When I try to load a .dll then the application first try to load the .dll from their local folder, if it is not there they try to load it using the %PATH% environment variable.
I don't mind if the OS is doing any other searches, but I am interested in the order of the search in the %PATH% environment variable.
Now, let's assume I have two versions of theis dll, and both pathes of those dlls are in the %PATH% environment variable.
Am I guaranteed that the first path that is containing the .dll in the %PATH% environment variable, is the path which the .dll will be loaded from?
10x.
There is exact order in which DLL is searched.
Checkout this:
http://msdn.microsoft.com/en-us/library/7d83bc18%28v=vs.80%29.aspx
http://msdn.microsoft.com/en-us/library/windows/desktop/ms682586%28v=vs.85%29.aspx
UPDATE:
Windows will search in order as they appears in PATH variable.Please note, that full PATH variable consist from 2 parts:
System : HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Environment\PATH
Then is appended current user's PATH : HKEY_CURRENT_USER\Environment\PATH
Related
I am trying to link a dll to a vba project and I am going nut 'cause it fails to find it even if I am 100% sure of the path (I pasted 100 times the path from the exact position).
I called
Private Declare Function IMB_connect _
Lib "C:\Users\Andrea.GIORDANO\Desktop\API\bin_dynamic\API.dll" _
(ByVal n As String) As Long
But it continues to return me an error 53: File not found.
I don't get what would be the problem that seems so silly...
I tried with all kind of slashes '\', '\', '/', '//': no success.
FYI I linked the same exact dll within a c++ project and in that case worked well so I believe the dll itself is fine...
Your dll is probably dependent on other dlls. You can use Dependency Walker to get the full list of the dependent dlls.
The dependent dlls must be in one of the following (from msdn):
The directory from which the application loaded.
The system directory. Use the GetSystemDirectory function to get the
path of this directory.
The 16-bit system directory. There is no function that obtains the
path of this directory, but it is searched.
The Windows directory. Use the GetWindowsDirectory function to get
the path of this directory.
The current directory.
The directories that are listed in the PATH environment variable.
Note that this does not include the per-application path specified
by the App Paths registry key. The App Paths key is not used when
computing the DLL search path.
If you are running a VBA project, probably Excel.exe is loading your code. This means the dependent dlls of your API.dll must be in one of the directories in the quote above.
Please note that placing dlls in the system directory could affect the functionality of other applications in the system. (read about dll hell).
I am installing a package manually on my own system because I need to make some changes to it that aren't available in the basic version in my package manager. I also am trying to keep packages installed locally if possible, so I'm installing it with prefix=$HOME/.local instead of the more common prefix=/usr/local.
When I do this, I have no problem executing the program from my terminal, because I added ~/.local/bin to my PATH and the package was installed with relative paths to its shared libraries (i.e. ~/.local/lib/<package>). Executing from the command line is no problem, but I want to be able to access it from the favorites menu in gnome, and for that I need to make use of the <package>.desktop file.
I could hard-code the path to the executable in the .desktop file itself, but when I pull a later version down and re-install it, I'll have to redo those steps. I was wondering if there's a way to avoid that.
I've tried symlinking the executable to a directory where .desktop files do have included in their path, and the application is correctly treated as a GUI option, but launching the executable results in an error trying to find a shared library. I think this has to do with how cmake handles rpaths, which to my understanding is a way of relatively linking executables with their required libraries.
I think what I want to do is have PATH inside a .desktop file include ~/.local/bin, without changing the .desktop file itself. Can I alter the 'default' path used in accessing a .desktop file?
The answer to my question was found in the Archwiki:
Specifically, I needed to add ~/.local/bin to my path in ~/.xinitrc. Now my graphical programs work as expected.
I created one .dll(Dynamic link library). Using this library I want create executable file.
But I want to provide absolute path for .dll to link with .exe. So when I execute .exe it links with .dll.
I don't want to set PATH(environment variable), don't want to put .dll into system directory or into same directory within executable.
I know that it is possible into linux using -rpath option.
I am new to windows. I try to find rpath equal option in window, but I failed.
I'm running a java application that we distribute as a server-side system. I'm trying to write a launcher ("write" is somewhat of an overstatement here, I'm basically just copying the Java.exe file so that we can get the desired name in the process explorer of windows). This exe is in our bin/ directory of our application file tree.
Now, we also have a jre/ directory in our file tree, which is where Java.exe actually resides (we ship our product with the Java environment). When I use Java.exe as the launcher, which is located in \jre\jre1.6.0_21\bin, or if I place the copy (call this exectuable 'Orange.exe') I made in this directory, it works just fine. But, if I put my 'Orange.exe' in the bin\ directory, then I get the following error:
Error: no 'server' JVM at 'C:\Program Files\Java\jre6\bin\server\jvm.dll'
I think I understand what is happening here - I want to use the server version of the jvm.dll file, which is in our jre directory. The problem is, I don't understand WHY it doesn't look in the jre\jre1.6.0_21 directory in my application path. I've set my JAVA_HOME environment variable to this location. It seems like it's defaulting to another, system-wide expected location.
Does anyone know how I can change this, so that it looks in my application-provided java environment directory? Ideally, this will be an environment variable, as I need to call this application with parameters using a batch file.
There is a little trick to get the server JVM up and running:
Copy "server" folder from the JDK's JRE's bin folder example: C:\Program Files\Java\jdk1.6.0\jre\bin\server
Paste the "server" folder to JRE's bin folder example: C:\Program Files\Java\jre1.6.0\bin
Done
See official readme for details.
I've just been struggling with this same problem in Eclipse and I noted that as suggested by the answer above the JBoss site has a thread on this issue saying the same as the answer above to copy files from the jdk to the jre folder.
I noticed that you can avoid having to do this if you define the runtime to be the jdk when you create the server. I didn't find how to edit an existing server though.
AFAIK, the JRE usually doesn't ship with a server VM (only the client VM). If you really need the server VM, you have to use the JDK installation.
See Oracle Java for Developers Download page for JRE's with Server VM.
I had the same problem here but, in my case, I just had not properly update the JAVA_HOME and my PATH for my recently installed JDK.
I just updated it to my new JDK location and the server started just fine.
Windows looks for DLLs in LIBPATH environment variable.
And make sure your 1.6.0_21 is somewhere first in PATH.
I solved the same problem by setting the JAVA_HOME path to C:\Program Files (x86)\Java\jre1.8.0_131\bin
The easiest fix is simply to copy the contents of client folder inside bin and put in a newly created folder 'server' inside bin.
Copy from C:\Program Files (x86)\Java\jre1.8.0_261\bin\client
Paste in C:\Program Files (x86)\Java\jre1.8.0_261\bin\server
*server is the new folder
Make sure that server/jvm.dll file must be there when we are trying to run servers like servicemix.
Copy "server" folder from the JDK's JRE's bin folder example: C:\Program Files\Java\jdk1.6.0\jre\bin\server
Paste the "server" folder to JRE's bin folder example: C:\Program Files\Java\jre1.6.0\bin
I paced problem, I went through above..That's working fine.
Thanks!
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