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
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.
34 import distutils
.version
40 required_llvm_version
= '3.3'
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/llvm-config.h')
76 if not os
.path
.exists(llvm_config
):
77 print('scons: could not find %s' % llvm_config
)
79 llvm_version_major_re
= re
.compile(r
'^#define LLVM_VERSION_MAJOR ([0-9]+)')
80 llvm_version_minor_re
= re
.compile(r
'^#define LLVM_VERSION_MINOR ([0-9]+)')
82 llvm_version_major
= None
83 llvm_version_minor
= None
84 for line
in open(llvm_config
, 'rt'):
85 mo
= llvm_version_major_re
.match(line
)
87 llvm_version_major
= mo
.group(1)
88 mo
= llvm_version_minor_re
.match(line
)
90 llvm_version_minor
= mo
.group(1)
91 if llvm_version_major
is not None and llvm_version_minor
is not None:
92 llvm_version
= distutils
.version
.LooseVersion('%s.%s' % (llvm_version_major
, llvm_version_minor
))
94 if llvm_version
is None:
95 print('scons: could not determine the LLVM version from %s' % llvm_config
)
97 if llvm_version
< distutils
.version
.LooseVersion(required_llvm_version
):
98 print('scons: LLVM version %s found, but %s is required' % (llvm_version
, required_llvm_version
))
101 env
.Prepend(CPPPATH
= [os
.path
.join(llvm_dir
, 'include')])
102 env
.Prepend(LIBPATH
= [os
.path
.join(llvm_dir
, 'lib')])
103 # LIBS should match the output of `llvm-config --libs engine mcjit bitwriter x86asmprinter irreader`
104 if llvm_version
>= distutils
.version
.LooseVersion('5.0'):
106 'LLVMX86Disassembler', 'LLVMX86AsmParser',
107 'LLVMX86CodeGen', 'LLVMSelectionDAG', 'LLVMAsmPrinter',
108 'LLVMDebugInfoCodeView', 'LLVMCodeGen',
109 'LLVMScalarOpts', 'LLVMInstCombine',
110 'LLVMTransformUtils',
111 'LLVMBitWriter', 'LLVMX86Desc',
112 'LLVMMCDisassembler', 'LLVMX86Info',
113 'LLVMX86AsmPrinter', 'LLVMX86Utils',
114 'LLVMMCJIT', 'LLVMExecutionEngine', 'LLVMTarget',
115 'LLVMAnalysis', 'LLVMProfileData',
116 'LLVMRuntimeDyld', 'LLVMObject', 'LLVMMCParser',
117 'LLVMBitReader', 'LLVMMC', 'LLVMCore',
119 'LLVMIRReader', 'LLVMAsmParser',
120 'LLVMDemangle', 'LLVMGlobalISel', 'LLVMDebugInfoMSF',
123 if env
['platform'] == 'windows' and env
['crosscompile']:
124 # LLVM 5.0 requires MinGW w/ pthreads due to use of std::thread and friends.
