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Building_JSBSim_with_Visual_Cpp_2010.pdf

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    Building JSBSim under Visual C++ 2008 Express, as Executable and Library By Bill Galbraith billg (at) holycows dot net October 29, 2010 Preface: Okay, I’m an idiot sometimes. I’m not that good in Visual C++ 2008 Express, so it took me a while, with the help of some other people, namely Csaba Halász, to get this down. I took baby steps, and show them here, in case you are like me. These steps were written on a 32-bit version of Windows XP. It may vary slightly with different versions of Windows. Preinstalled:  Visual C++ 2008 Express edition  CVS Building the JSBSim program 1. Download JSBSim from CVS, using the normal checkout method as described on the web page. At the time of this tutorial, here were the command that I used: cvs -d:pserver:anonymous@jsbsim.cvs.sourceforge.net:/cvsroot/jsbsim login cvs -z3 -d:pserver:anonymous@jsbsim.cvs.sourceforge.net:/cvsroot/jsbsim co -P JSBSim Note that I used CygWin to do this, as it has all of the tools such as CVS that I needed. You’ll have to figure this out yourself. For the password asked after the first command, just press Enter.
    2. Open up the Visual C project file in the JSBSim directory, called JSBSim.vcproj. This is what you should see, with the Solution Explorer on the left side being the only window showing any significant information.
    3. We will build the executable program first, so just press F7, or pull down the Build menu and select either Build Solution or Rebuild Solution, the difference being that Rebuild Solution cleans out all the generated files from a previous build. This is our first build, so there is nothing to clean out. When the build starts for the first time, Visual C++ will ask for a file name for the solution file, and will provide a default name. You can accept the default name. I like to prepend an underscore on the name, to make it _JSBSim.sln, just so that it is close to the top of the Explorer list of file, and therefore easier to find. Name it whatever you would like, or accept the default name. With the source code that I used, there were 4 warning issues, but no errors. 4. One way to run the program is directly from Visual C++, however, the program accepts a script file name as an argument, so we have to set up Visual C++ to pass this argument in when it is started. This method is fine if you want to always run JSBSim with the same script, or rarely change the script file. If you want to run JSBSim with different script files, skip to the next step and run it from the command line. Open up the the Project Properties. This menu box is easily called up by pressing Alt- F7, or by pulling down the Project menu bar and selecting Properties, or by right
    clicking the mouse on the JSBSim in the solution Explorer on the left side, and selecting Properties. However you do it, this is the menu box that pops up.
    Press the “+” sign beside the Configuration Properties on the left side to expand the menu, then click on the Debugging line. You should see this: When the program is run from Visual C++, the command is issued to run the JSBSim.exe program using the full path to the executable, which is all contained in the replaceable parameter $(TargetPath). By default, the program starts in the default Windows working directory, but we need to be in the project directory. You could hard code this path, but if your project ever got moved, it would be wrong, so the easier and better way to do it is to put in a replaceable parameter. On the right side, find the line that says Working Directory. Edit this line to say $(ProjectDir). On the right side, find the line that says Command Arguments, and enter the command line argument --script=scripts\c1723.xml, which will execute that script when the program is started. Your Property Page should now look like this:
    You can now press OK to close the JSBSim Property Page. You can now run the program, either by pressing Ctrl-F5, or pulling the Debug menu and selecting Start without Debugging. A command window will pop up and execute the JSBSim program. It runs for a couple of minutes with this script, which starts the C-172 and performs a take-off. It generates a comma-separated values (.csv) file in the JSBSim directory called JSBout172B.csv. You will have to press Enter when it finishes, and the window is closed automatically.
    5. Another way to run the JSBSim program is from a command line. Visual C++ provides a command line prompt entry in the Windows Start menu under the Visual Studio tools, which provides a path to all of the Visual C++ tools, etc. However, we don’t need this, so you can either open that up, or just open a command window by pressing the Windows key and R, or by pulling up the start menu and typing in cmd and pressing Enter or the OK button. That will cause a command window to pop up. We need to go to the JSBSim directory. On my computer, with is on the D: drive, so I would type the commands shown:
    We can now run the JSBSim program, which is located in the Debug directory. We need to pass the command line argument, so type in the command as shown: The program will start, load the script and execute, and generate the same JSBout172B.csv file as if we ran it from Visual C++. However, if you want to run a different script, it is easier to do it from this command box, since you have to type it in. Either way produces the same results.
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