Windows 8.1 Pro MinGW Gfortran Command Prompt 'not recognized command' error - windows

C:\Users\redacted\Documents\redacted>gfortran hibrac.f -o hibrac.exe
'gfortran' is not recognized as an internal or external command,
operable program or batch file.
https://gcc.gnu.org/wiki/GFortranBinariesWindows seems similar to my problem: gfortran.exe is in C:\Windows\MinGW\bin -- except the solution appears not to apply to Windows 8.1 Pro:
Right click on My Computer, Properties, Advanced Tab, Environment Variables.
Instead I tried: Right click on 'This PC' within File Explorer, Properties, Advanced system settings, Advanced Tab -- and I cannot find an equivalent-looking section that allows me to proceed with the advised solution.
As background information:
I had installed MinGW Installation Manager which installed mingw32-gcc-fortran (together with mingw32-base, -gcc-g++, and -gcc-objc) in the recommended C:\Windows\MinGW folder, without any apparent error message.
Isn't it acceptable -- standard practice -- to have one's code in a folder separate from this MinGW folder? i.e. a subdirectory of my Users\account rather than a subdirectory of MinGW. This isn't the problem, is it? What do I need to do to get it to recognize the gfortran.exe, or call it correctly?
Please tell me what to do to get it working. If it's relevant, I have a Japanese computer with an English language pack installed (it seems to have some gaps, such as some text in the Settings charm or startup/shutdown text being in Japanese).

This looks very much like you have neglected to add C:\MinGW\bin to the effective PATH for the command window, in which you are attempting to run the gfortran command.
Your question isn't entirely specific on this point, (i.e. you could improve the question), but you hint that you were unable to add the appropriate PATH entry to the global environment variables, because you couldn't find the appropriate control panel applet? I know that this is often recommended as part of a MinGW setup, but the installer will not do it for you, because I, as the maintainer of mingw-get, don't consider that to be best practice; much better, IMO, to add it for each specific command window in which you need it to take effect, by running (once, at the start of each command prompt session) the command:
path %PATH%;C:\MinGW\bin
If you prefer, you may create a batch file to do this for you, along with any other initializations you wish to perform, (or better still, use MSYS as the working shell environment, in which case the PATH initialization is taken care of by the shell's own initialization scripts).

Related

How does AutoHotkey determine which executable is launchable with a mere `.exe` name?

In my experience, #f::Run mailmaster will launch mailmaster.exe when pressing #f, but throws when doing #f::Run QQMusic:
I had to provide the full path for QQMusic.exe whereas I didn't have to provide the full path for mailmaster.exe.
According to the documentation:
Run can launch Windows system programs from any directory. Note that executable file extensions such as .exe can be omitted.
Run notepad
Since both mailmaster.exe and QQMusic.exe are non-system programs and they are not included in the Path environment variable, why AutoHotkey is giving different behaviors for them?
And performance-wise, providing the full path versus just the .exe name, which is faster?
It's specified in the documentation:
Target
A document, URL, executable file (.exe, .com, .bat, etc.), shortcut (.lnk), or system verb to launch (see remarks). If Target is a local file and no path was specified with it, A_WorkingDir will be searched first. If no matching file is found there, the system will search for and launch the file if it is integrated ("known"), e.g. by being contained in one of the PATH folders.
So pretty much if it's found in PATH.
You can try this for example by typing notepad, mailmaster and QQMusic in cmd or powershell. Notepad is found in PATH, and on your system I'm assuming mailmaster is as well, and QQMusic isn't.
You should get the same results as with the AHK Run command.
As for performance, I don't know, I guess this is something you could benchmark.
I'd guess that providing the full path is more efficient.
But maybe finding something from PATH is very well optimized on the the Windows side of things, so maybe there is little to no difference.

How to compile .lua into Windows .exe?