126 env
['CXX'] = env
['CXX'] + '-posix'
127 elif llvm_version
>= distutils
.version
.LooseVersion('4.0'):
129 'LLVMX86Disassembler', 'LLVMX86AsmParser',
130 'LLVMX86CodeGen', 'LLVMSelectionDAG', 'LLVMAsmPrinter',
131 'LLVMDebugInfoCodeView', 'LLVMCodeGen',
132 'LLVMScalarOpts', 'LLVMInstCombine',
133 'LLVMTransformUtils',
134 'LLVMBitWriter', 'LLVMX86Desc',
135 'LLVMMCDisassembler', 'LLVMX86Info',
136 'LLVMX86AsmPrinter', 'LLVMX86Utils',
137 'LLVMMCJIT', 'LLVMExecutionEngine', 'LLVMTarget',
138 'LLVMAnalysis', 'LLVMProfileData',
139 'LLVMRuntimeDyld', 'LLVMObject', 'LLVMMCParser',
140 'LLVMBitReader', 'LLVMMC', 'LLVMCore',
142 'LLVMIRReader', 'LLVMAsmParser',
143 'LLVMDemangle', 'LLVMGlobalISel', 'LLVMDebugInfoMSF',
145 elif llvm_version
>= distutils
.version
.LooseVersion('3.9'):
147 'LLVMX86Disassembler', 'LLVMX86AsmParser',
148 'LLVMX86CodeGen', 'LLVMSelectionDAG', 'LLVMAsmPrinter',
149 'LLVMDebugInfoCodeView', 'LLVMCodeGen',
150 'LLVMScalarOpts', 'LLVMInstCombine',
151 'LLVMInstrumentation', 'LLVMTransformUtils',
152 'LLVMBitWriter', 'LLVMX86Desc',
153 'LLVMMCDisassembler', 'LLVMX86Info',
154 'LLVMX86AsmPrinter', 'LLVMX86Utils',
155 'LLVMMCJIT', 'LLVMExecutionEngine', 'LLVMTarget',
156 'LLVMAnalysis', 'LLVMProfileData',
157 'LLVMRuntimeDyld', 'LLVMObject', 'LLVMMCParser',
158 'LLVMBitReader', 'LLVMMC', 'LLVMCore',
160 'LLVMIRReader', 'LLVMASMParser'
162 elif llvm_version
>= distutils
.version
.LooseVersion('3.7'):
164 'LLVMBitWriter', 'LLVMX86Disassembler', 'LLVMX86AsmParser',
165 'LLVMX86CodeGen', 'LLVMSelectionDAG', 'LLVMAsmPrinter',
166 'LLVMCodeGen', 'LLVMScalarOpts', 'LLVMProfileData',
167 'LLVMInstCombine', 'LLVMInstrumentation', 'LLVMTransformUtils', 'LLVMipa',
168 'LLVMAnalysis', 'LLVMX86Desc', 'LLVMMCDisassembler',
169 'LLVMX86Info', 'LLVMX86AsmPrinter', 'LLVMX86Utils',
170 'LLVMMCJIT', 'LLVMTarget', 'LLVMExecutionEngine',
171 'LLVMRuntimeDyld', 'LLVMObject', 'LLVMMCParser',
172 'LLVMBitReader', 'LLVMMC', 'LLVMCore', 'LLVMSupport'
174 elif llvm_version
>= distutils
.version
.LooseVersion('3.6'):
176 'LLVMBitWriter', 'LLVMX86Disassembler', 'LLVMX86AsmParser',
177 'LLVMX86CodeGen', 'LLVMSelectionDAG', 'LLVMAsmPrinter',
178 'LLVMCodeGen', 'LLVMScalarOpts', 'LLVMProfileData',
179 'LLVMInstCombine', 'LLVMTransformUtils', 'LLVMipa',
180 'LLVMAnalysis', 'LLVMX86Desc', 'LLVMMCDisassembler',
181 'LLVMX86Info', 'LLVMX86AsmPrinter', 'LLVMX86Utils',
182 'LLVMMCJIT', 'LLVMTarget', 'LLVMExecutionEngine',
183 'LLVMRuntimeDyld', 'LLVMObject', 'LLVMMCParser',
184 'LLVMBitReader', 'LLVMMC', 'LLVMCore', 'LLVMSupport'
186 elif llvm_version
>= distutils
.version
.LooseVersion('3.5'):
188 'LLVMMCDisassembler',
189 'LLVMBitWriter', 'LLVMMCJIT', 'LLVMRuntimeDyld',
190 'LLVMX86Disassembler', 'LLVMX86AsmParser', 'LLVMX86CodeGen',
191 'LLVMSelectionDAG', 'LLVMAsmPrinter', 'LLVMX86Desc',
192 'LLVMObject', 'LLVMMCParser', 'LLVMBitReader', 'LLVMX86Info',
193 'LLVMX86AsmPrinter', 'LLVMX86Utils', 'LLVMJIT',
194 'LLVMExecutionEngine', 'LLVMCodeGen', 'LLVMScalarOpts',
195 'LLVMInstCombine', 'LLVMTransformUtils', 'LLVMipa',
196 'LLVMAnalysis', 'LLVMTarget', 'LLVMMC', 'LLVMCore',
201 'LLVMMCDisassembler',
202 'LLVMBitWriter', 'LLVMX86Disassembler', 'LLVMX86AsmParser',
203 'LLVMX86CodeGen', 'LLVMX86Desc', 'LLVMSelectionDAG',
204 'LLVMAsmPrinter', 'LLVMMCParser', 'LLVMX86AsmPrinter',
205 'LLVMX86Utils', 'LLVMX86Info', 'LLVMMCJIT', 'LLVMJIT',
206 'LLVMExecutionEngine', 'LLVMCodeGen', 'LLVMScalarOpts',
207 'LLVMInstCombine', 'LLVMTransformUtils', 'LLVMipa',
208 'LLVMAnalysis', 'LLVMTarget', 'LLVMMC', 'LLVMCore',
209 'LLVMSupport', 'LLVMRuntimeDyld', 'LLVMObject'
221 # Some of the LLVM C headers use the inline keyword without
223 env
.Append(CPPDEFINES
= [('inline', '__inline')])
224 # Match some of the warning options from llvm/cmake/modules/HandleLLVMOptions.cmake
225 env
.AppendUnique(CXXFLAGS
= [
226 '/wd4355', # 'this' : used in base member initializer list
227 '/wd4624', # 'derived class' : destructor could not be generated because a base class destructor is inaccessible
229 if env
['build'] in ('debug', 'checked'):
230 # LLVM libraries are static, build with /MT, and they
231 # automatically link agains LIBCMT. When we're doing a
232 # debug build we'll be linking against LIBCMTD, so disable
234 env
.Append(LINKFLAGS
= ['/nodefaultlib:LIBCMT'])
236 llvm_config
= os
.environ
.get('LLVM_CONFIG', 'llvm-config')
237 if not env
.Detect(llvm_config
):
238 print('scons: %s script not found' % llvm_config
)
241 llvm_version
= env
.backtick('%s --version' % llvm_config
).rstrip()
242 llvm_version
= distutils
.version
.LooseVersion(llvm_version
)
244 if llvm_version
< distutils
.version
.LooseVersion(required_llvm_version
):
245 print('scons: LLVM version %s found, but %s is required' % (llvm_version
, required_llvm_version
))
249 # Treat --cppflags specially to prevent NDEBUG from disabling
250 # assertion failures in debug builds.
251 cppflags
= env
.ParseFlags('!%s --cppflags' % llvm_config
)
253 cppflags
['CPPDEFINES'].remove('NDEBUG')
256 env
.MergeFlags(cppflags
)
258 # Match llvm --fno-rtti flag
259 cxxflags
= env
.backtick('%s --cxxflags' % llvm_config
).split()
260 if '-fno-rtti' in cxxflags
:
261 env
.Append(CXXFLAGS
= ['-fno-rtti'])
263 components
= ['engine', 'mcjit', 'bitwriter', 'x86asmprinter', 'mcdisassembler', 'irreader']
265 env
.ParseConfig('%s --libs ' % llvm_config
+ ' '.join(components
))
266 env
.ParseConfig('%s --ldflags' % llvm_config
)
267 if llvm_version
>= distutils
.version
.LooseVersion('3.5'):
268 env
.ParseConfig('%s --system-libs' % llvm_config
)
269 env
.Append(CXXFLAGS
= ['-std=c++11'])
271 print('scons: llvm-config version %s failed' % llvm_version
)
274 assert llvm_version
is not None
277 print('scons: Found LLVM version %s' % llvm_version
)
278 env
['LLVM_VERSION'] = llvm_version
280 # Define HAVE_LLVM macro with the major/minor version number (e.g., 0x0206 for 2.6)
281 llvm_version_major
= int(llvm_version
.version
[0])
282 llvm_version_minor
= int(llvm_version
.version
[1])
283 llvm_version_hex
= '0x%02x%02x' % (llvm_version_major
, llvm_version_minor
)
284 env
.Prepend(CPPDEFINES
= [('HAVE_LLVM', llvm_version_hex
)])
289 # vim:set ts=4 sw=4 et: