Bug 15588 – Improve DMD -L switch documentation

The DMD Windows compiler switch page https://dlang.org/dmd-windows.html#switches provides the following information for the -L switch currently -Llinkerflag pass linkerflag to the linker link.exe , for example, -L/ma/li At a minimum, this should describe what passing /ma/li would do. I tried making sense of it without much luck by following the link at link.exe to http://www.digitalmars.com/ctg/optlink.html which provides the documentation for Optlink. Is that the library path? If so, why is it using back slashes instead of Windows-style forward slashes. At a minimum the line could be extended to say pass linkerflag to the linker link.exe. For example, -L/ma/li would pass /ma/li to the linker link.exe. When compiling with the -m32 flag, this would mean XXX. I also believe that a practical use case might make things more clear. For instance, -L is required to bind a C shared library to a D executable. How to do this is not described well in other sources. This is motivated by a discussion here: http://forum.dlang.org/thread/[email protected] Also, when -m64 is also passed to DMD, then MS Link is used instead of OptLink. This means that different options should be passed in that case. I believe the relevant link is here: https://msdn.microsoft.com/en-us/library/y0zzbyt4.aspx

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