I am trying to write some C code and execute it through Cygwin command line interface using the below command but it throws me an error. I selected the gcc package when i have installed the Cygwin utility. Please kindly share your thoughts regarding the same. Thank you.
$ gcc HelloWorld.cpp -o HelloWorld
-sh: gcc: command not found
Related
the screenshot shows what the empty field and the code writtenI have just set up VS Code for programming with C, I installed all the necessary things (gcc, gdb..etc)
But when I started writing basic code, vs code shows an empty output after I run it
Installation (Ignore if installed)
Windows
Install mingw/gcc/clang compiler and then add it to the path.
GNU/Linux
Install gcc/clang compiler using your package manager.
Arch Based Distros: `sudo pacman -S gcc`
Ubuntu/Other debian based distro: `sudo apt install gcc g++`
Now, install C/C++ extension for VSCODE here's the link C/C++ extension
Installing the C/C++ VSCODE extenion
Or you can directly install it through Ctrl+Shift+P and paste this snippet ext install ms-vscode.cpptools.
Compiling
Now, open your terminal in VSCODE and run gcc Test.c -o test and then run ./test to execute your program.
Or, if you have installed clang compiler then the terminal command goes here clang Test.c -o test and then run ./test to execute your program.
Main method have return type int, try return 0; after printf. Or you need to add argument to main method, in java program i know we can not run program without argument.
Or
Try make void main method
I'm a C newbie who recently installed gcc and gdb on windows 10 through MinGW. However, when I tried to debug my program using gdb through win10 cmd I got an error.
Here's what I did on cmd:
gcc ./test.c
gdb ./a.exe
And I got this:
not in executable format: File format not recognized
Then I tried to install gdb on bash as well and did the following:
gcc ./test.c
gdb ./a.out
(gcc through bash would create a.out but would create a.exe through cmd)
This time gdb seems to be able to start the executable file correctly, however when I tried typing in break commands I got another error message:
No symbol table is loaded. Use the "file" command.
Can anyone help to solve the problem?
PS. I've tried using file but it didn't work either.
PSS.after using gcc -g ./test.c the gdb seems to be working correctly on bash. However the windows one still can't run .exe file.
I'm following the steps of the online book: "Learn C The Hard Way", and since I'm using Windows 7, I've installed Cygwin to use the Linux commands. But I'm facing a problem just on the first exercise of the book. I'm supposed to put the following command on the shell:
$ make ex1
After creating a ex1.c file on the folder. The command should give me:
cc ex1.c -o ex1
But instead, I'm getting the following message:
$ make ex1
cc ex1.c -o ex1
process_begin: CreateProcess(NULL, cc ex1.c -o ex1, ...) failed.
make (e=2): The system cannot find the specified file.
make: *** [ex1] Error 2
What's wrong?
First of all you should know that you should be running the command in the same directory where the file is. In cygwin, first you will have to locate to the folder in which the file is present, then you can run these make commands. Better since you are using Windows. You should better use any other windows based client for C. But if I were at your place. I would have installed a virtual Linux environment on my local windows computer and would have worked on that. You should try that once. Linux Terminal gives a lot of power to the developer. There are a lot of things which you can do on a terminal which is not supported by cygwin. For compiling C programs on Cygwin, I believe you should check if it supports compiler commands or not. :)
Make is reporting that it can not find cc.
cc is a link to gcc, and it belongs to gcc-core.
$ cygcheck -f /usr/bin/cc
gcc-core-5.4.0-1
To verify if the package is correctly installed
$ cygcheck -c gcc-core
Cygwin Package Information
Package Version Status
gcc-core 5.4.0-1 OK
If, as likely, the package is missing, you need to install it with the cygwin setup.
I know this question has been asked several times and I took a look at many of them like
Running linux gcc-compiled program under windows
How can I compile C files into an executable (.exe) file?
Unfortunately, none of them worked for me.
My situation
I've installed Ubuntu and Windows on my Notebook.
Let's say I developed a simple "Hello,World!"program using a text editor in c.