Question related to Windows platform only.
I can't find documentation on how to approach this.
There are dozens of posts about this, yet most provide answers for mac/linux, most windows specific parts lead to dead links or README's that have no useful information.
How do I, for example, make an .exe of the code below? The intent being to share it with another windows user, so that when they click it...it automatically runs the program in command prompt or wherever .exe are supposed to run without them needing to have lua/luac installed on their system.
Or perhaps I'm missing the point here and you need lua/luac installed, otherwise you would need to convert to a program language that's already installed on everyones' windows systems like C...? Regardless I need something that works for the purpose described. Could I make a folder with lua.exe and luac.exe and input.lua and make an .exe that loads command prompt and runs the command to compile input.lua? new_folder: lua.exe, luac.exe, input.lua, run.exe
> --input.lua
print("type ur name")
name=io.read()
print(#name)
print("your name is " name)
I'm not aware of anything in wxlua that can compile a lua file into an executable. There is wxLuaFreeze executable that allows to concatenate a lua script to it to generate a new executable that will run that script when executed. See the documentation for details: http://wxlua.sourceforge.net/docs/wxlua.html#C7.3.

Universal program argument/environment GUI launcher

I work on software that requires access to DLLs, usually wants environment variables set a certain way, and can take command line parameters. I'm generally opposed to setting/modifying system-wide environment variables for the purpose of launching these apps, since I might want to use different dependencies (different dlls), etc. and I don't want to accidentally get the wrong DLL loaded.
Up until now, I've been generating the visual studio .vcproj.user files and matching batch files from cmake ( see here for my script ) that extends the path to include the path to my dlls, sets any other environment variables as needed, and launches the application, forwarding all the command line arguments. (I do the same on Linux, but it's simpler because of RPATH). When we want to launch with a command line argument that wasn't just a file we could drop on the batch file, what we did is copy the batch file and edit the command to add our argument. (It's all GUI applications, but config files/flags can be passed on the command line)
This has become quite a hassle for me and my colleagues, and we end up with a ton of batch files, named similarly and difficult to maintain. It's not really a great interface for starting but there's a lot of apps we either use or develop that are like this, so it's a common task.
My question is this: I'd like a nicer way to configure dynamic library search paths, process-local environment variables, working directory, executable, and arguments for starting a program than hand-editing a batch file every time. I've done some digging to try to find one, but haven't been successful - "launcher" tends to bring me to "search-as-you-type" tools for frequently-used apps, and "command line argument" tends to find recommendations to use batch files. (It's not a windows-specific issue, either, but the dynamic library path stuff is less problematic during the code/compile/run cycle)
I've made a quick mockup of what I'm envisioning: it seems like the kind of thing that has to exist somewhere. Do you know of a tool similar to this (preferably cross-platform, and open source is even better)? It doesn't need all bells and whistles I put in the mockup, but that's what I'd build if I had time to build it myself. Thanks!

What are the differences between running an executable from a Windows Command Prompt versus from Windows Explorer?

