Eclipse C++ : "Program "g++" not found in PATH"

Today I have bumped into this problem and solved it in the following way. I pressed "Reset defaults" button everywhere I could find it in Eclipse settings (for example, Preferences/C++/Build/Settings/Discovery). After that the error disappeared and the code compiled successfully.

This is how I got rid of it:

1. Install the MinGW.
2. Select all files in the Basic Setup and select apply the changes.
3. Select new C++ Project You will be able to see "MinGW GCC" in the toolchain section select the same and create project.

You need a gcc, g++ compiler toolchain (on your windows machine) for the eclipse which you have manually downloaded,One of the options can be done implicit via cygwin installation(by selecting proper development packages for gcc, g++) and then add the location of the compiled gcc ,g++ package like C:\cygwin\etc\alternatives to the PATH variable for windows environment.

After this open eclipse and go to Project->properties->C/C++ Tool Chain Editor and add replace default GNU C++ compiler and GNU C Compiler with Cygwin C++ compiler and Cygwin C compiler and rebuild the project. The errors related to gcc, g++ PATH not found will now be gone.