blob: d97adbccf493457e26d215c2a30fb78b5ec43c94 [file] [log] [blame]
cmake_minimum_required(VERSION 3.13.4)
if(NOT DEFINED LLVM_COMMON_CMAKE_UTILS)
set(LLVM_COMMON_CMAKE_UTILS ${CMAKE_CURRENT_SOURCE_DIR}/../cmake)
endif()
include(${LLVM_COMMON_CMAKE_UTILS}/Modules/CMakePolicy.cmake
NO_POLICY_SCOPE)
set(CMAKE_BUILD_WITH_INSTALL_NAME_DIR ON)
# Flang requires C++17.
set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED TRUE)
set(CMAKE_CXX_EXTENSIONS OFF)
set(FLANG_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR})
if (CMAKE_SOURCE_DIR STREQUAL CMAKE_BINARY_DIR AND NOT MSVC_IDE)
message(FATAL_ERROR "In-source builds are not allowed. \
Please create a directory and run cmake from there,\
passing the path to this source directory as the last argument.\
This process created the file `CMakeCache.txt' and the directory\
`CMakeFiles'. Please delete them.")
endif()
option(FLANG_ENABLE_WERROR "Fail and stop building flang if a warning is triggered." OFF)
# Check for a standalone build and configure as appropriate from
# there.
if (CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
message("Building Flang as a standalone project.")
project(Flang)
set(FLANG_STANDALONE_BUILD ON)
else()
set(FLANG_STANDALONE_BUILD OFF)
endif()
# Must go below project(..)
include(GNUInstallDirs)
# MSVC + clang-cl build requires clang_rt.builtin.${target} library
if (MSVC AND CMAKE_CXX_COMPILER_ID MATCHES Clang)
include(HandleCompilerRT)
find_compiler_rt_library(builtins CLANG_RT_BUILTINS_LIBRARY)
get_filename_component(LIBDIR "${CLANG_RT_BUILTINS_LIBRARY}" DIRECTORY)
if (IS_DIRECTORY "${LIBDIR}")
link_libraries(${CLANG_RT_BUILTINS_LIBRARY})
endif()
endif()
if (FLANG_STANDALONE_BUILD)
set(FLANG_BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR})
if (NOT MSVC_IDE)
set(LLVM_ENABLE_ASSERTIONS ${ENABLE_ASSERTIONS}
CACHE BOOL "Enable assertions")
# Assertions follow llvm's configuration.
mark_as_advanced(LLVM_ENABLE_ASSERTIONS)
endif()
# We need a pre-built/installed version of LLVM.
find_package(LLVM REQUIRED HINTS "${LLVM_CMAKE_DIR}")
# If the user specifies a relative path to LLVM_DIR, the calls to include
# LLVM modules fail. Append the absolute path to LLVM_DIR instead.
get_filename_component(LLVM_DIR_ABSOLUTE ${LLVM_DIR} REALPATH)
list(APPEND CMAKE_MODULE_PATH ${LLVM_DIR_ABSOLUTE})
# Users might specify a path to CLANG_DIR that's:
# * a full path, or
# * a path relative to the path of this script.
# Append the absolute path to CLANG_DIR so that find_package works in both
# cases.
get_filename_component(
CLANG_DIR_ABSOLUTE
${CLANG_DIR}
REALPATH
${CMAKE_CURRENT_SOURCE_DIR})
list(APPEND CMAKE_MODULE_PATH ${CLANG_DIR_ABSOLUTE})
# TODO: Remove when libclangDriver is lifted out of Clang
find_package(Clang REQUIRED PATHS "${CLANG_DIR_ABSOLUTE}" NO_DEFAULT_PATH)
if (NOT Clang_FOUND)
message(FATAL_ERROR "Failed to find Clang")
endif()
# If LLVM links to zlib we need the imported targets so we can too.
if(LLVM_ENABLE_ZLIB)
find_package(ZLIB REQUIRED)
endif()
option(LLVM_ENABLE_PEDANTIC "Compile with pedantic enabled." ON)
if(CMAKE_COMPILER_IS_GNUCXX)
set(USE_NO_MAYBE_UNINITIALIZED 1)
endif()
include(CMakeParseArguments)
include(AddLLVM)
include(HandleLLVMOptions)
include(VersionFromVCS)
include(GetErrcMessages)
include(AddClang)
include(TableGen)
find_package(MLIR REQUIRED CONFIG)
# Use SYSTEM for the same reasons as for LLVM includes
include_directories(SYSTEM ${MLIR_INCLUDE_DIRS})
