# Copyright 2013-2021 Lawrence Livermore National Security, LLC and other
# Spack Project Developers. See the top-level COPYRIGHT file for details.
#
# SPDX-License-Identifier: (Apache-2.0 OR MIT)
import os
import os.path
import re
import sys
import llnl.util.tty as tty
import spack.build_environment
import spack.util.executable
class LlvmDoe(CMakePackage, CudaPackage):
"""This package provides a collection of the experimental LLVM projects done
by the US DOE research and development teams.
"""
homepage = "https://github.com/llvm-doe-org"
url = "https://github.com/llvm-doe-org/llvm-project/archive/llvmorg-10.0.0.zip"
git = "https://github.com/llvm-doe-org/llvm-project"
maintainers = ['vlkale']
tags = ['e4s']
generator = 'Ninja'
family = "compiler" # Used by lmod
version('doe', branch='doe', preferred=True)
version('upstream', branch='llvm.org/main')
version('bolt', branch='bolt/main')
version('clacc', branch='clacc/master')
version('pragma-clang-loop', branch='sollve/pragma-clang-loop')
version('pragma-omp-tile', branch='sollve/pragma-omp-tile')
version('13.0.0', branch='llvm.org/llvmorg-13.0.0')
# NOTE: The debug version of LLVM is an order of magnitude larger than
# the release version, and may take up 20-30 GB of space. If you want
# to save space, build with `build_type=Release`.
variant(
"clang",
default=True,
description="Build the LLVM C/C++/Objective-C compiler frontend",
)
variant(
"flang",
default=False,
description="Build the LLVM Fortran compiler frontend",
)
variant(
"omp_debug",
default=False,
description="Include debugging code in OpenMP runtime libraries",
)
variant("lldb", default=False, description="Build the LLVM debugger")
variant("lld", default=True, description="Build the LLVM linker")
variant("mlir", default=False, description="Build with MLIR support")
variant(
"internal_unwind",
default=True,
description="Build the libcxxabi libunwind",
)
variant(
"polly",
default=True,
description="Build the LLVM polyhedral optimization plugin, "
"only builds for 3.7.0+",
)
variant(
"libcxx",
default=True,
description="Build the LLVM C++ standard library",
)
variant(
"compiler-rt",
default=True,
description="Build LLVM compiler runtime, including sanitizers",
)
variant(
"gold",
default=(sys.platform != "darwin"),
description="Add support for LTO with the gold linker plugin",
)
variant(
"split_dwarf",
default=False,
description="Build with split dwarf information",
)
variant(
"shared_libs",
default=False,
description="Build all components as shared libraries, faster, "
"less memory to build, less stable",
)
variant(
"llvm_dylib",
default=False,
description="Build LLVM shared library, containing all "
"components in a single shared library",
)
variant(
"link_llvm_dylib",
default=False,
description="Link LLVM tools against the LLVM shared library",
)
variant(
"all_targets",
default=False,
description="Build all supported targets, default targets "
"<current arch>,NVPTX,AMDGPU,CppBackend",
)
variant(
"build_type",
default="Release",
description="CMake build type",
values=("Debug", "Release", "RelWithDebInfo", "MinSizeRel"),
)
variant(
"omp_tsan",
default=False,
description="Build with OpenMP capable thread sanitizer",
)
variant(
"omp_as_runtime",
default=True,
description="Build OpenMP runtime via ENABLE_RUNTIME by just-built Clang",
)
variant(
"argobots",
default=False,
description="Build BOLT/OpenMP with Argobots. Effective when @bolt",
)
variant('code_signing', default=False,
description="Enable code-signing on macOS")
variant("python", default=False, description="Install python bindings")
