I am comparatively new to Linux. I am running Fedora 64 bit at my PC. I am having difficulty setting up ddd with bashdb. I am able to install it using yum but when I run it for bashdb, the software environment for ddd comes up but it keeps on working for infinite time, unless I manually kill it.
I used google to know what the problem is and came to know many people are having same problem, when using linux's package installers. It has bugs so I have to compile the latest source and install it manually. So I downloaded the source and tried to ./configure, it produced the following error and exited:
configure: error: Cannot find termcap compatible library
I searched again and found out I need termcap library at my PC, here:
https://lists.gnu.org/archive/html/bug-ddd/2013-01/msg00004.html
http://www.cplusplus.com/forum/unices/58299/
I used yum to install ncurses but found out it is already installed. Used locate to find the path of ncurses and passed it to configure using following commands:
sudo ./configure --with-termlib-libraries=/lib/libncurses.so.5
sudo ./configure --with-termlib-libraries=/lib/libncurses.so.5.9
Still, I am having the same error.
It is very frustrating because I have tried almost everything I found on internet. May be, there is a minor point that I am overlooking due to my inexperience. My main concern is to be able to debug complex bash scripts that I am going to develop in near future. I am not very comfortable with command line debugging i.e. without an interface. Any tips/advice that, can get me going with debugging with some other application may be, are also welcomed
I installed the ncurses development package to get past this problem:
sudo yum install ncurses-devel*
Related
I'm trying to compile a Go app for linux/arm and keep running into problems on my Ubuntu machine. When I run GOOS=linux GOARCH=arm go build in my source directory, I get tons of erorrs that are variations of:
# github.com/huin/mqtt
gccgo: error: unrecognized command line option `-marm`
Running gccgo --help informs me that options starting with -g, -f -m (and others) will be passed on to any sub-processes started by gccgo, so I don't know which process it's sending -marm to.
Any clues? Ubuntu 14.10 LTS, 64bit
So thanks to a clue by Dean, I've worked out the issue and solved it.
The issue was caused by me installing Go via apt-get, then removing it (via apt-get), then installing Go from the golang website. There were still files left over from the first install, which were probably older versions and therefore didn't have support for the -marm flag.
I was going to wipe my dev machine anyway, so I did, installed Ubuntu again, installed Go from the website (not via apt-get) and everything worked first time. If you don't want to wipe your machine, then just make sure to look around to see if there are version conflicts.
I've been stung by this sort of thing before (when installing node.js via apt-get, realising it was many versions out of date, then removing, and installing node.js via source), so if anyone is reading this, be careful when installing software via apt-get, then upgrading, as you might have similar version issues like I did!
I have never used Linux OS. Want to know how we can start compiling Apache,Mysql and php in Linux and is it necessary to configure it.
I tried doing it by using cd/user/scr/httpd_2.0.09
Do we need to downloads the set up from google
Do yourself a favour and don't try to compile your own webserver etc. ;)
Aside from the fact that it's a lot of work to set up the tools for compiling, resolve dependencies, and debug possible errors, you will have to do the same procedure with every tiny update – instead of simply getting a new version via your package manager.
If you use a common distribution, install the packages required for the so-called LAMP stack, and configure them properly. That will be hard enough for starters.
If you're using Ubuntu, have a look here: https://help.ubuntu.com/community/ApacheMySQLPHP
Actually installing binaries from repositories is less painful than compiling, but if you really want so, you may install Gentoo or other source-based distributive. I've simply described compilation of MySQL 5.5 in my blog.
To compile packages on Debian based systems you need to install build-essential and cmake package (and maybe some other *-dev packages, which appears to be missing during source configure).
For example to compile MySQL 5.5 it is enough to run:
cmake . #yep, with dot. Will prepare your source according to your system
make
make install #will install compiled binaries to system
I really need help getting started. I want to make a basic program (in C) that can read a bluetooth socket and print whatever it is sent. I tried to get Bluez (followed this:http://hackgnar.com/article/installing-the-latest-bluez-software-in-ubuntu-12/ it went great until the "make" at the end and then no luck, would not make and example program could not find bluetooth/bluetooth.h).
I guess my hopeful options are:
some one can tell me what I'm missing with Bluez's install and possibly how to get started with it (compiling etc)
Alternative to bluez? Laptop could do bluetooth file transfers before I installed bluez so do I even need it for this application?
Any sort of comprehensive hello world (download, install, example, compile and run)
I have a strong programming background, just not in Linux (you can gloss over the C stuff but please not the Linux/Ubuntu stuff).
Thanks!
I can only guess that you have an old version of the kernel, or one of the required libraries. Try updating your linux installation (e.g. to a 3.5.x kernel or thereabouts).
I had no problem completing the steps you took.
If you are looking for example programs, you can always look at the simpler tools.
On my ubuntu box I'd do e.g.
sudo apt-get build-dep bluez-tools
apt-get source --compile bluez-tools
which gets all build dependencies, sources and builds the bluez-tools package on your system.
Really annoying issue here. On Linux Mint OS. Every so often, I'll get this error when running OpenCV code:
HIGHGUI ERROR: V4L/V4L2: VIDIOC_S_CROP
OpenCV Error: Unspecified error (The function is not implemented. Rebuild the library with Windows, GTK+ 2.x or Carbon support. If you are on Ubuntu or Debian, install libgtk2.0-dev and pkg-config, then re-run cmake or configure script) in cvNamedWindow, file /home/ravi/Desktop/opencv/OpenCV-2.1.0/src/highgui/window.cpp, line 180
terminate called after throwing an instance of 'cv::Exception'
what(): /home/ravi/Desktop/opencv/OpenCV-2.1.0/src/highgui/window.cpp:180: error: (-2) The function is not implemented. Rebuild the library with Windows, GTK+ 2.x or Carbon support. If you are on Ubuntu or Debian, install libgtk2.0-dev and pkg-config, then re-run cmake or configure script in function cvNamedWindow
The way to fix this, I've found, it to do the following:
cd OpenCV/
cd build/
cmake ..
make
sudo make install
sudo ldconfig
<restart computer>
Then I'll come back, start running my OpenCV code again, and it'll be fine. But then a few hours later, or possibly between turning cpu on/off, I'll be back to the same stupid error!
Does anyone have any idea what's going on here and how I can prevent this? It's frustrating as hell.
It sounds like a general critical error in the program code. Is there a specific task that is done when the error occurs? You might want to use strace to get the output of the program as it runs or enable application memory dumps for the user you are running the process as. This would be passed to the developer for debugging and inspection.
I believe the problem was solved by paying attention to where my USB camera was actually located in /dev/. Giving a faulty path to the get video source functions causes this type of error; restarting my computer occasionally shifted which /dev/video# my device was attached to.
Please do ls /dev/vid* to find out if you're using the right video source!
I just installed Cygwin and can launch a bash shell from windows, do ls, emacs, vi , etc. However, when I do g++ it says command not found.
I thought g++ was installed by default in Cygwin? If that's not the case, what are the exact categories under which I can add g++ as a package to my cygwin?
Did you install the Devel packages?
I would suggest you read this tutorial to get up and running.
It's a good idea to just install everything with CygWin. When you run setup, just click on the circular icon at the top level until it reads "Full" rather then "Default" - that will install all the packages.
I've sometimes had trouble installing single packages due to dependencies but a full install is not affected by that same problem.
Disk space is cheap, your time spent trying to figure out why things don't work is not.