Compile a single C++ file

Discussion in 'Mac Programming' started by BigDogUK, Apr 4, 2005.

  1. macrumors newbie

    Hey all.

    I'm starting a little bit of coding on OSX and only started learning recently. I was wondering if there is any way to compile a single C++ file in XCode without having to create a project.

    Just on Windows I was using Context and a .bat file so I could just press F5 and it'd compile with the correct file name. Saves me having to go to console etc.

    So is this possible using XCode? And/or is there another way to do this easily?
  2. Moderator


    Staff Member

    The easiest is just to use Terminal:

    gcc -o appname file.cpp
  3. macrumors member

    you might also want to consider g++ instead of gcc for increased ease of use (it already includes the c++ standard libraries.)
  4. macrumors 603


    XCode isn't well suited for tiny projects like that. Actually I'm not aware of any simple IDE on the Mac that are suitable for this kind of thing ... I'll do some searching ...
  5. macrumors newbie

    Compile a single C++ file

    You could try right/ctrl clicking on the document. In most cases, the context sensitive menu will show a compile option (below Get Info). Right clicking on the file name in the Groups & Files menu should work if that doesn't. & see Compiling Individual Files.

    Also, there's a thing called Predictive Compilation that can be switched on in the building pane of the preferences, which compiles as you code:
  6. macrumors regular

    TextMate has a "Compile Single File to Tool" option, and TextWrangler will let you pipe your file into a shell script.
  7. macrumors 601


    This wins:

    make [I]filename[/I]
    That's the file name without the extension. For example: to compile, just type "make main".
    Your program will be called main. It's a shortcut for g++ -o main
  8. macrumors regular

    I conquer with the make command, its useful however in large applications (and especially in upper classes in post secondary) its advisable to make the compiler display more than just a few errors.

    This is my favorite.

    For C++

    g++ filename.cpp -o name -Wall

    The above compiles a C++ file by the name of filename.cpp and names the executable name. What is different here is the -Wall command, which is short for with all warnings/errors.

    Very useful to display many possible errors that would not be made clear with a default compile.
  9. macrumors newbie

    Whit this method I can compile my source file perfect, but with the gcc sourcefile.c -target -Wall only create and a.out file..... what I am doing wrong?

    I need to compile simple C files for a basic university programing course and my laptop computer is a mac.

  10. macrumors 603


    Nothing. "a.out" is the compiled executable generated from your C code. Rename it to something else (main, or whatever) as you wish.

    Run it in Terminal by typing

  11. macrumors G4

    Nothing wrong. if you don't sepify a name the default name is "a.out" To run it just type ./a.out

    If you want to specify a name use the "-o" switch

    gcc myfile.c -o myfile

    Also use you other switches like -wall or -g if you like But if you leave off the -o gcc uses the default

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