Questions tagged [c++]

C++ is a general-purpose programming language.

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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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run visual Studio sln file in ubuntu

I have a project of c++ with .h files which were made in windows visual studio and have .sln file also, Now I want to run the whole project in ubuntu, I actually want to run the .sln file here so that ...
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Xlib XSetWMHints not working as intended on Ubuntu 20.04 LTS [closed]

I am building an application using ROOT (CERN). At some point, I try to set an icon for my application in the taskbar with a function TGX11::SetIconPixmap. However it seems that the underlying ...
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I'm trying to install "libc++" but I have many dependency problems

I was trying to install libc++ and I got this output: https://pastebin.com/P9vkaycR What am I supposed to do to fix this besides following each dependency chain individually (which would probably take ...
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Update system gsettings programmatically in C++

I'm running a service that needs to update the system wide proxy settings on Ubuntu. $ gsettings set org.gnome.system.proxy.http host 'my.proxy.com' $ gsettings set org.gnome.system.proxy.http port ...
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How to git clone (done), Cmake build (almost done) and run a C++ Project in Ubuntu

This is my first day in Ubuntu (20.04.4 LTS) for C++ development. Previously I only used Windows, and find something new to work with. I would appreciate your support. After cloning a github repo, I ...
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I have been trying to make a custom shell with C++. It is working but it doesnot work when Pipe or > are given in the terminal

#include <iostream> #include <cstring> #include <unistd.h> #include <sys/types.h> #include <sys/wait.h> using namespace std; int main() { char exitC[] = "exit&...
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Magick++.h: No such file or directory (Even after installing Magick++)

I am using a WSL Ubuntu terminal. I executed the following command to install Magick++: sudo apt-get install libmagick++-dev After this, I checked to make sure that Magick++.h has been installed or ...
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Executing a C++ code in directories with specific name through bash script

I have a directory, named test, with 10 folders, named folder1, folder2, etc., and each folder has subfolders named trial01, trial02, trial03. Now I have a master C++ file, named mastercfile.cpp, ...
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C++ fmt library not working

Hi guys I'm a C++ beginner and I just found that the fmt lib is really interesting. But I ran into a problem when trying to use it. I used homebrew to install fmt lib brew install fmt .I check the fmt ...
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insmod: ERROR: could not insert module ./gspca_kinect2.ko: Unknown symbol in module

I tried to compile and run the driver "gspca-kinect2" because I want that my kinect 2 is detected as webcam inside obs and skype,but as u can see below,it does not work : marietto@marietto-...
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error in terminal while running C++ program in eclipse

I am trying to run simple "hello world" program in eclipse in ubuntu 20.04 but i am getting error. Before my eclipse was running fine and i was able to run successfully all programs but i ...
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Coding on VS code [closed]

Hello this is my first time to learn C by a book But The code doesn't give output I installed build essential What should I do ? int main() { printf("Hello World!"); }
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Where do software get installed on Linux? What is the difference between /opt and /usr?

I would like to clarify the software application and libraries installation philosophy and best practices in Linux. From my understanding from the Filesystem Hierarchy Standard (FHS), new software ...
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problem in running c++ 17 code

With these two commands sudo apt-get update sudo apt install build-essential I install c++ compiler and it has GCC/g++ version 10,than I install VS-Code and install two extensions code-runner and c++ ...
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Undefined reference to libraries while building

I am trying to install tgs2apng in Ubuntu on WSL. As instructed I installed the 3 libraries- rlottie, libpng and apngasm. However When I run make I get undefined references to rlottie and apngasm Here'...
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How to use .so files

I recently downloaded a SDK (written in C) from a device distributor and try to compile the code. As I do so, the output is /usr/bin/ld: FILE: undefined reference to 'FUNCTION' I assume that some ...
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SDL2 can not initialize sound driver

|Distributor ID:|Ubuntu| |Description:|Ubuntu 21.04| |Release:|21.04| |Codename:|hirsute| I tried to initialize the sound driver but it didn't work. Here's the code: std::cout << ...
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/usr/include/x86_64-linux-gnu/sys contains only broken symbolic links

My O/S is Ubuntu 20.04. The initial problem: I was trying to run a "make" and got errors like: /usr/include/sys/cdefs.h:453:10: fatal error: bits/long-double.h: No such file or directory ...
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problem with making a c++ project with G++

I am trying to build cascade library using G++ 8.3.0. In the documentation they mention that it was tested on G++ 4.7.2. My question is, is it necessary to downgrade to 4.7.2? if so could you please ...
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Capturing login data input by user while logging onto Linux

I am trying to work on this user authentication problem where user enters the login data upon Linux boot, but the authentication takes place through a different connected device for security purposes ...
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Cmake can't find gcc compiler

I have Ubuntu 18.04.6 LTS and I am trying to install and run gcc v8 (a v7 version is the default). I have done: sudo apt-get install build-essential sudo apt-get install gcc-8 To try to get the v8 to ...
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Unable to correct problems, you have held broken packages while installing gcc

i can't install this on my Ubuntu 20.04 LTS :~$ sudo apt install gcc Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be ...
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Unable to correct problems, you have held broken packages. when installing c++ [duplicate]

So I'm trying to install c++ and I keep getting this error sudo apt install g++ Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not ...
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Difference between packages libxml2-dev and libxml2

I have simple C++ application that uses libxml2 library. For this purpose I need to install it. But which package I need to install: sudo apt-get install libxml2 System still complains regarding ...
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How to fix the X Window System error coming when running a c++ GTK program

I am getting an error while running a program written in c++ in GTK. The program stops when this error appear. I am a beginner and i have no idea what to do for this. The error is as follows. (main:...
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Upgrade gcc version in Ubuntu 18,04

I'm running Ubuntu 18.04 in WSL, which I use to compile my c++ programs. I need to write a program that gets the name of all the files in a certain directory and adds them into a vector of strings. ...
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How to build a .deb package for the c++ gtk program

I created a c++ program using gtk and glade. I need to build a .deb package for this program. This program saves data to MySQL database and also it exports data to a excel file using libxlsxwriter ...
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2 votes
1 answer
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Cross compile C/Cpp application for target ARM arch support ubuntu18.04 32-bit, on host machine i.e. ubuntu 18.04 64-bit machine using cross compiler

Trying to achieve the below task Cross compile C/Cpp application for target ARM architechture supports ubuntu 18.04 32-bit on a host machine i.e. ubuntu 18.04 64-bit machine using cross compiler. ...
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Netbeans 12.4 C/C++

I need to build C/C++ projects on Netbeans 12.4 with Ubuntu 18.04. There have been a long list of failures - trying earlier versions of Netbeans and even Eclipse. I can't find a simple tutorial / ...
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How to detect that a C/C++ file is using windows specific stuff

Basically I want to test files/libraries/code in general that wont run on Linux by detecting windows specific includes, program calls, dynamically linked libraries at runtime, anything that isn't ...
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1 answer
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can I install wiring pi libraries on my desktop linux PC?

I have a project I'm working on, that will eventually be a raspberry pi running Ubuntu also, but right now I just want to write code that includes wiringPi.h, and wiringSerial.h I tried installing ...
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bad cmake executable vscode

I've recently freshly installed Ubuntu 20.04, and VSCode, meant for c++. I added the C/C++, CMake and CMake Tools extensions. Then I cloned one of my old github repos for testing and tried to Cmake:...
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Can't compile project in c++, regardless of IDEs

I have been having problems with running c++ programs on ubuntu 20.04. The problem is, that even I write legit code that the compiler can understand, the same error occurs saying that "Error: ...
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-3 votes
1 answer
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I can't run C++ code

I Can't Run Program Error message : Here's the code: #include <iostream> using namespace std; int main() { cout << "C++"; return 0; }
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I Can't Compile C++ Program

When I run the command gcc CCC.Cpp I get this error: CCC.Cpp: file not recognized: file format not recognized Collect2: error: ld returned 1 exit status" This is the content of CCC.Cpp file: #...
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-1 votes
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C++ Undefined reference to a function

I am using ubuntu 16.04 When I try to compile the program with g++ -g main.cpp -o main This is my g++ version g++ --version g++ (Ubuntu 9.3.0-17ubuntu1~20.04) 9.3.0 Copyright (C) 2019 Free Software ...
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1 vote
1 answer
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How can I make the C++ compiler support template for STLin order to install hpctoolkit?

I am trying to install hpctoolkit using Spack. In order to do that, I executed : git clone https://github.com/spack/spack.git cd spack/share/spack source setup-env.sh spack fetch -D hpctoolkit spack ...
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I am getting error about X11 library

when I run cmake build I get this error: CMake Error at cmake/Macros.cmake:296 (message): Missing item in X11_X11_LIB;X11_Xrandr_LIB Call Stack (most recent call first): src/SFML/Window/CMakeLists....
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main.cpp:1:10: fatal error: Sort.h: No such file or directory

I want to write makefile to compile my C++ codes. The tree of my files is this: . ├── include │   └── Sort.h ├── lib │   └── Sort.cpp └── src ├── main.cpp ├── makefile └── obj And this is ...
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Run easy c++ program with Anjuta -> compiler cannot create executables?

I'm currently trying to use Anjuta to get familiar with C++. I tried to run a simple Hello World program in the main.cc-file: #include <iostream> int main() { std::cout << "Hello ...
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Reliable way to find application icons?

I'm creating an app in Qt Creator and C++ that lists all apps on the system by indexing .desktop files from /usr/share/applications and ~/.local/share/applications. In almost every icon path, I don't ...
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1 vote
1 answer
1k views

aarch64-linux-gnu-gcc: error trying to exec 'cc1plus' : execvp: No such file or directory

I am trying to build a C++ file with aarch64-linux-gnu-gcc for Raspberry Pi 3 64 bit and I am running this command : aarch64-linux-gnu-gcc -mcpu=cortex-a53 test.cpp But I am getting this error: ...
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1 vote
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notification from c++ privilege daemon process to all users

I have a c++ privileged daemon process which is running as root. Want to send notification to all the desktop users programmatically using libnotify-dev package.How can it be done in cleaner way.
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How to compile multiple all testbench components of Systemc

I have been trying to simulate all my testbench components of hierarchiral full adder systemc program. Previously, to simulate a simple systemc filenamed(hello_world.cpp) I have used: $ g++ -g -Wall -...
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Alternative for mouseclick function in Linux?

So i got some problem with my window and i decide move to linux. I'm working with some c++ code that required windows.h, so i decide to change some of my code, so it can run in linux. one of my code ...
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Cmake build from source gives problems on make (probably c++14 standard not used)

I just updated my Cmake to the version 3.19 (previously 3.10) from sources. For this I now have two cmake versions the one from before in /usr/bin/cmake and the new one in /usr/local/bin/cmake which ...
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Header file path

I have installed libxml2 on my machine: sudo aptitude install libxml2 But I can't find header files. Where header files are located?
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3 votes
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How to install github.com/ioi/isolate on Ubuntu

I recently tried to make a C++ judge and heard about a tool called "Isolate" (available here): Run program within a sandbox, so that it cannot communicate with the outside world and its ...
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Where did QT install to?

I am trying to set up a qt project in CLION. I installed qt using these commands sudo apt-get install qtcreator and sudo apt-get install qtdeclarative5-dev When you create a qt application in clion ...
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