fixes to make this branch compatible with llvm versions before 3.4

llvmpy/include/llvm_binding/extra.h

@@ -955,6 +955,7 @@ PyObject* TargetRegistry_targets_list()
                   "llvm::Target", "llvm::Target");
 }
 
+#if LLVM_VERSION_MAJOR >= 3 and LLVM_VERSION_MINOR >= 4
 static
 PyObject* MemoryObject_readBytes(const llvm::MemoryObject *mobj,
                                  uint64_t addr,
@@ -986,7 +987,6 @@ fail:
     Py_RETURN_NONE;
 }
 
-#if LLVM_VERSION_MAJOR >= 3 and LLVM_VERSION_MINOR >= 4
 static
 PyObject* MCDisassembler_getInstruction(llvm::MCDisassembler *disasm, 
                                         llvm::MCInst &instr,

llvmpy/src/MC/__init__.py

@@ -1,3 +1,5 @@
+#this file is not processed unless the llvm library is 
+#version 3.4 or higher. see llvmpy/__init__.py for details.
 from binding import *
 from ..namespace import llvm
 from ..Support.StringRefMemoryObject import MemoryObject

llvmpy/src/Support/StringRefMemoryObject.py

@@ -2,8 +2,8 @@ from binding import *
 from ..namespace import llvm
 from ..ADT.StringRef import StringRef
 
-MemoryObject = llvm.Class()
 if LLVM_VERSION >= (3, 4):
+    MemoryObject = llvm.Class()
     StringRefMemoryObject = llvm.Class(MemoryObject)
 
     @MemoryObject
@@ -25,8 +25,6 @@ class MemoryObject:
                 raise Exception("expected readBytes to be successful!")
             return result
 
-
-if LLVM_VERSION >= (3, 4):
     @StringRefMemoryObject
     class StringRefMemoryObject:
         _include_ = "llvm/Support/StringRefMemoryObject.h"

test/example-instruction-info.py

@@ -3,6 +3,9 @@ from llvmpy import api, extra
 
 
 def main():
+    if llvm.version < (3, 4):
+        return 0
+
     triple = "i386--"
 
     print("init start")

test/testall.py

@@ -652,6 +652,9 @@ def do_llvm_target():
          tm.is_little_endian()
 
 def do_llvm_mc():
+    if llvm.version < (3, 4):
+        return
+
     from llvm import target
     from llvm import mc