# If the user specifies a relative path to MLIR_DIR, the calls to include
# MLIR modules fail. Append the absolute path to MLIR_DIR instead.
get_filename_component(MLIR_DIR_ABSOLUTE ${MLIR_DIR} REALPATH)
list(APPEND CMAKE_MODULE_PATH ${MLIR_DIR_ABSOLUTE})
include(AddMLIR)
find_program(MLIR_TABLEGEN_EXE "mlir-tblgen" ${LLVM_TOOLS_BINARY_DIR}
NO_DEFAULT_PATH)
option(LLVM_INSTALL_TOOLCHAIN_ONLY
"Only include toolchain files in the 'install' target." OFF)
option(LLVM_FORCE_USE_OLD_HOST_TOOLCHAIN
"Set to ON to force using an old, unsupported host toolchain." OFF)
# Add LLVM include files as if they were SYSTEM because there are complex unused
# parameter issues that may or may not appear depending on the environments and
# compilers (ifdefs are involved). This allows warnings from LLVM headers to be
# ignored while keeping -Wunused-parameter a fatal error inside f18 code base.
# This may have to be fine-tuned if flang headers are consider part of this
# LLVM_INCLUDE_DIRS when merging in the monorepo (Warning from flang headers
# should not be suppressed).
include_directories(SYSTEM ${LLVM_INCLUDE_DIRS})
add_definitions(${LLVM_DEFINITIONS})
# LLVM's cmake configuration files currently sneak in a c++11 flag.
# We look for it here and remove it from Flang's compile flags to
# avoid some mixed compilation flangs (e.g. -std=c++11 ... -std=c++17).
if (DEFINED LLVM_CXX_STD)
message("LLVM configuration set a C++ standard: ${LLVM_CXX_STD}")
if (NOT LLVM_CXX_STD EQUAL "c++17")
message("Flang: Overriding LLVM's 'cxx_std' setting...")
message(" removing '-std=${LLVM_CXX_STD}'")
message(" CMAKE_CXX_FLAGS='${CMAKE_CXX_FLAGS}'")
string(REPLACE " -std=${LLVM_CXX_STD}" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
message(" [NEW] CMAKE_CXX_FLAGS='${CMAKE_CXX_FLAGS}'")
endif()
endif()
link_directories("${LLVM_LIBRARY_DIR}")
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
set(CMAKE_LIBRARY_OUTPUT_DIRECTORY
${CMAKE_BINARY_DIR}/lib${LLVM_LIBDIR_SUFFIX})
set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY
${CMAKE_BINARY_DIR}/lib${LLVM_LIBDIR_SUFFIX})
set(LLVM_EXTERNAL_LIT "${LLVM_TOOLS_BINARY_DIR}/llvm-lit" CACHE STRING "Command used to spawn lit")
option(FLANG_INCLUDE_TESTS
"Generate build targets for the Flang unit tests."
ON)
get_errc_messages(LLVM_LIT_ERRC_MESSAGES)
#Handle unittests when out-of-tree
set(FLANG_GTEST_AVAIL 0)
if (FLANG_INCLUDE_TESTS)
set(UNITTEST_DIR ${LLVM_THIRD_PARTY_DIR}/unittest)
if(EXISTS ${UNITTEST_DIR}/googletest/include/gtest/gtest.h)
if (NOT TARGET llvm_gtest)
add_subdirectory(${UNITTEST_DIR} third-party/unittest)
endif()
set(FLANG_GTEST_AVAIL 1)
else()
message(WARNING
"Unit-tests will be skipped as LLVM install does not include google-test related headers and libraries.")
set(FLANG_GTEST_AVAIL 0)
endif()
endif()
if (FLANG_GTEST_AVAIL)
add_custom_target(check-all DEPENDS check-flang FlangUnitTests)
else()
add_custom_target(check-all DEPENDS check-flang )
endif()
if (LLVM_BUILD_DOCS)
add_custom_target(doxygen ALL)
endif()
else()
option(FLANG_INCLUDE_TESTS
"Generate build targets for the Flang unit tests."
${LLVM_INCLUDE_TESTS})
set(FLANG_GTEST_AVAIL 1)
if(FLANG_STANDALONE_BUILD)
set(FLANG_BINARY_DIR ${CMAKE_BINARY_DIR}/tools/flang)
else()
set(FLANG_BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR})
endif()
set(MLIR_MAIN_SRC_DIR ${LLVM_MAIN_SRC_DIR}/../mlir ) # --src-root
set(MLIR_INCLUDE_DIR ${MLIR_MAIN_SRC_DIR}/include ) # --includedir
set(MLIR_TABLEGEN_OUTPUT_DIR ${CMAKE_BINARY_DIR}/tools/mlir/include)
include_directories(SYSTEM ${MLIR_INCLUDE_DIR})
include_directories(SYSTEM ${MLIR_TABLEGEN_OUTPUT_DIR})
endif()
set(FLANG_TOOLS_INSTALL_DIR "${CMAKE_INSTALL_BINDIR}" CACHE PATH
"Path for binary subdirectory (defaults to '${CMAKE_INSTALL_BINDIR}')")
mark_as_advanced(FLANG_TOOLS_INSTALL_DIR)
set(FLANG_INTRINSIC_MODULES_DIR ${CMAKE_BINARY_DIR}/include/flang)
set(FLANG_INCLUDE_DIR ${FLANG_BINARY_DIR}/include)
# TODO: Remove when libclangDriver is lifted out of Clang
if(FLANG_STANDALONE_BUILD)
set(CLANG_INCLUDE_DIR ${CLANG_INCLUDE_DIRS} )
# No need to specify TableGen output dir as that's embedded in CLANG_DIR
else()
set(CLANG_INCLUDE_DIR ${LLVM_MAIN_SRC_DIR}/../clang/include )
# Specify TableGen output dir for things like DiagnosticCommonKinds.inc,
# DiagnosticDriverKinds.inc (required for reporting diagnostics)
set(CLANG_TABLEGEN_OUTPUT_DIR ${CMAKE_BINARY_DIR}/tools/clang/include)
include_directories(SYSTEM ${CLANG_TABLEGEN_OUTPUT_DIR})
endif()
include_directories(SYSTEM ${CLANG_INCLUDE_DIR})
# tco tool and FIR lib output directories
if(FLANG_STANDALONE_BUILD)
set(LLVM_RUNTIME_OUTPUT_INTDIR ${CMAKE_BINARY_DIR}/bin)
set(LLVM_LIBRARY_OUTPUT_INTDIR ${CMAKE_BINARY_DIR}/lib)
endif()
# Always build tco tool
set(LLVM_BUILD_TOOLS ON)
include_directories(BEFORE
${FLANG_BINARY_DIR}/include
${FLANG_SOURCE_DIR}/include)
# Add Flang-centric modules to cmake path.
list(INSERT CMAKE_MODULE_PATH 0
"${FLANG_SOURCE_DIR}/cmake/modules"
"${LLVM_COMMON_CMAKE_UTILS}/Modules"
)
include(AddFlang)
if (NOT DEFAULT_SYSROOT)
set(DEFAULT_SYSROOT "" CACHE PATH
"The <path> to use for the system root for all compiler invocations (--sysroot=<path>).")
endif()
if (NOT ENABLE_LINKER_BUILD_ID)
set(ENABLE_LINKER_BUILD_ID OFF CACHE BOOL "pass --build-id to ld")
endif()
set(FLANG_DEFAULT_LINKER "" CACHE STRING
"Default linker to use (linker name or absolute path, empty for platform default)")
set(FLANG_DEFAULT_RTLIB "" CACHE STRING
"Default Fortran runtime library to use (\"libFortranRuntime\"), leave empty for platform default.")
if (NOT(FLANG_DEFAULT_RTLIB STREQUAL ""))
message(WARNING "Resetting Flang's default runtime library to use platform default.")
set(FLANG_DEFAULT_RTLIB "" CACHE STRING
"Default runtime library to use (empty for platform default)" FORCE)
endif()
set(PACKAGE_VERSION "${LLVM_PACKAGE_VERSION}")
if (NOT DEFINED FLANG_VERSION_MAJOR)
set(FLANG_VERSION_MAJOR ${LLVM_VERSION_MAJOR})
endif()
if (NOT DEFINED FLANG_VERSION_MINOR)
set(FLANG_VERSION_MINOR ${LLVM_VERSION_MINOR})
endif()
if (NOT DEFINED FLANG_VERSION_PATCHLEVEL)
set(FLANG_VERSION_PATCHLEVEL ${LLVM_VERSION_PATCH})
endif()
# Unlike PACKAGE_VERSION, FLANG_VERSION does not include LLVM_VERSION_SUFFIX.
set(FLANG_VERSION "${FLANG_VERSION_MAJOR}.${FLANG_VERSION_MINOR}.${FLANG_VERSION_PATCHLEVEL}")
message(STATUS "Flang version: ${FLANG_VERSION}")
# Flang executable version information
set(FLANG_EXECUTABLE_VERSION
"${FLANG_VERSION_MAJOR}" CACHE STRING
"Major version number to appended to the flang executable name.")
set(LIBFLANG_LIBRARY_VERSION
"${FLANG_VERSION_MAJOR}" CACHE STRING
"Major version number to appended to the libflang library.")
mark_as_advanced(FLANG_EXECUTABLE_VERSION LIBFLANG_LIBRARY_VERSION)
set(FLANG_VENDOR ${PACKAGE_VENDOR} CACHE STRING
"Vendor-specific Flang version information.")
set(FLANG_VENDOR_UTI "org.llvm.flang" CACHE STRING
"Vendor-specific uti.")
if (FLANG_VENDOR)
add_definitions(-DFLANG_VENDOR="${FLANG_VENDOR} ")
endif()
set(FLANG_REPOSITORY_STRING "" CACHE STRING
"Vendor-specific text for showing the repository the source is taken from.")
if (FLANG_REPOSITORY_STRING)
add_definitions(-DFLANG_REPOSITORY_STRING="${FLANG_REPOSITORY_STRING}")
endif()
include(TestBigEndian)
test_big_endian(IS_BIGENDIAN)
if (IS_BIGENDIAN)
add_compile_definitions(FLANG_BIG_ENDIAN=1)
else ()
add_compile_definitions(FLANG_LITTLE_ENDIAN=1)
endif ()
# Configure Flang's Version.inc file.
configure_file(
${CMAKE_CURRENT_SOURCE_DIR}/include/flang/Version.inc.in
${CMAKE_CURRENT_BINARY_DIR}/include/flang/Version.inc)
# Configure Flang's version info header file.
configure_file(
${FLANG_SOURCE_DIR}/include/flang/Config/config.h.cmake
${FLANG_BINARY_DIR}/include/flang/Config/config.h)
if (FLANG_ENABLE_WERROR)
# The following is taken from llvm/cmake/modules/HandleLLVMOptions.cmake
# Keep this up-to-date with that file
if( MSVC )
append("/WX" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
endif()
if ( LLVM_COMPILER_IS_GCC_COMPATIBLE )
append("-Werror" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
append("-Wno-error" CMAKE_REQUIRED_FLAGS)
endif( LLVM_COMPILER_IS_GCC_COMPATIBLE )
endif()
# Builtin check_cxx_compiler_flag doesn't seem to work correctly
macro(check_compiler_flag flag resultVar)
unset(${resultVar} CACHE)
check_cxx_compiler_flag("${flag}" ${resultVar})
endmacro()
check_compiler_flag("-Werror -Wno-deprecated-copy" CXX_SUPPORTS_NO_DEPRECATED_COPY_FLAG)
if (CXX_SUPPORTS_NO_DEPRECATED_COPY_FLAG)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-deprecated-copy")
endif()
check_compiler_flag("-Wstring-conversion" CXX_SUPPORTS_NO_STRING_CONVERSION_FLAG)
if (CXX_SUPPORTS_NO_STRING_CONVERSION_FLAG)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-string-conversion")
endif()
check_compiler_flag("-Wno-ctad-maybe-unsupported" CXX_SUPPORTS_NO_CTAD_MAYBE_UNSUPPORTED_FLAG)
if (CXX_SUPPORTS_NO_CTAD_MAYBE_UNSUPPORTED_FLAG)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-ctad-maybe-unsupported")
endif()
# Add appropriate flags for GCC
if (LLVM_COMPILER_IS_GCC_COMPATIBLE)
if (NOT "${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-strict-aliasing -fno-semantic-interposition")
else()
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-unused-command-line-argument -Wstring-conversion \
-Wcovered-switch-default")
endif() # Clang.
