I am trying to run a simple linked list program in code blocks, but I am not able to run the program and i getting the below error :
Active debugger config: GDB/CDB debugger:
Default Building to ensure sources are up-to-date Selecting target:
Debug ERROR: You need to specify a debugger program in the debuggers's settings.
(For MinGW compilers, it's 'gdb.exe' (without the quotes))
(For MSVC compilers, it's 'cdb.exe' (without the quotes))
I tried some of the posts given here on Stack Overflow, but that setting is already there in the code blocks.
Find out where gdb.exe is located in whatever GCC toolchain you
are using with Code::Blocks, e.g:-
For MinGW: C:\MingGW\bin\gdb.exe,
For mingw-w64: C:\mingw-w64\x86_64-5.2.0-posix-seh-rt_v4-rev0\mingw64\bin\gdb.exe
For TDM-GCC: C:\TDM-GCC-64\bin\gdb.exe
If you can't find it then the root of the problem is that the debugger is (no longer)
installed.
If you find it, then enter its full pathname in Settings -> Debugger settings -> GDB/CDB debugger -> Default -> Executable path.
Code::Blocks will check the pathname you enter and if it can't find it then the edit-field will turn red. Otherwise, OK out
and the debugger will then work.
If the directory containing gdb.exe is in your PATH then you can simply enter gdb.exe in the field.
Related
I am trying to learn C programming. And I am using VS Code for running almost everything.
But none of my C Codes execute. The c_cpp_properties.json is configured with the MinGW header files library path included in the "msvc-x64" section. It says "cannot open source file "vcruntime_string.h" (dependency of "string.h")" all the time.
First of all, it's weird that it is not letting you compile by not finding string.h dependency. I suggest to try the following:
Try compiling your files either with gcc or g++ (depending on the language you're using) directly from the terminal, to see if you get the "a.out" file.
Ex: Open your terminal. Find your .c files (if you're programming in C) gcc *.c then ./a.out
Try using CodeBlocks, Build and Run to see if you get the same error.
If 1 or 2 worked, it means your VS software didn't like something when you made the installation process. Reinstall VS.
I had the same problem.
I solved it just by reloading the window.
You can either press Ctrl + R or type "Developer: Reload Window" in the command palette.
You can open the command palette either by pressing Ctrl + Shift + P or going to "View"(up left corner) then "Command Palette..."
I'm debugging a C application using eclipse CDT. Generally I can go up in breakpoints and also step by step. But the problem is that I have problem to see the variable in steps. But if I want to see the content of a char** variable called path_list, I see in the variables window this error:
Failed to execute MI command:
-data-evaluate-expression *(*(path_list))
Error message from debugger back end:
value has been optimized out
So I tried to see the memory content of the variable path_list but I got an error popup:
Has someone an idea about this problem and how I can see the content of path_list?
Make sure you compiled your code with -g and -O0 options. By default compiler not uses -O0.
I am trying to debug my application which use one static builded library.
I want to set break points in my library so i tried to set it using below command :
break TS.cpp:600(FIle name:line no)
but it says
No source file named TS.cpp.
Make breakpoint pending on future shared library load?(y or [n])
so I presses y here (I came to know after browsing internet) but after pressing y gdb is not stopping at my break point and it completed executing program.
Why GDB is not stopped at my break point??
Any input is highly appreciated.
No source file named TS.cpp
This means one of two things:
either the file TS.cpp was not compiled with -g (or equivalently TS.o has been stripped), or
the file TS.o was not linked into the application.
Since you are seeing prints from that source, it's a safe bet that #1 is the actual root cause.
info sources command shows only my application.c and not the files of my library
That is another confirmation that #1 is the root cause.
The problem in your case is with source mapping. It normally happens when application is compiled at some other machine and you are debugging it on some other machine where source location is different.
You can specify source path using directory command of gdb. e.g. if your sources are in /home/taimoor/testApp/src, you can do following:
(gdb) directory /home/taimoor/testApp/src
This is my first time of trying to develop with C programming language. I tried installing codeblock on my window 8 operating system, but whenever I run the codeblock program I get this error in the image below
I installed codeblock hopping that it would install the compiler alongside, but I was disappointed. I do not know how to install the standalone compiler, I checked it up online, but I really do not know from where to start, and I do not know if the problem is with my system. I would appreciate help on how to make my codeblock work properly or any other suggestions. Thanks all.
When running CB for the first time, you are prompted with a "Compiler auto-detection" dialog/window.
It looks like you chose the WRONG COMPILER -> GCC for MSP430 micro controller!
Correct that to GCC/MinGW
EDIT - 1: Its usually the first option on the "Compiler auto-detection" dialog
EDIT - 2
I think you may also have selected the wrong compiler for your CB project
For C project, Follow these steps:-
Create a new project -> Console application for C/C++,
Skip the first page, click next
Provide a title & path, click next
at compiler selection screen, select "GNU GCC Compiler" instead of "GNU GCC Compiler for MSP430"
The compiler might not be included in the Code::Blocks you downloaded (if you got codeblocks-12.11-setup.exe). There's another downloadable binary (codeblocks-12.11mingw-setup.exe) that includes the MinGW environment with the GNU GCC compiler. You might want to try that one.
Step-1 : Visit www.mingw.org/
Step-2 : Download and install all package.(Specially mark the the file starting from mingw)
Step-3 : Goto to installation and Apply Changes.
Step-4 : Now open your code block
Step-5 : Goto to Setting->Compiler
Step-6 : Now click toolchain executable AND SELECT GNU GCC COMPILER
Step-7: Click autodetect and then OK
I hope this will definitely work out, All the best
Just goto setting > compiler and click on "restore default" . Then yes and ok .Done . I think it will never occur the error.
I'm running Mathematica 8 on a MacOSX, trying to compile even the simplest program to C. Anything having to do with C simply doesn't work in Mathematica. I have GCC 4.2 installed; I've even reinstalled it multiple times with XCode. Here's what I'm doing and the errors I'm getting:
First, I always evaluate the command
Needs["CCompilerDriver`"]
If I set the compilation target to C,
c = Compile[ {{x}}, x^2 + Sin[x^2], CompilationTarget -> "C"];
I get an error that reads: Compile::nogen : A library could not be created from the compiled function.
If I try to create a library,
demoFile = FileNameJoin[{$CCompilerDirectory,"SystemFiles","CSource","createDLL_demo.c"}];
lib = CreateLibrary[{demoFile},"testLibrary"]
I get an message $Failed. Wolfram says that this is because I don't have a C compiler installed. I find that hard to believe because when I run
CCompilers[]
It tells me that I've got GCC installed: {{"Name" -> "GCC",
"Compiler" -> CCompilerDriver'GCCCompiler`GCCCompiler,
"CompilerInstallation" -> "/usr/bin", "CompilerName" -> Automatic}}
What's more, terminal says I have GCC installed too!! Any help would be appreciated. I'd really like to compile Mathematica to C.
In this answer I'll collect some debugging steps for similar problems, for future reference. Feel free to edit/improve them.
If compiling to C code does not work from Mathematica 8,
Check that you have a supported C compiler installed and it works (the obvious).
Note that the compiler does not necessarily have to be in the PATH, at least on Windows/Visual Studio it doesn't.
Check that Mathematica recognizes the compiler
<< CCompilerDriver`
CCompilers[]
will list the compilers known to Mathematica.
Check what commands Mathematica executes to compile the generated C code:
Compiler`$CCompilerOptions = {"ShellCommandFunction" -> Print};
Compile[{{x}}, x^2, CompilationTarget -> "C"];
Note that with "ShellCommandFunction" -> Print the commands will not be executed, so you'll need to re-set Compiler`$CCompilerOptions to {} after this step is complete to allow command execution again.
Check the output/errors from the compiler:
Compiler`$CCompilerOptions = {"ShellOutputFunction" -> Print};
Compile[{{x}}, x^2, CompilationTarget -> "C"];
These last two steps will hopefully give you enough clues to proceed. With this information you can check if the correct library / include paths are passed to the compiler (in the case of gcc/icc, look at the -L option which specifies library paths and the -I option which specifies include paths). Then check if the required include and library files are present at those paths.
If you get Compile::nogen, you can see the compiler output by setting ShellOutputFunction->Print right in the Compile expression:
c = Compile[ {{x}}, x^2 + Sin[x^2],
CompilationTarget -> {"C", "ShellOutputFunction"->Print}];
In general, this is how you can pass options to the underlying CreateLibrary call, by changing CompilationTarget->"C" to CompilationTarget->{"C", options}. Setting Compiler`$CCompilerOptions works too, but this technique has the advantage of not setting a global variable.
It is a shame that the only error you are seeing is $Failed, that's not terribly helpful; I wonder if perhaps there are some file or directory permissions problems?
I'm running on linux not Mac so I am not sure if my setup is "close enough" or not. On my machine your Compile command succeeds and generates a file .Mathematica/ApplicationData/CCompilerDriver/BuildFolder/blackie-desktop-5077/compiledFunction1.so in my home directory. Is there any way you can find a .Mathematica directory associated with your userid, and see if it exists and is writeable by mathematica?
Also, you could check to see if "gcc" is or is not being accessed by checking the file access time of /usr/bin/gcc before and after your call to Compile. From an operating system shell you can do ls -lu /usr/bin/gcc or from Mathematica perhaps Import["!ls -lu /usr/bin/gcc", "Text"]