"""llvm Tool-specific initialization for LLVM """ # # Copyright (c) 2009 VMware, Inc. # # Permission is hereby granted, free of charge, to any person obtaining # a copy of this software and associated documentation files (the # "Software"), to deal in the Software without restriction, including # without limitation the rights to use, copy, modify, merge, publish, # distribute, sublicense, and/or sell copies of the Software, and to # permit persons to whom the Software is furnished to do so, subject to # the following conditions: # # The above copyright notice and this permission notice shall be included # in all copies or substantial portions of the Software. # # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY # KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE # WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND # NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE # LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. # import os import os.path import re import platform as host_platform import sys import distutils.version import SCons.Errors import SCons.Util required_llvm_version = '3.9' def generate(env): env['llvm'] = False try: llvm_dir = os.environ['LLVM'] except KeyError: # Do nothing -- use the system headers/libs llvm_dir = None else: if not os.path.isdir(llvm_dir): raise SCons.Errors.InternalError("Specified LLVM directory not found") if env['debug']: llvm_subdir = 'Debug' else: llvm_subdir = 'Release' llvm_bin_dir = os.path.join(llvm_dir, llvm_subdir, 'bin') if not os.path.isdir(llvm_bin_dir): llvm_bin_dir = os.path.join(llvm_dir, 'bin') if not os.path.isdir(llvm_bin_dir): raise SCons.Errors.InternalError("LLVM binary directory not found") env.PrependENVPath('PATH', llvm_bin_dir) if env['platform'] == 'windows': # XXX: There is no llvm-config on Windows, so assume a standard layout if llvm_dir is None: print('scons: LLVM environment variable must be specified when building for windows') return # Try to determine the LLVM version from llvm/Config/config.h llvm_config = os.path.join(llvm_dir, 'include/llvm/Config/llvm-config.h') if not os.path.exists(llvm_config): print('scons: could not find %s' % llvm_config) return llvm_version_major_re = re.compile(r'^#define LLVM_VERSION_MAJOR ([0-9]+)') llvm_version_minor_re = re.compile(r'^#define LLVM_VERSION_MINOR ([0-9]+)') llvm_version = None llvm_version_major = None llvm_version_minor = None for line in open(llvm_config, 'rt'): mo = llvm_version_major_re.match(line) if mo: llvm_version_major = mo.group(1) mo = llvm_version_minor_re.match(line) if mo: llvm_version_minor = mo.group(1) if llvm_version_major is not None and llvm_version_minor is not None: llvm_version = distutils.version.LooseVersion('%s.%s' % (llvm_version_major, llvm_version_minor)) if llvm_version is None: print('scons: could not determine the LLVM version from %s' % llvm_config) return if llvm_version < distutils.version.LooseVersion(required_llvm_version): print('scons: LLVM version %s found, but %s is required' % (llvm_version, required_llvm_version)) return env.Prepend(CPPPATH = [os.path.join(llvm_dir, 'include')]) env.Prepend(LIBPATH = [os.path.join(llvm_dir, 'lib')]) # LLVM 5.0 and newer requires MinGW w/ pthreads due to use of std::thread and friends. if llvm_version >= distutils.version.LooseVersion('5.0') and env['crosscompile']: assert env['gcc'] env.AppendUnique(CXXFLAGS = ['-posix']) # LIBS should match the output of `llvm-config --libs engine mcjit bitwriter x86asmprinter irreader` for LLVM<=7.0 # and `llvm-config --libs engine irreader` for LLVM>=8.0 # LLVMAggressiveInstCombine library part of engine component can be safely omitted as it's not used. if llvm_version >= distutils.version.LooseVersion('9.0'): env.Prepend(LIBS = [ 'LLVMX86Disassembler', 'LLVMX86AsmParser', 'LLVMX86CodeGen', 'LLVMSelectionDAG', 'LLVMAsmPrinter', 'LLVMDebugInfoCodeView', 'LLVMCodeGen', 'LLVMScalarOpts', 'LLVMInstCombine', 'LLVMTransformUtils', 'LLVMBitWriter', 'LLVMX86Desc', 'LLVMMCDisassembler', 'LLVMX86Info', 'LLVMX86Utils', 'LLVMMCJIT', 'LLVMExecutionEngine', 'LLVMTarget', 'LLVMAnalysis', 'LLVMProfileData', 'LLVMRuntimeDyld', 'LLVMObject', 'LLVMMCParser', 'LLVMBitReader', 'LLVMMC', 'LLVMCore', 'LLVMSupport', 'LLVMIRReader', 'LLVMAsmParser', 'LLVMDemangle', 'LLVMGlobalISel', 'LLVMDebugInfoMSF', 'LLVMBinaryFormat', 'LLVMRemarks', 'LLVMBitstreamReader', 'LLVMDebugInfoDWARF', ]) elif llvm_version >= distutils.version.LooseVersion('5.0'): env.Prepend(LIBS = [ 'LLVMX86Disassembler', 'LLVMX86AsmParser', 'LLVMX86CodeGen', 'LLVMSelectionDAG', 'LLVMAsmPrinter', 'LLVMDebugInfoCodeView', 'LLVMCodeGen', 'LLVMScalarOpts', 'LLVMInstCombine', 'LLVMTransformUtils', 'LLVMBitWriter', 'LLVMX86Desc', 'LLVMMCDisassembler', 'LLVMX86Info', 'LLVMX86AsmPrinter', 'LLVMX86Utils', 'LLVMMCJIT', 'LLVMExecutionEngine', 'LLVMTarget', 'LLVMAnalysis', 'LLVMProfileData', 'LLVMRuntimeDyld', 'LLVMObject', 'LLVMMCParser', 'LLVMBitReader', 'LLVMMC', 'LLVMCore', 'LLVMSupport', 'LLVMIRReader', 'LLVMAsmParser', 'LLVMDemangle', 'LLVMGlobalISel', 'LLVMDebugInfoMSF', 'LLVMBinaryFormat', ]) elif llvm_version >= distutils.version.LooseVersion('4.0'): env.Prepend(LIBS = [ 'LLVMX86Disassembler', 'LLVMX86AsmParser', 'LLVMX86CodeGen', 'LLVMSelectionDAG', 'LLVMAsmPrinter', 'LLVMDebugInfoCodeView', 'LLVMCodeGen', 'LLVMScalarOpts', 'LLVMInstCombine', 'LLVMTransformUtils', 'LLVMBitWriter', 'LLVMX86Desc', 'LLVMMCDisassembler', 'LLVMX86Info', 'LLVMX86AsmPrinter', 'LLVMX86Utils', 'LLVMMCJIT', 'LLVMExecutionEngine', 'LLVMTarget', 'LLVMAnalysis', 'LLVMProfileData', 'LLVMRuntimeDyld', 'LLVMObject', 'LLVMMCParser', 'LLVMBitReader', 'LLVMMC', 'LLVMCore', 'LLVMSupport', 'LLVMIRReader', 'LLVMAsmParser', 'LLVMDemangle', 'LLVMGlobalISel', 'LLVMDebugInfoMSF', ]) else: env.Prepend(LIBS = [ 'LLVMX86Disassembler', 'LLVMX86AsmParser', 'LLVMX86CodeGen', 'LLVMSelectionDAG', 'LLVMAsmPrinter', 'LLVMDebugInfoCodeView', 'LLVMCodeGen', 'LLVMScalarOpts', 'LLVMInstCombine', 'LLVMInstrumentation', 'LLVMTransformUtils', 'LLVMBitWriter', 'LLVMX86Desc', 'LLVMMCDisassembler', 'LLVMX86Info', 'LLVMX86AsmPrinter', 'LLVMX86Utils', 'LLVMMCJIT', 'LLVMExecutionEngine', 'LLVMTarget', 'LLVMAnalysis', 'LLVMProfileData', 'LLVMRuntimeDyld', 'LLVMObject', 'LLVMMCParser', 'LLVMBitReader', 'LLVMMC', 'LLVMCore', 'LLVMSupport', 'LLVMIRReader', 'LLVMASMParser' ]) env.Append(LIBS = [ 'imagehlp', 'psapi', 'shell32', 'advapi32', 'ole32', 'uuid', ]) # Mingw-w64 zlib is required when building with LLVM support in MSYS2 environment if host_platform.system().lower().startswith('mingw'): env.Append(LIBS = [ 'z', ]) if env['msvc']: # Some of the LLVM C headers use the inline keyword without # defining it. env.Append(CPPDEFINES = [('inline', '__inline')]) # Match some of the warning options from llvm/cmake/modules/HandleLLVMOptions.cmake env.AppendUnique(CXXFLAGS = [ '/wd4355', # 'this' : used in base member initializer list '/wd4624', # 'derived class' : destructor could not be generated because a base class destructor is inaccessible ]) if env['build'] in ('debug', 'checked'): # LLVM libraries are static, build with /MT, and they # automatically link agains LIBCMT. When we're doing a # debug build we'll be linking against LIBCMTD, so disable # that. env.Append(LINKFLAGS = ['/nodefaultlib:LIBCMT']) else: llvm_config = os.environ.get('LLVM_CONFIG', 'llvm-config') if not env.Detect(llvm_config): print('scons: %s script not found' % llvm_config) return llvm_version = env.backtick('%s --version' % llvm_config).rstrip() llvm_version = distutils.version.LooseVersion(llvm_version) if llvm_version < distutils.version.LooseVersion(required_llvm_version): print('scons: LLVM version %s found, but %s is required' % (llvm_version, required_llvm_version)) return try: # Treat --cppflags specially to prevent NDEBUG from disabling # assertion failures in debug builds. cppflags = env.ParseFlags('!%s --cppflags' % llvm_config) try: cppflags['CPPDEFINES'].remove('NDEBUG') except ValueError: pass env.MergeFlags(cppflags) # Match llvm --fno-rtti flag cxxflags = env.backtick('%s --cxxflags' % llvm_config).split() if '-fno-rtti' in cxxflags: env.Append(CXXFLAGS = ['-fno-rtti']) if llvm_version < distutils.version.LooseVersion('9.0'): components = ['engine', 'mcjit', 'bitwriter', 'x86asmprinter', 'mcdisassembler', 'irreader'] else: components = ['engine', 'mcjit', 'bitwriter', 'mcdisassembler', 'irreader'] if llvm_version >= distutils.version.LooseVersion('8.0'): components.append('coroutines') env.ParseConfig('%s --libs ' % llvm_config + ' '.join(components)) env.ParseConfig('%s --ldflags' % llvm_config) env.ParseConfig('%s --system-libs' % llvm_config) env.Append(CXXFLAGS = ['-std=c++14']) except OSError: print('scons: llvm-config version %s failed' % llvm_version) return assert llvm_version is not None env['llvm'] = True print('scons: Found LLVM version %s' % llvm_version) env['LLVM_VERSION'] = llvm_version # Define LLVM_AVAILABLE macro to guard code blocks, and MESA_LLVM_VERSION_STRING env.Prepend(CPPDEFINES = [('LLVM_AVAILABLE', 1)]) env.Prepend(CPPDEFINES = [('MESA_LLVM_VERSION_STRING=\\"%s\\"' % llvm_version)]) def exists(env): return True # vim:set ts=4 sw=4 et: