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/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')])
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'
120 # Some of the LLVM C headers use the inline keyword without
122 env
.Append(CPPDEFINES
= [('inline', '__inline')])
123 if env
['build'] in ('debug', 'checked'):
124 # LLVM libraries are static, build with /MT, and they
125 # automatically link agains LIBCMT. When we're doing a
126 # debug build we'll be linking against LIBCMTD, so disable
128 env
.Append(LINKFLAGS
= ['/nodefaultlib:LIBCMT'])
130 if not env
.Detect('llvm-config'):
131 print 'scons: llvm-config script not found'
134 llvm_version
= env
.backtick('llvm-config --version').rstrip()
135 llvm_version
= distutils
.version
.LooseVersion(llvm_version
)
137 if llvm_version
< distutils
.version
.LooseVersion(required_llvm_version
):
138 print 'scons: LLVM version %s found, but %s is required' % (llvm_version
, required_llvm_version
)
142 # Treat --cppflags specially to prevent NDEBUG from disabling
143 # assertion failures in debug builds.
144 cppflags
= env
.ParseFlags('!llvm-config --cppflags')
146 cppflags
['CPPDEFINES'].remove('NDEBUG')
149 env
.MergeFlags(cppflags
)
151 # Match llvm --fno-rtti flag
152 cxxflags
= env
.backtick('llvm-config --cxxflags').split()
153 if '-fno-rtti' in cxxflags
:
154 env
.Append(CXXFLAGS
= ['-fno-rtti'])
156 components
= ['engine', 'mcjit', 'bitwriter', 'x86asmprinter']
158 env
.ParseConfig('llvm-config --libs ' + ' '.join(components
))
159 env
.ParseConfig('llvm-config --ldflags')
160 if llvm_version
>= distutils
.version
.LooseVersion('3.5'):
161 env
.ParseConfig('llvm-config --system-libs')
162 env
.Append(CXXFLAGS
= ['-std=c++11'])
164 print 'scons: llvm-config version %s failed' % llvm_version
167 assert llvm_version
is not None
170 print 'scons: Found LLVM version %s' % llvm_version
171 env
['LLVM_VERSION'] = llvm_version
173 # Define HAVE_LLVM macro with the major/minor version number (e.g., 0x0206 for 2.6)
174 llvm_version_major
= int(llvm_version
.version
[0])
175 llvm_version_minor
= int(llvm_version
.version
[1])
176 llvm_version_hex
= '0x%02x%02x' % (llvm_version_major
, llvm_version_minor
)
177 env
.Prepend(CPPDEFINES
= [('HAVE_LLVM', llvm_version_hex
)])
182 # vim:set ts=4 sw=4 et: