Program "g++" Not Found In Path

i have problem when add openCV native C, to my project. first it just say 'Program 'g++' not found in PATH' 'Program 'gcc' not found in PATH' but when I right click on my project -

Solution 1:

If your IDE is eclipse,you must reset to the default settings. You can do it as following:

1- open Eclipse->Windows->Preferences->C/C++->Build->Settings

2- You will find, under the 'Discovery' tab, two options: [reset] or [restore defaults] the 'CDT GCC Build in Complier Settings [Shared]' or all settings.