3 Tool-specific initialization for LLVM
8 # Copyright (c) 2009 VMware, Inc.
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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
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34 import distutils.version
44 llvm_dir = os.environ['LLVM']
46 # Do nothing -- use the system headers/libs
49 if not os.path.isdir(llvm_dir):
50 raise SCons.Errors.InternalError, "Specified LLVM directory not found"
55 llvm_subdir = 'Release'
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"
63 env.PrependENVPath('PATH', llvm_bin_dir)
65 if env['platform'] == 'windows':
66 # XXX: There is no llvm-config on Windows, so assume a standard layout
68 print 'scons: LLVM environment variable must be specified when building for windows'
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
76 llvm_version_re = re.compile(r'^#define PACKAGE_VERSION "([^"]*)"')
78 for line in open(llvm_config, 'rt'):
79 mo = llvm_version_re.match(line)
81 llvm_version = mo.group(1)
82 llvm_version = distutils.version.LooseVersion(llvm_version)
84 if llvm_version is None:
85 print 'scons: could not determine the LLVM version from %s' % llvm_config
88 env.Prepend(CPPPATH = [os.path.join(llvm_dir, 'include')])
89 env.AppendUnique(CPPDEFINES = [
90 '__STDC_LIMIT_MACROS',
91 '__STDC_CONSTANT_MACROS',
94 env.Prepend(LIBPATH = [os.path.join(llvm_dir, 'lib')])
95 if llvm_version >= distutils.version.LooseVersion('2.9'):
98 'LLVMObject', 'LLVMMCJIT', 'LLVMMCDisassembler',
99 'LLVMLinker', 'LLVMipo', 'LLVMInterpreter',
100 'LLVMInstrumentation', 'LLVMJIT', 'LLVMExecutionEngine',
101 'LLVMBitWriter', 'LLVMX86Disassembler', 'LLVMX86AsmParser',
102 'LLVMMCParser', 'LLVMX86AsmPrinter', 'LLVMX86CodeGen',
103 'LLVMSelectionDAG', 'LLVMX86Utils', 'LLVMX86Info', 'LLVMAsmPrinter',
104 'LLVMCodeGen', 'LLVMScalarOpts', 'LLVMInstCombine',
105 'LLVMTransformUtils', 'LLVMipa', 'LLVMAsmParser',
106 'LLVMArchive', 'LLVMBitReader', 'LLVMAnalysis', 'LLVMTarget',
107 'LLVMCore', 'LLVMMC', 'LLVMSupport',
109 elif llvm_version >= distutils.version.LooseVersion('2.7'):
112 'LLVMLinker', 'LLVMipo', 'LLVMInterpreter',
113 'LLVMInstrumentation', 'LLVMJIT', 'LLVMExecutionEngine',
114 'LLVMBitWriter', 'LLVMX86Disassembler', 'LLVMX86AsmParser',
115 'LLVMMCParser', 'LLVMX86AsmPrinter', 'LLVMX86CodeGen',
116 'LLVMSelectionDAG', 'LLVMX86Info', 'LLVMAsmPrinter',
117 'LLVMCodeGen', 'LLVMScalarOpts', 'LLVMInstCombine',
118 'LLVMTransformUtils', 'LLVMipa', 'LLVMAsmParser',
119 'LLVMArchive', 'LLVMBitReader', 'LLVMAnalysis', 'LLVMTarget',
120 'LLVMMC', 'LLVMCore', 'LLVMSupport', 'LLVMSystem',
125 'LLVMX86AsmParser', 'LLVMX86AsmPrinter', 'LLVMX86CodeGen',
126 'LLVMX86Info', 'LLVMLinker', 'LLVMipo', 'LLVMInterpreter',
127 'LLVMInstrumentation', 'LLVMJIT', 'LLVMExecutionEngine',
128 'LLVMDebugger', 'LLVMBitWriter', 'LLVMAsmParser',
129 'LLVMArchive', 'LLVMBitReader', 'LLVMSelectionDAG',
130 'LLVMAsmPrinter', 'LLVMCodeGen', 'LLVMScalarOpts',
131 'LLVMTransformUtils', 'LLVMipa', 'LLVMAnalysis',
132 'LLVMTarget', 'LLVMMC', 'LLVMCore', 'LLVMSupport',
140 # Some of the LLVM C headers use the inline keyword without
142 env.Append(CPPDEFINES = [('inline', '__inline')])
143 if env['build'] in ('debug', 'checked'):
144 # LLVM libraries are static, build with /MT, and they
145 # automatically link agains LIBCMT. When we're doing a
146 # debug build we'll be linking against LIBCMTD, so disable
148 env.Append(LINKFLAGS = ['/nodefaultlib:LIBCMT'])
150 if not env.Detect('llvm-config'):
151 print 'scons: llvm-config script not found' % llvm_version
154 llvm_version = env.backtick('llvm-config --version').rstrip()
155 llvm_version = distutils.version.LooseVersion(llvm_version)
158 # Treat --cppflags specially to prevent NDEBUG from disabling
159 # assertion failures in debug builds.
160 cppflags = env.ParseFlags('!llvm-config --cppflags')
162 cppflags['CPPDEFINES'].remove('NDEBUG')
165 env.MergeFlags(cppflags)
167 env.ParseConfig('llvm-config --libs')
168 env.ParseConfig('llvm-config --ldflags')
170 print 'scons: llvm-config version %s failed' % llvm_version
173 assert llvm_version is not None
176 print 'scons: Found LLVM version %s' % llvm_version
177 env['LLVM_VERSION'] = llvm_version
179 # Define HAVE_LLVM macro with the major/minor version number (e.g., 0x0206 for 2.6)
180 llvm_version_major = int(llvm_version.version[0])
181 llvm_version_minor = int(llvm_version.version[1])
182 llvm_version_hex = '0x%02x%02x' % (llvm_version_major, llvm_version_minor)
183 env.Prepend(CPPDEFINES = [('HAVE_LLVM', llvm_version_hex)])
188 # vim:set ts=4 sw=4 et: