1"""llvm 2 3Tool-specific initialization for LLVM 4 5""" 6 7# 8# Copyright (c) 2009 VMware, Inc. 9# 10# Permission is hereby granted, free of charge, to any person obtaining 11# a copy of this software and associated documentation files (the 12# "Software"), to deal in the Software without restriction, including 13# without limitation the rights to use, copy, modify, merge, publish, 14# distribute, sublicense, and/or sell copies of the Software, and to 15# permit persons to whom the Software is furnished to do so, subject to 16# the following conditions: 17# 18# The above copyright notice and this permission notice shall be included 19# in all copies or substantial portions of the Software. 20# 21# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY 22# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE 23# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 24# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE 25# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 26# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 27# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 28# 29 30import os 31import os.path 32import re 33import sys 34import distutils.version 35 36import SCons.Errors 37import SCons.Util 38 39 40def generate(env): 41 env['llvm'] = False 42 43 try: 44 llvm_dir = os.environ['LLVM'] 45 except KeyError: 46 # Do nothing -- use the system headers/libs 47 llvm_dir = None 48 else: 49 if not os.path.isdir(llvm_dir): 50 raise SCons.Errors.InternalError, "Specified LLVM directory not found" 51 52 if env['debug']: 53 llvm_subdir = 'Debug' 54 else: 55 llvm_subdir = 'Release' 56 57 llvm_bin_dir = os.path.join(llvm_dir, llvm_subdir, 'bin') 58 if not os.path.isdir(llvm_bin_dir): 59 llvm_bin_dir = os.path.join(llvm_dir, 'bin') 60 if not os.path.isdir(llvm_bin_dir): 61 raise SCons.Errors.InternalError, "LLVM binary directory not found" 62 63 env.PrependENVPath('PATH', llvm_bin_dir) 64 65 if env['platform'] == 'windows': 66 # XXX: There is no llvm-config on Windows, so assume a standard layout 67 if llvm_dir is None: 68 print 'scons: LLVM environment variable must be specified when building for windows' 69 return 70 71 # Try to determine the LLVM version from llvm/Config/config.h 72 llvm_config = os.path.join(llvm_dir, 'include/llvm/Config/config.h') 73 if not os.path.exists(llvm_config): 74 print 'scons: could not find %s' % llvm_config 75 return 76 llvm_version_re = re.compile(r'^#define PACKAGE_VERSION "([^"]*)"') 77 llvm_version = None 78 for line in open(llvm_config, 'rt'): 79 mo = llvm_version_re.match(line) 80 if mo: 81 llvm_version = mo.group(1) 82 llvm_version = distutils.version.LooseVersion(llvm_version) 83 break 84 if llvm_version is None: 85 print 'scons: could not determine the LLVM version from %s' % llvm_config 86 return 87 88 env.Prepend(CPPPATH = [os.path.join(llvm_dir, 'include')]) 89 env.AppendUnique(CPPDEFINES = [ 90 '__STDC_LIMIT_MACROS', 91 '__STDC_CONSTANT_MACROS', 92 'HAVE_STDINT_H', 93 ]) 94 env.Prepend(LIBPATH = [os.path.join(llvm_dir, 'lib')]) 95 if llvm_version >= distutils.version.LooseVersion('3.0'): 96 # 3.0 97 env.Prepend(LIBS = [ 98 'LLVMBitWriter', 'LLVMX86Disassembler', 'LLVMX86AsmParser', 99 'LLVMX86CodeGen', 'LLVMX86Desc', 'LLVMSelectionDAG', 100 'LLVMAsmPrinter', 'LLVMMCParser', 'LLVMX86AsmPrinter', 101 'LLVMX86Utils', 'LLVMX86Info', 'LLVMJIT', 102 'LLVMExecutionEngine', 'LLVMCodeGen', 'LLVMScalarOpts', 103 'LLVMInstCombine', 'LLVMTransformUtils', 'LLVMipa', 104 'LLVMAnalysis', 'LLVMTarget', 'LLVMMC', 'LLVMCore', 105 'LLVMSupport' 106 ]) 107 elif llvm_version >= distutils.version.LooseVersion('2.9'): 108 # 2.9 109 env.Prepend(LIBS = [ 110 'LLVMObject', 'LLVMMCJIT', 'LLVMMCDisassembler', 111 'LLVMLinker', 'LLVMipo', 'LLVMInterpreter', 112 'LLVMInstrumentation', 'LLVMJIT', 'LLVMExecutionEngine', 113 'LLVMBitWriter', 'LLVMX86Disassembler', 'LLVMX86AsmParser', 114 'LLVMMCParser', 'LLVMX86AsmPrinter', 'LLVMX86CodeGen', 115 'LLVMSelectionDAG', 'LLVMX86Utils', 'LLVMX86Info', 'LLVMAsmPrinter', 116 'LLVMCodeGen', 'LLVMScalarOpts', 'LLVMInstCombine', 117 'LLVMTransformUtils', 'LLVMipa', 'LLVMAsmParser', 118 'LLVMArchive', 'LLVMBitReader', 'LLVMAnalysis', 'LLVMTarget', 119 'LLVMCore', 'LLVMMC', 'LLVMSupport', 120 ]) 121 elif llvm_version >= distutils.version.LooseVersion('2.7'): 122 # 2.7 123 env.Prepend(LIBS = [ 124 'LLVMLinker', 'LLVMipo', 'LLVMInterpreter', 125 'LLVMInstrumentation', 'LLVMJIT', 'LLVMExecutionEngine', 126 'LLVMBitWriter', 'LLVMX86Disassembler', 'LLVMX86AsmParser', 127 'LLVMMCParser', 'LLVMX86AsmPrinter', 'LLVMX86CodeGen', 128 'LLVMSelectionDAG', 'LLVMX86Info', 'LLVMAsmPrinter', 129 'LLVMCodeGen', 'LLVMScalarOpts', 'LLVMInstCombine', 130 'LLVMTransformUtils', 'LLVMipa', 'LLVMAsmParser', 131 'LLVMArchive', 'LLVMBitReader', 'LLVMAnalysis', 'LLVMTarget', 132 'LLVMMC', 'LLVMCore', 'LLVMSupport', 'LLVMSystem', 133 ]) 134 else: 135 # 2.6 136 env.Prepend(LIBS = [ 137 'LLVMX86AsmParser', 'LLVMX86AsmPrinter', 'LLVMX86CodeGen', 138 'LLVMX86Info', 'LLVMLinker', 'LLVMipo', 'LLVMInterpreter', 139 'LLVMInstrumentation', 'LLVMJIT', 'LLVMExecutionEngine', 140 'LLVMDebugger', 'LLVMBitWriter', 'LLVMAsmParser', 141 'LLVMArchive', 'LLVMBitReader', 'LLVMSelectionDAG', 142 'LLVMAsmPrinter', 'LLVMCodeGen', 'LLVMScalarOpts', 143 'LLVMTransformUtils', 'LLVMipa', 'LLVMAnalysis', 144 'LLVMTarget', 'LLVMMC', 'LLVMCore', 'LLVMSupport', 145 'LLVMSystem', 146 ]) 147 env.Append(LIBS = [ 148 'imagehlp', 149 'psapi', 150 'shell32', 151 'advapi32' 152 ]) 153 if env['msvc']: 154 # Some of the LLVM C headers use the inline keyword without 155 # defining it. 156 env.Append(CPPDEFINES = [('inline', '__inline')]) 157 if env['build'] in ('debug', 'checked'): 158 # LLVM libraries are static, build with /MT, and they 159 # automatically link agains LIBCMT. When we're doing a 160 # debug build we'll be linking against LIBCMTD, so disable 161 # that. 162 env.Append(LINKFLAGS = ['/nodefaultlib:LIBCMT']) 163 else: 164 if not env.Detect('llvm-config'): 165 print 'scons: llvm-config script not found' % llvm_version 166 return 167 168 llvm_version = env.backtick('llvm-config --version').rstrip() 169 llvm_version = distutils.version.LooseVersion(llvm_version) 170 171 try: 172 # Treat --cppflags specially to prevent NDEBUG from disabling 173 # assertion failures in debug builds. 174 cppflags = env.ParseFlags('!llvm-config --cppflags') 175 try: 176 cppflags['CPPDEFINES'].remove('NDEBUG') 177 except ValueError: 178 pass 179 env.MergeFlags(cppflags) 180 181 components = ['engine', 'bitwriter', 'x86asmprinter'] 182 183 if llvm_version >= distutils.version.LooseVersion('3.1'): 184 components.append('mcjit') 185 186 env.ParseConfig('llvm-config --libs ' + ' '.join(components)) 187 env.ParseConfig('llvm-config --ldflags') 188 except OSError: 189 print 'scons: llvm-config version %s failed' % llvm_version 190 return 191 192 assert llvm_version is not None 193 env['llvm'] = True 194 195 print 'scons: Found LLVM version %s' % llvm_version 196 env['LLVM_VERSION'] = llvm_version 197 198 # Define HAVE_LLVM macro with the major/minor version number (e.g., 0x0206 for 2.6) 199 llvm_version_major = int(llvm_version.version[0]) 200 llvm_version_minor = int(llvm_version.version[1]) 201 llvm_version_hex = '0x%02x%02x' % (llvm_version_major, llvm_version_minor) 202 env.Prepend(CPPDEFINES = [('HAVE_LLVM', llvm_version_hex)]) 203 204def exists(env): 205 return True 206 207# vim:set ts=4 sw=4 et: 208