I am trying to use CMake and I need to add an environment variable GSL_ROOT_DIR in windows 7, so that %GSL_ROOT_DIR%\include contains the GSL header files and %GSL_ROOT_DIR%\lib contains the GSL libraries.
Could you tell me exactly how can I do that?
Press the start button. (alternatively: windows key + r, then sysdm.cpl)
right click "Computer" then click properties.
Click advanced system settings.
Click Environment variables.
Add the variable you need + the correct path.
EDIT:
point %GSL_ROOT_DIR% to the base directory of where you extracted the GSL library. I.e. if you downloaded the developer files from here and extracted it to c:\libs\gsl\ then your %GSL_ROOT_DIR% should be "C:\libs\gsl" (if you look at the zip file, it contains both an include, and a lib folder).
Related
I am using Windows XP. I am trying to add a new library to Dev-C++. For that, I need to install MinGW and then I have been instructed to add the bin directory of MinGW to my system path. But, I don’t know how to do it. Please guide me (step by step) to add this to my system path.
To change the path on Windows XP, follow these instructions, and then add the directory where you install MinGW plus bin. Example: if you install MinGW in C:\ then you have to add C:\mingw\bin to your path
Just for completeness here are the steps shown on the link:
From the desktop, right-click My Computer and click Properties.
In the System Properties window, click on the Advanced tab.
In the Advanced section, click the Environment Variables button.
Finally, in the Environment Variables window, highlight the Path variable in the Systems Variable section and click the Edit button. Add or modify the path lines with the paths you wish the computer to access. Each different directory is separated with a semicolon as shown below.
C:\Program Files;C:\Winnt;C:\Winnt\System32;c:\mingw\bin
I have looked all over the internet for installation instructions but could not find one that actually worked. I have downloaded the MinGW-Get application as stated in many websites, but have no idea how to use it. I did find a website with the following instructions:
HOW TO INSTALL:
Install an ide on your windows machine, I’ll use the simple Dev-Cpp.
Download this zip containing the files you’ll need.
Create a folder called pdcurses and another one called include, inside
of it.
Extract panel.h and curses.h in the include fold.
Extract the .dll file in the pdcurses one.
Now open your ide and set the 32-bit version compiler as the default
one.
Create a new project, set it up.
On the lefty Treeview, right click on the project icon -> project
options
Go to -> Parameters tab-> Linker -> insert in its box the path to the
.dll file you extracted before
Go to -> Files/folders tab
Here you’ll see three inner tabs named: Libraries/Includes/resources
folders; inside each of them you have to insert the path to the
include folder you created before.
Source: https://hastalafiesta.altervista.org/setup-pdcurses-windows-devcpp/
However, I could not find the .dll or a library file in the PDCurses folder I extracted from the .zip file I downloaded from https://sourceforge.net/projects/pdcurses/files/pdcurses/3.4/pdc34dllw.zip/download (as stated in the fifth step). I just got started with C++ and libraries and would appreciate it if anyone could provide me some guidance or any useful links.
Normally when I use an API I download the binary containing the JAR which I then add to the classpath. I want to try Curve API but there's no binary (and hence no JARs in the download). I'm using Eclipse and I have read that you can just add the zip file, but I tried this and it didn't work.
Have you read the README.txt in the zip file with Curve API? Let me quote it:
In the src directory, there is a makejar.bat file. This file will
compile the nested Java files and create a Jar file called Capi.jar.
Compilation requires Java 1.2 or higher. After the Jar file is
created, add it to the classpath. Note: CAPI comes with MESP (Math
Expression String Parser).
If you use Windows Vista or 7 or 8, navigate to the folder with makejar.bat, hold Shift and right-click at an empty spot, and select "Open Command Window Here". It will launch console window with cmd.exe; you should be able to see a line like X:\Full\Path\To\The\Folder> in it.
If you use Windows XP or lower, then press Start button, select Run, and type cmd.exeEnter. Then enter cd "X:\Full\Path\To\The\Folder" (the path should be in quotes), and press Enter. If that folder is on the other drive than your current one (shown at the beginning of the prompt), then also type in the letter of the drive where that folder is located, the symbol :, and press Enter.
So much for opening the command window! Now type in makejar.batEnter. I predict that you will see an awful lot of 'javac' is not recognized as an internal or external command, operable program or batch file. lines. If that's so, then please locate javac.exe on your computer somehow—I suggest using Windows Search. After you locate it, go to the folder where it is; click on the address bar of that folder and copy the path to the buffer. Then switch back to the command window, type set PATH=", right-click and chose "Paste", type in ";%PATH%"Enter. After that, try makejar.batEnter—now it should work. If it does, you may also run makeapi.bat which will generate HTML documentation.
I am wondering how do I allow my OpenCV project exe file to run on other Windows 7 machines without modifying other pcs. It runs on mine as I have all the libs installed. Can I embed the necessary files into the folder with the exe file?
You should create a folder ( ...project/libs, for example), put the libraries in it and in VisualStudio (I guess you are using VS), in Configuration Properties -> Linker -> General -> Additional Libraries Directories set a relative path this way:
"$(SolutionDir)\libs"
Where $(SolutionDir) is the path of your project. The environmet variable can be created in Control Panel -> System and Security -> System -> Advanced System Settings -> Environment Variables. Then just click New and add the path and the variable name ( SolutionDir).
You can put all the needed dll's in the same folder as your exe, or put them in a different folder (let's say C:/Programs/OpenCV/bin) and add this path into the System PATH.
To set PATH, go to
My-Computer - Properties, Advanced system settings -> environment variables, and look for Path. Add yours, and do not forget to separate it with a ";".
How do you register a name for a program in the windows run dialog?
For instance typing in "notepad" and pressing enter runs notpad.exe
"photoshop" in my case runs Photoshop CS3
I'm using vb2005.net
Besides the system path, there's also the App Paths in the registry. Visual Studio, for example, doesn't have its main app (devenv.exe) in the PATH, but you can still launch it from the Run dialog.
Available names are enumerated under HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths, with corresponding launch paths as values under each name.
See http://www.tweakxp.com/article36684.aspx for an example of how to add an exe to your App Paths.
This works because those applications have added the directory containing their executable to Window's PATH variable. This variable is used to resolve the locations of any files entered into the run dialog (among other things).
Please see How to set the path in Windows 2000 / Windows XP.
There is no registration, your program .bat, .exe must be within the system path.
If you right-click on "My Computer" ->"Properties"-> "Advanced" then go to the "System Variable". You can edit the "Path" variable to include the location of your executable.
This has nothing to do with "registering" a program. Windows uses the current value of your PATH environment variable, and any executables found in those directories can be executed by simply typing the name into the Windows "Run" box (or command prompt, or anything else that launches executables).
Some programs add their directories to the PATH, others drop an executable (or even a batch file) into a well-known directory that is already part of the PATH, such as the Windows directory.
Add the program's path to your PATH variable.
If you want to do it programmaticly, you can edit (append, not just set) this registry location (in, say, your installer):
HLM\SYSTEM\CurrentControlSet\Control\Session Manager\Environment\Path