Questions tagged [c++]
C++ is a general-purpose programming language.
790
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How do I install mysql-dev for server?
I am working on a server plugin for MySQL v8.0 (as well as a legacy plugin for v5.7) and I need to install the correct header files. I've looked around the internet and all I can find is ...
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When testing my snaptd start, it comes out as Transport endpoint is not connected
root@DESKTOP-O8V2BMI:~# sudo service snaptd start
Failed to start snaptd.service: Transport endpoint is not connected
See system logs and 'systemctl status snaptd.service' for details.
root@DESKTOP-...
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0
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openauto compiling error
the link of error pic
/usr/include/c++/9/ext/new_allocator.h: In instantiation of ‘void __gnu_cxx::new_allocator<_Tp>::construct(_Up*, _Args&& ...) [with _Up = f1x::openauto::autoapp::...
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Cin Function in xeus-cling in ubuntu
the xeus-cling functions well for output but it is not providing any input box.
like this so how can i try to run the c++ so that it can take input also
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1
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How to install `g++12` on Ubuntu 20.04.6?
How can I install g++12 on Ubuntu 20.04.6?
I tried a few ways on google but none seems to work.
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#include <QtWidgets>: no such file or directory
Please don't crucify me. ChatGPT or Google did nothing, so here I am. Basically, I cannot use QtWidgets in my C++ code (for some reason).
The problem: When I include the header in C++, I get this ...
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0
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1
answer
488
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Eclipse Build: undefined reference to `lstat@GLIBC_2.33'
Im porting a command line application from windows to linux.
This application uses some 3rd Party closed source libraries.
Using one such library (with a .so file) i get a number of linker errors:
...
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4
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224
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How to detect events like Sleep/Wake in linux
I am wondering if there is any way to detect system wide events under linux such as:
sleep
wakeup
I need this for a project where i programmatically react to such events, but i am uncertain how and ...
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1
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58
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How to run this C++ code in ubuntu?
I have compiled this code: https://github.com/vbdaga/Rabbit-Cipher/blob/master/rabbit.cpp
with g++ rabbit.cpp -o Rabbit but there are nowhere instructions on how to pass the arguments. I see only ...
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unable to compile anything after installing cpr library #
sudo g++ -o /usr/local/bin/t1 '/home/ubuntu/Desktop/test1.cpp'
I am encountering an error while attempting to compile any cpp file, regardless of which one it is. The error message reads:
"as: ...
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461
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How to install glibmm-2.68 on Ubuntu 22.04
I am trying to install GTK4/GTKMM4 for C++ on Ubuntu 22.04 but I am stuck on step 3, possibly step 2.
I am following these instructions:
https://terminalroot.com/how-to-install-gtkmm-4-on-ubuntu-2204/
...
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1
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3k
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ld.lld: error: unable to find library -lstdc++
CMake is complaining that I don't have a working c++ compiled because of the error:
ld.lld: error: unable to find library -lstdc++
I've narrowed it down the following:
Given the program int main(){...
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2
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0
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199
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Is there any way to ensure that few symbols of static library get definitely loaded into .so file?
We have a huge amount of cpp files and taking a piece of code where we need some clarification regarding that. As we have cpp files we compile those into multiple static libraries and those result ...
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2
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2k
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g++ -- Undefined Reference to main in 86_64-linux-gnu/Scrt1.o:
I am trying to compile a simple C++ Hello World program to test my environment, however, whenever I try, I get this Error:
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/11/../../../x86_64-linux-gnu/Scrt1....
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Why does accessing thread-local-storage (TLS) in library loaded by statically linked dlopen segfault?
I have an exe linked with gcc -static that uses dlopen to load a shared library. The library tries to access a variable in thread-local-storage (TLS). Running the application segfaults when we attempt ...
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1
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STDIN redirection issue in ubuntu 20 (works in ubuntu 18)
I have a script that runs my application (c++) with STDIN redirected from a fifo and redirects STDOUT to a file.
The following code runs just fine on ubuntu 18:
./my_app 0</home/user/pipe 1> log....
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1
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635
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How to make g++ use the C++20 language standard when compiling from code-blocks in Ubuntu 22.04
Just started learning c++ and it is recommended to compile code using the c++20 standard and use code::blocks as the editor.
I checked the man pages of g++ and it is using c++17. I am using code::...
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1
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Why does c++ app launched from the Netbeans use Netbeans install dir?
When I run a simple application that uses a library, Ogre3D in my case, from NetBeans, it breaks with the following message:
Error occurred during execution: InternalErrorException:
Could not load ...
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1
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1
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1k
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Considerations when upgrading Ubuntu from 18.04 to 22.04 -- software development POV
I have been using Ubuntu 18.04 LTS for over three years now and have been considering moving to newer LTS versions for some time. However, the thought of working software breaking or requiring changes ...
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71
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OpenCV imgproc not found
i am trying to compile a OpenCV Application for an ARMs target.
I crosscompiled all the libraries but when i try to compile my code:
#include<opencv2/imgcodecs.hpp>
#include<opencv2/highgui....
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0
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28
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Why my CPU frequencies high but application performance is poor
I have two similar raspberry pi running Ubuntu with little difference in their configuration. I am trying to monitor their performance for running my application. So I am running my app on both ...
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Identifier cout is undefined
I am compiling below code with GCC-12 compiler on Ubuntu 22.04 LTS. I have 2 different versions of GCC installed on my machine 11 and 12.
#include <iostream>
using namespace std;
int main() {
...
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Some of my applications broke after a software update
I really hate to be that kind of guy, but I have struggled with this for a couple of days and its stressing me really out. I would say that I am fairly knowledgeable about technical things and not ...
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62
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Utility to detect defect C/C++ compiled/object file
Is there a Linux utility to detect a defect C/C++ compiled/object file interrupted amidst its compilation progress ?
How its simplest usage ?
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Cannot build native apps after upgrading to 22.04 from 20
It seems that I get stuck going down a rabbit hole when I try to build anything depending on ffmpeg, avlib, and gstreamer since switching to ubuntu 22; its incredibly frustrating and I wonder if the ...
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2
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Cannot build darling
I was trying to install darling on Ubuntu 22.04.2 LTS. When I run the following command:
:~/darling/build$ cmake ..
The following error occured:
-- Detecting CXX compiler ABI info
-- Detecting CXX ...
1
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1
answer
264
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Syntax error in object.h file from python3.10-dev package
I am writing a code to edit Sqlite database from c++ and then using PyBind11 to use the program with python. I installed PyBind11, built it till here no issue but when I am building the code it shows ...
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334
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Building C++ program with i2c-dev lib
I have been trying to build a C++ program using the i2c-dev.h library on Ubuntu Core 22.04.02 LTS, so I can read and write I2C packets. But I can't get my program to build correctly. I tried including ...
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430
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Vulkan MAILBOX present mode
Does Vulkan MAILBOX Present mode exist on the NVIDIA driver for linux?
Using latest proprietary driver 525.
Computer Alienware with RTX 3060
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2
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clang++ cannot find iostream
Here is a simple code :
#include <iostream>
#include <algorithm>
#include <vector>
#include <functional>
#include <iterator>
#include <iomanip>
#include <cmath&...
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647
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cc: fatal error: -fuse-linker-plugin, but liblto_plugin.so not found
Hello to everyone and happy new 2023.
This question starts with a problem strictly related to the FreeBSD world,but ends with a problem strictly related to the Linux world. You will see,so don't start ...
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Understanding libc++ and libstdc++ packages on Ubuntu
When searching on apt, I noticed that there're lots of similar libstdc++ packages:
libc++-1
LLVM C++ Standard library
libc++-1-11
libc++-1-12
...
LLVM C++ Standard library
libc++-dev
LLVM C++ ...
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248
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Imagemagick C and C++ libraries can't be installed at same time on Ubuntu 22.04
apt install libmagickwand-dev graphicsmagick-libmagick-dev-compat
Issue: apt won't install both packages at the same time. apt removes one when I install the other. If I attempt to install both at ...
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ncurses installed... but won't compile code
I've recently returned to Xubuntu 22.04 after a brief stint on Fedora.