variant('version_suffix', default='none', description="Add a symbol suffix")
variant('z3', default=False, description='Use Z3 for the clang static analyzer')
extends("python", when="+python")
# Build dependency
depends_on("cmake@3.4.3:", type="build")
depends_on('cmake@3.13.4:', type='build', when='@12:')
depends_on("ninja", type="build")
depends_on("python", when="~python", type="build")
depends_on("pkgconfig", type="build")
# Universal dependency
depends_on("python", when="+python")
depends_on("z3", when='+clang+z3')
# openmp dependencies
depends_on("perl-data-dumper", type=("build"))
depends_on("hwloc")
depends_on("libelf", when="+cuda") # libomptarget
depends_on("libffi", when="+cuda") # libomptarget
# ncurses dependency
depends_on("ncurses+termlib")
# lldb dependencies
depends_on("swig", when="+lldb")
depends_on("libedit", when="+lldb")
depends_on("py-six", when="+lldb +python")
# gold support, required for some features
depends_on("binutils+gold+ld+plugins", when="+gold")
conflicts("+llvm_dylib", when="+shared_libs")
conflicts("+link_llvm_dylib", when="~llvm_dylib")
conflicts("+lldb", when="~clang")
conflicts("+libcxx", when="~clang")
conflicts("+internal_unwind", when="~clang")
conflicts("+compiler-rt", when="~clang")
conflicts("+flang", when="~clang")
conflicts('~mlir', when='+flang', msg='Flang requires MLIR')
# Older LLVM do not build with newer compilers, and vice versa
conflicts("%gcc@8:", when="@:5")
conflicts("%gcc@:5.0", when="@8:")
# clang/lib: a lambda parameter cannot shadow an explicitly captured entity
conflicts("%clang@8:", when="@:4")
# When these versions are concretized, but not explicitly with +libcxx, these
# conflicts will enable clingo to set ~libcxx, making the build successful:
# libc++ of LLVM13, see https://libcxx.llvm.org/#platform-and-compiler-support
# @13 does not support %gcc@:10 https://bugs.llvm.org/show_bug.cgi?id=51359#c1
# GCC 11 - latest stable release per GCC release page
# Clang: 11, 12 - latest two stable releases per LLVM release page
# AppleClang 12 - latest stable release per Xcode release page
conflicts("%gcc@:10", when="@13:+libcxx")
conflicts("%clang@:10", when="@13:+libcxx")
conflicts("%apple-clang@:11", when="@13:+libcxx")
# libcxx-4 and compiler-rt-4 fail to build with "newer" clang and gcc versions:
conflicts('%gcc@7:', when='@:4+libcxx')
conflicts('%clang@6:', when='@:4+libcxx')
conflicts('%apple-clang@6:', when='@:4+libcxx')
conflicts('%gcc@7:', when='@:4+compiler-rt')
conflicts('%clang@6:', when='@:4+compiler-rt')
conflicts('%apple-clang@6:', when='@:4+compiler-rt')
# OMP TSAN exists in > 5.x
conflicts("+omp_tsan", when="@:5")
# OpenMP via ENABLE_RUNTIME restrictions
conflicts("+omp_as_runtime", when="~clang", msg="omp_as_runtime requires clang being built.")
conflicts("+omp_as_runtime", when="@:11.1", msg="omp_as_runtime works since LLVM 12.")
# cuda_arch value must be specified
conflicts("cuda_arch=none", when="+cuda", msg="A value for cuda_arch must be specified.")
# MLIR exists in > 10.x
conflicts("+mlir", when="@:9")
# code signing is only necessary on macOS",
conflicts('+code_signing', when='platform=linux')
conflicts('+code_signing', when='platform=cray')
conflicts(
'+code_signing',
when='~lldb platform=darwin',
msg="code signing is only necessary for building the "
"in-tree debug server on macOS. Turning this variant "
"off enables a build of llvm with lldb that uses the "
"system debug server",
)
# LLVM bug https://bugs.llvm.org/show_bug.cgi?id=48234
# CMake bug: https://gitlab.kitware.com/cmake/cmake/-/issues/21469
# Fixed in upstream versions of both
conflicts('^cmake@3.19.0', when='@:11.0.0')
