I have a basic C++ program in Eclipse CDT:
#include <iostream>
using namespace std;
int main()
{
std::cout << "Hello World!";
}
However, when I try to build it, I get an Exec Format Error. Here is the output produced by the compiler
g++ -O0 -g3 -Wall -c -fmessage-length=0 -o hey.o "..\\hey.cpp"
g++: error: spawn: Exec format error
I am using MinGW Toolchain. I am on 64-bit Windows, and I think that may have something to do with it. Would anyone know how to get this program running?
Edit
Running the exact command in command prompt in the directory where my source file is works just fine, without throwing errors, but it still doesn't work in Eclipse
So, I have fixed this myself by installing the 64-bit version of MinGW (http://sourceforge.net/projects/mingw-w64/). It now compiles and builds noramlly
Related
So here's my problem. I have downloaded mingw g++ by using msys according to the official vs code website
Here are my files:
Now, when I try to build I get this error:
> Executing task: g++ -std=c++14 -g -o myfile.exe myfile.cpp <
cc1plus.exe: fatal error: myfile.cpp: No such file or directory
compilation terminated.
The terminal process "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe -Command g++ -std=c++14 -g -o myfile.exe myfile.cpp" terminated with exit code: 1.
And if I do have a .exe file:
edit: I also started getting errors with
#include <iostream>
I would make this a comment if I could. What is the name of the file where you have written #include <iostream>?* I think if you change the name of that file to "myfile.cpp", you might stop getting that error. You will probably get a different error saying that "main() cannot be found" or something like that, but that's an improvement from your current spot.
*I see it's O3.cpp. Try changing that to myfile.cpp.
I'm using atom to practice C++ (I'm very new). I just learned to initialize variables like the following:
#include <iostream>
using namespace std;
int main() {
int myInt {};
return 0;
}
When I build and run the previous code in codelite I receive no errors. However, if I compile my atom file dailyPractice10.cpp using my MacBook terminal (zsh) I get the following error:
dailyPractice10.cpp:7:12: error: expected ';' at end of declaration
int myInt {};
^
;
1 error generated.
I'm using the following command to compile it on terminal:
g++ -o dailyPractice10 dailyPractice10.cpp (compiles)
./dailyPractice10 (runs program)
Does anyone have any feedback why this code runs in codelite but doesn't compile in terminal?
Because this feature is added from c++11.
if you will like to try below command.it will work.
$ g++ -std=c++0x -o dailyPractice10 dailyPractice10.cpp
The key to fixing this issue is to set the C++11 (or above) standards while building your code.
In the console tab of the IDE, the following output is generated before the error. Notice that no standard is being defined while building the code:
make all
Building file: ../1.cpp
Invoking: GCC C++ Compiler
g++ -O0 -g3 -Wall -c -fmessage-length=0 -MMD -MP -MF"1.d" -MT"1.o" -o "1.o" "../1.cpp"
We need to add the --std=c++1x flag to the g++ command. The following solution is for the ones using the Eclipse IDE and the MacOSX C++ compiler:
Right click on the project from the "Project Explorer".
Go to Properties > C/C++ Build > Settings.
Under the "Tool Settings" tab, find "GCC C++ Compiler" > "Miscellaneous"
In the "Other Flags" text box, edit the text such that it looks like:
-std=c++17 -c -fmessage-length=0
If you intend to use any other c++ standard, replace "c++17" with the standard of your choice ( eg. c++20).
Apply Changes.
Run Clean, and the Build again.
you should try this to compile the Code
g++ -std=c++20 -o dailyPractice10 dailyPractice10.cpp
I installed MinGW and CDT following some tutorials. I'm trying to compile and run "hello world" code. There are no errors in eclipse but when I compile the code I get this error:
22:48:32 **** Incremental Build of configuration Debug for project test3 ****
Info: Internal Builder is used for build
g++ "-IC:\\MinGW\\lib\\gcc\\mingw32\\4.8.1\\include\\c++" "-IC:\\MinGW\\lib\\gcc\\mingw32\\4.8.1\\include\\c++\\mingw32" -O0 -g3 -Wall -c -fmessage-length=0 -o "src\\test3.o" "..\\src\\test3.cpp"
g++: error: CreateProcess: No such file or directory
22:48:32 Build Finished (took 135ms)
The code:
#include <iostream>
using namespace std;
int main() {
cout << "!!!Hello World!!!" << endl; // prints !!!Hello World!!!
return 0;
}
Might be a silly question to ask, but did you save the file somewhere before building it? I've had an error like this that was solved by saving it on my Desktop or wherever.
Edit: There seems to be several people with problems using MinGW. You mentioned you looked at previous stackoverflow questions, do they include these:
Eclipse CDT error: Unable to compile
MinGW error: No such file or directory exists
Other solutions suggest you should try compiling the program via command line, which...shouldn't be a problem since it's just "Hello, World".
I have installed the Bloodshed Dev-C++ compiler on my Windows 7 machine. Now how can I compile from the command line?
File main.cpp:
int main()
{
return 0;
}
Compiling:
g++ -Wall main.cpp -o main
The bin folder from MinGW has to be in the path environment variables, and for g++ there are lots of documentation on how to use it. As far as I know, there is not a difference from g++/MinGW and g++ from Linux, so any Linux tutorial will also work on Windows.
I have MinGW installed on my computer (I just use the one shipped with Strawberry perl). I can compile things just fine from the command line. Using Eclipse CDT, however, results in weird errors. Using the c++ hello world default project which comes with Eclipse, compilation in CDT fails with these errors:
\**** Internal Builder is used for build \****
g++ -O0 -g3 -Wall -c -fmessage-length=0 -osrc\hw.o ..\src\hw.cpp
..\src\hw.cpp:9:20: error: iostream: No such file or directory
..\src\hw.cpp: In function 'int main()':
..\src\hw.cpp:13: error: 'cout' was not declared in this scope
..\src\hw.cpp:13: error: 'endl' was not declared in this scope
Build error occurred, build is stopped
Time consumed: 263 ms.
But when I run g++ -O0 -g3 -Wall -c -fmessage-length=0 -osrc\hw.o ..\src\hw.cpp on my command line compilation goes just fine. All of the proper header files (like iostream) are in my path variable. What eclipse settings do I need to change to make this work?
Here's the file I'm trying to compile:
#include <iostream>
using namespace std;
int main() {
cout << "!!!Hello World!!!" << endl; // prints !!!Hello World!!!
return 0;
}
I experienced this only a few days ago, the problem turned out to be that I had both g++4.3 and g++4.4 installed and Eclipse was getting confused. I uninstalled 4.3 and the problem went away.