Under Fedora, I seemed to be able to install ncurses okay.
I could then simply write code and compile with commands like:
$gcc -...
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425
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Error C++ compiling Ubuntu 20.04 LTS
c++: error: unrecognized command line option ‘-GR’; did you mean ‘-R’?
c++: error: unrecognized command line option ‘-EHsc’
c++: error: unrecognized command line option ‘-Zm200’
c++: error: ...
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0
answers
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Snap CLion IDE exits on run
I installed snap package of CLion IDE, when I launch it from ULauncher it exits upon clicking run, however when I run it from the terminal it seems to work just fine, what could be the cause of this?
...
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Running aplications that require the c++ redistributable for Visual Studio 2015
I am using Ubuntu 22.04 .
I can't figure out how to run applications that require the C++ redistributable for Visual Studio 2015 to run.
What do I need to do to run them? I have tried wine and it didn'...
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0
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141
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Error running cuda with opengl
I am trying to compile julia example code using the command "nvcc -lglut julia.cu -o julia" and getting the following error
Starting build...
/usr/bin/ld: /tmp/tmpxft_00004758_00000000-...
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1
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Compiling C++20 program that uses modules with Ubuntu 22.04
I'm trying to run a simple program:
import <iostream>;
int main()
{
std::cout << "Hello, World!" << std::endl;
return 0;
}
I've checked, and supposedly I've already have ...
0
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1
answer
251
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Weird symbols while trying to move the cursor in text written in console
i am new to Ubuntu.
I was running a c++ executable but i encountered this problem, the program asks for a written input but when i try to move the cursor with the arrow keys through the thing i wrote, ...
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0
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83
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upgrading code to a higher version of cpp
Started my carrier as c++ coder recently. I am working on a project to create docker image of my project. During compilation I am getting below Error continuously, tried multiple ways. the current ...
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How to install the program gr-gsm?
I am trying to install a program named gr-gsm on my system. So, I followed the official guide from here but when I entered the command cmake .. (while following the installation guide) it returns this ...
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586
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API for Telnet Client in C++
My apologies if this is not the right place to ask my question. I am communicating with a telnet server on my local network. Please note that, the communication is working fine using the telnet ...
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520
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How to link to different version of a shared object (.so) on different version of Ubuntu?
I have developed a program which links to ncurses-dev and I made a .deb installer for it.
On Ubuntu 18, my main binary links to libncurses.so.5, but on Ubuntu 20, libncurses.so.6 exists instead of ...
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4
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GLIBCXX 3.4.30 not found in conda environment
I am installing a package with pip in my conda environment and I keep getting this error:
ImportError: /home/anavani/anaconda3/envs/dmcgb/bin/../lib/libstdc++.so.6: version `GLIBCXX_3.4.30' not found (...
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Can't find -lGL from /usr/lib/ld
Whenever I try to compile Code::Blocks' C++ projects I get this error:
/usr/bin/ld: cannot find -lGL
I've tried installing following packages in accordance to other solutions to this problem:
fglrx-...
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0
answers
430
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/usr/bin/ld: cannot find -lopenblas collect2: error: ld returned 1 exit status
I am trying to compile a C++ program that uses Armadillo C++ library for linear algebra & scientific computing. When I give command :
g++ gen_data.cpp -o test -DARMA_DONT_USE_WRAPPER -lopenblas -...
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1
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271
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Output not showing in my ubuntu while compiling c
While compiling my C code in sublime-text in my Ubuntu The output is not shown.enter image description here
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1k
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VS Code CPP Extension hogs up the CPU constantly / Infinite loop in the Intellisense process
I'm working with vs code and it's cpp extension under Ubuntu 18.04.
However after starting the app one CPU is under full load, although I'm not doing anything. The CPU fan is driving me crazy!
The ...
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2
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C++ threads fail on ubuntu 22.04
Given this bug.cpp file:
#include <thread>
int main() {
auto t = std::thread([] {});
t.join();
return 0;
}
And this docker container:
FROM ubuntu:22.04
RUN sed -i -e 's/^APT/# APT/' -e 's/...
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