I am using Eclipse with C++. When I run the program, I get the following message in my Console window:
**** Build of configuration Debug for project Disks Repulsion ****
**** Internal Builder is used for build ****
Nothing to build for Disks Repulsion
I makes changes to the program and run it again, and this time I get following message:
**** Build of configuration Debug for project Disks Repulsion ****
**** Internal Builder is used for build ****
g++ -oDisksRepulsion.exe DisksRepulsion.o -lopengl32 -lglu32 -lglut32
C:\MinGW\bin..\lib\gcc\mingw32\3.4.5........\mingw32\bin\ld.exe: cannot open output file DisksRepulsion.exe: Permission denied
collect2: ld returned 1 exit status
Build error occurred, build is stopped
Time consumed: 103 ms.
When I first ran the program, it started my program (I can see it running in my Window Task Manager), but there is no output being sent to the console.
After making changes to my program, the program is still running in the background, so I get the "Permission denied" error, when I try to run the program. I can make the error go away by ending the instances via task manager. However, when I run the program, I still don't see any output being sent to the console.
Yesterday, I was able to see the output in my console, but don't know why I cannot see it today. Also, when I saw my output, the cursor's focus did not change from the code to the console. I dislike having to do it manually.
I also don't like that when I make changes to my program, and run it again, that the program is not automatically terminated on its own.
I have used VC++ and I prefer the window Dos for output. So, I wanted to know if there is anyway in Eclipse to send the output to Windows Command Prompt, since I know that the instance of the .exe is really gone when I close the program. It automatically gets cursor's focus. I will also be able to get some output.
I installed MinGW with MaSYS or something, to compile the program.
It sounds like your application isn't terminating on its own and you didn't build in any sort of interface that would allow you to kill the program. This sounds like a bug in your code and not an Eclipse issue. If issuing a Ctrl+C in the console won't kill your program, then look into coding something that will let you kill your app with keystroke or input sequence.
If you want to run your app in a command console, then open a normal command console, browse to the folder containing your project, and run the compiled executable from the console instead of doing it through the Eclipse interface.
A simple solution, which I've been using for ages now, is opening a command prompt yourself and running the executable manually. An advantage of this method is that you can set your "DOS" window's size to anything you want. (Right now I'm using a 120x50 window with 8192 lines of scrollback buffer.) Another one is that you will never lose your console output; in fact, you'll be able to see outputs from past runs. (8192 lines is A LOT unless you're printf-debugging a tight loop.)
An alternative to terminating your program from the taskbar is using the red icons on the top right corner of the Eclipse "Console" window.
Is your program's entrypoint main() or WinMain()? There may also be a setting/link option for the "subsystem," console or Windows I think they're called in Visual Studio.
Anyway, if your program is starting up via WinMain, the expectation is that you'll have a Windows form of some sort through which the user can control the program. If you use main(), then your program should automatically trigger the opening of a console window.
Look up AllocConsole() on MSDN (or google it) if you are using WinMain() intentionally and want a console window to also open up. There's some trickery also available via google search that can hook stdout to this console, but at this time I don't remember what it is. (You basically redirect the stdout handle to your new console.)
Good luck.
Related
I have a program that I have written that crashes and I'm in the process of debugging it.
However, the issue is that when I attempt to create a new build, very frequently (but not always!) I get the message:
Cannot open file 'TheExecutable.exe'
I am then unable to delete, rename, move, or in any way modify the executable until the system is rebooted. Attempting to do so in Windows explorer gives
The action can't be completed because the file is open in TheExecutable.exe Close the file and try again.
This behavior isn't unique to the particular crash I'm dealing with right now, nor the particular program. Development is becoming a headache as every attempt to debug will now take several minutes to reboot and bring all my tooling back up.
What, if anything, can I do to prevent Windows from "locking" the executable in such a fashion?
No running process for that executable is visible in Task Manager
Full details of build system:
Windows 10
Intel Compiler, 19.1.0.166 Build 20191121
nmake
C++14
Your process is not being terminated all the way. Since it is not list in the task manager, you can use PSKILL to end it manually.
Open power shell or the console in administrator mode and run
pskill name_of_executable
and it should terminate it so you can re-run it.
I am trying to run a simple "Hello, world" console application but I am experiencing some errors when compiling that I am not familiar with. I have done a bit of research into similar problems with Qt but I haven't been able to find a solution. The closest solution I have come across was to change my Patch Command setting under:
Preferences -> Environment -> System -> Patch Command
to
usr/bin/xterm -e
However, when I try to do this it goes red indicating that I do not have this file.
