I have an ncurses program that I'd like to interactively debug using CLion. The problem is that when I run the program in CLion to debug it, the inbuilt console where the program is run doesn't display the output of the ncurses program properly.
I'd like to have the program run in my systems terminal so I can see the output properly whilst debugging the program with CLions debugger.
Is there any way to do this?
The best way to accomplish this is to use GDB now it can be really frustrating to get started so Ill show you how I accomplished it in linux
open a terminal and go to your project debug file and type gdbserver localhost:1234 ./myFile
open clion to myFile project and in the upper right corner you should see a build all (or your projects name) click it and go to "edit configurations"
in the upper left corner you should see a plus sign, click it and press "GDB remote debug"
then in "target remote" type tcp:127.0.0.1:1234
Next in "path mappings" press the plus and type /location/to/file/myFile (same file as in 1.) in both Remote and Location
Press OK and in the upper right corner select the name of the configuration that you just made and press debug
you might need to try to restart the gdbserver one more time for this to work but if you did all the steps above you should see a debug prompt come up and on the terminal you should see your project running.
There are some limitations with this for example you always have to run gdbserver localhost:1234 ./myFile command on your terminal for it to work.
Some Video/documentation that helped me:
Debugging with GDB at 33:35 (Video by JetBrain)
GDB documentation on Jetbrain
I hope this helped :)
In other debuggers, you would do this by running the ncurses application in a terminal, and attaching the debugger to the process using ncurses.
Doing that avoids interference between ncurses (which changes the terminal I/O modes) and the debugger's command-line.
The attach feature is a recently released feature of the CLions debugger:
Further reading:
More power to debug: Attach to local process (January 20, 2016)
CLion 1.2 roadmap (August 31, 2015)
Debugging in CLion (May 8, 2015 )
CLion answers frequently asked questions (September 16, 2014)
Debugging ncurses application with gdb
Using GNU's GDB Debugger:
Debugging Ncurses Programs
Related
I am trying to remote-debug a project in Clion but I can't seem to get a working debugging session. I think I've correctly launched my gdb server/client because my gdb client connects to the JLinkGDBServerCL.exe process
and they communicate.However, in clion, I can't break in the source code. The only thing that I get from clion is a disassembly of my program with no symbol at all which is odd because there is a symbol table in the .elf
that I am trying to debug. And one last detail, I can't "step in" the assembly code neither (but I can run commands in the gdb client in Clion).
Here is a picture of my debug configuration : debug config
And here is what I'm talking about when I say I can't get a proper debugging session : "debugging session"
Does anybody know what the problem is ?
System info:
OS: Windows 10
IDE: Clion 2018.1.6
GDB Server: JLinkGDBServerCL.exe
Target: TM4C129 (cortex M4) (no OS, just a firmware)
Program: USBMicroloader.elf (debug mode)
I'm having the same issue. I found that if I add the path to the elf file from the build directory into the "Symbol file" (in the run configuration where you set up the remote gdb connection), it fixes your issue. This seems a bit kludgey, but I haven't been able to find a better solution.
However, the next issue I run into is that I can only run that configuration a single time. When I stop debugging I get a message in the console that reads Remote doesn't know how to detach. Debugger disconnected. The clean and build menu options are greyed out until I restart CLion.
I am writing a small Linux app using Visual Studio 2015. To do so, I am using the Visual Studio 2015 Linux Extension, v 1.0.7 (the latest version as I'm writing this post).
I can compile and run the app on the remote environment using gdbserver, but I can't use breakpoints. I don't get why.
Details:
The target environment is a remote Ubuntu 64, on which g++, gdb and gdbserver have been upgraded today.
The extension works in that sense the C++ code is properly sent to the remote environment and properly compiled as a result of pressing F7:
My code (I am using some toy code for this post)
The resulting build log
The code is also properly executed remotely using gdbserver when I'm running it: the output is properly sent back by gdbserver as I can view it in VS's Linux Console Window.
My problem: when I set a breakpoint in my code (as in line 7 of my code above), it is just ignored. And when I just press F11 to start debugging straight at startup, the program just runs as if I wasn't debugging.
I'm wondering whether this is tied to the debugging from host 127.0.0.1 message above.
Of course I'm in debug mode when trying:
Optimizations are disabled:
Symbols are there:
And debug settings are by default. I left them unchanged after having installed the extension. There are no ports set, could it be the cause?
And finally, I can do some step-by step debugging if I replace gdbserver by gdb in my debug configuration above, and if I use F10 (or any other stepping option), not F5, to start debugging. The drawbacks being that I lose the Linux Console and I still can't set breakpoints, they are ignored. I have to step during the whole execution path:
This is the first time I am trying this Linux Extension with a remote environement. I was formerly using it with a local Cygwin and had no issues with breakpoints. But this was the previous version (1.05) of the Visual Studio 2015 Linux Extension so this does not prove anything.
Any idea?
