forked from OSchip/llvm-project
176 lines
6.7 KiB
CMake
176 lines
6.7 KiB
CMake
# This tool creates a shared library from the LLVM libraries. Generating this
|
|
# library is enabled by setting LLVM_BUILD_LLVM_DYLIB=yes on the CMake
|
|
# commandline. By default the shared library only exports the LLVM C API.
|
|
|
|
set(SOURCES
|
|
libllvm.cpp
|
|
)
|
|
|
|
if(LLVM_LINK_LLVM_DYLIB AND LLVM_DYLIB_EXPORTED_SYMBOL_FILE)
|
|
message(WARNING "Using LLVM_LINK_LLVM_DYLIB with LLVM_DYLIB_EXPORTED_SYMBOL_FILE may not work. Use at your own risk.")
|
|
endif()
|
|
|
|
if(LLVM_BUILD_LLVM_DYLIB)
|
|
if(MSVC)
|
|
message(FATAL_ERROR "Generating libLLVM is not supported on MSVC")
|
|
endif()
|
|
|
|
llvm_map_components_to_libnames(LIB_NAMES ${LLVM_DYLIB_COMPONENTS})
|
|
|
|
# Exclude libLLVMTableGen for the following reasons:
|
|
# - it is only used by internal *-tblgen utilities;
|
|
# - it pollutes the global options space.
|
|
list(REMOVE_ITEM LIB_NAMES "LLVMTableGen")
|
|
|
|
if(LLVM_DYLIB_EXPORTED_SYMBOL_FILE)
|
|
set(LLVM_EXPORTED_SYMBOL_FILE ${LLVM_DYLIB_EXPORTED_SYMBOL_FILE})
|
|
add_custom_target(libLLVMExports DEPENDS ${LLVM_EXPORTED_SYMBOL_FILE})
|
|
endif()
|
|
|
|
if (LLVM_LINK_LLVM_DYLIB)
|
|
set(INSTALL_WITH_TOOLCHAIN INSTALL_WITH_TOOLCHAIN)
|
|
endif()
|
|
add_llvm_library(LLVM SHARED DISABLE_LLVM_LINK_LLVM_DYLIB SONAME ${INSTALL_WITH_TOOLCHAIN} ${SOURCES})
|
|
|
|
list(REMOVE_DUPLICATES LIB_NAMES)
|
|
if(("${CMAKE_SYSTEM_NAME}" STREQUAL "Linux") OR (MINGW) OR (HAIKU)
|
|
OR ("${CMAKE_SYSTEM_NAME}" STREQUAL "FreeBSD")
|
|
OR ("${CMAKE_SYSTEM_NAME}" STREQUAL "GNU")
|
|
OR ("${CMAKE_SYSTEM_NAME}" STREQUAL "OpenBSD")
|
|
OR ("${CMAKE_SYSTEM_NAME}" STREQUAL "Fuchsia")
|
|
OR ("${CMAKE_SYSTEM_NAME}" STREQUAL "DragonFly")
|
|
OR ("${CMAKE_SYSTEM_NAME}" STREQUAL "SunOS")) # FIXME: It should be "GNU ld for elf"
|
|
configure_file(
|
|
${CMAKE_CURRENT_SOURCE_DIR}/simple_version_script.map.in
|
|
${LLVM_LIBRARY_DIR}/tools/llvm-shlib/simple_version_script.map)
