I am new to Verilator and encountered a problem with basic HelloWorld example. I was following the Verilator Manual and wanted to execute the basic Helloworld example with C++ wrapper program (2.1 Example C++ Execution). After invoking command
verilator -Wall --cc --exe --build sim_main.cpp our.v
an obj_dir directory was created with generated C++ code and after running Vrun file, my terminal gets stuck,blocked..whatever..does nothing.
I always have to CTRL-c and cancel it afterwards.
I also tried with not using the -build in the command, and I manually compiled it. And still to no avail.
Has anyone encountered a problem like this, or does someone have any idea what is wrong? I'm using Ubuntu 20.04.3 LTS, and Verilator version 4.211 devel rev v4.210-78-g27d53691
Thanks.
Note: I had no problems during installation
Related
i just started to code in cpp and nothing is working idk if i didn't install the gcc properly or what but i already set the path of the bin file idk why it refuses to run
the code:
#include<iostream>
int main()
{
std::cout<<"hello";
}
and the problem is that when I try to use the "code runner extension" it is not working so I just press f5 and then when I get the error messages which says at first "could not find the task file'c/c++:g++.exe build active file' " and I get three options 1:debug anyway
2:configure task
3:cancel
when I choose debug anyway I get this error here
Since you're on windows consider installing Visual Studio or CLion. They're more beginner friendly - VSCode can get tricky to run c++ on windows. Either way, looks like you're trying to run your project without building it first. There should be a build option right next to the run option. Try building it, then running. The build is what compiles and creates the project.exe file, which is what the compiler is saying isn't there.
The referenced IDE's always auto-build on run, so there's that
If you're familiar with using the command line, these commands will do what you want, assuming the .cpp file is in your current directory.
g++ <FILENAME>
./a.out
There are wonderful flags you can add to the first command (the compiling command) like -Wall, -Wextra, -o, and many more. But, since it seems like you're just starting out, there's no need to worry about those!
If you're not familiar with the command line, I would encourage you to become familiar! It is an extremely powerful tool for a programmer. Here is a YouTube video that talks about it.
I just switched to ubuntu and I wanted to setup notepad++ for CPP.
So I used the NppExec plugin to compile within notepad++,
My script was :
npp_save
g++ "$(FULL_CURRENT_PATH)" -o "$(CURRENT_DIRECTORY)\$(NAME_PART)obj"
./"$(NAME_PART)obj"
Here the "obj" I used is to just save the file with an "obj" keyword nothing else.
The last line ./"$(NAME_PART)obj" is to run the program.
But it looks not working in ubuntu, it produces this error:
NPP_SAVE: Z:\home\username\cpp\test.cpp
g++ "Z:\home\username\cpp\test.cpp" -o "Z:\home\username\cpp\testobj"
; about to start a child process: "g++ "Z:\home\username\cpp\test.cpp" -o "Z:\home\username\cpp\testobj"
CreatProcess() failed with error code 2:
File not found.
./"testobj"
; about to start a child process: "./"testobj""
CreatProcess() failed with error code 2:
File not found.
I have investigated some of what I think is the problem, so I think is the usage of / and \ in changing the directory.
I don't know how to fix that, so I can not be sure.
Any ideas? :) I am using vim btw in the same machine and it is working perfectly.
In theory it might be possible (see below), in practice it is rather convoluted and works only for simple compiles (like single file hello world type).
I would suggest you try a linux program, e.g.
an editor like
scite (same editing engine as notepad++) or
kate
or a real IDE like
kdeveloper or
qtcreator.
The problems with Notepad++ inside wine and g++ outside wine (from the linux install ) are this:
notepad++ inside wine under linux is still a windows program
NppExec can only do, what a cmd inside wine can do.
starting g++ directly inside cmd is an error due to g++ being a linux binary and not a windows binary
that is your CreatProcess() failed with error code 2, it means: you are trying to execute a linux program inside wine.
That does not work! (At least not so easy.)
Though you can start linux program inside cmd inside wine using start /unix ...
started this way, g++ wants linux paths and NppExec through its variables will provide only windows paths (whatever wine has set up as drives like Z:\home\username\src\hello.cpp)
though you can convert wine paths to linux paths via the winepath -u command.
g++ started through 'start /unix ... ' inside a cmd inside wine has no proper terminal to report errors to you
though you can start an xterm for g++ and have g++ reports its messages to the xterm
the downside is that g++ will report errors using the linux paths in the xterm, so you cannot double click on an error message an get to the corresponding filename and line.