check_cxx_compiler_flag("-Werror -Wnested-anon-types" CXX_SUPPORTS_NO_NESTED_ANON_TYPES_FLAG)
if (CXX_SUPPORTS_NO_NESTED_ANON_TYPES_FLAG)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-nested-anon-types")
endif()
# Add to build type flags.
set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -DDEBUGF18")
set(CMAKE_CXX_FLAGS_MINSIZEREL "${CMAKE_CXX_FLAGS_MINSIZEREL} -DCHECK=\"(void)\"")
# Building shared libraries is bad for performance with GCC by default
# due to the need to preserve the right to override external entry points
if (BUILD_SHARED_LIBS AND NOT (CMAKE_CXX_COMPILER_ID MATCHES "Clang"))
set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -fno-semantic-interposition")
endif()
endif()
list(REMOVE_DUPLICATES CMAKE_CXX_FLAGS)
# Determine HOST_LINK_VERSION on Darwin.
set(HOST_LINK_VERSION)
if (APPLE)
set(LD_V_OUTPUT)
execute_process(
COMMAND sh -c "${CMAKE_LINKER} -v 2>&1 | head -1"
RESULT_VARIABLE HAD_ERROR
OUTPUT_VARIABLE LD_V_OUTPUT)
if (NOT HAD_ERROR)
if ("${LD_V_OUTPUT}" MATCHES ".*ld64-([0-9.]+).*")
string(REGEX REPLACE ".*ld64-([0-9.]+).*" "\\1" HOST_LINK_VERSION ${LD_V_OUTPUT})
elseif ("${LD_V_OUTPUT}" MATCHES "[^0-9]*([0-9.]+).*")
string(REGEX REPLACE "[^0-9]*([0-9.]+).*" "\\1" HOST_LINK_VERSION ${LD_V_OUTPUT})
endif()
else()
message(FATAL_ERROR "${CMAKE_LINKER} failed with status ${HAD_ERROR}")
endif()
endif()
include(CMakeParseArguments)
include(AddFlang)
if (FLANG_INCLUDE_TESTS)
add_compile_definitions(FLANG_INCLUDE_TESTS=1)
endif()
add_subdirectory(include)
add_subdirectory(lib)
add_subdirectory(cmake/modules)
option(FLANG_BUILD_TOOLS
"Build the Flang tools. If OFF, just generate build targets." ON)
if (FLANG_BUILD_TOOLS)
add_subdirectory(tools)
endif()
add_subdirectory(runtime)
option(FLANG_BUILD_EXAMPLES "Build Flang example programs by default." OFF)
if (FLANG_BUILD_EXAMPLES AND FLANG_STANDALONE_BUILD)
message(FATAL_ERROR "Examples are not supported in out-of-tree builds.")
endif()
add_subdirectory(examples)
if (FLANG_INCLUDE_TESTS)
add_subdirectory(test)
if (FLANG_GTEST_AVAIL)
add_subdirectory(unittests)
endif ()
endif()
option(FLANG_INCLUDE_DOCS "Generate build targets for the Flang docs."
${LLVM_INCLUDE_DOCS})
if (FLANG_INCLUDE_DOCS)
add_subdirectory(docs)
endif()
# Custom target to install Flang libraries.
add_custom_target(flang-libraries)
set_target_properties(flang-libraries PROPERTIES FOLDER "Misc")
if (NOT LLVM_ENABLE_IDE)
add_llvm_install_targets(install-flang-libraries
DEPENDS flang-libraries
COMPONENT flang-libraries)
endif()
get_property(FLANG_LIBS GLOBAL PROPERTY FLANG_LIBS)
if (FLANG_LIBS)
list(REMOVE_DUPLICATES FLANG_LIBS)
foreach(lib ${FLANG_LIBS})
add_dependencies(flang-libraries ${lib})
if (NOT LLVM_ENABLE_IDE)
add_dependencies(install-flang-libraries install-${lib})
endif()
endforeach()
endif()
if (NOT LLVM_INSTALL_TOOLCHAIN_ONLY)
install(DIRECTORY include/flang
DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}"
COMPONENT flang-headers
FILES_MATCHING
PATTERN "*.def"
PATTERN "*.h"
PATTERN "*.inc"
PATTERN "*.td"
PATTERN "config.h" EXCLUDE
PATTERN ".git" EXCLUDE
PATTERN "CMakeFiles" EXCLUDE)
install(DIRECTORY ${FLANG_INCLUDE_DIR}/flang
DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}"
COMPONENT flang-headers
FILES_MATCHING
PATTERN "*.inc"
)
endif()