|
|
|
|
# GNU ld doesn't resolve symbols in the version script.
|
|
set(LIB_NAMES -Wl,--whole-archive ${LIB_NAMES} -Wl,--no-whole-archive)
|
|
if (NOT LLVM_LINKER_IS_SOLARISLD AND NOT MINGW)
|
|
# Solaris ld does not accept global: *; so there is no way to version *all* global symbols
|
|
set(LIB_NAMES -Wl,--version-script,${LLVM_LIBRARY_DIR}/tools/llvm-shlib/simple_version_script.map ${LIB_NAMES})
|
|
endif()
|
|
elseif("${CMAKE_SYSTEM_NAME}" STREQUAL "Darwin")
|
|
set(LIB_NAMES -Wl,-all_load ${LIB_NAMES})
|
|
endif()
|
|
|
|
target_link_libraries(LLVM PRIVATE ${LIB_NAMES})
|
|
|
|
if (APPLE)
|
|
set_property(TARGET LLVM APPEND_STRING PROPERTY
|
|
LINK_FLAGS
|
|
" -compatibility_version 1 -current_version ${LLVM_VERSION_MAJOR}.${LLVM_VERSION_MINOR}.${LLVM_VERSION_PATCH}")
|
|
endif()
|
|
|
|
if(TARGET libLLVMExports)
|
|
add_dependencies(LLVM libLLVMExports)
|
|
endif()
|
|
endif()
|
|
|
|
if(LLVM_BUILD_LLVM_C_DYLIB AND NOT MSVC)
|
|
if(NOT APPLE)
|
|
message(FATAL_ERROR "Generating libLLVM-c is only supported on Darwin")
|
|
endif()
|
|
|
|
if(NOT LLVM_BUILD_LLVM_DYLIB)
|
|
message(FATAL_ERROR "Generating libLLVM-c requires LLVM_BUILD_LLVM_C_DYLIB on Darwin")
|
|
endif()
|
|
|
|
# To get the export list for a single llvm library:
|
|
# nm ${LIB_PATH} | awk "/T _LLVM/ { print $3 }" | sort -u | sed -e "s/^_//g" > ${LIB_PATH}.exports
|
|
|
|
set(LLVM_EXPORTED_SYMBOL_FILE ${CMAKE_BINARY_DIR}/libllvm-c.exports)
|
|
|
|
set(LIB_DIR ${CMAKE_BINARY_DIR}/${CMAKE_CFG_INTDIR}/lib${LLVM_LIBDIR_SUFFIX})
|
|
set(LIB_NAME ${LIB_DIR}/${CMAKE_SHARED_LIBRARY_PREFIX}LLVM)
|
|
set(LIB_PATH ${LIB_NAME}${CMAKE_SHARED_LIBRARY_SUFFIX})
|
|
set(LIB_EXPORTS_PATH ${LIB_NAME}.exports)
|
|
list(APPEND LLVM_DYLIB_REQUIRED_EXPORTS ${LIB_EXPORTS_PATH})
|
|
|
|
add_custom_command(OUTPUT ${LLVM_EXPORTED_SYMBOL_FILE}
|
|
COMMAND nm ${LIB_PATH} | awk "/T _LLVM/ || /T LLVM/ { print $3 }" | sort -u | sed -e "s/^_//g" > ${LLVM_EXPORTED_SYMBOL_FILE}
|
|
WORKING_DIRECTORY ${LIB_DIR}
|
|
DEPENDS LLVM
|
|
COMMENT "Generating Export list for LLVM..."
|
|
VERBATIM )
|
|
|
|
add_custom_target(libLLVMCExports DEPENDS ${LLVM_EXPORTED_SYMBOL_FILE})
|
|
|
|
add_llvm_library(LLVM-C SHARED ${SOURCES} INSTALL_WITH_TOOLCHAIN)
|
|
|
|
target_link_libraries(LLVM-C PUBLIC LLVM)
|
|
add_dependencies(LLVM-C libLLVMCExports)
|
|
|
|
set_property(TARGET LLVM-C APPEND_STRING PROPERTY
|
|
LINK_FLAGS
|
|
" -compatibility_version 1 -current_version ${LLVM_VERSION_MAJOR}.${LLVM_VERSION_MINOR}.${LLVM_VERSION_PATCH} -Wl,-reexport_library ${LIB_PATH}")
|
|
endif()
|
|
|
|
if(MSVC)
