Questions tagged [cpp]

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Programmatically query last DHCP lease time

I have a buildroot embedded Linux where I change the ethernet port settings (i.e. disabled, static or DHCP) from a C++ program. When switching to DHCP, it would be nice to determine when (i.e. ...
Niko O's user avatar
  • 123
8 votes
3 answers
2k views

Box character doesn't display properly in Linux terminal

I was just writing a C++] program that uses the box characters to display information.  I ran the program on macOS and used the terminal app and it worked fine. When I switched to Debian Linux using ...
sherbit fish's user avatar
2 votes
3 answers
852 views

How to find the icon file linked to an executable?

I am building a window manager and I need to locate the icons related to a running executable for the taskbar. I found the Icon Specifications and was able to locate all the icons in /usr/share/icons/...
Eshy's user avatar
  • 165
1 vote
1 answer
59 views

How to use Imlib2 in a Cmake project?

I have a Cmake project on arch linux and I need to use Imlib2. However, the cmake cannot find the package (see attached screenshot). Usually, this is resolved by installing the dev version of the ...
Eshy's user avatar
  • 165
2 votes
2 answers
185 views

Xlib. How to make XGrabButton not consume click?

First question so please forgive me if I am neglecting a requirement here. I am attempting to build a window manager for arch linux. Currently, I am adding grab events before mapping a window. I have ...
Eshy's user avatar
  • 165
1 vote
1 answer
3k views

GCC and Clang can't compile C++ code

Trying to run command gcc code.cpp -o runthis However it gives me errors in this format: /usr/bin/ld: /tmp/cco6J3Vh.o: warning: relocation against `_ZSt4cout' in read-only section `.text' /usr/bin/ld: ...
itsKia2's user avatar
  • 13
0 votes
2 answers
70 views

SSH session does not get terminated with cpp reboot comand

I have a small cpp application which will reboot the system. This works very well so far. sync(); //need for data safety reboot(RB_AUTOBOOT); Unless you are connected via SSH and run this program on ...
svanschu's user avatar
0 votes
1 answer
287 views

cmake and Installing opencv 4.x on Linux Debian 10 with Kernel 4.19.x

I am finding this info. online for building OpenCV 4.x on their homepage. I have not found a way to compile the samples or examples. Is it possible with cmake to install examples from the OpenCV 4.x ...
De Funct's user avatar
  • 105
3 votes
0 answers
137 views

Preprocess the Linux source code and save to another directory

Suppose I have the entire Linux source code in /tmp/linux-src. After menuconfig I want to do "some kind of gcc -E" where all the preprocessor macros other than #include are expanded so the actual ...
turbocoder's user avatar
0 votes
1 answer
616 views

Getting error while making dash wallet

I just run successfully run the commands ./autogen.sh ./configure Then I get some error while running make The errors is followings Making all in src make[1]: Entering directory '/home/myname/...
salman faris's user avatar
0 votes
2 answers
1k views

header not found even though `PKG_CONFIG_PATH` is set correctly

I've installed a library to ~/.local. The environment variables are set as shown below: $ echo $LD_LIBRARY_PATH /home/saga//.local/lib $ echo $PKG_CONFIG_PATH /home/saga//.local/lib/pkgconfig There'...
saga's user avatar
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1 vote
1 answer
2k views

HDIO_GETGEO and HDIO_GET_IDENTITY in Linux using C++

Can anyone explain the core difference between HDIO_GETGEO and HDIO_GET_IDENTITY? From the Linux documentation and this document titled: Summary of HDIO_ ioctl calls., I know that the former is for ...
Jackzz's user avatar
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1 vote
1 answer
5k views

Installing and compiling log4cpp on Debian

How to install log4cpp framework package stored locally as tar.gz, and which file from that package to use for bulding. I read some articles on internet, but I'm getting stucked at this part: ./...
user avatar
2 votes
2 answers
2k views

Error compiling source code, possibly related to cpp

I am trying to compile some source code however when I enter the "make" command in the terminal it produces an error. From my limited understanding the problem seems to arise when the code attempts to ...
dan's user avatar
  • 23