"""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 sys import distutils.version import SCons.Errors import SCons.Util required_llvm_version = '3.3' 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.AppendUnique(CPPDEFINES = [ '__STDC_LIMIT_MACROS', '__STDC_CONSTANT_MACROS', 'HAVE_STDINT_H', ]) env.Prepend(LIBPATH = [os.path.join(llvm_dir, 'lib')]) # LIBS should match the output of `llvm-config --libs engine mcjit bitwriter x86asmprinter` if llvm_version >= distutils.version.LooseVersion('3.9'): 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' ]) elif llvm_version >= distutils.version.LooseVersion('3.7'): env.Prepend(LIBS = [ 'LLVMBitWriter', 'LLVMX86Disassembler', 'LLVMX86AsmParser', 'LLVMX86CodeGen', 'LLVMSelectionDAG', 'LLVMAsmPrinter', 'LLVMCodeGen', 'LLVMScalarOpts', 'LLVMProfileData', 'LLVMInstCombine', 'LLVMInstrumentation', 'LLVMTransformUtils', 'LLVMipa', 'LLVMAnalysis', 'LLVMX86Desc', 'LLVMMCDisassembler', 'LLVMX86Info', 'LLVMX86AsmPrinter', 'LLVMX86Utils', 'LLVMMCJIT', 'LLVMTarget', 'LLVMExecutionEngine', 'LLVMRuntimeDyld', 'LLVMObject', 'LLVMMCParser', 'LLVMBitReader', 'LLVMMC', 'LLVMCore', 'LLVMSupport' ]) elif llvm_version >= distutils.version.LooseVersion('3.6'): env.Prepend(LIBS = [ 'LLVMBitWriter', 'LLVMX86Disassembler', 'LLVMX86AsmParser', 'LLVMX86CodeGen', 'LLVMSelectionDAG', 'LLVMAsmPrinter', 'LLVMCodeGen', 'LLVMScalarOpts', 'LLVMProfileData', 'LLVMInstCombine', 'LLVMTransformUtils', 'LLVMipa', 'LLVMAnalysis', 'LLVMX86Desc', 'LLVMMCDisassembler', 'LLVMX86Info', 'LLVMX86AsmPrinter', 'LLVMX86Utils', 'LLVMMCJIT', 'LLVMTarget', 'LLVMExecutionEngine', 'LLVMRuntimeDyld', 'LLVMObject', 'LLVMMCParser', 'LLVMBitReader', 'LLVMMC', 'LLVMCore', 'LLVMSupport' ]) elif llvm_version >= distutils.version.LooseVersion('3.5'): env.Prepend(LIBS = [ 'LLVMMCDisassembler', 'LLVMBitWriter', 'LLVMMCJIT', 'LLVMRuntimeDyld', 'LLVMX86Disassembler', 'LLVMX86AsmParser', 'LLVMX86CodeGen', 'LLVMSelectionDAG', 'LLVMAsmPrinter', 'LLVMX86Desc', 'LLVMObject', 'LLVMMCParser', 'LLVMBitReader', 'LLVMX86Info', 'LLVMX86AsmPrinter', 'LLVMX86Utils', 'LLVMJIT', 'LLVMExecutionEngine', 'LLVMCodeGen', 'LLVMScalarOpts', 'LLVMInstCombine', 'LLVMTransformUtils', 'LLVMipa', 'LLVMAnalysis', 'LLVMTarget', 'LLVMMC', 'LLVMCore', 'LLVMSupport' ]) else: env.Prepend(LIBS = [ 'LLVMMCDisassembler', 'LLVMBitWriter', 'LLVMX86Disassembler', 'LLVMX86AsmParser', 'LLVMX86CodeGen', 'LLVMX86Desc', 'LLVMSelectionDAG', 'LLVMAsmPrinter', 'LLVMMCParser', 'LLVMX86AsmPrinter', 'LLVMX86Utils', 'LLVMX86Info', 'LLVMMCJIT', 'LLVMJIT', 'LLVMExecutionEngine', 'LLVMCodeGen', 'LLVMScalarOpts', 'LLVMInstCombine', 'LLVMTransformUtils', 'LLVMipa', 'LLVMAnalysis', 'LLVMTarget', 'LLVMMC', 'LLVMCore', 'LLVMSupport', 'LLVMRuntimeDyld', 'LLVMObject' ]) env.Append(LIBS = [ 'imagehlp', 'psapi', 'shell32', 'advapi32' ]) 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: if not env.Detect('llvm-config'): print 'scons: llvm-config script not found' return llvm_version = env.backtick('llvm-config --version').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('!llvm-config --cppflags') try: cppflags['CPPDEFINES'].remove('NDEBUG') except ValueError: pass env.MergeFlags(cppflags) # Match llvm --fno-rtti flag cxxflags = env.backtick('llvm-config --cxxflags').split() if '-fno-rtti' in cxxflags: env.Append(CXXFLAGS = ['-fno-rtti']) components = ['engine', 'mcjit', 'bitwriter', 'x86asmprinter', 'mcdisassembler', 'irreader'] env.ParseConfig('llvm-config --libs ' + ' '.join(components)) env.ParseConfig('llvm-config --ldflags') if llvm_version >= distutils.version.LooseVersion('3.5'): env.ParseConfig('llvm-config --system-libs') env.Append(CXXFLAGS = ['-std=c++11']) 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 HAVE_LLVM macro with the major/minor version number (e.g., 0x0206 for 2.6) llvm_version_major = int(llvm_version.version[0]) llvm_version_minor = int(llvm_version.version[1]) llvm_version_hex = '0x%02x%02x' % (llvm_version_major, llvm_version_minor) env.Prepend(CPPDEFINES = [('HAVE_LLVM', llvm_version_hex)]) def exists(env): return True # vim:set ts=4 sw=4 et: