Thread: Code failing to create file

I am trying to build some third party code that is an compiler for the old MC6809 CPU.

Code:

        /*  Create an asm file that will receive the assembly language code:
        */
        if (numErrors == 0)
        {
            if (verbose)
            {
                cout << "Assembly language filename: " << asmFilename << "\n";
                cout << flush;
            }
            ofstream asmFile(asmFilename.c_str(), ios::out);
            if (!asmFile)
            {
                int e = errno;
                cout << PACKAGE << fatalErrorPrefix << "failed to create assembler file " << asmFilename
                     << ": " << strerror(e) << endl;
                return EXIT_FAILURE;
            }
            if (!asmText.writeFile(asmFile))
            {
                cout << PACKAGE << fatalErrorPrefix << "failed to write output assembly file " << asmFilename << endl;
                return EXIT_FAILURE;
            }
            asmFile.close();
            if (!asmFile)
            {
                cout << PACKAGE << fatalErrorPrefix << "failed to close output assembly file " << asmFilename << endl;
                return EXIT_FAILURE;
            }
        }

        if (verbose)
            cout << numErrors << " error(s)"
                    << ", " << numWarnings << " warning(s)." << endl;

The output from this section of code and the sub-program it calls is

Code:

Assembly language filename: atol.s
0 error(s), 0 warning(s).
Assembler command: lwasm -fobj --pragma=forwardrefmax -D_COCO_BASIC_ --output='atol.o' 'atol.s'
Cannot open file ''atol.s'': No such file or directory
Exit code from assembler command: 1

Any suggestion of code to add to trace the problem; it is a large program built using configure/make so using debugger would like be beyond me.

Edit: I have search the file atol.s does not exist.
Edit2: I am thinking this test "if (!asmFile)" is not correct.
Edit3: Link to full file cmoc/main.cpp at master * stahta01/cmoc * GitHub
The snippet posted is around line 1250.
Edit4: I am porting the code to work under Windows 10; it is designed for Linux; but, has worked in the past under windows with, unknown to me, minor changes.

Tim S.