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
.AppendUnique(CPPDEFINES
= [
105 env
.Prepend(LIBPATH
= [os
.path
.join(llvm_dir
, 'lib')])
106 # LIBS should match the output of `llvm-config --libs engine mcjit bitwriter x86asmprinter`
107 if llvm_version
>= distutils
.version
.LooseVersion('3.9'):
109 'LLVMX86Disassembler', 'LLVMX86AsmParser',
110 'LLVMX86CodeGen', 'LLVMSelectionDAG', 'LLVMAsmPrinter',
111 'LLVMDebugInfoCodeView', 'LLVMCodeGen',
112 'LLVMScalarOpts', 'LLVMInstCombine',
113 'LLVMInstrumentation', 'LLVMTransformUtils',
114 'LLVMBitWriter', 'LLVMX86Desc',
115 'LLVMMCDisassembler', 'LLVMX86Info',
116 'LLVMX86AsmPrinter', 'LLVMX86Utils',
117 'LLVMMCJIT', 'LLVMExecutionEngine', 'LLVMTarget',
118 'LLVMAnalysis', 'LLVMProfileData',
119 'LLVMRuntimeDyld', 'LLVMObject', 'LLVMMCParser',
120 'LLVMBitReader', 'LLVMMC', 'LLVMCore',
122 'LLVMIRReader', 'LLVMASMParser'
124 elif llvm_version
>= distutils
.version
.LooseVersion('3.7'):
126 'LLVMBitWriter', 'LLVMX86Disassembler', 'LLVMX86AsmParser',
127 'LLVMX86CodeGen', 'LLVMSelectionDAG', 'LLVMAsmPrinter',
128 'LLVMCodeGen', 'LLVMScalarOpts', 'LLVMProfileData',
129 'LLVMInstCombine', 'LLVMInstrumentation', 'LLVMTransformUtils', 'LLVMipa',
130 'LLVMAnalysis', 'LLVMX86Desc', 'LLVMMCDisassembler',
131 'LLVMX86Info', 'LLVMX86AsmPrinter', 'LLVMX86Utils',
132 'LLVMMCJIT', 'LLVMTarget', 'LLVMExecutionEngine',
133 'LLVMRuntimeDyld', 'LLVMObject', 'LLVMMCParser',
134 'LLVMBitReader', 'LLVMMC', 'LLVMCore', 'LLVMSupport'
136 elif llvm_version
>= distutils
.version
.LooseVersion('3.6'):
138 'LLVMBitWriter', 'LLVMX86Disassembler', 'LLVMX86AsmParser',
139 'LLVMX86CodeGen', 'LLVMSelectionDAG', 'LLVMAsmPrinter',
140 'LLVMCodeGen', 'LLVMScalarOpts', 'LLVMProfileData',
141 'LLVMInstCombine', 'LLVMTransformUtils', 'LLVMipa',
142 'LLVMAnalysis', 'LLVMX86Desc', 'LLVMMCDisassembler',
143 'LLVMX86Info', 'LLVMX86AsmPrinter', 'LLVMX86Utils',
144 'LLVMMCJIT', 'LLVMTarget', 'LLVMExecutionEngine',
145 'LLVMRuntimeDyld', 'LLVMObject', 'LLVMMCParser',
146 'LLVMBitReader', 'LLVMMC', 'LLVMCore', 'LLVMSupport'
148 elif llvm_version
>= distutils
.version
.LooseVersion('3.5'):
150 'LLVMMCDisassembler',
151 'LLVMBitWriter', 'LLVMMCJIT', 'LLVMRuntimeDyld',
152 'LLVMX86Disassembler', 'LLVMX86AsmParser', 'LLVMX86CodeGen',
153 'LLVMSelectionDAG', 'LLVMAsmPrinter', 'LLVMX86Desc',
154 'LLVMObject', 'LLVMMCParser', 'LLVMBitReader', 'LLVMX86Info',
155 'LLVMX86AsmPrinter', 'LLVMX86Utils', 'LLVMJIT',
156 'LLVMExecutionEngine', 'LLVMCodeGen', 'LLVMScalarOpts',
157 'LLVMInstCombine', 'LLVMTransformUtils', 'LLVMipa',
158 'LLVMAnalysis', 'LLVMTarget', 'LLVMMC', 'LLVMCore',
163 'LLVMMCDisassembler',
164 'LLVMBitWriter', 'LLVMX86Disassembler', 'LLVMX86AsmParser',
165 'LLVMX86CodeGen', 'LLVMX86Desc', 'LLVMSelectionDAG',
166 'LLVMAsmPrinter', 'LLVMMCParser', 'LLVMX86AsmPrinter',
167 'LLVMX86Utils', 'LLVMX86Info', 'LLVMMCJIT', 'LLVMJIT',
168 'LLVMExecutionEngine', 'LLVMCodeGen', 'LLVMScalarOpts',
169 'LLVMInstCombine', 'LLVMTransformUtils', 'LLVMipa',
170 'LLVMAnalysis', 'LLVMTarget', 'LLVMMC', 'LLVMCore',
171 'LLVMSupport', 'LLVMRuntimeDyld', 'LLVMObject'
180 # Some of the LLVM C headers use the inline keyword without
182 env
.Append(CPPDEFINES
= [('inline', '__inline')])
183 # Match some of the warning options from llvm/cmake/modules/HandleLLVMOptions.cmake
184 env
.AppendUnique(CXXFLAGS
= [
185 '/wd4355', # 'this' : used in base member initializer list
186 '/wd4624', # 'derived class' : destructor could not be generated because a base class destructor is inaccessible
188 if env
['build'] in ('debug', 'checked'):
189 # LLVM libraries are static, build with /MT, and they
190 # automatically link agains LIBCMT. When we're doing a
191 # debug build we'll be linking against LIBCMTD, so disable
193 env
.Append(LINKFLAGS
= ['/nodefaultlib:LIBCMT'])
195 llvm_config
= os
.environ
.get('LLVM_CONFIG', 'llvm-config')
196 if not env
.Detect(llvm_config
):
197 print 'scons: %s script not found' % llvm_config
200 llvm_version
= env
.backtick('%s --version' % llvm_config
).rstrip()
201 llvm_version
= distutils
.version
.LooseVersion(llvm_version
)
203 if llvm_version
< distutils
.version
.LooseVersion(required_llvm_version
):
204 print 'scons: LLVM version %s found, but %s is required' % (llvm_version
, required_llvm_version
)
208 # Treat --cppflags specially to prevent NDEBUG from disabling
209 # assertion failures in debug builds.
210 cppflags
= env
.ParseFlags('!%s --cppflags' % llvm_config
)
212 cppflags
['CPPDEFINES'].remove('NDEBUG')
215 env
.MergeFlags(cppflags
)
217 # Match llvm --fno-rtti flag
218 cxxflags
= env
.backtick('%s --cxxflags' % llvm_config
).split()
219 if '-fno-rtti' in cxxflags
:
220 env
.Append(CXXFLAGS
= ['-fno-rtti'])
222 components
= ['engine', 'mcjit', 'bitwriter', 'x86asmprinter', 'mcdisassembler', 'irreader']
224 env
.ParseConfig('%s --libs ' % llvm_config
+ ' '.join(components
))
225 env
.ParseConfig('%s --ldflags' % llvm_config
)
226 if llvm_version
>= distutils
.version
.LooseVersion('3.5'):
227 env
.ParseConfig('%s --system-libs' % llvm_config
)
228 env
.Append(CXXFLAGS
= ['-std=c++11'])
230 print 'scons: llvm-config version %s failed' % llvm_version
233 assert llvm_version
is not None
236 print 'scons: Found LLVM version %s' % llvm_version
237 env
['LLVM_VERSION'] = llvm_version
239 # Define HAVE_LLVM macro with the major/minor version number (e.g., 0x0206 for 2.6)
240 llvm_version_major
= int(llvm_version
.version
[0])
241 llvm_version_minor
= int(llvm_version
.version
[1])
242 llvm_version_hex
= '0x%02x%02x' % (llvm_version_major
, llvm_version_minor
)
243 env
.Prepend(CPPDEFINES
= [('HAVE_LLVM', llvm_version_hex
)])
248 # vim:set ts=4 sw=4 et: