g++: error：unrecognized command line option ‘-std=c++2a’

Question

[wangjincheng]

I was installing a software in linux, it required "make" to compile, but it showed the error below. It seems the gcc version is too low, and then I upload gcc by conda, including gcc8,gcc9,gcc10 and gcc12. the error still exist. what should I do to solve this problem? Thanks a lot!

g++ -MMD -std=c++2a -I. -Wall  -fopenmp -mpopcnt -O3 -o IBIS.o -c IBIS.cc
g++: error：unrecognized command line option ‘-std=c++2a’
make: *** [IBIS.o] error1

[ATpoint]

How is this related to bioinformatics? General CS/compilation/code questions are better suited for StackOverflow after making sure that a google search of the error does not solve it.

[4galaxy77]

Installing software is one of the most important things in bioinformatics, particularly for beginners. This isn't a 'general CS' question at all.

[Rob]

This is clearly an error related to g++. ATpoint is right that there is nothing that makes this "specifically" a bioinformatics question.

Anyway, the problem is that -std=c++2a is an alias for old gcc versions. The OP may want to try replacing this with either -std=c++20 or -std=c++2b (if there are c++23 features being used).