3 Tool-specific initialization for LLVM
8 # Copyright (c) 2009 VMware, Inc.
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:
18 # The above copyright notice and this permission notice shall be included
19 # in all copies or substantial portions of the Software.
21 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
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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
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27 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
34 import distutils
.version
40 required_llvm_version
= '3.1'
47 llvm_dir
= os
.environ
['LLVM']
49 # Do nothing -- use the system headers/libs
52 if not os
.path
.isdir(llvm_dir
):
53 raise SCons
.Errors
.InternalError
, "Specified LLVM directory not found"
58 llvm_subdir
= 'Release'
60 llvm_bin_dir
= os
.path
.join(llvm_dir
, llvm_subdir
, 'bin')
61 if not os
.path
.isdir(llvm_bin_dir
):
62 llvm_bin_dir
= os
.path
.join(llvm_dir
, 'bin')
63 if not os
.path
.isdir(llvm_bin_dir
):
64 raise SCons
.Errors
.InternalError
, "LLVM binary directory not found"
66 env
.PrependENVPath('PATH', llvm_bin_dir
)
68 if env
['platform'] == 'windows':
69 # XXX: There is no llvm-config on Windows, so assume a standard layout
71 print 'scons: LLVM environment variable must be specified when building for windows'
74 # Try to determine the LLVM version from llvm/Config/config.h
75 llvm_config
= os
.path
.join(llvm_dir
, 'include/llvm/Config/config.h')
76 if not os
.path
.exists(llvm_config
):
77 print 'scons: could not find %s' % llvm_config
79 llvm_version_re
= re
.compile(r
'^#define PACKAGE_VERSION "([^"]*)"')
81 for line
in open(llvm_config
, 'rt'):
82 mo
= llvm_version_re
.match(line
)
84 llvm_version
= mo
.group(1)
85 llvm_version
= distutils
.version
.LooseVersion(llvm_version
)
87 if llvm_version
is None:
88 print 'scons: could not determine the LLVM version from %s' % llvm_config
90 if llvm_version
< distutils
.version
.LooseVersion(required_llvm_version
):
91 print 'scons: LLVM version %s found, but %s is required' % (llvm_version
, required_llvm_version
)
94 env
.Prepend(CPPPATH
= [os
.path
.join(llvm_dir
, 'include')])
95 env
.AppendUnique(CPPDEFINES
= [
96 '__STDC_LIMIT_MACROS',
97 '__STDC_CONSTANT_MACROS',
100 env
.Prepend(LIBPATH
= [os
.path
.join(llvm_dir
, 'lib')])
101 if llvm_version
>= distutils
.version
.LooseVersion('3.2'):
104 'LLVMBitWriter', 'LLVMX86Disassembler', 'LLVMX86AsmParser',
105 'LLVMX86CodeGen', 'LLVMX86Desc', 'LLVMSelectionDAG',
106 'LLVMAsmPrinter', 'LLVMMCParser', 'LLVMX86AsmPrinter',
107 'LLVMX86Utils', 'LLVMX86Info', 'LLVMMCJIT', 'LLVMJIT',
108 'LLVMExecutionEngine', 'LLVMCodeGen', 'LLVMScalarOpts',
109 'LLVMInstCombine', 'LLVMTransformUtils', 'LLVMipa',
110 'LLVMAnalysis', 'LLVMTarget', 'LLVMMC', 'LLVMCore',
111 'LLVMSupport', 'LLVMRuntimeDyld', 'LLVMObject'
116 'LLVMBitWriter', 'LLVMX86Disassembler', 'LLVMX86AsmParser',
117 'LLVMX86CodeGen', 'LLVMX86Desc', 'LLVMSelectionDAG',
118 'LLVMAsmPrinter', 'LLVMMCParser', 'LLVMX86AsmPrinter',
119 'LLVMX86Utils', 'LLVMX86Info', 'LLVMMCJIT', 'LLVMJIT',
120 'LLVMExecutionEngine', 'LLVMCodeGen', 'LLVMScalarOpts',
121 'LLVMInstCombine', 'LLVMTransformUtils', 'LLVMipa',
122 'LLVMAnalysis', 'LLVMTarget', 'LLVMMC', 'LLVMCore',
132 # Some of the LLVM C headers use the inline keyword without
134 env
.Append(CPPDEFINES
= [('inline', '__inline')])
135 if env
['build'] in ('debug', 'checked'):
136 # LLVM libraries are static, build with /MT, and they
137 # automatically link agains LIBCMT. When we're doing a
138 # debug build we'll be linking against LIBCMTD, so disable
140 env
.Append(LINKFLAGS
= ['/nodefaultlib:LIBCMT'])
142 if not env
.Detect('llvm-config'):
143 print 'scons: llvm-config script not found'
146 llvm_version
= env
.backtick('llvm-config --version').rstrip()
147 llvm_version
= distutils
.version
.LooseVersion(llvm_version
)
149 if llvm_version
< distutils
.version
.LooseVersion(required_llvm_version
):
150 print 'scons: LLVM version %s found, but %s is required' % (llvm_version
, required_llvm_version
)
154 # Treat --cppflags specially to prevent NDEBUG from disabling
155 # assertion failures in debug builds.
156 cppflags
= env
.ParseFlags('!llvm-config --cppflags')
158 cppflags
['CPPDEFINES'].remove('NDEBUG')
161 env
.MergeFlags(cppflags
)
163 # Match llvm --fno-rtti flag
164 cxxflags
= env
.backtick('llvm-config --cxxflags').split()
165 if '-fno-rtti' in cxxflags
:
166 env
.Append(CXXFLAGS
= ['-fno-rtti'])
168 components
= ['engine', 'mcjit', 'bitwriter', 'x86asmprinter']
170 env
.ParseConfig('llvm-config --libs ' + ' '.join(components
))
171 env
.ParseConfig('llvm-config --ldflags')
172 if llvm_version
>= distutils
.version
.LooseVersion('3.5'):
173 env
.ParseConfig('llvm-config --system-libs')
174 env
.Append(CXXFLAGS
= ['-std=c++11'])
176 print 'scons: llvm-config version %s failed' % llvm_version
179 assert llvm_version
is not None
182 print 'scons: Found LLVM version %s' % llvm_version
183 env
['LLVM_VERSION'] = llvm_version
185 # Define HAVE_LLVM macro with the major/minor version number (e.g., 0x0206 for 2.6)
186 llvm_version_major
= int(llvm_version
.version
[0])
187 llvm_version_minor
= int(llvm_version
.version
[1])
188 llvm_version_hex
= '0x%02x%02x' % (llvm_version_major
, llvm_version_minor
)
189 env
.Prepend(CPPDEFINES
= [('HAVE_LLVM', llvm_version_hex
)])
194 # vim:set ts=4 sw=4 et: