Error in Driver compilation for Chapter 5

[Fare9]

There are some issues in the code of Driver with recent versions of LLVM (I'm using the last version of the LLVM repository), the first problem is with the next code:

sys::fs::OpenFlags OpenFlags = sys::fs::OF_None;
if (FileType == CGFT_AssemblyFile)
    OpenFlags |= sys::fs::OF_Text;

The compiler will complain, so it's necessary to add a missing header:

#include "llvm/Support/FileSystem.h"

Next is the legacy::PassManager, the compiler complains adding the result from createPrintModulePass to the PassManager, since the returned llvm::ModulePass * cannot be casted to the llvm::Pass from that PassManager, so it is possible to use a code similar to the one of the tool opt. First we add the next header:

#include "llvm/Transforms/Utils/Debugify.h"

And then we change the next code:

Learn-LLVM-12/Chapter05/tinylang/tools/driver/Driver.cpp

Lines 116 to 126 in e53b4df

	legacy::PassManager PM;
	if (FileType == CGFT_AssemblyFile && EmitLLVM) {
	PM.add(createPrintModulePass(Out->os()));
	} else {
	if (TM->addPassesToEmitFile(PM, Out->os(), nullptr,
	FileType)) {
	WithColor::error() << "No support for file type\n";
	return false;
	}
	}
	PM.run(*M);

For:

llvm::DebugifyCustomPassManager PM;

if (FileType == CGFT_AssemblyFile && EmitLLVM)
    PM.add(createPrintModulePass(Out->os()));
else
{
    if (TM->addPassesToEmitFile(PM, Out->os(), nullptr, FileType))
    {
        WithColor::error() << "No support for file type\n";
        return false;
    }
}

PM.run(*M);