namespace std and LLVM PassManagerInternal.h file - c++

Question

I'm exploring compiler writing with Flex, Bison and LLVM (latest versions of all) using this example: http://gnuu.org/2009/09/18/writing-your-own-toy-compiler/
Github source is on the last page of that link. I can't get it to compile and any help would be appreciated.
Unfortunately for me, the solution is non-obvious.
Here are the errors:
In file included from codegen.cpp:2:
In file included from ./codegen.h:8:
In file included from /usr/local/Cellar/llvm/3.8.1/include/llvm/IR/PassManager.h:46:
/usr/local/Cellar/llvm/3.8.1/include/llvm/IR/PassManagerInternal.h:298:12: error: use of undeclared identifier 'make_unique'
return make_unique<ResultModelT>(Pass.run(IR, AM));
^
/usr/local/Cellar/llvm/3.8.1/include/llvm/IR/PassManagerInternal.h:298:24: error: unexpected type name 'ResultModelT': expected expression
return make_unique<ResultModelT>(Pass.run(IR, AM));
^
/usr/local/Cellar/llvm/3.8.1/include/llvm/IR/PassManagerInternal.h:336:12: error: use of undeclared identifier 'make_unique'
return make_unique<ResultModelT>(Pass.run(IR));
^
/usr/local/Cellar/llvm/3.8.1/include/llvm/IR/PassManagerInternal.h:336:24: error: unexpected type name 'ResultModelT': expected expression
return make_unique<ResultModelT>(Pass.run(IR));
^
codegen.cpp:36:24: error: no matching conversion for functional-style cast from 'unique_ptr<llvm::Module>' to 'llvm::EngineBuilder'
ExecutionEngine *ee = EngineBuilder( unique_ptr<Module>(module) ).create();
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/anaconda/include/llvm/ExecutionEngine/ExecutionEngine.h:493:7: note: candidate constructor (the implicit move constructor) not viable: no known conversion
from 'unique_ptr<llvm::Module>' to 'llvm::EngineBuilder' for 1st argument
class EngineBuilder {
^
/anaconda/include/llvm/ExecutionEngine/ExecutionEngine.h:493:7: note: candidate constructor (the implicit copy constructor) not viable: no known conversion
from 'unique_ptr<llvm::Module>' to 'const llvm::EngineBuilder' for 1st argument
/anaconda/include/llvm/ExecutionEngine/ExecutionEngine.h:525:3: note: candidate constructor not viable: no known conversion from 'unique_ptr<llvm::Module>'
to 'llvm::Module *' for 1st argument
EngineBuilder(Module *m) : M(m) {
^
codegen.cpp:131:49: warning: expression with side effects will be evaluated despite being used as an operand to 'typeid'
[-Wpotentially-evaluated-expression]
std::cout << "Generating code for " << typeid(**it).name() << endl;
^
In file included from codegen.cpp:2:
In file included from ./codegen.h:8:
/usr/local/Cellar/llvm/3.8.1/include/llvm/IR/PassManager.h:207:22: error: no member named 'getName' in 'llvm::Module'
<< IR.getName() << "\n";
~~ ^
codegen.cpp:30:5: note: in instantiation of member function 'llvm::PassManager<llvm::Module>::run' requested here
pm.run(*module);
^
In file included from codegen.cpp:2:
In file included from ./codegen.h:8:
/usr/local/Cellar/llvm/3.8.1/include/llvm/IR/PassManager.h:517:20: error: no member named 'getName' in 'llvm::Module'
<< IR.getName() << "\n";
~~ ^
/usr/local/Cellar/llvm/3.8.1/include/llvm/IR/PassManager.h:372:28: note: in instantiation of member function
'llvm::AnalysisManager<llvm::Module>::invalidateImpl' requested here
return derived_this()->invalidateImpl(IR, std::move(PA));
^
/usr/local/Cellar/llvm/3.8.1/include/llvm/IR/PassManager.h:217:22: note: in instantiation of member function
'llvm::detail::AnalysisManagerBase<llvm::AnalysisManager<llvm::Module>, llvm::Module>::invalidate' requested here
PassPA = AM->invalidate(IR, std::move(PassPA));
^
codegen.cpp:30:5: note: in instantiation of member function 'llvm::PassManager<llvm::Module>::run' requested here
pm.run(*module);
^

Answer 1

Well, there is llvm::make_unique in include/llvm/ADT/STLExtras.h. You have not stated if you are writing your own code based on llvm source or compiling llvm or what but I assume llvm::make_unique is there exactly for that reason to fill the missing pieces of C++11.
Moreover, looking at the tutorials it seems that llvm::make_unique is explicitly used everywhere.
Update
So I successfully build the given example against LLVM 3.9.0 from svn. I had to change and fix all the calls to getGlobalContext() since that is gone in LLVM 3.9.0, but I did not encounter any make_unique related issues. However the example itself is a bit broken. codegen.h is missing an include guard, codegen.cpp is missing an include to #include "llvm/IR/LLVMContext.h", even if it wants to use the old getGlobalContext() method. I did this on Windows with MSVC 2015, can you specify your environment and compiler so that I can try the same?