# Backport from llvm master + additional fix
# see https://bugs.llvm.org/show_bug.cgi?id=39696
# for a bug report about this problem in llvm master.
patch("constexpr_longdouble_9.0.patch", when="@9:10.0.0+libcxx")
# https://github.com/spack/spack/issues/19625,
# merged in llvm-11.0.0_rc2
patch("lldb_external_ncurses-10.patch", when="@10.0.0:10+lldb")
# https://github.com/spack/spack/issues/19908
# merged in llvm main prior to 12.0.0
patch("llvm_python_path.patch", when="@11.0.0")
# The functions and attributes below implement external package
# detection for LLVM. See:
#
# https://spack.readthedocs.io/en/latest/packaging_guide.html#making-a-package-discoverable-with-spack-external-find
executables = ['clang', 'flang', 'ld.lld', 'lldb']
@classmethod
def filter_detected_exes(cls, prefix, exes_in_prefix):
result = []
for exe in exes_in_prefix:
# Executables like lldb-vscode-X are daemon listening
# on some port and would hang Spack during detection.
# clang-cl and clang-cpp are dev tools that we don't
# need to test
if any(x in exe for x in ('vscode', 'cpp', '-cl', '-gpu')):
continue
result.append(exe)
return result
@classmethod
def determine_version(cls, exe):
version_regex = re.compile(
# Normal clang compiler versions are left as-is
r'clang version ([^ )\n]+)-svn[~.\w\d-]*|'
# Don't include hyphenated patch numbers in the version
# (see https://github.com/spack/spack/pull/14365 for details)
r'clang version ([^ )\n]+?)-[~.\w\d-]*|'
r'clang version ([^ )\n]+)|'
# LLDB
r'lldb version ([^ )\n]+)|'
# LLD
r'LLD ([^ )\n]+) \(compatible with GNU linkers\)'
)
try:
compiler = Executable(exe)
output = compiler('--version', output=str, error=str)
if 'Apple' in output:
return None
match = version_regex.search(output)
if match:
return match.group(match.lastindex)
except spack.util.executable.ProcessError:
pass
except Exception as e:
tty.debug(e)
return None
@classmethod
def determine_variants(cls, exes, version_str):
variants, compilers = ['+clang'], {}
lld_found, lldb_found = False, False
for exe in exes:
if 'clang++' in exe:
compilers['cxx'] = exe
elif 'clang' in exe:
compilers['c'] = exe
elif 'flang' in exe:
variants.append('+flang')
compilers['fc'] = exe
compilers['f77'] = exe
elif 'ld.lld' in exe:
lld_found = True
compilers['ld'] = exe
elif 'lldb' in exe:
lldb_found = True
compilers['lldb'] = exe
variants.append('+lld' if lld_found else '~lld')
variants.append('+lldb' if lldb_found else '~lldb')
return ''.join(variants), {'compilers': compilers}
@classmethod
def validate_detected_spec(cls, spec, extra_attributes):
# For LLVM 'compilers' is a mandatory attribute
msg = ('the extra attribute "compilers" must be set for '
'the detected spec "{0}"'.format(spec))
assert 'compilers' in extra_attributes, msg
compilers = extra_attributes['compilers']
for key in ('c', 'cxx'):
msg = '{0} compiler not found for {1}'
assert key in compilers, msg.format(key, spec)
@property
def cc(self):
msg = "cannot retrieve C compiler [spec is not concrete]"
assert self.spec.concrete, msg
if self.spec.external:
return self.spec.extra_attributes['compilers'].get('c', None)
result = None
if '+clang' in self.spec:
result = os.path.join(self.spec.prefix.bin, 'clang')
return result
@property
def cxx(self):
msg = "cannot retrieve C++ compiler [spec is not concrete]"
assert self.spec.concrete, msg
if self.spec.external:
return self.spec.extra_attributes['compilers'].get('cxx', None)
result = None
if '+clang' in self.spec:
result = os.path.join(self.spec.prefix.bin, 'clang++')
return result
@property
def fc(self):
msg = "cannot retrieve Fortran compiler [spec is not concrete]"
assert self.spec.concrete, msg
if self.spec.external:
return self.spec.extra_attributes['compilers'].get('fc', None)
result = None
if '+flang' in self.spec:
result = os.path.join(self.spec.prefix.bin, 'flang')
return result
@property
def f77(self):
msg = "cannot retrieve Fortran 77 compiler [spec is not concrete]"
assert self.spec.concrete, msg
if self.spec.external:
return self.spec.extra_attributes['compilers'].get('f77', None)
result = None
if '+flang' in self.spec:
result = os.path.join(self.spec.prefix.bin, 'flang')
return result
@run_before('cmake')
def codesign_check(self):
if self.spec.satisfies("+code_signing"):
codesign = which('codesign')
mkdir('tmp')
llvm_check_file = join_path('tmp', 'llvm_check')
copy('/usr/bin/false', llvm_check_file)
try:
codesign('-f', '-s', 'lldb_codesign', '--dryrun',
llvm_check_file)
except ProcessError:
# Newer LLVM versions have a simple script that sets up
# automatically when run with sudo priviliges
setup = Executable("./lldb/scripts/macos-setup-codesign.sh")
try:
setup()
except Exception:
raise RuntimeError(
'spack was unable to either find or set up'
'code-signing on your system. Please refer to'
'https://lldb.llvm.org/resources/build.html#'
'code-signing-on-macos for details on how to'
'create this identity.'
)
def flag_handler(self, name, flags):
if name == 'cxxflags':
flags.append(self.compiler.cxx11_flag)
return(None, flags, None)
elif name == 'ldflags' and self.spec.satisfies('%intel'):
flags.append('-shared-intel')
return(None, flags, None)
return(flags, None, None)
def setup_build_environment(self, env):
"""When using %clang, add only its ld.lld-$ver and/or ld.lld to our PATH"""
if self.compiler.name in ['clang', 'apple-clang']:
for lld in 'ld.lld-{0}'.format(self.compiler.version.version[0]), 'ld.lld':
bin = os.path.join(os.path.dirname(self.compiler.cc), lld)
sym = os.path.join(self.stage.path, 'ld.lld')
if os.path.exists(bin) and not os.path.exists(sym):
mkdirp(self.stage.path)
os.symlink(bin, sym)
env.prepend_path('PATH', self.stage.path)
def setup_run_environment(self, env):
if "+clang" in self.spec:
env.set("CC", join_path(self.spec.prefix.bin, "clang"))
env.set("CXX", join_path(self.spec.prefix.bin, "clang++"))
if "+flang" in self.spec:
env.set("FC", join_path(self.spec.prefix.bin, "flang"))
env.set("F77", join_path(self.spec.prefix.bin, "flang"))
