I am using ActivePerl and Eclipse Luna. I am trying to run Perl files through Eclipse but it's not working; it is giving following error
To operate correctly, EPIC requires a Perl interpreter" reason: Fail to execute command line "C:\Perl\bin\perl.exe
It was working fine earlier but for the last couple of days it is showing this error. I have reinstalled Eclipse/EPIC and tried every solution I can wind on the web like changing the perl executable path, but nothing is working for me.
I can run Perl from the command line.
Related
I am about to learn Haskell, (maybe, if I can get the program to work) I am working along with the book,"Learn you a Haskell for great good". I did some DOS in 80's a few weeks of COBAL in the 90's, so absolute noob.
I have loaded chocolatey into powershell in windows 10 as an administrator, that worked, entered choco install haskell-dev haskell-stack. That worked. ran refreshenv, that worked. then rebooted computer, went to command prompt and entered ghci [return] and is says no file found. then tried installing -dev and -stack with --force command, and that worked in case didnt take the first time. went to command prompt ghci nothing. reboot, command prompt then ghci [return] cant find file. ugh. any ideas?
My Haskell notes say a fresh installation goes like this:
Install chocolatey as administrator. There should be no errors returned. Run 'choco' to ensure that the installation worked.
Install stack
choco install haskell-dev
refreshenv
On Windows, the new compiler is stored here: C:\ProgramData\chocolatey\lib\ghc\tools\ghc-8.10.1\bin.
If it does not work as the default compiler, it could be masked by an earlier entry in the path list.
When you run which, PowerShell get-command what does it return? What is your path set to?
If no joy, you could search for an online Haskell REPL. Try this one:
https://replit.com/languages/haskell. You can enter code on the left hand side, and run it, or start the REPL with ghci on the right hand side. It's a bit clunky by comparison to a full IDE, but perhaps enough to get started with.
I am trying to install Emscripten on my computer, and I have run into trouble getting Emscripten actually installed.
I am using the same commands as can be found on the project webpage, but when I try to run
emsdk install latest
Powershell (which is what I am using, but the basic command prompt is behaving the same way) doesn't do anything at all - it just returns without installing anything.
For reference, I have installed Emscripten on this same computer before, but decided to try and do a fresh install of Emscripten after running emsdk activate latest decided to "stop working" as well (whereas it worked just fine last week) - running the command, Powershell simply returned without actually doing anything.
Any ideas on what to check to see why these commands don't seem to run?
I think I solved it. When running the install command in Powershell ISE, it threw the error "Python was not found but can be installed from the Microsoft Store: https://go.microsoft.com/fwlink?linkID=2082640"
despite me having Python installed. Changing the order of my PATH variables to set my Python install directory above the Winapps directory solved the issue with running the install command.
I have installed Epic in my Eclipse to run perl scripts. Unfortunately, iam getting the below error while trying to run the script.
Failed to execute command line: "perl" "-v"
Cannot run program "perl" (in directory "."): CreateProcess error=2, The system cannot find the file specified
When i tried to run "perl -v" in command prompt, it worked fine on the day i installed Epic. After restarting, the command does not work and the folder C:\Dwimperl became empty.
Note : The script did not run and showed the same error in eclipse even on the day i installed Epic.
I am using Windows 7, Eclipse Luna Release 2(4.4.2), and Perl 5 (before restart, now deleted)
These are the contents of my System PATH
E:\app\mevenk\product\12.1.0\dbhome_1\bin
C:\ProgramData\Oracle\Java\javapath
%SystemRoot%\system32
%SystemRoot%
%SystemRoot%\System32\Wbem
%SYSTEMROOT%\System32??\WindowsPowerShell\v1.0\
C:\Program Files (x86)\Sony\VAIO Startup Setting Tool
%JAVA_HOME%\
C:\Program Files (x86)\QuickTime\QTSystem\
C:\Program Files (x86)\Skype\Phone\
%M2_HOME%\bin
If not already done, In the eclipse perl EPIC preferences you need to set the full path to your perl interpreter:
e.g. In my Eclipse I have:
Window -> Preferences-> Perl EPIC-> Perl executable = "C:\DEV\TOOLS\perl\perl\bin\perl.exe"
Problem resolved after installing ActivePerl.
The problem is with perl Interpreter given with Epic (Dwimperl) which did not set the PATH variables and installables properly.
After installing ActivePerl, Eclipse took its path variables.
C:\Perl64\site\bin;C:\Perl64\bin;
Now, perl scripts working fine in Eclipse.
I installed Active Perl 5.20
and also Strawberry Perl 5.20 after uninstalling Active Perl.
In both cases, when I open cmd and type 'perl' I get:
Unknown Unicode option letter ':'.
This error also prevents all scripts from running on my Windows 8.1 installation.
I uninstalled Perl and did a fresh install and it still doesn't work.
Are there dependencies that I need to install?
I googled the error but the results pertain to Linux installations where the script specified something wrong. But I get this error when I even try to use any perl command line or script. So my problem is not a faulty script.
That is the error message you get from using an invalid value for the -C command-line option. At a guess I'd say you have the PERL_UNICODE environment variable set to a string that contains a colon :.
Take a look at Command Switches in perldoc perlrun for more detail on this.
I too had this problem on windows 8.1 . The problem is that, once on installation, .pl files are not automatically recognized by Perl engine. So please select a .pl file and right click and say open with and set the default program to C\perl\bin\ inside it click perl.exe and recognize it. Once this is done your perl works flawlessly.
I have a problem when i try to build my makefile project within Eclipse on Linux OS. Whole makefile executes fine except for the last command which is unsimgcr -pd input output. I get an error /bin/bash: unsimgcr: command not found.
The weirdest thing is that if i run make command from linux terminal the makefile executes fine no problems. I think I should set something within Eclipse IDE, but I don't know how and help would be appreciated.
Likely unsimgcr is in your path when you run it from the command line but not in the path when run from eclipse. Either fix the path issues, or put an absolute path to unsimgcr in the make file.