_EXPORT_SYMBOLS_FOR_PLUGINS)
# Extract the symbols to export from the static libraries that the
# executable links against.
set_target_properties(${target} PROPERTIES ENABLE_EXPORTS 1)
set(exported_symbol_file ${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_CFG_INTDIR}/${target}.symbols)
# We need to consider not just the direct link dependencies, but also the
# transitive link dependencies. Do this by starting with the set of direct
# dependencies, then the dependencies of those dependencies, and so on.
get_target_property(new_libs ${target} LINK_LIBRARIES)
set(link_libs ${new_libs})
while(NOT "${new_libs}" STREQUAL "")
foreach(lib ${new_libs})
if(TARGET ${lib})
get_target_property(lib_type ${lib} TYPE)
if("${lib_type}" STREQUAL "STATIC_LIBRARY")
list(APPEND static_libs ${lib})
else()
list(APPEND other_libs ${lib})
endif()
get_target_property(transitive_libs ${lib} INTERFACE_LINK_LIBRARIES)
foreach(transitive_lib ${transitive_libs})
list(FIND link_libs ${transitive_lib} idx)
if(TARGET ${transitive_lib} AND idx EQUAL -1)
list(APPEND newer_libs ${transitive_lib})
list(APPEND link_libs ${transitive_lib})
endif()
endforeach(transitive_lib)
endif()
endforeach(lib)
set(new_libs ${newer_libs})
set(newer_libs "")
endwhile()
if (MSVC)
set(mangling microsoft)
else()
set(mangling itanium)
endif()
add_custom_command(OUTPUT ${exported_symbol_file}
COMMAND ${PYTHON_EXECUTABLE} ${LLVM_MAIN_SRC_DIR}/utils/extract_symbols.py --mangling=${mangling} ${static_libs} -o ${exported_symbol_file}
WORKING_DIRECTORY ${LLVM_LIBRARY_OUTPUT_INTDIR}
DEPENDS ${LLVM_MAIN_SRC_DIR}/utils/extract_symbols.py ${static_libs}
VERBATIM
COMMENT "Generating export list for ${target}")
add_llvm_symbol_exports( ${target} ${exported_symbol_file} )
# If something links against this executable then we want a
# transitive link against only the libraries whose symbols
# we aren't exporting.
set_target_properties(${target} PROPERTIES INTERFACE_LINK_LIBRARIES "${other_libs}")
# The default import library suffix that cmake uses for cygwin/mingw is
# ".dll.a", but for clang.exe that causes a collision with libclang.dll,
# where the import libraries of both get named libclang.dll.a. Use a suffix
# of ".exe.a" to avoid this.
if(CYGWIN OR MINGW)
set_target_properties(${target} PROPERTIES IMPORT_SUFFIX ".exe.a")
endif()
elseif(NOT (WIN32 OR CYGWIN))
# On Windows auto-exporting everything doesn't work because of the limit on
# the size of the exported symbol table, but on other platforms we can do
# it without any trouble.
set_target_properties(${target} PROPERTIES ENABLE_EXPORTS 1)
if (APPLE)
set_property(TARGET ${target} APPEND_STRING PROPERTY
LINK_FLAGS " -rdynamic")
endif()
endif()
endfunction()
if(NOT LLVM_TOOLCHAIN_TOOLS)
set (LLVM_TOOLCHAIN_TOOLS
llvm-ar
llvm-ranlib
llvm-lib
llvm-objdump
)
endif()
macro(add_llvm_tool name)
if( NOT LLVM_BUILD_TOOLS )
set(EXCLUDE_FROM_ALL ON)
endif()
add_llvm_executable(${name} ${ARGN})
if ( ${name} IN_LIST LLVM_TOOLCHAIN_TOOLS OR NOT LLVM_INSTALL_TOOLCHAIN_ONLY)
if( LLVM_BUILD_TOOLS )
if(${name} IN_LIST LLVM_DISTRIBUTION_COMPONENTS OR
NOT LLVM_DISTRIBUTION_COMPONENTS)
set(export_to_llvmexports EXPORT LLVMExports)
set_property(GLOBAL PROPERTY LLVM_HAS_EXPORTS True)
endif()
install(TARGETS ${name}
${export_to_llvmexports}
RUNTIME DESTINATION ${LLVM_TOOLS_INSTALL_DIR}
COMPONENT ${name})
if (NOT CMAKE_CONFIGURATION_TYPES)
add_custom_target(install-${name}
DEPENDS ${name}
COMMAND "${CMAKE_COMMAND}"
-DCMAKE_INSTALL_COMPONENT=${name}
-P "${CMAKE_BINARY_DIR}/cmake_install.cmake")
endif()
endif()
endif()
if( LLVM_BUILD_TOOLS )
set_property(GLOBAL APPEND PROPERTY LLVM_EXPORTS ${name})
endif()
set_target_properties(${name} PROPERTIES FOLDER "Tools")
endmacro(add_llvm_tool name)
macro(add_llvm_example name)
if( NOT LLVM_BUILD_EXAMPLES )
set(EXCLUDE_FROM_ALL ON)
endif()
add_llvm_executable(${name} ${ARGN})
if( LLVM_BUILD_EXAMPLES )
install(TARGETS ${name} RUNTIME DESTINATION examples)
endif()
set_target_properties(${name} PROPERTIES FOLDER "Examples")
endmacro(add_llvm_example name)