I'm running Eclipse on win7. I want to make console applications that can run on either windows or linux. I followed the guide here on how to setup the compiler
I'm trying to compile and run a simple hello world program. It compiles fine, but when I try to debug I get the following error:
'launching test' has encountered a problem.
Error in final launch sequence.
Clicking details reveals the following information.
Error in final launch sequence
Failed to execute MI command:
-exec-run
Error message from debugger back end:
Don't know how to run. Try "help target".
Don't know how to run. Try "help target".
My gdb debugger path is C:\codesourcery\bin\arm-none-eabi-gdb.exe
I'm not exactly sure how to proceed.
If you're creating a windows console then I would think you would need gdb found in c:\minGW or wherever you have your Windows 7 gcc toolchain.
To change your debugger on Eclipse Kepler go to:
Run->Debug Configurations. Select Debugger tab and in the "GDB debugger:" field, enter the path of your Windows gdb.exe file (c:\MinGW\bin\gdb.exe if you're using minGW)
I realize this is an old question, but hoping it will help someone. In my case, there was a breakpoint set with only a memory address (no file name associated with it). Not sure how I got into this situation... Once I removed the breakpoint, I was able to launch my program with debugger. Note, I am using Eclipse Luna CDT (SR2)
I'm trying to get Eclipse CDT (64 bit eclipse) working on Windows 7 with GCC. When I first got GDB working (that was a challenge in itself), running the program in debug mode was the only way I got output. Running it normally didn't give any console output. After hours of googling, I figured out that if I added C:/cygwin/bin to my environment path in eclipse, I could get output when running the program normally. Then I ran it in debug mode and there was no output. I tested this a couple of times to make sure it was the addition of the path causing the problem. This is the program I was running,
#include <iostream>
using namespace std;
int main() {
cout << "Hello World!" << endl;
return 0;
}
So how can I get both normal and debug modes working, and why did I have to include that path in the first place (it's already in my cygwin path and why does CDT need it?) ? Also, why is it that if I add a path to my Run configurations it will also be added to my Debug configurations?
From wiki eclipse:
In Eclipse CDT on Windows, standard output of the program being run or debugged is fully buffered, because it is not connected to a Windows console, but to a pipe. See bug 173732 for more details. Either add flush calls after every printf or add the following lines at the start of the main function:
setvbuf(stdout, NULL, _IONBF, 0);
setvbuf(stderr, NULL, _IONBF, 0);
I don't think I can answer everything but I use exactly the same set-up as you and I've had to deal with quite a few issues like this (I'm wondering if you had trouble how to juggle using the 32-bit/64-bit JVM and Internet browsing)!
The cygwin/bin path must be specified because that is where gcc, gdb and all the other cygwin tools and dlls are located (I'll assume you're using cygwin flavour of gcc rather than MinGW flavour). I believe you must specify it in the Windows environment (using a win32 file path) because Eclipse is running using the Windows JVM and therefore deals with win32 paths. Consequently, it doesn't matter that cygwin/bin is added to the PATH variable in the cygwin environment. CDT is looking for cygwin using Eclipse, and Eclipse needs to find cygwin1.dll from Windows.
I might be totally wrong, but if I had to guess I would say that you need to make absolutely sure you have properly set the PATH environment variable correctly for both configurations.
One thing to note is that in Eclipse there is no difference between a configuration shown in the Debug Configurations window and one with the same name in the Run Configurations window. The only difference between the two windows is that one will run the program without using a debugger and has tabs for setting debug settings. Therefore it's no surprise that changing settings in one will also affect the other.
As you may know, for many projects the build system is set up to produce two (sometimes more) sets of binaries: one with debugging info/symbols (DEBUG) and one without (RELEASE). In this case, you normally have two configurations in Eclipse: one to run the DEBUG binary and one to run the RELEASE binary. Both of these will show up in both the Debug Configurations window and in the Run Configurations window. The point is that you can run DEBUG either with or without gdb, but RELEASE cannot be used by gdb.
That said, I'm not sure why adding the correct path to the run configuration would stop the DEBUG binary from outputting to the console. I suspect something else is going on here, perhaps a mismatch of debug info and debugger.
To (hopefully) answer your question as to how to get both configurations working, go the whole-hog and just add C:\cygwin\bin; to the Windows PATH environment variable. I'm guessing that will allow both to work. I'll assume you know how to do that but please post a comment if not.
The other thing to try would be to compile and run the program from a cygwin shell. If it works there it's probably a safe bet that your PATH environment variable is not set correctly when using eclipse.
Hope that helps!
Adding the Path was correct before gdb 7.3. Now when I add the path I can no longer use breakpoints as it cannot find the dll files as they are no longer part of the path. To fix this you can easily add the entire path from the environment by following these instructions.
left click the project
enter the RUN/DEBUG settings for the project
select the executable
click edit
select Environment Tab
click Select...
scroll down to Path (Case sensitive)
check mark Path
press OK
press OK
press OK
You can see the dll problem as it appears in the gdb console
error,msg="During startup program exited with code 0xc00000be."
or
error,msg="During startup program exited with code 0x00000135."
and you may get an error window pop up saying it could not clear the breakpoint
You need to set up linker
I am using MinGW.
Follow below steps.
Goto Project > Properties > C/C++ Build > Settings > Tool Settings (Tab) > MinGW C++ Linker (Option) > Add Command (g++ -static-libgcc -static-libstdc++) (default command is only g++)
Don't debug or run C or C++ applications from inside Eclipse if they target Cygwin. TK link to "you're gonna have a bad time" meme.
There are problems with Cygwin stdout/stderr that don't show up if you run the programs from the normal Cygwin console (where you would be running bash), but they do show up in pretty much every other way you can run them.
The normal way that programs run other programs in Linux and other posix-supporting environments is to reroute the i/o to a pty. Cygwin can't support pty's 100% in Windows.
Some of the problems can be ameliorated by the setvbuf calls in #infoartenovo's answer.
A flip side of this problem is that applications written to use Windows' Console API don't work well in ptys.
We are all collateral damage in an unwinnable war.
http://cygwin.com/ml/cygwin/2011-12/msg00236.html
https://code.google.com/p/mintty/issues/detail?id=56
We're using the Eclipse CDT 5 C++ IDE on Windows to develop a C++ application on a remote AIX host.
Eclipse CDT has the ability to perform remote debugging using gdbserver. Unfortunately, gdbserver is not supported on AIX.
Is anyone familiar with a way to debug remotely using Eclipse CDT without gdbserver? Perhaps using an SSH shell connection to gdb?
finally I got gdb run remotly anyhow now. At the Bug-symbol on the taskbar I took Debug Configurations - GDB Hardware Debugging.
In Main C/C++ Applications I set the full path on the Samba share of the executable (X:\abin\vlmi9506). I also set a linked folder on X:\abin in the project. Then I modified my batch-script in GDB Setup. It's not directly calling gdb in the plink-session but a unix-shell-script, which opens gdb. By this I have the possibility to set some unix environment-variables for the program before doing debug. The call in my batch:
plink.exe prevoax1 -l suttera -pw XXXXX -i /proj/user/dev/suttera/vl/9506/test/vlmi9506ddd.run 20155 dev o m
In the unix script I started gdb with the command line params from eclipse, that I found in my former tryals. The call in the shell command looks like this:
gdb -nw -i mi -cd=$LVarPathExec $LVarPathExec/vlmi9506
Then IBM just gives gdb 6.0 for AIX. I found version 6.8 in the net at http://www.perzl.org/aix/index.php?n=Main.Gdb. Our Admin installed it.
I can now step through the program and watch variables. I even can write gdb-commands directly in the console-view. yabadabadooooooo
Hope that helps to others as well. Can not tell, what was really the winner-action.
But each answer gives more new questions. Now I got 3 of them.
When I start the debug config I have to click restart in the toolbar to come really in the main procedure. Is it possible to come directly in main without restarting?
On AIX our programs are first preprocessed for embedded sql. The preprocessed c-source is put in another directory. When I duble-click the line to set a breakpoint, I get the warning "unresolved breakpoint" and in the gdb-console I see, that the break is set to the preprocessed source which is wrong. Is it possible to set the breakpoints on the right source?
We are using CICS on AIX. With the xldb-Debugger and the CDCN-command of CICS we manage that debugging is started, when we come in our programs. Is it possible to get that remotely (in plink) with gdb-eclipse as well?
I wouldn't normally take a shot in the dark on a question I can't really test the answer to, but since this one has sat around for a day, I'll give it a shot. It seems from looking at:
http://wiki.eclipse.org/TM_and_RSE_FAQ#How_can_I_do_Remote_Debugging_with_CDT.3F
...that even if the CDT has changed since that wiki page was made, you should still be able to change the debug command to:
ssh remotehost gdb
instead of using TM which uses gdbserver. This will probably be slightly slower than the TM remote debugging since that actually uses a local gdb, but on the other hand this way you won't have to NFS or SMB mount your source code to make it available to the local debugger (and if you're on a LAN it probably won't matter anyhow).
There's also a reference TCF implementation for linux, which you may or may not have any luck recompiling for AIX, but it allows for remote debugging if gdbserver is otherwise not available:
http://wiki.eclipse.org/DSDP/TM/TCF_FAQ
tried also to remotly debug an aix-appl with windows eclipse-cdt-gdb.
Got blocked at the end with unix/windows path-problems. Maybe my result can help u a little further - maybe you already got it work. I'm interested in your comment. asked on eclipse news portal- following the answer of martin oberhuber (thanks again) tried dsp dd (also blocked with path problem) and set an request in eclipse bugzilla.
here the link to news:
http://www.eclipse.org/newsportal/article.php?id=406&group=eclipse.dsdp.tm
Here my bugzilla:
https://bugs.eclipse.org/bugs/show_bug.cgi?id=252758
At the moment we still debug localy with xldb but I am trying ddd-gdb at the moment. At least locally gdb is running.