root_cmakelists_dir = "llvm"
def cmake_args(self):
spec = self.spec
define = CMakePackage.define
from_variant = self.define_from_variant
python = spec['python']
cmake_args = [
define("LLVM_REQUIRES_RTTI", True),
define("LLVM_ENABLE_RTTI", True),
define("LLVM_ENABLE_EH", True),
define("CLANG_DEFAULT_OPENMP_RUNTIME", "libomp"),
define("PYTHON_EXECUTABLE", python.command.path),
define("LIBOMP_USE_HWLOC", True),
define("LIBOMP_HWLOC_INSTALL_DIR", spec["hwloc"].prefix),
]
version_suffix = spec.variants['version_suffix'].value
if version_suffix != 'none':
cmake_args.append(define('LLVM_VERSION_SUFFIX', version_suffix))
if python.version >= Version("3"):
cmake_args.append(define("Python3_EXECUTABLE", python.command.path))
else:
cmake_args.append(define("Python2_EXECUTABLE", python.command.path))
projects = []
runtimes = []
if "+cuda" in spec:
cmake_args.extend([
define("CUDA_TOOLKIT_ROOT_DIR", spec["cuda"].prefix),
define("LIBOMPTARGET_NVPTX_COMPUTE_CAPABILITIES",
",".join(spec.variants["cuda_arch"].value)),
define("CLANG_OPENMP_NVPTX_DEFAULT_ARCH",
"sm_{0}".format(spec.variants["cuda_arch"].value[-1])),
])
if "+omp_as_runtime" in spec:
cmake_args.extend([
define("LIBOMPTARGET_NVPTX_ENABLE_BCLIB", True),
# work around bad libelf detection in libomptarget
define("LIBOMPTARGET_DEP_LIBELF_INCLUDE_DIR",
spec["libelf"].prefix.include),
])
else:
# still build libomptarget but disable cuda
cmake_args.extend([
define("CUDA_TOOLKIT_ROOT_DIR", "IGNORE"),
define("CUDA_SDK_ROOT_DIR", "IGNORE"),
define("CUDA_NVCC_EXECUTABLE", "IGNORE"),
define("LIBOMPTARGET_DEP_CUDA_DRIVER_LIBRARIES", "IGNORE"),
])
cmake_args.append(from_variant("LIBOMPTARGET_ENABLE_DEBUG", "omp_debug"))
if "+lldb" in spec:
if spec.version >= Version('10'):
cmake_args.append(from_variant("LLDB_ENABLE_PYTHON", 'python'))
else:
cmake_args.append(define("LLDB_DISABLE_PYTHON",
'~python' in spec))
if spec.satisfies("@5.0.0: +python"):
cmake_args.append(define("LLDB_USE_SYSTEM_SIX", True))
if "+gold" in spec:
cmake_args.append(
define("LLVM_BINUTILS_INCDIR", spec["binutils"].prefix.include)
)
if "+clang" in spec:
projects.append("clang")
projects.append("clang-tools-extra")
if "+omp_as_runtime" in spec:
runtimes.append("openmp")
else:
projects.append("openmp")
if self.spec.satisfies("@8"):
cmake_args.append(define('CLANG_ANALYZER_ENABLE_Z3_SOLVER',
self.spec.satisfies('@8+z3')))
if self.spec.satisfies("@9:"):
cmake_args.append(define('LLVM_ENABLE_Z3_SOLVER',
self.spec.satisfies('@9:+z3')))
if "+flang" in spec:
projects.append("flang")
if "+lldb" in spec:
projects.append("lldb")
if "+lld" in spec:
projects.append("lld")
if "+compiler-rt" in spec:
projects.append("compiler-rt")
if "+libcxx" in spec:
projects.append("libcxx")
projects.append("libcxxabi")
if "+mlir" in spec:
projects.append("mlir")
if "+internal_unwind" in spec:
projects.append("libunwind")
if "+polly" in spec:
projects.append("polly")
cmake_args.append(define("LINK_POLLY_INTO_TOOLS", True))
