Unsolved error :-1: error: D8021 : invalid numeric argument '/Wextra'
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iam working on project blockchain cryptocurrency
but then i compiled it and run on windows 10 64 bit , it throws error
:-1: error: D8021 : invalid numeric argument '/Wextra'can i know what it is all about
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Looks like you have a
'/Wextra'
in your code where you probably wanted"/Wextra"
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Hi @aminnagpure,
The problem is most likely that the project file (
*.pro
orCMakeLists.txt
) you're using is specifying a compiler flag that is only supported by clang / gcc, but not MSVC.Specifically, the
-Wextra
flag is used by clang and gcc (including MinGW) to enable extra compiler warnings. Butcl.exe
(the Microsoft compiler) does not support that flag (it uses something like/W4
or/Wall
instead).Have you written your own project file?
Cheers.