Building on Plan 9 fails

[sctaw]

What I did:

I tried to install https://github.com/anacrolix/torrent which depends on bbolt

What I expected:

to get bbolt and thus anarcolinux/torrent compiling, per 9front documentation, it has been possible to build it: http://fqa.9front.org/fqa8.html#8.4.9.2.2

What I got:

go.etcd.io/bbolt

go/pkg/mod/go.etcd.io/bbolt@v1.3.6/db.go:230:12: undefined: flock
go/pkg/mod/go.etcd.io/bbolt@v1.3.6/db.go:375:12: undefined: mmap
go/pkg/mod/go.etcd.io/bbolt@v1.3.6/db.go:404:12: undefined: munmap
go/pkg/mod/go.etcd.io/bbolt@v1.3.6/db.go:508:12: undefined: fdatasync
go/pkg/mod/go.etcd.io/bbolt@v1.3.6/db.go:554:14: undefined: funlock
go/pkg/mod/go.etcd.io/bbolt@v1.3.6/db.go:914:37: undefined: fdatasync
go/pkg/mod/go.etcd.io/bbolt@v1.3.6/mlock_unix.go:14:17: undefined: unix.Mlock
go/pkg/mod/go.etcd.io/bbolt@v1.3.6/mlock_unix.go:32:17: undefined: unix.Munlock
go/pkg/mod/go.etcd.io/bbolt@v1.3.6/tx.go:558:13: undefined: fdatasync
go/pkg/mod/go.etcd.io/bbolt@v1.3.6/tx.go:595:13: undefined: fdatasync
go/pkg/mod/go.etcd.io/bbolt@v1.3.6/tx.go:595:13: too many errors

What I tried:

Changing bbolt version to 1.3.7

Result:

go.etcd.io/bbolt

/usr/glenda/go/pkg/mod/go.etcd.io/bbolt@v1.3.7/db.go:242:12: undefined: flock
/usr/glenda/go/pkg/mod/go.etcd.io/bbolt@v1.3.7/db.go:469:12: undefined: mmap
/usr/glenda/go/pkg/mod/go.etcd.io/bbolt@v1.3.7/db.go:511:12: undefined: munmap
/usr/glenda/go/pkg/mod/go.etcd.io/bbolt@v1.3.7/db.go:616:12: undefined: fdatasync
/usr/glenda/go/pkg/mod/go.etcd.io/bbolt@v1.3.7/db.go:662:14: undefined: funlock
/usr/glenda/go/pkg/mod/go.etcd.io/bbolt@v1.3.7/db.go:1035:37: undefined: fdatasync
/usr/glenda/go/pkg/mod/go.etcd.io/bbolt@v1.3.7/mlock_unix.go:15:17: undefined: unix.Mlock
/usr/glenda/go/pkg/mod/go.etcd.io/bbolt@v1.3.7/mlock_unix.go:33:17: undefined: unix.Munlock
/usr/glenda/go/pkg/mod/go.etcd.io/bbolt@v1.3.7/tx.go:473:13: undefined: fdatasync
/usr/glenda/go/pkg/mod/go.etcd.io/bbolt@v1.3.7/tx.go:510:13: undefined: fdatasync
/usr/glenda/go/pkg/mod/go.etcd.io/bbolt@v1.3.7/tx.go:510:13: too many errors

My environment:

Plan9Front amd64 running in Qemu

go env output:

; go env
GO111MODULE=''
GOARCH='amd64'
GOBIN=''
GOCACHE='/usr/glenda/lib/cache/go-build'
GOENV='/usr/glenda/lib/go/env'
GOEXE=''
GOEXPERIMENT=''
GOFLAGS=''
GOHOSTARCH='amd64'
GOHOSTOS='plan9'
GOINSECURE=''
GOMODCACHE='/usr/glenda/go/pkg/mod'
GONOPROXY=''
GONOSUMDB=''
GOOS='plan9'
GOPATH='/usr/glenda/go'
GOPRIVATE=''
GOPROXY='https://proxy.golang.org,direct'
GOROOT='/sys/lib/go/amd64-1.21.1'
GOSUMDB='sum.golang.org'
GOTMPDIR=''
GOTOOLCHAIN='auto'
GOTOOLDIR='/sys/lib/go/amd64-1.21.1/pkg/tool/plan9_amd64'
GOVCS=''
GOVERSION='go1.21.1'
GCCGO='gccgo'
GOAMD64='v1'
AR='ar'
CC='gcc'
CXX='g++'
CGO_ENABLED='0'
GOMOD='/dev/null'
GOWORK=''
CGO_CFLAGS='-O2 -g'
CGO_CPPFLAGS=''
CGO_CXXFLAGS='-O2 -g'
CGO_FFLAGS='-O2 -g'
CGO_LDFLAGS='-O2 -g'
PKG_CONFIG='pkg-config'
GOGCCFLAGS='-fPIC -m64 -fno-caret-diagnostics -Qunused-arguments -Wl,--no-gc-sections -fmessage-length=0 -ffile-prefix-map=/tmp/go-build2933823274=/tmp/go-build -gno-record-gcc-switches'

[ahrtr]

Thanks for raising this. Unfortunately bbolt doesn't support plan9 so far.

But it might just need minor effort to support it,

• Add a new file bolt_plan9.go to implement flock, funlock, mmap, munmap and fdatasync. Similar to bolt_windows.go
• Add a new file mlock_plan9.go to implement mlock and munlock, similar to mlock_windows.go. Also change //go:build !windows to //go:build !windows && !plan9 in mlock_unix.go.

[ahrtr]

#626 (comment)

[ahrtr]

Linked to #665