cmake_args.extend([
from_variant("BUILD_SHARED_LIBS", "shared_libs"),
from_variant("LLVM_BUILD_LLVM_DYLIB", "llvm_dylib"),
from_variant("LLVM_LINK_LLVM_DYLIB", "link_llvm_dylib"),
from_variant("LLVM_USE_SPLIT_DWARF", "split_dwarf"),
# By default on Linux, libc++.so is a ldscript. CMake fails to add
# CMAKE_INSTALL_RPATH to it, which fails. Statically link libc++abi.a
# into libc++.so, linking with -lc++ or -stdlib=libc++ is enough.
define('LIBCXX_ENABLE_STATIC_ABI_LIBRARY', True)
])
if "+all_targets" not in spec: # all is default on cmake
targets = ["NVPTX", "AMDGPU"]
if spec.version < Version("3.9.0"):
# Starting in 3.9.0 CppBackend is no longer a target (see
# LLVM_ALL_TARGETS in llvm's top-level CMakeLists.txt for
# the complete list of targets)
targets.append("CppBackend")
if spec.target.family in ("x86", "x86_64"):
targets.append("X86")
elif spec.target.family == "arm":
targets.append("ARM")
elif spec.target.family == "aarch64":
targets.append("AArch64")
elif spec.target.family in ("sparc", "sparc64"):
targets.append("Sparc")
elif spec.target.family in ("ppc64", "ppc64le", "ppc", "ppcle"):
targets.append("PowerPC")
cmake_args.append(define("LLVM_TARGETS_TO_BUILD", targets))
cmake_args.append(from_variant("LIBOMP_TSAN_SUPPORT", "omp_tsan"))
if spec.satisfies("@bolt"):
projects.remove("openmp")
projects.append("bolt")
cmake_args.append("-DLIBOMP_USE_BOLT_DEFAULT=ON")
if "+argobots" in spec and spec.satisfies("@bolt"):
cmake_args.append("-DLIBOMP_USE_ARGOBOTS=ON")
if self.compiler.name == "gcc":
compiler = Executable(self.compiler.cc)
gcc_output = compiler('-print-search-dirs', output=str, error=str)
for line in gcc_output.splitlines():
if line.startswith("install:"):
# Get path and strip any whitespace
# (causes oddity with ancestor)
gcc_prefix = line.split(":")[1].strip()
gcc_prefix = ancestor(gcc_prefix, 4)
break
cmake_args.append(define("GCC_INSTALL_PREFIX", gcc_prefix))
# if spec.satisfies("platform=cray") or spec.satisfies("platform=linux"):
# cmake_args.append("-DCMAKE_BUILD_WITH_INSTALL_RPATH=1")
if self.spec.satisfies("~code_signing platform=darwin"):
cmake_args.append(define('LLDB_USE_SYSTEM_DEBUGSERVER', True))
# Semicolon seperated list of projects to enable
cmake_args.append(define("LLVM_ENABLE_PROJECTS", projects))
# Semicolon seperated list of runtimes to enable
if runtimes:
cmake_args.append(define("LLVM_ENABLE_RUNTIMES", runtimes))
return cmake_args
@run_after("install")
def post_install(self):
spec = self.spec
define = CMakePackage.define
# unnecessary if we build openmp via LLVM_ENABLE_RUNTIMES
if "+cuda ~omp_as_runtime" in self.spec:
ompdir = "build-bootstrapped-omp"
prefix_paths = spack.build_environment.get_cmake_prefix_path(self)
prefix_paths.append(str(spec.prefix))
# rebuild libomptarget to get bytecode runtime library files
with working_dir(ompdir, create=True):
cmake_args = [
'-G', 'Ninja',
define('CMAKE_BUILD_TYPE', spec.variants['build_type'].value),
define("CMAKE_C_COMPILER", spec.prefix.bin + "/clang"),
define("CMAKE_CXX_COMPILER", spec.prefix.bin + "/clang++"),
define("CMAKE_INSTALL_PREFIX", spec.prefix),
define('CMAKE_PREFIX_PATH', prefix_paths)
]
cmake_args.extend(self.cmake_args())
cmake_args.extend([
define("LIBOMPTARGET_NVPTX_ENABLE_BCLIB", True),
define("LIBOMPTARGET_DEP_LIBELF_INCLUDE_DIR",
spec["libelf"].prefix.include),
self.stage.source_path + "/openmp",
])
cmake(*cmake_args)
ninja()
ninja("install")
if "+python" in self.spec:
install_tree("llvm/bindings/python", site_packages_dir)
if "+clang" in self.spec:
install_tree("clang/bindings/python", site_packages_dir)
with working_dir(self.build_directory):
install_tree("bin", join_path(self.prefix, "libexec", "llvm"))