# This is a macro that is used to create targets for executables that are needed
# for development, but that are not intended to be installed by default.
macro(add_llvm_utility name)
if ( NOT LLVM_BUILD_UTILS )
set(EXCLUDE_FROM_ALL ON)
endif()
add_llvm_executable(${name} DISABLE_LLVM_LINK_LLVM_DYLIB ${ARGN})
set_target_properties(${name} PROPERTIES FOLDER "Utils")
if( LLVM_INSTALL_UTILS AND LLVM_BUILD_UTILS )
install (TARGETS ${name}
RUNTIME DESTINATION ${LLVM_UTILS_INSTALL_DIR}
COMPONENT ${name})
if (NOT CMAKE_CONFIGURATION_TYPES)
add_custom_target(install-${name}
DEPENDS ${name}
COMMAND "${CMAKE_COMMAND}"
-DCMAKE_INSTALL_COMPONENT=${name}
-P "${CMAKE_BINARY_DIR}/cmake_install.cmake")
endif()
endif()
endmacro(add_llvm_utility name)
macro(add_llvm_fuzzer name)
cmake_parse_arguments(ARG "" "DUMMY_MAIN" "" ${ARGN})
if( LLVM_LIB_FUZZING_ENGINE )
set(LLVM_OPTIONAL_SOURCES ${ARG_DUMMY_MAIN})
add_llvm_executable(${name} ${ARG_UNPARSED_ARGUMENTS})
target_link_libraries(${name} ${LLVM_LIB_FUZZING_ENGINE})
set_target_properties(${name} PROPERTIES FOLDER "Fuzzers")
elseif( LLVM_USE_SANITIZE_COVERAGE )
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=fuzzer")
set(LLVM_OPTIONAL_SOURCES ${ARG_DUMMY_MAIN})
add_llvm_executable(${name} ${ARG_UNPARSED_ARGUMENTS})
set_target_properties(${name} PROPERTIES FOLDER "Fuzzers")
elseif( ARG_DUMMY_MAIN )
add_llvm_executable(${name} ${ARG_DUMMY_MAIN} ${ARG_UNPARSED_ARGUMENTS})
set_target_properties(${name} PROPERTIES FOLDER "Fuzzers")
endif()
endmacro()
macro(add_llvm_target target_name)
include_directories(BEFORE
${CMAKE_CURRENT_BINARY_DIR}
${CMAKE_CURRENT_SOURCE_DIR})
add_llvm_library(LLVM${target_name} ${ARGN})
set( CURRENT_LLVM_TARGET LLVM${target_name} )
endmacro(add_llvm_target)
function(canonicalize_tool_name name output)
string(REPLACE "${CMAKE_CURRENT_SOURCE_DIR}/" "" nameStrip ${name})
string(REPLACE "-" "_" nameUNDERSCORE ${nameStrip})
string(TOUPPER ${nameUNDERSCORE} nameUPPER)
set(${output} "${nameUPPER}" PARENT_SCOPE)
endfunction(canonicalize_tool_name)
# Custom add_subdirectory wrapper
# Takes in a project name (i.e. LLVM), the subdirectory name, and an optional
# path if it differs from the name.
macro(add_llvm_subdirectory project type name)
set(add_llvm_external_dir "${ARGN}")
if("${add_llvm_external_dir}" STREQUAL "")
set(add_llvm_external_dir ${name})
endif()
canonicalize_tool_name(${name} nameUPPER)
if(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/${add_llvm_external_dir}/CMakeLists.txt)
# Treat it as in-tree subproject.
option(${project}_${type}_${nameUPPER}_BUILD
"Whether to build ${name} as part of ${project}" On)
mark_as_advanced(${project}_${type}_${name}_BUILD)
if(${project}_${type}_${nameUPPER}_BUILD)
add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/${add_llvm_external_dir} ${add_llvm_external_dir})
# Don't process it in add_llvm_implicit_projects().
set(${project}_${type}_${nameUPPER}_BUILD OFF)
endif()
else()
set(LLVM_EXTERNAL_${nameUPPER}_SOURCE_DIR
"${LLVM_EXTERNAL_${nameUPPER}_SOURCE_DIR}"
CACHE PATH "Path to ${name} source directory")
set(${project}_${type}_${nameUPPER}_BUILD_DEFAULT ON)
if(NOT LLVM_EXTERNAL_${nameUPPER}_SOURCE_DIR OR NOT EXISTS ${LLVM_EXTERNAL_${nameUPPER}_SOURCE_DIR})
set(${project}_${type}_${nameUPPER}_BUILD_DEFAULT OFF)
endif()
if("${LLVM_EXTERNAL_${nameUPPER}_BUILD}" STREQUAL "OFF")
set(${project}_${type}_${nameUPPER}_BUILD_DEFAULT OFF)
endif()
option(${project}_${type}_${nameUPPER}_BUILD
"Whether to build ${name} as part of LLVM"
${${project}_${type}_${nameUPPER}_BUILD_DEFAULT})
if (${project}_${type}_${nameUPPER}_BUILD)
if(EXISTS ${LLVM_EXTERNAL_${nameUPPER}_SOURCE_DIR})
add_subdirectory(${LLVM_EXTERNAL_${nameUPPER}_SOURCE_DIR} ${add_llvm_external_dir})
elseif(NOT "${LLVM_EXTERNAL_${nameUPPER}_SOURCE_DIR}" STREQUAL "")
message(WARNING "Nonexistent directory for ${name}: ${LLVM_EXTERNAL_${nameUPPER}_SOURCE_DIR}")
endif()
# FIXME: It'd be redundant.
set(${project}_${type}_${nameUPPER}_BUILD Off)
endif()
endif()
endmacro()
# Add external project that may want to be built as part of llvm such as Clang,
# lld, and Polly. This adds two options. One for the source directory of the
# project, which defaults to ${CMAKE_CURRENT_SOURCE_DIR}/${name}. Another to
# enable or disable building it with everything else.
# Additional parameter can be specified as the name of directory.
macro(add_llvm_external_project name)
add_llvm_subdirectory(LLVM TOOL ${name} ${ARGN})
endmacro()
macro(add_llvm_tool_subdirectory name)
add_llvm_external_project(${name})
endmacro(add_llvm_tool_subdirectory)
function(get_project_name_from_src_var var output)
string(REGEX MATCH "LLVM_EXTERNAL_(.*)_SOURCE_DIR"
MACHED_TOOL "${var}")
if(MACHED_TOOL)
set(${output} ${CMAKE_MATCH_1} PARENT_SCOPE)
else()
set(${output} PARENT_SCOPE)
endif()
endfunction()
function(create_subdirectory_options project type)
file(GLOB sub-dirs "${CMAKE_CURRENT_SOURCE_DIR}/*")
foreach(dir ${sub-dirs})
if(IS_DIRECTORY "${dir}" AND EXISTS "${dir}/CMakeLists.txt")
canonicalize_tool_name(${dir} name)
option(${project}_${type}_${name}_BUILD
"Whether to build ${name} as part of ${project}" On)
mark_as_advanced(${project}_${type}_${name}_BUILD)
endif()
endforeach()
endfunction(create_subdirectory_options)
function(create_llvm_tool_options)
create_subdirectory_options(LLVM TOOL)
endfunction(create_llvm_tool_options)
function(llvm_add_implicit_projects project)
set(list_of_implicit_subdirs "")
file(GLOB sub-dirs "${CMAKE_CURRENT_SOURCE_DIR}/*")
foreach(dir ${sub-dirs})
if(IS_DIRECTORY "${dir}" AND EXISTS "${dir}/CMakeLists.txt")
canonicalize_tool_name(${dir} name)
if (${project}_TOOL_${name}_BUILD)
get_filename_component(fn "${dir}" NAME)
list(APPEND list_of_implicit_subdirs "${fn}")
endif()
endif()
endforeach()
foreach(external_proj ${list_of_implicit_subdirs})
add_llvm_subdirectory(${project} TOOL "${external_proj}" ${ARGN})
endforeach()
endfunction(llvm_add_implicit_projects)
function(add_llvm_implicit_projects)
llvm_add_implicit_projects(LLVM)
endfunction(add_llvm_implicit_projects)
# Generic support for adding a unittest.
function(add_unittest test_suite test_name)
if( NOT LLVM_BUILD_TESTS )
set(EXCLUDE_FROM_ALL ON)
endif()
include_directories(${LLVM_MAIN_SRC_DIR}/utils/unittest/googletest/include)
include_directories(${LLVM_MAIN_SRC_DIR}/utils/unittest/googlemock/include)
if (NOT LLVM_ENABLE_THREADS)
list(APPEND LLVM_COMPILE_DEFINITIONS GTEST_HAS_PTHREAD=0)
endif ()
if (SUPPORTS_VARIADIC_MACROS_FLAG)
list(APPEND LLVM_COMPILE_FLAGS "-Wno-variadic-macros")
endif ()
# Some parts of gtest rely on this GNU extension, don't warn on it.
if(SUPPORTS_GNU_ZERO_VARIADIC_MACRO_ARGUMENTS_FLAG)
list(APPEND LLVM_COMPILE_FLAGS "-Wno-gnu-zero-variadic-macro-arguments")
endif()
set(LLVM_REQUIRES_RTTI OFF)
list(APPEND LLVM_LINK_COMPONENTS Support) # gtest needs it for raw_ostream
add_llvm_executable(${test_name} IGNORE_EXTERNALIZE_DEBUGINFO NO_INSTALL_RPATH ${ARGN})
set(outdir ${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_CFG_INTDIR})
set_output_directory(${test_name} BINARY_DIR ${outdir} LIBRARY_DIR ${outdir})
# libpthreads overrides some standard library symbols, so main
# executable must be linked with it in order to provide consistent
# API for all shared libaries loaded by this executable.
target_link_libraries(${test_name} gtest_main gtest ${LLVM_PTHREAD_LIB})
add_dependencies(${test_suite} ${test_name})
get_target_property(test_suite_folder ${test_suite} FOLDER)
if (NOT ${test_suite_folder} STREQUAL "NOTFOUND")
set_property(TARGET ${test_name} PROPERTY FOLDER "${test_suite_folder}")
endif ()
endfunction()
function(llvm_add_go_executable binary pkgpath)
cmake_parse_arguments(ARG "ALL" "" "DEPENDS;GOFLAGS" ${ARGN})
if(LLVM_BINDINGS MATCHES "go")
# FIXME: This should depend only on the libraries Go needs.
get_property(llvmlibs GLOBAL PROPERTY LLVM_LIBS)
set(binpath ${CMAKE_BINARY_DIR}/bin/${binary}${CMAKE_EXECUTABLE_SUFFIX})
set(cc "${CMAKE_C_COMPILER} ${CMAKE_C_COMPILER_ARG1}")
set(cxx "${CMAKE_CXX_COMPILER} ${CMAKE_CXX_COMPILER_ARG1}")
set(cppflags "")
get_property(include_dirs DIRECTORY PROPERTY INCLUDE_DIRECTORIES)
foreach(d ${include_dirs})
set(cppflags "${cppflags} -I${d}")
endforeach(d)
set(ldflags "${CMAKE_EXE_LINKER_FLAGS}")
add_custom_command(OUTPUT ${binpath}
COMMAND ${CMAKE_BINARY_DIR}/bin/llvm-go "go=${GO_EXECUTABLE}" "cc=${cc}" "cxx=${cxx}" "cppflags=${cppflags}" "ldflags=${ldflags}" "packages=${LLVM_GO_PACKAGES}"
${ARG_GOFLAGS} build -o ${binpath} ${pkgpath}
DEPENDS llvm-config ${CMAKE_BINARY_DIR}/bin/llvm-go${CMAKE_EXECUTABLE_SUFFIX}
${llvmlibs} ${ARG_DEPENDS}
COMMENT "Building Go executable ${binary}"
VERBATIM)
if (ARG_ALL)
add_custom_target(${binary} ALL DEPENDS ${binpath})
else()
add_custom_target(${binary} DEPENDS ${binpath})
endif()
endif()
endfunction()
# This function canonicalize the CMake variables passed by names
# from CMake boolean to 0/1 suitable for passing into Python or C++,
# in place.
function(llvm_canonicalize_cmake_booleans)
foreach(var ${ARGN})
if(${var})
set(${var} 1 PARENT_SCOPE)
else()
set(${var} 0 PARENT_SCOPE)
endif()
endforeach()
endfunction(llvm_canonicalize_cmake_booleans)
# This function provides an automatic way to 'configure'-like generate a file
# based on a set of common and custom variables, specifically targeting the
# variables needed for the 'lit.site.cfg' files. This function bundles the
# common variables that any Lit instance is likely to need, and custom
# variables can be passed in.
function(configure_lit_site_cfg site_in site_out)
cmake_parse_arguments(ARG "" "" "MAIN_CONFIG;OUTPUT_MAPPING" ${ARGN})
if ("${ARG_MAIN_CONFIG}" STREQUAL "")
get_filename_component(INPUT_DIR ${site_in} DIRECTORY)
set(ARG_MAIN_CONFIG "${INPUT_DIR}/lit.cfg")
endif()
if ("${ARG_OUTPUT_MAPPING}" STREQUAL "")
set(ARG_OUTPUT_MAPPING "${site_out}")
endif()
foreach(c ${LLVM_TARGETS_TO_BUILD})
set(TARGETS_BUILT "${TARGETS_BUILT} ${c}")
endforeach(c)
set(TARGETS_TO_BUILD ${TARGETS_BUILT})
set(SHLIBEXT "${LTDL_SHLIB_EXT}")
# Configuration-time: See Unit/lit.site.cfg.in
if (CMAKE_CFG_INTDIR STREQUAL ".")
set(LLVM_BUILD_MODE ".")
else ()
set(LLVM_BUILD_MODE "%(build_mode)s")
endif ()
# They below might not be the build tree but provided binary tree.
set(LLVM_SOURCE_DIR ${LLVM_MAIN_SRC_DIR})
set(LLVM_BINARY_DIR ${LLVM_BINARY_DIR})
string(REPLACE "${CMAKE_CFG_INTDIR}" "${LLVM_BUILD_MODE}" LLVM_TOOLS_DIR "${LLVM_TOOLS_BINARY_DIR}")
string(REPLACE ${CMAKE_CFG_INTDIR} ${LLVM_BUILD_MODE} LLVM_LIBS_DIR "${LLVM_LIBRARY_DIR}")
# SHLIBDIR points the build tree.
string(REPLACE "${CMAKE_CFG_INTDIR}" "${LLVM_BUILD_MODE}" SHLIBDIR "${LLVM_SHLIB_OUTPUT_INTDIR}")
set(PYTHON_EXECUTABLE ${PYTHON_EXECUTABLE})
# FIXME: "ENABLE_SHARED" doesn't make sense, since it is used just for
# plugins. We may rename it.
if(LLVM_ENABLE_PLUGINS)
set(ENABLE_SHARED "1")
else()
set(ENABLE_SHARED "0")
endif()
if(LLVM_ENABLE_ASSERTIONS AND NOT MSVC_IDE)
set(ENABLE_ASSERTIONS "1")
else()
set(ENABLE_ASSERTIONS "0")
endif()
set(HOST_OS ${CMAKE_SYSTEM_NAME})
set(HOST_ARCH ${CMAKE_SYSTEM_PROCESSOR})
set(HOST_CC "${CMAKE_C_COMPILER} ${CMAKE_C_COMPILER_ARG1}")
set(HOST_CXX "${CMAKE_CXX_COMPILER} ${CMAKE_CXX_COMPILER_ARG1}")
set(HOST_LDFLAGS "${CMAKE_EXE_LINKER_FLAGS}")
set(LIT_SITE_CFG_IN_HEADER "## Autogenerated from ${site_in}\n## Do not edit!")
# Override config_target_triple (and the env)
if(LLVM_TARGET_TRIPLE_ENV)
# This is expanded into the heading.
string(CONCAT LIT_SITE_CFG_IN_HEADER "${LIT_SITE_CFG_IN_HEADER}\n\n"
"import os\n"
"target_env = \"${LLVM_TARGET_TRIPLE_ENV}\"\n"
"config.target_triple = config.environment[target_env] = os.environ.get(target_env, \"${TARGET_TRIPLE}\")\n"
)
# This is expanded to; config.target_triple = ""+config.target_triple+""
set(TARGET_TRIPLE "\"+config.target_triple+\"")
endif()
string(CONCAT LIT_SITE_CFG_IN_FOOTER
"import lit.llvm\n"
"lit.llvm.initialize(lit_config, config)\n")
configure_file(${site_in} ${site_out} @ONLY)
if (EXISTS "${ARG_MAIN_CONFIG}")
set(PYTHON_STATEMENT "map_config('${ARG_MAIN_CONFIG}', '${site_out}')")
get_property(LLVM_LIT_CONFIG_MAP GLOBAL PROPERTY LLVM_LIT_CONFIG_MAP)
set(LLVM_LIT_CONFIG_MAP "${LLVM_LIT_CONFIG_MAP}\n${PYTHON_STATEMENT}")
set_property(GLOBAL PROPERTY LLVM_LIT_CONFIG_MAP ${LLVM_LIT_CONFIG_MAP})
endif()
endfunction()
function(dump_all_cmake_variables)
get_cmake_property(_variableNames VARIABLES)
foreach (_variableName ${_variableNames})
message(STATUS "${_variableName}=${${_variableName}}")
endforeach()
endfunction()
function(get_llvm_lit_path base_dir file_name)
cmake_parse_arguments(ARG "ALLOW_EXTERNAL" "" "" ${ARGN})
if (ARG_ALLOW_EXTERNAL)
set(LLVM_DEFAULT_EXTERNAL_LIT "${LLVM_EXTERNAL_LIT}")
set (LLVM_EXTERNAL_LIT "" CACHE STRING "Command used to spawn lit")
if ("${LLVM_EXTERNAL_LIT}" STREQUAL "")
set(LLVM_EXTERNAL_LIT "${LLVM_DEFAULT_EXTERNAL_LIT}")
endif()
if (NOT "${LLVM_EXTERNAL_LIT}" STREQUAL "")
if (EXISTS ${LLVM_EXTERNAL_LIT})
get_filename_component(LIT_FILE_NAME ${LLVM_EXTERNAL_LIT} NAME)
get_filename_component(LIT_BASE_DIR ${LLVM_EXTERNAL_LIT} DIRECTORY)
set(${file_name} ${LIT_FILE_NAME} PARENT_SCOPE)
set(${base_dir} ${LIT_BASE_DIR} PARENT_SCOPE)
return()
else()
message(WARN "LLVM_EXTERNAL_LIT set to ${LLVM_EXTERNAL_LIT}, but the path does not exist.")
endif()
endif()
endif()
set(lit_file_name "llvm-lit")
if (WIN32 AND NOT CYGWIN)
# llvm-lit needs suffix.py for multiprocess to find a main module.
set(lit_file_name "${lit_file_name}.py")
endif ()
set(${file_name} ${lit_file_name} PARENT_SCOPE)
get_property(LLVM_LIT_BASE_DIR GLOBAL PROPERTY LLVM_LIT_BASE_DIR)
if (NOT "${LLVM_LIT_BASE_DIR}" STREQUAL "")
set(${base_dir} ${LLVM_LIT_BASE_DIR} PARENT_SCOPE)
endif()
# Allow individual projects to provide an override
if (NOT "${LLVM_LIT_OUTPUT_DIR}" STREQUAL "")
set(LLVM_LIT_BASE_DIR ${LLVM_LIT_OUTPUT_DIR})
elseif(NOT "${LLVM_RUNTIME_OUTPUT_INTDIR}" STREQUAL "")
set(LLVM_LIT_BASE_DIR ${LLVM_RUNTIME_OUTPUT_INTDIR})
else()
set(LLVM_LIT_BASE_DIR "")
endif()
# Cache this so we don't have to do it again and have subsequent calls
# potentially disagree on the value.
set_property(GLOBAL PROPERTY LLVM_LIT_BASE_DIR ${LLVM_LIT_BASE_DIR})
set(${base_dir} ${LLVM_LIT_BASE_DIR} PARENT_SCOPE)
endfunction()
# A raw function to create a lit target. This is used to implement the testuite
# management functions.
function(add_lit_target target comment)
cmake_parse_arguments(ARG "" "" "PARAMS;DEPENDS;ARGS" ${ARGN})
set(LIT_ARGS "${ARG_ARGS} ${LLVM_LIT_ARGS}")
separate_arguments(LIT_ARGS)
if (NOT CMAKE_CFG_INTDIR STREQUAL ".")
list(APPEND LIT_ARGS --param build_mode=${CMAKE_CFG_INTDIR})
endif ()
# Get the path to the lit to *run* tests with. This can be overriden by
# the user by specifying -DLLVM_EXTERNAL_LIT=<path-to-lit.py>
get_llvm_lit_path(
lit_base_dir
lit_file_name
ALLOW_EXTERNAL
)
set(LIT_COMMAND "${PYTHON_EXECUTABLE};${lit_base_dir}/${lit_file_name}")
list(APPEND LIT_COMMAND ${LIT_ARGS})
foreach(param ${ARG_PARAMS})
list(APPEND LIT_COMMAND --param ${param})
endforeach()
if (ARG_UNPARSED_ARGUMENTS)
add_custom_target(${target}
COMMAND ${LIT_COMMAND} ${ARG_UNPARSED_ARGUMENTS}
COMMENT "${comment}"
USES_TERMINAL
)
else()
add_custom_target(${target}
COMMAND ${CMAKE_COMMAND} -E echo "${target} does nothing, no tools built.")
message(STATUS "${target} does nothing.")
endif()
if (ARG_DEPENDS)
add_dependencies(${target} ${ARG_DEPENDS})
endif()
# Tests should be excluded from "Build Solution".
set_target_properties(${target} PROPERTIES EXCLUDE_FROM_DEFAULT_BUILD ON)
endfunction()
# A function to add a set of lit test suites to be driven through 'check-*' targets.
function(add_lit_testsuite target comment)
cmake_parse_arguments(ARG "" "" "PARAMS;DEPENDS;ARGS" ${ARGN})
# EXCLUDE_FROM_ALL excludes the test ${target} out of check-all.
if(NOT EXCLUDE_FROM_ALL)
# Register the testsuites, params and depends for the global check rule.
set_property(GLOBAL APPEND PROPERTY LLVM_LIT_TESTSUITES ${ARG_UNPARSED_ARGUMENTS})
set_property(GLOBAL APPEND PROPERTY LLVM_LIT_PARAMS ${ARG_PARAMS})
set_property(GLOBAL APPEND PROPERTY LLVM_LIT_DEPENDS ${ARG_DEPENDS})
set_property(GLOBAL APPEND PROPERTY LLVM_LIT_EXTRA_ARGS ${ARG_ARGS})
endif()
# Produce a specific suffixed check rule.
add_lit_target(${target} ${comment}
${ARG_UNPARSED_ARGUMENTS}
PARAMS ${ARG_PARAMS}
DEPENDS ${ARG_DEPENDS}
ARGS ${ARG_ARGS}
)
endfunction()
function(add_lit_testsuites project directory)
if (NOT CMAKE_CONFIGURATION_TYPES)
cmake_parse_arguments(ARG "" "" "PARAMS;DEPENDS;ARGS" ${ARGN})
# Search recursively for test directories by assuming anything not
# in a directory called Inputs contains tests.
file(GLOB_RECURSE to_process LIST_DIRECTORIES true ${directory}/*)
foreach(lit_suite ${to_process})
if(NOT IS_DIRECTORY ${lit_suite})
continue()
endif()
string(FIND ${lit_suite} Inputs is_inputs)
string(FIND ${lit_suite} Output is_output)
if (NOT (is_inputs EQUAL -1 AND is_output EQUAL -1))
continue()
endif()
# Create a check- target for the directory.
string(REPLACE ${directory} "" name_slash ${lit_suite})
if (name_slash)
string(REPLACE "/" "-" name_slash ${name_slash})
string(REPLACE "\\" "-" name_dashes ${name_slash})
string(TOLOWER "${project}${name_dashes}" name_var)
add_lit_target("check-${name_var}" "Running lit suite ${lit_suite}"
${lit_suite}
PARAMS ${ARG_PARAMS}
DEPENDS ${ARG_DEPENDS}
ARGS ${ARG_ARGS}
)
endif()
endforeach()
endif()
endfunction()
function(llvm_install_library_symlink name dest type)
cmake_parse_arguments(ARG "ALWAYS_GENERATE" "COMPONENT" "" ${ARGN})
foreach(path ${CMAKE_MODULE_PATH})
if(EXISTS ${path}/LLVMInstallSymlink.cmake)
set(INSTALL_SYMLINK ${path}/LLVMInstallSymlink.cmake)
break()
endif()
endforeach()
set(component ${ARG_COMPONENT})
if(NOT component)
set(component ${name})
endif()
set(full_name ${CMAKE_${type}_LIBRARY_PREFIX}${name}${CMAKE_${type}_LIBRARY_SUFFIX})
set(full_dest ${CMAKE_${type}_LIBRARY_PREFIX}${dest}${CMAKE_${type}_LIBRARY_SUFFIX})
set(output_dir lib${LLVM_LIBDIR_SUFFIX})
if(WIN32 AND "${type}" STREQUAL "SHARED")
set(output_dir bin)
endif()
install(SCRIPT ${INSTALL_SYMLINK}
CODE "install_symlink(${full_name} ${full_dest} ${output_dir})"
COMPONENT ${component})
if (NOT CMAKE_CONFIGURATION_TYPES AND NOT ARG_ALWAYS_GENERATE)
add_custom_target(install-${name}
DEPENDS ${name} ${dest} install-${dest}
COMMAND "${CMAKE_COMMAND}"
