Eclipse C++: Symbol 'std' could not be resolved

user_696627 0
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I am getting this error in the TestExecute.cpp -

"Symbol 'std' could not be resolved"

CODE

#include <iostream>
using namespace std;

I just created a executable project in Eclipse (in Windows 7) as shown below. It seems like I am selecting a toolchain that is not supported. Is it so? I have installed Cygwin and it is available in preferences.

EDIT: Based on @RobertoWilko comment, removing the line "using namespace std; " removed the error. But the binary is not created. "Launch Failed. Binary not found". How to correct this?

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eclipse-cdt eclipse c++
11 Answers

This worked for me on Eclipse IDE for C/C++ Developers Version: 2020-03 (4.15.0) Build id: 20200313-1211. Also, my code is cross-compiled.

  1. Create a new project making sure it's created as a cross-compiled solution. You have to add the /usr/bin directory that matches your cross-compiler location.
  2. Add the C and C++ headers for the cross-compiler in the Project Properties.
  3. For C: Project > Properties > C/C++ General > Paths and Symbols > Includes > GNU C. Add... -> The path to your /usr/include directory from your cross-compiler.
  4. For C++: Project > Properties > C/C++ General > Paths and Symbols > Includes > GNU C++. Add... -> The path to your /usr/include/c++/ directory from your cross-compiler.

  5. If you don't know your gcc version, type this in a console (make sure it's your cross gcc binary):

    gcc -v

  6. Modify the dialect for the cross-compilers (this was the trick).

  7. For C: Project > Properties > C/C++ Build > Settings > Tool Settings > Cross GCC Compiler > Dialect. Set to ISO C99 (-std=C99) or whatever fits your C files standard.
  8. For C++: Project > Properties > C/C++ Build > Settings > Tool Settings > Cross G++ Compiler > Dialect. Set to ISO C++14 (-std=c++14) or whatever fits your C++ files standard.
  9. If needed, re-index all your project by right-clicking the project > Index > Rebuild.
user_32381020

Try restart Eclipse first, in my case I change different Compiler setting of the project then it shows this message, after restart it works.

user_45738390
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