llvm/runtimes/CMakeLists.txt

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# This file handles building LLVM runtime sub-projects.
# Runtimes are different from tools or other drop-in projects because runtimes
# should be built with the LLVM toolchain from the build directory. This file is
# a first step to formalizing runtime build interfaces.
# In the current state this file only works with compiler-rt, other runtimes
# will work as the runtime build interface standardizes.
# Find all subdirectories containing CMake projects
file(GLOB entries *)
foreach(entry ${entries})
if(IS_DIRECTORY ${entry} AND EXISTS ${entry}/CMakeLists.txt)
list(APPEND runtimes ${entry})
endif()
endforeach()
# If this file is acting as a top-level CMake invocation, this code path is
# triggered by the external project call for the runtimes target below.
if(${CMAKE_SOURCE_DIR} STREQUAL ${CMAKE_CURRENT_SOURCE_DIR})
function(runtime_register_component name)
set_property(GLOBAL APPEND PROPERTY SUB_COMPONENTS ${name})
endfunction()
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cmake_minimum_required(VERSION 3.4.3)
# Add the root project's CMake modules, and the LLVM build's modules to the
# CMake module path.
list(INSERT CMAKE_MODULE_PATH 0
"${CMAKE_CURRENT_SOURCE_DIR}/../cmake"
"${CMAKE_CURRENT_SOURCE_DIR}/../cmake/Modules"
"${LLVM_BINARY_DIR}/lib/cmake/llvm"
)
# Some of the runtimes will conditionally use the compiler-rt sanitizers
# to make this work smoothly we ensure that compiler-rt is added first in
# the list of sub-projects. This allows other sub-projects to have checks
# like `if(TARGET asan)` to enable building with asan.
foreach(entry ${runtimes})
if("${entry}" MATCHES "compiler-rt")
set(compiler_rt_path ${entry})
break()
endif()
endforeach()
if(compiler_rt_path)
list(REMOVE_ITEM runtimes ${compiler_rt_path})
list(INSERT runtimes 0 ${compiler_rt_path})
endif()
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# LLVMConfig.cmake contains a bunch of CMake variables from the LLVM build.
# This file is installed as part of LLVM distributions, so this can be used
# either from a build directory or an installed LLVM.
include(LLVMConfig)
# Setting these variables will allow the sub-build to put their outputs into
# the library and bin directories of the top-level build.
set(LLVM_LIBRARY_OUTPUT_INTDIR ${LLVM_LIBRARY_DIR})
set(LLVM_RUNTIME_OUTPUT_INTDIR ${LLVM_TOOLS_BINARY_DIR})
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# This variable makes sure that e.g. llvm-lit is found.
set(LLVM_MAIN_SRC_DIR ${LLVM_BUILD_MAIN_SRC_DIR})
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foreach(entry ${runtimes})
get_filename_component(projName ${entry} NAME)
# TODO: Clean this up as part of an interface standardization
string(REPLACE "-" "_" canon_name ${projName})
string(TOUPPER ${canon_name} canon_name)
# The subdirectories need to treat this as standalone builds
set(${canon_name}_STANDALONE_BUILD On)
# Setting a variable to let sub-projects detect which other projects
# will be included under here.
set(HAVE_${canon_name} On)
# Between each sub-project we want to cache and clear the LIT properties
set_property(GLOBAL PROPERTY LLVM_LIT_TESTSUITES)
set_property(GLOBAL PROPERTY LLVM_LIT_PARAMS)
set_property(GLOBAL PROPERTY LLVM_LIT_DEPENDS)
set_property(GLOBAL PROPERTY LLVM_LIT_EXTRA_ARGS)
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add_subdirectory(${projName})
get_property(LLVM_LIT_TESTSUITES GLOBAL PROPERTY LLVM_LIT_TESTSUITES)
get_property(LLVM_LIT_PARAMS GLOBAL PROPERTY LLVM_LIT_PARAMS)
get_property(LLVM_LIT_DEPENDS GLOBAL PROPERTY LLVM_LIT_DEPENDS)
get_property(LLVM_LIT_EXTRA_ARGS GLOBAL PROPERTY LLVM_LIT_EXTRA_ARGS)
list(APPEND RUNTIMES_LIT_TESTSUITES ${LLVM_LIT_TESTSUITES})
list(APPEND RUNTIMES_LIT_PARAMS ${LLVM_LIT_PARAMS})
list(APPEND RUNTIMES_LIT_DEPENDS ${LLVM_LIT_DEPENDS})
list(APPEND RUNTIMES_LIT_EXTRA_ARGS ${LLVM_LIT_EXTRA_ARGS})
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endforeach()
if(LLVM_INCLUDE_TESTS)
# Add a global check rule now that all subdirectories have been traversed
# and we know the total set of lit testsuites.
add_lit_target(check-runtimes
"Running all regression tests"
${RUNTIMES_LIT_TESTSUITES}
PARAMS ${RUNTIMES_LIT_PARAMS}
DEPENDS ${RUNTIMES_LIT_DEPENDS}
ARGS ${RUNTIMES_LIT_EXTRA_ARGS}
)
add_custom_target(runtimes-test-depends DEPENDS ${RUNTIMES_LIT_DEPENDS})
endif()
get_property(SUB_COMPONENTS GLOBAL PROPERTY SUB_COMPONENTS)
if(SUB_COMPONENTS)
list(REMOVE_DUPLICATES SUB_COMPONENTS)
foreach(component ${SUB_COMPONENTS})
if(NOT TARGET ${component})
message(SEND_ERROR "Missing target for runtime component ${component}!")
continue()
endif()
if(LLVM_INCLUDE_TESTS AND NOT TARGET check-${component})
message(SEND_ERROR "Missing check target for runtime component ${component}!")
continue()
endif()
if(TARGET install-${component})
list(APPEND SUB_INSTALL_TARGETS install-${component})
endif()
endforeach()
configure_file(
${CMAKE_CURRENT_SOURCE_DIR}/Components.cmake.in
${LLVM_BINARY_DIR}/runtimes/Components.cmake)
endif()
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else() # if this is included from LLVM's CMake
include(${LLVM_BINARY_DIR}/runtimes/Components.cmake OPTIONAL)
set_property(DIRECTORY APPEND PROPERTY CMAKE_CONFIGURE_DEPENDS ${LLVM_BINARY_DIR}/runtimes/Components.cmake)
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include(LLVMExternalProjectUtils)
# If compiler-rt is present we need to build the builtin libraries first. This
# is required because the other runtimes need the builtin libraries present
# before the just-built compiler can pass the configuration tests.
if(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/compiler-rt)
llvm_ExternalProject_Add(builtins
${CMAKE_CURRENT_SOURCE_DIR}/compiler-rt/lib/builtins
CMAKE_ARGS -DLLVM_LIBRARY_OUTPUT_INTDIR=${LLVM_LIBRARY_DIR}
-DLLVM_RUNTIME_OUTPUT_INTDIR=${LLVM_TOOLS_BINARY_DIR}
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PASSTHROUGH_PREFIXES COMPILER_RT
USE_TOOLCHAIN)
set(deps builtins)
endif()
# We create a list the names of all the runtime projects in all uppercase and
# with dashes turned to underscores. This gives us the CMake variable prefixes
# for all variables that will apply to runtimes.
foreach(entry ${runtimes})
get_filename_component(projName ${entry} NAME)
string(REPLACE "-" "_" canon_name ${projName})
string(TOUPPER ${canon_name} canon_name)
list(APPEND prefixes ${canon_name})
string(FIND ${projName} "lib" LIB_IDX)
if(LIB_IDX EQUAL 0)
string(SUBSTRING ${projName} 3 -1 projName)
endif()
list(APPEND runtime_names ${projName})
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endforeach()
if(runtimes)
foreach(runtime_name ${runtime_names})
list(APPEND extra_targets
${runtime_name}
install-${runtime_name}
check-${runtime_name})
endforeach()
if(LLVM_INCLUDE_TESTS)
set(test_targets runtimes-test-depends check-runtimes)
foreach(component ${SUB_COMPONENTS})
list(APPEND SUB_COMPONENT_CHECK_TARGETS check-${component})
endforeach()
endif()
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# Create a runtimes target that uses this file as its top-level CMake file.
# The runtimes target is a configuration of all the runtime libraries
# together in a single CMake invocaiton.
llvm_ExternalProject_Add(runtimes
${CMAKE_CURRENT_SOURCE_DIR}
DEPENDS ${deps}
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# Builtins were built separately above
CMAKE_ARGS -DCOMPILER_RT_BUILD_BUILTINS=Off
-DLLVM_INCLUDE_TESTS=${LLVM_INCLUDE_TESTS}
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PASSTHROUGH_PREFIXES ${prefixes}
EXTRA_TARGETS ${extra_targets}
${test_targets}
${SUB_COMPONENTS}
${SUB_COMPONENT_CHECK_TARGETS}
${SUB_INSTALL_TARGETS}
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USE_TOOLCHAIN)
if(LLVM_INCLUDE_TESTS)
set_property(GLOBAL APPEND PROPERTY LLVM_ADDITIONAL_TEST_DEPENDS runtimes-test-depends)
set_property(GLOBAL APPEND PROPERTY LLVM_ADDITIONAL_TEST_TARGETS check-runtimes)
endif()
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endif()
endif()