In Ubuntu, I've compiled it using GCC
$ gcc -o hello.out -g -Wall -pedantic hello.c
I executed it './output.out'
And got the result Hello, World!
What I tried
So I kind of cross-developed here. I switched to Windows and kept going.
Now, I try to make it an executable file in order to run it on Windows. I know Windows can't handle '$ ./output.out' , alright, let's make it an executable then.
Under Windows, I've
installed cygwin
In Cygwin, I compiled it using GCC
$ gcc -o hello.exe -g -Wall -pedantic hello.c
Note: I wrote hello.exe instead of hello.out or hello.c
In Cygwin, I executed it '$ ./output.exe'
And got the result Hello, World!
Note: At this point, it even works with my Shell under Windows because I installed Cygwin and set up my PATH etc. This means I can open my command line, go to the directory in which 'hello.exe' is located and execute it by typing '> hello.exe'
I thought that would be it, so I took hello.exe' and moved it to another notebook (not my local machine). I tried to execute it but it didn't work.
At first, I got an cygwin1.dll missing message. After fixing it, another error appears.
What I'm trying to accomplish
To make a long story short:
The reason I wrote so much is that I want to give you a detailed look of my situation.
Basically, I'm trying to create an executable c file, which any Windows User could execute without having any development tools.
In Eclipse and Java, you could simply export your program making it a runnable -jar file. All the User has to do is install the latest Java SE version to get it running.
Additionally, I tried to compile my program in Visual Studio but that didn't work either.
Any suggestions? Thanks a lot!
cygwin gcc produce an executable linked to the cygwin1.dll. So it is not usable without that.
gcc hello.c -o hello-cygwin.exe
$ ldd hello-cygwin.exe
ntdll.dll => /cygdrive/c/Windows/SYSTEM32/ntdll.dll (0x77bd0000)
kernel32.dll => /cygdrive/c/Windows/system32/kernel32.dll (0x77ab0000)
KERNELBASE.dll => /cygdrive/c/Windows/system32/KERNELBASE.dll (0x7fefdc60000)
SYSFER.DLL => /cygdrive/c/Windows/System32/SYSFER.DLL (0x75650000)
cygwin1.dll => /usr/bin/cygwin1.dll (0x180040000)
If you need a standalone program, a solution is to use the mingw compiler
(it is available on cygwin as cross compiler to windows)
$ x86_64-w64-mingw32-gcc.exe hello.c -o hello-mingw64.exe
$ ldd hello-mingw64.exe
ntdll.dll => /cygdrive/c/Windows/SYSTEM32/ntdll.dll (0x77bd0000)
kernel32.dll => /cygdrive/c/Windows/system32/kernel32.dll (0x77ab0000)
KERNELBASE.dll => /cygdrive/c/Windows/system32/KERNELBASE.dll (0x7fefdc60000)
SYSFER.DLL => /cygdrive/c/Windows/System32/SYSFER.DLL (0x75650000)
msvcrt.dll => /cygdrive/c/Windows/system32/msvcrt.dll (0x7fefdf40000)
You can move the resulting program on another windows machine that don't have cygwin installed.
You should use mingw which is the gcc port for windows instead of gcc under cygwin. You can get it here.
I installed Eclipse in fedora and then installed the CDT plugin for developping C/C++ applications . All the installation are done !
So now i can create a C/C++ project but when it comes to running it i got this message
launch failed , Binary not found
and
unable to find full path to gcc.
gcc -O2 -g -Wall -c -fmessage-length=0 -o Rad1.o ../Rad1.c
Internal Builder: Cannot run program "gcc": Unknown reason
Error: Program "gcc" is not found in PATH
Is there any more configuration i must do so C/C++ runs?
Thanks.
Executing c/c++ program with eclipse+unix base plate-forme, it requied object file of the program to execute/run it. So first of all you need to build your program by just pressing Ctr+b to buid it. This will create an object file that was required. Now you enabled to run/execute your programe. Good luck :)