+ if llvm_dir is None:
+ print 'scons: LLVM environment variable must be specified when building for windows'
+ return
+
+ # Try to determine the LLVM version from llvm/Config/config.h
+ llvm_config = os.path.join(llvm_dir, 'include/llvm/Config/llvm-config.h')
+ if not os.path.exists(llvm_config):
+ print 'scons: could not find %s' % llvm_config
+ return
+ llvm_version_major_re = re.compile(r'^#define LLVM_VERSION_MAJOR ([0-9]+)')
+ llvm_version_minor_re = re.compile(r'^#define LLVM_VERSION_MINOR ([0-9]+)')
+ llvm_version = None
+ llvm_version_major = None
+ llvm_version_minor = None
+ for line in open(llvm_config, 'rt'):
+ mo = llvm_version_major_re.match(line)
+ if mo:
+ llvm_version_major = mo.group(1)
+ mo = llvm_version_minor_re.match(line)
+ if mo:
+ llvm_version_minor = mo.group(1)
+ if llvm_version_major is not None and llvm_version_minor is not None:
+ llvm_version = distutils.version.LooseVersion('%s.%s' % (llvm_version_major, llvm_version_minor))
+
+ if llvm_version is None:
+ print 'scons: could not determine the LLVM version from %s' % llvm_config
+ return
+ if llvm_version < distutils.version.LooseVersion(required_llvm_version):
+ print 'scons: LLVM version %s found, but %s is required' % (llvm_version, required_llvm_version)
+ return
+
+ env.Prepend(CPPPATH = [os.path.join(llvm_dir, 'include')])
+ env.AppendUnique(CPPDEFINES = [
+ '__STDC_LIMIT_MACROS',
+ '__STDC_CONSTANT_MACROS',
+ 'HAVE_STDINT_H',
+ ])
+ env.Prepend(LIBPATH = [os.path.join(llvm_dir, 'lib')])
+ # LIBS should match the output of `llvm-config --libs engine mcjit bitwriter x86asmprinter`
+ if llvm_version >= distutils.version.LooseVersion('3.6'):
+ env.Prepend(LIBS = [
+ 'LLVMBitWriter', 'LLVMX86Disassembler', 'LLVMX86AsmParser',
+ 'LLVMX86CodeGen', 'LLVMSelectionDAG', 'LLVMAsmPrinter',
+ 'LLVMCodeGen', 'LLVMScalarOpts', 'LLVMProfileData',
+ 'LLVMInstCombine', 'LLVMTransformUtils', 'LLVMipa',
+ 'LLVMAnalysis', 'LLVMX86Desc', 'LLVMMCDisassembler',
+ 'LLVMX86Info', 'LLVMX86AsmPrinter', 'LLVMX86Utils',
+ 'LLVMMCJIT', 'LLVMTarget', 'LLVMExecutionEngine',
+ 'LLVMRuntimeDyld', 'LLVMObject', 'LLVMMCParser',
+ 'LLVMBitReader', 'LLVMMC', 'LLVMCore', 'LLVMSupport'