undefined: CalibFlag and others at WSL

[hasanAjsf]

I installed gocv at Windows 10 WSL, using Ubuntu. installation completed successfully, but once I tried to cross compile for Windows, I got the below :

# gocv.io/x/gocv
/home/hajsf/Go/src/gocv.io/x/gocv/calib3d_string.go:3:9: undefined: CalibFlag
/home/hajsf/Go/src/gocv.io/x/gocv/calib3d_string.go:29:9: undefined: CalibCBFlag
/home/hajsf/Go/src/gocv.io/x/gocv/core_string.go:3:9: undefined: MatType
/home/hajsf/Go/src/gocv.io/x/gocv/core_string.go:57:9: undefined: CompareType
/home/hajsf/Go/src/gocv.io/x/gocv/core_string.go:75:9: undefined: CovarFlags
/home/hajsf/Go/src/gocv.io/x/gocv/core_string.go:93:9: undefined: DftFlags
/home/hajsf/Go/src/gocv.io/x/gocv/core_string.go:113:9: undefined: RotateFlag
/home/hajsf/Go/src/gocv.io/x/gocv/core_string.go:125:9: undefined: KMeansFlags
/home/hajsf/Go/src/gocv.io/x/gocv/core_string.go:137:9: undefined: NormType
/home/hajsf/Go/src/gocv.io/x/gocv/core_string.go:159:9: undefined: TermCriteriaType
/home/hajsf/Go/src/gocv.io/x/gocv/core_string.go:159:9: too many errors

Your Environment

• Operating System and version: WSL at Windows 10 - Ubuntu WSL 2
• OpenCV version used: 4.4.0
• How did you install OpenCV? as per GOCV instructions https://gocv.io/getting-started/linux/
• GoCV version used: 0.24.0
• Go version: 1.15
• Did you run the env.sh or env.cmd script before trying to go run or go build? No

[giovanni-annunzio]

Hi @hajsf,

I had the same issue. Did you check if the env CGO_ENABLED=1?

Regards Gianni

[alimoeeny]

@giovanni-annunzio you are a hero,

[stedwick]

@giovanni-annunzio Hi! 👋

I'm having the same error, but in MSYS2 on Windows 11. just wonder if you have any ideas =P

phili@PhilBook3 UCRT64 ~/gocv
$ set CGO_ENABLED=1

phili@PhilBook3 UCRT64 ~/gocv
$ go run -tags customenv "C:\msys64\ucrt64\lib\go\pkg\mod\gocv.io\x\[email protected]\cmd\version\main.go"

# gocv.io/x/gocv
C:\Users\phili\go\pkg\mod\gocv.io\x\[email protected]\calib3d_string.go:3:9: undefined: CalibFlag
C:\Users\phili\go\pkg\mod\gocv.io\x\[email protected]\calib3d_string.go:29:9: undefined: CalibCBFlag
C:\Users\phili\go\pkg\mod\gocv.io\x\[email protected]\core_string.go:3:9: undefined: MatType
...
C:\Users\phili\go\pkg\mod\gocv.io\x\[email protected]\core_string.go:159:9: too many errors