How do I make g++ 10 my default c++ compiler

Asked Oct 07 '21 at 20:59

Active Oct 07 '21 at 20:59

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I am using 20.04 and I have g++ 10 installed, but when I use g++ --version it says 9.3. Also, I can't use any c++ 20 in my code in either IDE I use. Please let me know how I make g++ 10 the default. Thanks

asked Oct 07 '21 at 20:59

davidvan

Did you know you can set the CXX environment variable, and most build systems will inherit that configuration? If you're using a build system generator, like CMake, you'll need to export this in your environment when you run configuration. – galexite Oct 07 '21 at 21:04
What IDE do you use? – galexite Oct 07 '21 at 21:08
I use both CLion and Code::Blocks – davidvan Oct 07 '21 at 21:15
I think i just need to know how to set the CXX environment variable then. – davidvan Oct 07 '21 at 21:29
Well, I solved the problem in a roundabout way, I upgraded to 21.04 and it set my default g++ to 10 – davidvan Oct 08 '21 at 01:01

How do I make g++ 10 my default c++ compiler

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