You get the idea: its complicated not comfortable.
What worked for me for a helloword.cpp was this NppExec script:
NPP_SAVE
npp_run cmd /c start /unix /usr/bin/xterm -e "/usr/bin/winepath -u '$(FULL_CURRENT_PATH)' | xargs g++ -o /tmp/a.out && /tmp/a.out ; echo 'Press return'; read"
The second line
uses an xterm,
let winepath convert the Z:\home\... path to /home/... and
have that send to g++ for compilation using /tmp/a.out as binary
if compile is successfull, /tmp/a.out is executed
the echo and read are for keeping the xterm open so that you can read the output.
If you really want to use Notepad++ inside wine, one option might be using Gnu Make outside of wine and have NppExec run make all or make run similar to the g++ in my script example. That would work for more complicated compiles.
I did a clean install of MinGW on Windows 7 32bit with the GUI Installer, and installed
ming32-base-bin
mingw32-gcc-g++-bin
msys-base-bin
When trying to compile a simple "Hello World.cpp" from the cmd.exe i get the error:
C:\Users\Lorenzo\Desktop>g++ "Hello World.cpp" -o"Hello World.exe" -m32
g++: fatal error: cannot execute 'cc1plus': CreateProcess: No such file or directory.
compilation terminated.
The weird thing is that by grabbing the file from the desktop and putting it over g++.exe (so that i open the file with the application) in the MinGW directory, i don't get any error.
A temporary fix i found was to have a new environmet variable pointing in the folder where cc1plus is (C:\MinGW\libexec\gcc\mingw32\9.2.0). The program runs but doesn't include the libraries from C:/MinGw/lib and C:/MinGw/Include, i have to include those manually, which shouldn't occur (i guess).
I don't want to do this crude fix since i know i'll encounter some other problems with time.
Ok. I found the solution with some luck.
It is as simple as adding .exe to g++
> g++.exe *input file* -o*output.exe*
Don't Know if it's a bug or not, but this works for me.
I'm not sure which MinGW you used exactly, but it's better to use MinGW-w64.
There is a standalone build you can get from http://winlibs.com/ that doesn't require installation. The site also gives some instructions on how to use it.
While searching for an HTTP client C++ based library, I have decided to use the casablanca -- so I needed to build it.
I'm running on Ubuntu 16.04.
While following the "common" build steps described here: How-to-build-for-Linux I have encountered a build error (when running the make command as the last operation of step 4).
The entire error output can be found here (now it is the last comment in the thread cpprestsdk-build-error#266).
Just to be sure my system has the needed build tools and libraries I performed the command mentioned in step 2 and this is the output:
--> Which means my system is "good to go".
So after I struggled it a little more, I have found "an alternative" way to build it:
I have downloaded the source code from here: Source Package: casablanca (2.8.0-2) [universe], and again, followed the same instructions STARTING FROM STEP 4 from the link mentioned in the question (How-to-build-for-Linux).
This time the make phase was successful !! (it is worth to mention that not all the unit tests that are recommended to be run on step 5 passed - I did not spend time trying to understand why...).
Went on and "copied-pasted" the complete sample provided at the bottom of the following link: cpprestsdk-Getting-Started-Tutorial.
Built the program with the following command (the program contained a single cpp file called main):
g++ -std=c++11 main.cpp -o myProg -lboost_system -lcrypto -lssl -lcpprest
Ran the program
./myProg
and it passed (there was output in the console saying:"Received response status code:200").
Would be glad to hear if you have encountered the same issue, or perhaps I did something wrong in my first attempt (or in any other step along the way).
I am trying to run the netbeans makefile via my terminal of one of my C++ project
While executing
Make
, I receive the following errors:
...
/bin/sh: 1: -o: not found
make[1]: *** [nbproject/qt-Debug.mk] Error 127
...
What should I do? Thanks in advance. Please note that I can easily build the program via Netbeans.
EDIT : I use ubuntu 13.04, netbeans 7.3, linux terminal.
I simply use:
make
or
make CONF=Release
in the project root (where the Makefile is located), and it works. I have a simple C++ project without anything extra.