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//===-- fc1_main.cpp - Flang FC1 Compiler Frontend ------------------------===//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
// This is the entry point to the flang -fc1 functionality, which implements the
// core compiler functionality along with a number of additional tools for
// demonstration and testing purposes.
#include "flang/Frontend/CompilerInstance.h"
#include "flang/Frontend/CompilerInvocation.h"
#include "flang/Frontend/TextDiagnosticBuffer.h"
#include "flang/FrontendTool/Utils.h"
#include "clang/Driver/DriverDiagnostic.h"
#include "llvm/Option/Arg.h"
#include "llvm/Option/ArgList.h"
#include "llvm/Option/OptTable.h"
#include <cstdio>
using namespace Fortran::frontend;
int fc1_main(llvm::ArrayRef<const char *> argv, const char *argv0) {
// Create CompilerInstance
std::unique_ptr<CompilerInstance> flang(new CompilerInstance());
// Create DiagnosticsEngine for the frontend driver
if (!flang->HasDiagnostics())
return 1;
// We will buffer diagnostics from argument parsing so that we can output
// them using a well formed diagnostic object.
TextDiagnosticBuffer *diagsBuffer = new TextDiagnosticBuffer;
// Create CompilerInvocation - use a dedicated instance of DiagnosticsEngine
// for parsing the arguments
llvm::IntrusiveRefCntPtr<clang::DiagnosticIDs> diagID(
new clang::DiagnosticIDs());
llvm::IntrusiveRefCntPtr<clang::DiagnosticOptions> diagOpts =
new clang::DiagnosticOptions();
clang::DiagnosticsEngine diags(diagID, &*diagOpts, diagsBuffer);
bool success =
CompilerInvocation::CreateFromArgs(flang->invocation(), argv, diags);
if (!success)
return 1;
// Execute the frontend actions.
success = ExecuteCompilerInvocation(flang.get());
// Delete output files to free Compiler Instance
return !success;