SEEK_CUR not declared by package os

[typeless]

I am trying to use tinygo to build a binary for an embedded Linux device. I got the following errors:

$ tinygo build -o out.tiny .
../../cap/v4/cap.go:767:27: SEEK_CUR not declared by package os
../../cap/v4/cap.go:851:46: SEEK_SET not declared by package os

TinyGo version:

$ tinygo version
tinygo version 0.20.0-dev-ca4f251 linux/amd64 (using go version go1.17 and LLVM version 11.0.0)

My build OS:

$ cat /etc/os-release
NAME="Ubuntu"
VERSION="20.04.3 LTS (Focal Fossa)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 20.04.3 LTS"
VERSION_ID="20.04"
HOME_URL="https://www.ubuntu.com/"
SUPPORT_URL="https://help.ubuntu.com/"
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
VERSION_CODENAME=focal
UBUNTU_CODENAME=focal

[ardnew]

It appears a package you are using depends on os from the Go standard library, which obviously isn't available for baremetal TinyGo.

Can you share the output of command tinygo list -json from the same directory you are trying to build from?

[ardnew]

Also, if you are trying to build native ELF executables for Ubuntu, see: https://tinygo.org/docs/guides/linux/

Otherwise, you need to specify a build target for tinygo, such as tinygo build -o=out.tiny -target=arduino .

[typeless]

I tried with GOARCH=arm as mentioned in the guides, but it gave the same build error too.

This is a proprietary project, which contains some information that I am afraid unsuitable to share.

$ tinygo list -json
{
    "Dir": "/home/mural/src/castlestech.com/lbox/cmd/uld",
    "ImportPath": "castlestech.com/lbox/cmd/uld",
    "Name": "main",
    "Target": "/home/mural/bin/uld",
    "Root": "/home/mural/src/castlestech.com/lbox",
    "Module": {
        "Path": "castlestech.com/lbox",
        "Main": true,
        "Dir": "/home/mural/src/castlestech.com/lbox",
        "GoMod": "/home/mural/src/castlestech.com/lbox/go.mod",
        "GoVersion": "1.13"
    },
    "Match": [
        "."
    ],
    "Stale": true,
    "StaleReason": "stale dependency: reflect",
    "GoFiles": [
        "main.go"
    ],
    "Imports": [
        "castlestech.com/lbox/cmd/uld/internal/captype",
        "castlestech.com/lbox/cmd/uld/internal/decap",
        "castlestech.com/lbox/cmd/uld/internal/download",
        "castlestech.com/lbox/cmd/uld/internal/upload",
        "flag",
        "fmt",
        "io",
        "log",
        "os"
    ],
    "Deps": [
        "bufio",
        "bytes",
        "castlestech.com/lbox/cap/v3",
        "castlestech.com/lbox/cap/v4",
        "castlestech.com/lbox/cmd/uld/internal/captype",
        "castlestech.com/lbox/cmd/uld/internal/decap",
        "castlestech.com/lbox/cmd/uld/internal/download",
        "castlestech.com/lbox/cmd/uld/internal/upload",
        "castlestech.com/lbox/dle",
        "castlestech.com/lbox/multitty",
        "castlestech.com/lbox/crypto/cipher",
        "castlestech.com/lbox/crypto/rsa",
        "context",
        "crypto",
        "crypto/aes",
        "crypto/cipher",
        "crypto/des",
        "crypto/dsa",
        "crypto/ecdsa",
        "crypto/ed25519",
        "crypto/ed25519/internal/edwards25519",
        "crypto/ed25519/internal/edwards25519/field",
        "crypto/elliptic",
        "crypto/elliptic/internal/fiat",
        "crypto/internal/randutil",
        "crypto/internal/subtle",
        "crypto/md5",
        "crypto/rand",
        "crypto/rsa",
        "crypto/sha1",
        "crypto/sha256",
        "crypto/sha512",
        "crypto/subtle",
        "crypto/x509",
        "crypto/x509/pkix",
        "device",
        "encoding/asn1",
        "encoding/base64",
        "encoding/binary",
        "encoding/hex",
        "encoding/pem",
        "errors",
        "flag",
        "fmt",
        "github.com/pkg/term",
        "github.com/pkg/term/termios",
        "hash",
        "internal/bytealg",
        "internal/cpu",
        "internal/fmtsort",
        "internal/itoa",
        "internal/oserror",
        "internal/race",
        "internal/reflectlite",
        "internal/task",
        "internal/unsafeheader",
        "io",
        "io/fs",
        "io/ioutil",
        "log",
        "math",
        "math/big",
        "math/bits",
        "math/rand",
        "net",
        "net/url",
        "os",
        "os/signal",
        "path",
        "path/filepath",
        "reflect",
        "runtime",
        "runtime/interrupt",
        "sort",
        "strconv",
        "strings",
        "sync",
        "sync/atomic",
        "syscall",
        "time",
        "unicode",
        "unicode/utf16",
        "unicode/utf8",
        "unsafe",
        "vendor/golang.org/x/crypto/cryptobyte",
        "vendor/golang.org/x/crypto/cryptobyte/asn1"
    ],
    "TestGoFiles": [
        "download_test.go"
    ],
    "TestImports": [
        "bufio",
        "context",
        "fmt",
        "io",
        "os",
        "os/exec",
        "regexp",
        "testing",
        "time"
    ]
}

[aykevl]

Here is a fix: https://github.com/tinygo-org/tinygo/pull/2114

[typeless]

2114 Fixes the problem.

There are other missing APIs.

internal/decap/decap.go:201:16: Rename not declared by package os
internal/decap/decap.go:231:16: Chdir not declared by package os
internal/decap/decap.go:265:12: NewFile not declared by package os

Should I create a new issue?

[aykevl]

You can do that, or create a PR to add these to the os package :)

[deadprogram]

Released with 0.20.0 so now closing. Thank you!