|
|
# Build the LLVM-C.dll library that exports the C API.
|
|
|
|
set(LLVM_LINK_COMPONENTS
|
|
${LLVM_DYLIB_COMPONENTS}
|
|
)
|
|
|
|
llvm_map_components_to_libnames(LIB_NAMES ${LLVM_DYLIB_COMPONENTS})
|
|
list(REMOVE_DUPLICATES LIB_NAMES)
|
|
|
|
# The python script needs to know whether symbols are prefixed with underscores or not.
|
|
if(LLVM_HOST_TRIPLE STREQUAL "i686-pc-win32")
|
|
set(GEN_UNDERSCORE "--underscore")
|
|
else()
|
|
set(GEN_UNDERSCORE "")
|
|
endif()
|
|
|
|
# Set this name here, not used in multi conf loop,
|
|
# but add script will pick the right one.
|
|
set(LIBSFILE ${CMAKE_BINARY_DIR}/${CMAKE_CFG_INTDIR}/libllvm-c.args)
|
|
|
|
# Get the full name to the libs so the python script understands them.
|
|
foreach(lib ${LIB_NAMES})
|
|
list(APPEND FULL_LIB_NAMES ${CMAKE_BINARY_DIR}/${CMAKE_CFG_INTDIR}/lib/${lib}.lib)
|
|
endforeach()
|
|
|
|
# Need to seperate lib names with newlines.
|
|
string(REPLACE ";" "\n" FILE_CONTENT "${FULL_LIB_NAMES}")
|
|
|
|
if(NOT "${CMAKE_CFG_INTDIR}" STREQUAL ".")
|
|
foreach(BUILD_MODE ${CMAKE_CONFIGURATION_TYPES})
|
|
# Replace the special string with a per config directory.
|
|
string(REPLACE ${CMAKE_CFG_INTDIR} ${BUILD_MODE} PER_CONF_CONTENT "${FILE_CONTENT}")
|
|
|
|
# Write out the full lib names into file to be read by the python script.
|
|
# One libsfile per build, the add_custom_command should expand
|
|
# ${CMAKE_CFG_INTDIR} correctly and select the right one.
|
|
file(WRITE ${CMAKE_BINARY_DIR}/${BUILD_MODE}/libllvm-c.args "${PER_CONF_CONTENT}")
|
|
endforeach()
|
|
else()
|
|
# Write out the full lib names into file to be read by the python script.
|
|
file(WRITE ${LIBSFILE} "${FILE_CONTENT}")
|
|
endif()
|
|
|
|
# Generate the exports file dynamically.
|
|
set(GEN_SCRIPT ${CMAKE_CURRENT_SOURCE_DIR}/gen-msvc-exports.py)
|
|
|
|
set(LLVM_EXPORTED_SYMBOL_FILE ${CMAKE_BINARY_DIR}/${CMAKE_CFG_INTDIR}/libllvm-c.exports)
|
|
|
|
if(CMAKE_CROSSCOMPILING)
|
|
build_native_tool(llvm-nm llvm_nm)
|
|
set(llvm_nm_target "${llvm_nm}")
|
|
else()
|
|
set(llvm_nm $<TARGET_FILE:llvm-nm>)
|
|
set(llvm_nm_target llvm-nm)
|
|
endif()
|
|
|
|
add_custom_command(OUTPUT ${LLVM_EXPORTED_SYMBOL_FILE}
|
|
COMMAND ${PYTHON_EXECUTABLE} ${GEN_SCRIPT} --libsfile ${LIBSFILE} ${GEN_UNDERSCORE} --nm "${llvm_nm}" -o ${LLVM_EXPORTED_SYMBOL_FILE}
|
|
DEPENDS ${LIB_NAMES} ${llvm_nm_target}
|
|
COMMENT "Generating export list for LLVM-C"
|
|
VERBATIM )
|
|
|
|
# Finally link the target.
|
|
add_llvm_library(LLVM-C SHARED INSTALL_WITH_TOOLCHAIN ${SOURCES} DEPENDS intrinsics_gen)
|
|
|
|
endif()
|