EDIT: This is due to stupidity. It is a multiple monitor issue. It's just that from cmd.exe we always opened in the primary monitor, whilst from explorer, we always opened in the secondary. Thanks all for the help!
We hit a weird bug recently. We have a Qt + osg app that behaves differently if we run it from explorer than if we run it from a command line. Running from explorer is unusable, while running from command line (or by running from the explorer a simple batch file that calls the .exe) works as expected.
We suspect environment variables, because that's all we can think of. But the fact that it runs fine with a one line batch file seems to refute this. I'm not familiar enough with windows to know of any subtle differences in how it loads executables, nor where to look to find out.
Are there any other differences that could explain this? Does windows load different sets of user environment variables in each case? OS is Windows XP Service Pack 3.
The behavior experienced when running from explorer (double click program.exe) is consistent with a driver issue or improper OSG scene setup: image artifacts, flashing, and weird colors.
The behavior experienced when running the same executable from cmd.exe (or by double clicking a .bat file next to the .exe containing only a line to run the .exe) is the correct, expected behavior: the scene is correct, no flashing, etc.
To rule out potential library load path issues, try using dot-local DLL redirection.
Towards that end, create an (empty) file in the same directory as your executable and give it the same name as your binary, except with .local appended. I.e., if your binary is named yourbinary.exe, name that file yourbinary.exe.local. That will force the PE loader to first look in that directory to resolve LoadLibrary calls (and that includes DLLs loaded indirectly via system DLLs or via COM, no matter how many indirection levels are involved.) Place as many supporting DLLs (including Qt DLLs) in that directory. If you're using Qt plugins, also place the plugins directory there (or use a custom trolltech.conf.)
More details on dot-local redirection here, for example.
This thread looks like it might have the answer to your question:
http://forum.soft32.com/windows/Start-Run-Command-Prompt-ftopict353085.html
In short, I think it might be looking for your executable in different places depending on which method you attempt to use to run it. Perhaps you have 2 different versions hiding somewhere that explorer uses instead of the one you want?
You have not given enough details so I will give you a general answer. In order to use QT and its tools you need 2 environment variables. *QTDIR, and PATH * Make sure you have these variables set instructions are below. I have taken them from this site. See also this link for deployment on windows.
Setup the QTDIR environmental
variable.
1) Create a new System variable
called: QTDIR
a. Right click on My Computer -> Properties -> Advanced Tab ->
Environment Variables button
b. Find System variables -> New -> Type in "QTDIR" 2) Set the value to: C:\your\Qt\directory (NOTICE: No
trailing '\' character!!!)
Now, add the QTDIR on to your PATH
variable.
1) Edit your PATH variable, add onto
the end of it a ';' if one isn't
already on the end. 2) Now add on:
%QTDIR%\bin;
Example:
Before
PATH=%SystemRoot%\system32;%SystemRoot%;%SystemRoot%\System32\Wbem;
After,
PATH=%SystemRoot%\system32;%SystemRoot%;%SystemRoot%\System32\Wbem;%QTDIR%\bin;
That will make sure that our Qt
application(s) will be able to find
the Qt DLL files when you go to run
it.
I hope this helps.
Perhaps there is a difference caused by the way Explorer launches an executable vs directly running it from the console. I think that Explorer uses ShellExecute or ShellExecuteEx and I doubt that executing an application from a console or batch file does the same.
I would create a test app that tries some of the ShellExecute variants and use different parameters to see if the Explorer behavior can be reproduced in order to try to diagnose what parameters passed to ShellExecute might be causing the problem.
There is an interesting community note on the ShellExecuteEx page that may or may not be applicable:
ShellExecuteEx ignores the current input desktop. It always uses winsta0\default. Instead use ShellExecute or CreateProcess.
I would also investigate whether or not AppCompatFlags affect console executed applications (or see if any AppCompatFlags have been set for your application).

Can the Visual Studio (2010) Command Window handle "external tools" with project/solution relative paths?

I have been playing with the Command Window in Visual Studio (View->Other Windows->Command Window). It is great for several mouse-free scenarios. (The autocompleting file "Open" command rocks in a non-trivial solution.) That success got me thinking and experimenting:
Possibility 1.1: You can use the Alias commands to create custom commands
Possibility 1.2: You can use the Shell command to run arbitrary executables and specify parameters (and pipe the result to the output or command windows)
Possibility 2: A previously setup external tool definition (with project-relative path variables) could be run from the command window
What I am stuck on is:
There doesn't appear to be a way to send parameters to an aliased command (and thus the underlying Shell call)
There doesn't appear to be a way to use project/solution relative paths ($SolutionDir/$ProjectDir) on a Shell call
Using absolute paths in Shell works, but is fragile and high-maintenance (one alias for each needed use case). Typically you want the command to run against a file relative to your project/solution.
It seems you can't run the traditional external tools (Tools->External Tools...) in the command window
Ultimately I want the external tool functionality in the command window in some way. Can anyone see a way to do this? Or am I barking up the wrong tree?
So my questions:
Can an "external tool" of some sort (using relative project/solution path parameters) be used in the Command Window?
If yes, How?
If no, what might be a suitable alternative?
StudioShell is another good, powerful, option. There's nothing quite like navigating around your solution (and Visual Studio as a whole) as if it were a file system. Scriptable of course. I've just begun to scratch to surface of this tool.
Seems as if there may, indeed, be a (much) better approach.
How about a VS extension that embeds powershell into the IDE and allows one to use DTE (Visual Studio Automation Objects)?
Yeah. That would do the trick and much more.
"An interactive, scriptable shell?" you ask? "Yes!" I say.

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