-DCMAKE_INSTALL_COMPONENT=${name}
-P "${CMAKE_BINARY_DIR}/cmake_install.cmake")
endif()
endfunction()
function(llvm_install_symlink name dest)
cmake_parse_arguments(ARG "ALWAYS_GENERATE" "COMPONENT" "" ${ARGN})
foreach(path ${CMAKE_MODULE_PATH})
if(EXISTS ${path}/LLVMInstallSymlink.cmake)
set(INSTALL_SYMLINK ${path}/LLVMInstallSymlink.cmake)
break()
endif()
endforeach()
if(ARG_COMPONENT)
set(component ${ARG_COMPONENT})
else()
if(ARG_ALWAYS_GENERATE)
set(component ${dest})
else()
set(component ${name})
endif()
endif()
set(full_name ${name}${CMAKE_EXECUTABLE_SUFFIX})
set(full_dest ${dest}${CMAKE_EXECUTABLE_SUFFIX})
install(SCRIPT ${INSTALL_SYMLINK}
CODE "install_symlink(${full_name} ${full_dest} ${LLVM_TOOLS_INSTALL_DIR})"
COMPONENT ${component})
if (NOT CMAKE_CONFIGURATION_TYPES AND NOT ARG_ALWAYS_GENERATE)
add_custom_target(install-${name}
DEPENDS ${name} ${dest} install-${dest}
COMMAND "${CMAKE_COMMAND}"
-DCMAKE_INSTALL_COMPONENT=${name}
-P "${CMAKE_BINARY_DIR}/cmake_install.cmake")
endif()
endfunction()
function(add_llvm_tool_symlink link_name target)
cmake_parse_arguments(ARG "ALWAYS_GENERATE" "OUTPUT_DIR" "" ${ARGN})
set(dest_binary "$<TARGET_FILE:${target}>")
# This got a bit gross... For multi-configuration generators the target
# properties return the resolved value of the string, not the build system
# expression. To reconstruct the platform-agnostic path we have to do some
# magic. First we grab one of the types, and a type-specific path. Then from
# the type-specific path we find the last occurrence of the type in the path,
# and replace it with CMAKE_CFG_INTDIR. This allows the build step to be type
# agnostic again.
if(NOT ARG_OUTPUT_DIR)
# If you're not overriding the OUTPUT_DIR, we can make the link relative in
# the same directory.
if(UNIX)
set(dest_binary "$<TARGET_FILE_NAME:${target}>")
endif()
if(CMAKE_CONFIGURATION_TYPES)
list(GET CMAKE_CONFIGURATION_TYPES 0 first_type)
string(TOUPPER ${first_type} first_type_upper)
set(first_type_suffix _${first_type_upper})
endif()
get_target_property(target_type ${target} TYPE)
if(${target_type} STREQUAL "STATIC_LIBRARY")
get_target_property(ARG_OUTPUT_DIR ${target} ARCHIVE_OUTPUT_DIRECTORY${first_type_suffix})
elseif(UNIX AND ${target_type} STREQUAL "SHARED_LIBRARY")
get_target_property(ARG_OUTPUT_DIR ${target} LIBRARY_OUTPUT_DIRECTORY${first_type_suffix})
else()
get_target_property(ARG_OUTPUT_DIR ${target} RUNTIME_OUTPUT_DIRECTORY${first_type_suffix})
endif()
if(CMAKE_CONFIGURATION_TYPES)
string(FIND "${ARG_OUTPUT_DIR}" "/${first_type}/" type_start REVERSE)
string(SUBSTRING "${ARG_OUTPUT_DIR}" 0 ${type_start} path_prefix)
string(SUBSTRING "${ARG_OUTPUT_DIR}" ${type_start} -1 path_suffix)
string(REPLACE "/${first_type}/" "/${CMAKE_CFG_INTDIR}/"
path_suffix ${path_suffix})
set(ARG_OUTPUT_DIR ${path_prefix}${path_suffix})
endif()
endif()
if(UNIX)
set(LLVM_LINK_OR_COPY create_symlink)
else()
set(LLVM_LINK_OR_COPY copy)
endif()
set(output_path "${ARG_OUTPUT_DIR}/${link_name}${CMAKE_EXECUTABLE_SUFFIX}")
set(target_name ${link_name})
if(TARGET ${link_name})
set(target_name ${link_name}-link)
endif()
if(ARG_ALWAYS_GENERATE)
set_property(DIRECTORY APPEND PROPERTY
ADDITIONAL_MAKE_CLEAN_FILES ${dest_binary})
add_custom_command(TARGET ${target} POST_BUILD
COMMAND ${CMAKE_COMMAND} -E ${LLVM_LINK_OR_COPY} "${dest_binary}" "${output_path}")
else()
add_custom_command(OUTPUT ${output_path}
COMMAND ${CMAKE_COMMAND} -E ${LLVM_LINK_OR_COPY} "${dest_binary}" "${output_path}"
DEPENDS ${target})
add_custom_target(${target_name} ALL DEPENDS ${target} ${output_path})
set_target_properties(${target_name} PROPERTIES FOLDER Tools)
# Make sure both the link and target are toolchain tools
if (${link_name} IN_LIST LLVM_TOOLCHAIN_TOOLS AND ${target} IN_LIST LLVM_TOOLCHAIN_TOOLS)
set(TOOL_IS_TOOLCHAIN ON)
endif()
if ((TOOL_IS_TOOLCHAIN OR NOT LLVM_INSTALL_TOOLCHAIN_ONLY) AND LLVM_BUILD_TOOLS)
llvm_install_symlink(${link_name} ${target})
endif()
endif()
endfunction()
function(llvm_externalize_debuginfo name)
if(NOT LLVM_EXTERNALIZE_DEBUGINFO)
return()
endif()
if(NOT LLVM_EXTERNALIZE_DEBUGINFO_SKIP_STRIP)
if(APPLE)
set(strip_command COMMAND xcrun strip -Sxl $<TARGET_FILE:${name}>)
else()
set(strip_command COMMAND strip -gx $<TARGET_FILE:${name}>)
endif()
endif()
if(APPLE)
if(CMAKE_CXX_FLAGS MATCHES "-flto"
OR CMAKE_CXX_FLAGS_${uppercase_CMAKE_BUILD_TYPE} MATCHES "-flto")
set(lto_object ${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_CFG_INTDIR}/${name}-lto.o)
set_property(TARGET ${name} APPEND_STRING PROPERTY
LINK_FLAGS " -Wl,-object_path_lto,${lto_object}")
endif()
add_custom_command(TARGET ${name} POST_BUILD
COMMAND xcrun dsymutil $<TARGET_FILE:${name}>
${strip_command}
)
else()
add_custom_command(TARGET ${name} POST_BUILD
COMMAND objcopy --only-keep-debug $<TARGET_FILE:${name}> $<TARGET_FILE:${name}>.debug
${strip_command} -R .gnu_debuglink
COMMAND objcopy --add-gnu-debuglink=$<TARGET_FILE:${name}>.debug $<TARGET_FILE:${name}>
)
endif()
endfunction()
function(llvm_setup_rpath name)
if(CMAKE_INSTALL_RPATH)
return()
endif()
if(LLVM_INSTALL_PREFIX AND NOT (LLVM_INSTALL_PREFIX STREQUAL CMAKE_INSTALL_PREFIX))
set(extra_libdir ${LLVM_LIBRARY_DIR})
elseif(LLVM_BUILD_LIBRARY_DIR)
set(extra_libdir ${LLVM_LIBRARY_DIR})
endif()
if (APPLE)
set(_install_name_dir INSTALL_NAME_DIR "@rpath")
set(_install_rpath "@loader_path/../lib" ${extra_libdir})
elseif(UNIX)
set(_install_rpath "\$ORIGIN/../lib${LLVM_LIBDIR_SUFFIX}" ${extra_libdir})
if(${CMAKE_SYSTEM_NAME} MATCHES "(FreeBSD|DragonFly)")
set_property(TARGET ${name} APPEND_STRING PROPERTY
LINK_FLAGS " -Wl,-z,origin ")
elseif(${CMAKE_SYSTEM_NAME} STREQUAL "Linux" AND NOT LLVM_LINKER_IS_GOLD)
# $ORIGIN is not interpreted at link time by ld.bfd
set_property(TARGET ${name} APPEND_STRING PROPERTY
LINK_FLAGS " -Wl,-rpath-link,${LLVM_LIBRARY_OUTPUT_INTDIR} ")
endif()
else()
return()
endif()
set_target_properties(${name} PROPERTIES
BUILD_WITH_INSTALL_RPATH On
INSTALL_RPATH "${_install_rpath}"
${_install_name_dir})
endfunction()
function(setup_dependency_debugging name)
if(NOT LLVM_DEPENDENCY_DEBUGGING)
return()
endif()
if("intrinsics_gen" IN_LIST ARGN)
return()
endif()
set(deny_attributes_gen "(deny file* (literal \"${LLVM_BINARY_DIR}/include/llvm/IR/Attributes.gen\"))")
set(deny_intrinsics_gen "(deny file* (literal \"${LLVM_BINARY_DIR}/include/llvm/IR/Intrinsics.gen\"))")
set(sandbox_command "sandbox-exec -p '(version 1) (allow default) ${deny_attributes_gen} ${deny_intrinsics_gen}'")
set_target_properties(${name} PROPERTIES RULE_LAUNCH_COMPILE ${sandbox_command})
endfunction()
# Figure out if we can track VC revisions.
function(find_first_existing_file out_var)
foreach(file ${ARGN})
if(EXISTS "${file}")
set(${out_var} "${file}" PARENT_SCOPE)
return()
endif()
endforeach()
endfunction()
macro(find_first_existing_vc_file out_var path)
find_program(git_executable NAMES git git.exe git.cmd)
# Run from a subdirectory to force git to print an absolute path.
execute_process(COMMAND ${git_executable} rev-parse --git-dir
WORKING_DIRECTORY ${path}/cmake
RESULT_VARIABLE git_result
OUTPUT_VARIABLE git_dir
ERROR_QUIET)
if(git_result EQUAL 0)
string(STRIP "${git_dir}" git_dir)
set(${out_var} "${git_dir}/logs/HEAD")
# some branchless cases (e.g. 'repo') may not yet have .git/logs/HEAD
if (NOT EXISTS "${git_dir}/logs/HEAD")
file(WRITE "${git_dir}/logs/HEAD" "")
endif()
else()
find_first_existing_file(${out_var}
"${path}/.svn/wc.db" # SVN 1.7
"${path}/.svn/entries" # SVN 1.6
)
endif()
endmacro()