Add support for building wazero with GOARCH=wasm

[supermigo]

../../../../gosrc/pkg/mod/github.com/tetratelabs/[email protected]/internal/sysfs/open_file_js.go:11:81: undefined: File
../../../../gosrc/pkg/mod/github.com/tetratelabs/[email protected]/internal/sysfs/open_file_js.go:16:12: undefined: O_DIRECTORY
../../../../gosrc/pkg/mod/github.com/tetratelabs/[email protected]/internal/sysfs/open_file_js.go:16:26: undefined: O_NOFOLLOW
this error not support wasm

[achille-roussel]

Hello @supermigo

Thanks for reporting tho we're going to need a bit more details from you to be able to help address the issue.

Would you be able to resubmit the issue and follow the bug reporting template?

[mathetake]

I believe this is the error when we try to build downstream user of wazero with GOOS=js GOARCH=wasm:

$ GOOS=js GOARCH=wasm go build ./...
# github.com/tetratelabs/wazero/internal/sysfs
internal/sysfs/open_file_js.go:11:81: undefined: File
internal/sysfs/open_file_js.go:16:12: undefined: O_DIRECTORY
internal/sysfs/open_file_js.go:16:26: undefined: O_NOFOLLOW
internal/sysfs/sock.go:131:15: undefined: syscall.SHUT_RD
internal/sysfs/sock.go:133:15: undefined: syscall.SHUT_WR
internal/sysfs/sock.go:135:15: undefined: syscall.SHUT_RDWR
internal/sysfs/sock.go:153:28: undefined: syscall.SHUT_RDWR

[mathetake]

GOOS=wasip1 GOARCH=wasm gotip build ./...
# github.com/tetratelabs/wazero/internal/fsapi
internal/fsapi/constants.go:10:24: undefined: syscall.O_DIRECTORY
internal/fsapi/constants.go:11:24: undefined: syscall.O_NOFOLLOW
internal/fsapi/constants.go:12:24: undefined: syscall.O_NONBLOCK

Also found that wasip1 doesn't build

[codefromthecrypt]

sounds like we are missing an _unsupported.go file somewhere.

[mathetake]

seems that this has been resolved together with #1578