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# 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.
# You can configure which libraries from LLVM you want to include in the shared
# library by setting LLVM_DYLIB_COMPONENTS to a semi-colon delimited list of
# LLVM components. All compoenent names handled by llvm-config are valid.
if(NOT DEFINED LLVM_DYLIB_COMPONENTS)
set(LLVM_DYLIB_COMPONENTS
${LLVM_TARGETS_TO_BUILD}
Analysis
BitReader
BitWriter
CodeGen
Core
ExecutionEngine
IPA
IPO
IRReader
InstCombine
Instrumentation
Interpreter
Linker
MCDisassembler
MCJIT
ObjCARCOpts
Object
ScalarOpts
Support
Target
TransformUtils
Vectorize
native
)
endif()
add_definitions( -DLLVM_VERSION_INFO=\"${PACKAGE_VERSION}\" )
set(SOURCES
libllvm.cpp
)
llvm_map_components_to_libnames(LIB_NAMES ${LLVM_DYLIB_COMPONENTS})
if(NOT DEFINED LLVM_DYLIB_EXPORTED_SYMBOL_FILE)
if( WIN32 AND NOT CYGWIN )
message(FATAL_ERROR "Auto-generation not implemented for Win32 without GNU utils. Please specify LLVM_EXPORTED_SYMBOL_FILE.")
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.exports)
if (NOT LLVM_DYLIB_EXPORT_ALL)
foreach (lib ${LIB_NAMES})
set(LIB_DIR ${CMAKE_BINARY_DIR}/${CMAKE_CFG_INTDIR}/lib${LLVM_LIBDIR_SUFFIX})
set(LIB_NAME ${LIB_DIR}/${CMAKE_STATIC_LIBRARY_PREFIX}${lib})
set(LIB_PATH ${LIB_NAME}${CMAKE_STATIC_LIBRARY_SUFFIX})
set(LIB_EXPORTS_PATH ${LIB_NAME}.exports)
list(APPEND LLVM_DYLIB_REQUIRED_EXPORTS ${LIB_EXPORTS_PATH})
add_custom_command(OUTPUT ${LIB_EXPORTS_PATH}
COMMAND nm ${LIB_PATH} | awk "/T _LLVM/ || /T LLVM/ { print $3 }" | sort -u | sed -e "s/^_//g" > ${LIB_EXPORTS_PATH}
WORKING_DIRECTORY ${LIB_DIR}
DEPENDS ${lib}
COMMENT "Generating Export list for ${lib}..."
VERBATIM )
endforeach ()
endif()
if (LLVM_DYLIB_EXPORT_ALL)
add_custom_command(OUTPUT ${LLVM_EXPORTED_SYMBOL_FILE}
COMMAND echo \"LLVM*\" > ${LLVM_EXPORTED_SYMBOL_FILE} && echo \"_Z*llvm*\" >> ${LLVM_EXPORTED_SYMBOL_FILE}
WORKING_DIRECTORY ${LIB_DIR}
DEPENDS ${LLVM_DYLIB_REQUIRED_EXPORTS}
COMMENT "Generating combined export list...")
else()
add_custom_command(OUTPUT ${LLVM_EXPORTED_SYMBOL_FILE}
COMMAND cat ${LLVM_DYLIB_REQUIRED_EXPORTS} > ${LLVM_EXPORTED_SYMBOL_FILE}
WORKING_DIRECTORY ${LIB_DIR}
DEPENDS ${LLVM_DYLIB_REQUIRED_EXPORTS}
COMMENT "Generating combined export list...")
endif()
add_custom_target(libLLVMExports DEPENDS ${LLVM_EXPORTED_SYMBOL_FILE})
else()
set(LLVM_EXPORTED_SYMBOL_FILE ${LLVM_DYLIB_EXPORTED_SYMBOL_FILE})
add_custom_target(libLLVMExports DEPENDS ${LLVM_EXPORTED_SYMBOL_FILE})
endif()
add_llvm_library(LLVM SHARED ${SOURCES})
list(REMOVE_DUPLICATES LIB_NAMES)
if("${CMAKE_SYSTEM_NAME}" STREQUAL "Linux") # FIXME: It should be "GNU ld for elf"
# GNU ld doesn't resolve symbols in the version script.
set(LIB_NAMES -Wl,--whole-archive ${LIB_NAMES} -Wl,--no-whole-archive)
elseif("${CMAKE_SYSTEM_NAME}" STREQUAL "Darwin")
set(LIB_NAMES -Wl,-all_load ${LIB_NAMES})
endif()
target_link_libraries(LLVM PRIVATE ${LIB_NAMES})
add_dependencies(LLVM libLLVMExports)
if (APPLE)
set_property(TARGET LLVM APPEND_STRING PROPERTY
LINK_FLAGS
" -compatibility_version ${LLVM_VERSION_MAJOR}.${LLVM_VERSION_MINOR} -current_version ${LLVM_VERSION_MAJOR}.${LLVM_VERSION_MINOR}")
endif()
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