I am facing log/slog is no in std (/usr/local/go/src/log/slog)

[Marinero0214222]

Hi All,

I am using the following command to build shared library:
go build -buildvcs=false -buildmode=c-shared -gccgoflags="-s -w" -compiler=gccgo -o xxxx.so

but, finally, returns the final error message:
/home/sqc/go/pkg/mod/github.com/go-logr/logr@v1.4.1/context_slog.go:25:2: package log/slog is not in std (/usr/local/go/src/log/slog)

go version: go1.21.9 linux/amd64.

Please help to check if it is bug or not

Thanks,
Marinero

[pohly]

Double-check your Go installation. 1.21 should have log/slog: https://pkg.go.dev/log/slog@go1.21.0

[Marinero0214222]

Hi @pohly

Yes. I checked. log/slog is present. but, still report this issue. are there other impacts?

I found if i used "compiler=gccgo" to build, returned this error. without it, using default gc, it has no issue.

Thanks,
Marinero

[pohly]

Perhaps -compiler=gccgo? Can you try without any flags?

[Marinero0214222]

Hi @pohly

I found the size of binary built by gc is around 15MB. So, I want to try use gccgo to build and compare the size difference.But, facing this issue.

Can you give some proposals?

Thanks,
Marinero

[thockin]

We can't attest to what gccgo does. https://go.dev/doc/install/gccgo says:

"""
The GCC 12 and 13 releases include a complete implementation of the Go 1.18 standard library. However, GCC does not yet include support for generics.
"""