Environment Preferences Window
The following image is a screenshot of what is displayed in the terminal window when attempting to compile my project.
Console Application Output
Any help on this problem would be much apprectiated! It is very frustrating having something like this hold me back!
Don't run your project in a terminal unless you actually select a working terminal, and that's all. The patch command is irrelevant in this anyway - it's not the terminal, but the patch command -- used to patch source code. You don't need it unless you explicitly use code patching. Go to Projects (Ctrl-5), click on the active Run configuration for your project, uncheck "Run in terminal", done.
I'm using Eclipse Helios in Windows7 for C/C++ programming. I wrote a basic C++ code and tried to compile. The output is:
**** Incremental Build of configuration Release for project Programming Project **** Info: Internal Builder is used for build g++
-o "Programming Project.exe" "src\ch_3_excercises.o" c:/mingw/bin/../lib/gcc/mingw32/4.6.2/../../../../mingw32/bin/ld.exe:
cannot open output file Programming Project.exe: Permission denied
collect2: ld returned 1 exit status
How can I fix this error?
All you have to do is go to project on the menu bar and then click clean project. Clean all of your projects and then it should work.
The same problem with me while editing my code.the easy way i used is ::::::::
press the red button(Terminate) before editing your code then run your code
it is tested and works
I know this is an old question, but it probably does that because you are interrupting the flow of your program, for instance using scanf(), and not actually giving the input it requires, so when you use the command Build the project, then eclipse is waiting a stream from your keyboard (for instance, maybe it's a different type of program, but follow me here).
Once you know than that is the problem, then you might wanna keep an eye in what is that you are not giving to the project and that it is expecting you to; and the way to stop this annoying error the next time you get it, is that in your console view you press the red button.
That will happen if the program is still running in another window. The .exe file stays open until the program finishes execution, and you can't delete a file while any processes have it open.
I don't use Eclipse for C/C++ development, and the problem almost can't happen with Code::Blocks, but this happens very often with Visual C++. Just close the other window and rebuild.
Check your quarantine folder of your antivirus. If you see the executable file, then add it to the Trust list or White list. Your problem should be solved.
It means the same .exe file is running in your system.
A program cannot be build when its already running.
So the simple and most obvious thing to do is:-
Open task manager
Find <yourfilename.exe> under processes
Right click and end task
This stops it from running in background.
So you can build your program anew and run.
Is there any thing I can do to make sure that the shell/command prompt does not show up when I run my C++ program, it is meant to be a background program? While it isn't a huge deal if it displays because it quickly closes, I would prefer it doesn't display at all. Program will run on windows xp/vista/7 OS
Configure your compiler or linker to mark your program as a GUI application.
Windows recognizes two main types of programs: GUI and console. If the EXE header is marked as a console program, then the OS creates a console window prior to executing it. Otherwise, it doesn't. This isn't something you can control at run time; you need to set it at link time. (You can call ShowWindow(GetConsoelWindow(), SW_HIDE) to try to control it at run time, but that doesn't prevent the window from flickering on and then off again. Plus, if your program is sharing the console with another program, like cmd.exe, then you'll have just hidden the user's command-prompt window!) Even if your program doesn't have any actual GUI, that's still the mode you need to avoid having a console window created for you.
If you're starting a new project in Visual Studio, select the "Win32 Console Application" option. If you already have a project, then in your project's configuration properties, find the "Subsystem" setting of the "Linker/System" section and set it to "Console." That makes the linker use the /subsystem:console option. If you're using Mingw, use the -Wl,--subsystem,windows option.
Sounds to me like you want to create a Windows service, not a command line utility. This is why services exist. Long running background tasks that require no user interaction. A simple example here.
When I ask CodeBlocks to run my built application it spawns a terminal window and runs the application within that window. How do I instead get it to run within the IDE's log window?
This is something that is not implemented in Code::Blocks as such.
Target executables are either run directly from the IDE (no console), or via the consolerunner program which calls whatever terminal is appropriate (e.g. cmd under Windows, xterm under Linux) and optionally prompts for a key once the process has exited. Which one it is (terminal or no terminal) depends on the "Type" field in the project's Properties window ("Build Targets" tab).
However, if you absolutely want, you can get the effect of running in the log window indirectly by executing your program as post-build step. In that case, your program's stdout and stderr will both be displayed in the build log tab.