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include(ExternalProject)
set(BOLT_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR})
set(BOLT_BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR})
set(CMAKE_CXX_STANDARD 17)
# Determine default set of targets to build -- the intersection of
# those BOLT supports and those LLVM is targeting.
set(BOLT_TARGETS_TO_BUILD_all "AArch64;X86")
set(BOLT_TARGETS_TO_BUILD_default)
foreach (tgt ${BOLT_TARGETS_TO_BUILD_all})
if (tgt IN_LIST LLVM_TARGETS_TO_BUILD)
list(APPEND BOLT_TARGETS_TO_BUILD_default ${tgt})
endif()
endforeach()
# Allow the user to specify the BOLT targets, and then check that LLVM
# is indeed targeting those.
set(BOLT_TARGETS_TO_BUILD "${BOLT_TARGETS_TO_BUILD_default}"
CACHE STRING "Targets for BOLT to support.")
if (NOT BOLT_TARGETS_TO_BUILD)
message(FATAL_ERROR "BOLT enabled but BOLT_TARGETS_TO_BUILD is empty")
endif()
foreach (tgt ${BOLT_TARGETS_TO_BUILD})
if (NOT tgt IN_LIST LLVM_TARGETS_TO_BUILD)
message(FATAL_ERROR "BOLT target '${tgt}' is not in LLVM_TARGETS_TO_BUILD")
endif()
message(STATUS "Targeting ${tgt} in llvm-bolt")
endforeach()
set(BOLT_ENABLE_RUNTIME_default OFF)
if (CMAKE_SYSTEM_PROCESSOR STREQUAL "x86_64"
AND (CMAKE_SYSTEM_NAME STREQUAL "Linux"
OR CMAKE_SYSTEM_NAME STREQUAL "Darwin")
AND "X86" IN_LIST BOLT_TARGETS_TO_BUILD)
set(BOLT_ENABLE_RUNTIME_default ON)
endif()
option(BOLT_ENABLE_RUNTIME "Enable BOLT runtime" ${BOLT_ENABLE_RUNTIME_default})
if (BOLT_ENABLE_RUNTIME)
# Some systems prevent reading /proc/self/map_files
execute_process(COMMAND ls /proc/self/map_files
RESULT_VARIABLE LS OUTPUT_QUIET ERROR_QUIET)
if (LS)
set(BOLT_ENABLE_RUNTIME OFF)
message(WARNING
"BOLT runtime is disabled as /proc/self/map_files is unreadable.")
endif()
endif()
set(BOLT_CLANG_EXE "" CACHE FILEPATH "Path to clang executable for the target \
architecture for use in BOLT tests")
set(BOLT_LLD_EXE "" CACHE FILEPATH "Path to lld executable for the target \
architecture for use in BOLT tests")
set(BOLT_INCLUDE_TESTS OFF)
if (LLVM_INCLUDE_TESTS)
set(BOLT_CLANG_PRESENT OFF)
set(BOLT_LLD_PRESENT OFF)
if ("clang" IN_LIST LLVM_ENABLE_PROJECTS AND BOLT_CLANG_EXE)
message(WARNING "BOLT_CLANG_EXE is set and clang project is enabled. \
BOLT_CLANG_EXE will be used for BOLT tests.")
endif()
if ("clang" IN_LIST LLVM_ENABLE_PROJECTS OR BOLT_CLANG_EXE)
set(BOLT_CLANG_PRESENT ON)
endif()
if ("lld" IN_LIST LLVM_ENABLE_PROJECTS AND BOLT_LLD_EXE)
message(WARNING "BOLT_LLD_EXE is set and lld project is enabled. \
BOLT_LLD_EXE will be used for BOLT tests.")
endif()
if ("lld" IN_LIST LLVM_ENABLE_PROJECTS OR BOLT_LLD_EXE)
set(BOLT_LLD_PRESENT ON)
endif()
if (BOLT_CLANG_PRESENT AND BOLT_LLD_PRESENT)
set(BOLT_INCLUDE_TESTS ON)
else()
message(WARNING "Not including BOLT tests since clang or lld is disabled. \
Add clang and lld to LLVM_ENABLE_PROJECTS or provide paths to clang \
and lld binaries in BOLT_CLANG_EXE and BOLT_LLD_EXE.")
endif()
endif()
if (BOLT_ENABLE_RUNTIME)
message(STATUS "Building BOLT runtime libraries for X86")
ExternalProject_Add(bolt_rt
SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/runtime"
STAMP_DIR ${CMAKE_CURRENT_BINARY_DIR}/bolt_rt-stamps
BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR}/bolt_rt-bins
CMAKE_ARGS -DCMAKE_C_COMPILER=${CMAKE_C_COMPILER}
-DCMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER}
-DCMAKE_BUILD_TYPE=Release
-DCMAKE_MAKE_PROGRAM=${CMAKE_MAKE_PROGRAM}
-DCMAKE_INSTALL_PREFIX=${LLVM_BINARY_DIR}
-DLLVM_LIBDIR_SUFFIX=${LLVM_LIBDIR_SUFFIX}
BUILD_ALWAYS True
)
install(CODE "execute_process\(COMMAND \${CMAKE_COMMAND} -DCMAKE_INSTALL_PREFIX=\${CMAKE_INSTALL_PREFIX} -P ${CMAKE_CURRENT_BINARY_DIR}/bolt_rt-bins/cmake_install.cmake \)"
COMPONENT bolt)
add_llvm_install_targets(install-bolt_rt
DEPENDS bolt_rt bolt
COMPONENT bolt)
endif()
find_program(GNU_LD_EXECUTABLE NAMES ${LLVM_DEFAULT_TARGET_TRIPLE}-ld.bfd ld.bfd DOC "GNU ld")
include_directories(
${CMAKE_CURRENT_SOURCE_DIR}/include
${CMAKE_CURRENT_BINARY_DIR}/include
)
add_subdirectory(lib)
add_subdirectory(tools)
if (BOLT_INCLUDE_TESTS)
if (EXISTS ${LLVM_THIRD_PARTY_DIR}/unittest/googletest/include/gtest/gtest.h)
add_subdirectory(unittests)
list(APPEND BOLT_TEST_DEPS BoltUnitTests)
endif()
add_subdirectory(test)
endif()
option(BOLT_INCLUDE_DOCS "Generate build targets for the BOLT docs."
${LLVM_INCLUDE_DOCS})
if (BOLT_INCLUDE_DOCS)
add_subdirectory(docs)
endif()
configure_file(${CMAKE_CURRENT_SOURCE_DIR}/include/bolt/RuntimeLibs/RuntimeLibraryVariables.inc.in
${CMAKE_CURRENT_BINARY_DIR}/include/bolt/RuntimeLibs/RuntimeLibraryVariables.inc @ONLY)
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