Is there a simple direct way to compile with libdispatch on Ubuntu?

Isaac_Gouy · January 28, 2016, 12:00am

I have

/usr/include/Block.h

/usr/include/dispatch/dispatch.h

installed and have a program that uses GCD.

Is there a simple direct way to reference libdispatch in the program and on the command line to compile with swiftc?

francisbailey · January 28, 2016, 5:57am

Hi Isaac,

I recently came across this issue as well. You can use the command specified in this answer: Swift in Linux: use of unresolved identifier 'dispatch_async' - Stack Overflow
Basically adding -Xcc -fblocks should get it to work.

If you're using the swift build command, the latest snapshot 2016-01-25-a, you can now pass in -Xcc args from your Package.swift file. See: https://github.com/apple/swift-package-manager/pull/107 for more details.

···

-------- Original Message --------
Subject: [swift-users] Is there a simple direct way to compile with libdispatch on Ubuntu?
Local Time: January 27, 2016 4:00 pm
UTC Time: January 28, 2016 12:00 AM
From: swift-users@swift.org
To: swift-users@swift.org

I have

/usr/include/Block.h

/usr/include/dispatch/dispatch.h

installed and have a program that uses GCD.

Is there a simple direct way to reference libdispatch in the program and on the command line to compile with swiftc?
_______________________________________________
swift-users mailing list
swift-users@swift.org
https://lists.swift.org/mailman/listinfo/swift-users

Isaac_Gouy · January 29, 2016, 8:09pm

I guess I'm still doing something wrong?

module CBlock [system] { header "/usr/include/Block.h"
link "BlocksRuntime"
export *
}

module Cdispatch [system] {
   header "/usr/include/dispatch/dispatch.h"
   link "dispatch"
   export *
}

$ ls /usr/include/Block.h
/usr/include/Block.h

$ ls /usr/include/dispatch/dispatch.h
/usr/include/dispatch/dispatch.h

$ ls
CBlock Cdispatch mandelbrot.swift

mandelbrot.swift
import Glibc
import CBlock

import Cdispatch

$ /usr/local/src/swift-2.2-SNAPSHOT-2016-01-25-a-ubuntu15.10/usr/bin/swiftc -o mandelbrot -Ounchecked -whole-module-optimization mandelbrot.swift -Xcc -F-module-map=CBlock/module.modulemap -Xcc -F-module-map=Cdispatch/module.modulemap -Xcc -fblocks -I /usr/include -I ./CBlock -I ./Cdispatch

mandelbrot.swift:23:20: error: use of undeclared type 'dispatch_io_t'
func writeLine(io: dispatch_io_t, _ data: dispatch_data_t, _ queue: dispatch_queue_t, _ last: Bool) {
^~~~~~~~~~~~~
mandelbrot.swift:23:43: error: use of undeclared type 'dispatch_data_t'
func writeLine(io: dispatch_io_t, _ data: dispatch_data_t, _ queue: dispatch_queue_t, _ last: Bool) {
^~~~~~~~~~~~~~~
mandelbrot.swift:24:5: error: use of unresolved identifier 'dispatch_io_write'
dispatch_io_write(io, 0, data, queue) {
^~~~~~~~~~~~~~~~~

etc etc

···

On Wednesday, January 27, 2016 9:57 PM, francisbailey <francisbailey@protonmail.com> wrote:

I recently came across this issue as well. You can use the command specified in this answer: Swift in Linux: use of unresolved identifier 'dispatch_async' - Stack Overflow

Basically adding -Xcc -fblocks should get it to work.

Max_Howell · January 29, 2016, 8:57pm

Looks fine to me. Can you zip it up and mail me?

Hopefully I can diagnose the problems. Platform?

···

On Jan 29, 2016, at 12:09 PM, Isaac Gouy via swift-users <swift-users@swift.org> wrote:

I guess I'm still doing something wrong?

module CBlock [system] { header "/usr/include/Block.h"
  link "BlocksRuntime"
  export *
}

module Cdispatch [system] {
  header "/usr/include/dispatch/dispatch.h"
  link "dispatch"
  export *
}

$ ls /usr/include/Block.h
/usr/include/Block.h

$ ls /usr/include/dispatch/dispatch.h
/usr/include/dispatch/dispatch.h

$ ls
CBlock Cdispatch mandelbrot.swift

mandelbrot.swift
   import Glibc
   import CBlock

   import Cdispatch

$ /usr/local/src/swift-2.2-SNAPSHOT-2016-01-25-a-ubuntu15.10/usr/bin/swiftc -o mandelbrot -Ounchecked -whole-module-optimization mandelbrot.swift -Xcc -F-module-map=CBlock/module.modulemap -Xcc -F-module-map=Cdispatch/module.modulemap -Xcc -fblocks -I /usr/include -I ./CBlock -I ./Cdispatch

mandelbrot.swift:23:20: error: use of undeclared type 'dispatch_io_t'
func writeLine(io: dispatch_io_t, _ data: dispatch_data_t, _ queue: dispatch_queue_t, _ last: Bool) {
^~~~~~~~~~~~~
mandelbrot.swift:23:43: error: use of undeclared type 'dispatch_data_t'
func writeLine(io: dispatch_io_t, _ data: dispatch_data_t, _ queue: dispatch_queue_t, _ last: Bool) {
^~~~~~~~~~~~~~~
mandelbrot.swift:24:5: error: use of unresolved identifier 'dispatch_io_write'
dispatch_io_write(io, 0, data, queue) {
^~~~~~~~~~~~~~~~~

etc etc

On Wednesday, January 27, 2016 9:57 PM, francisbailey <francisbailey@protonmail.com> wrote:

I recently came across this issue as well. You can use the command specified in this answer: Swift in Linux: use of unresolved identifier 'dispatch_async' - Stack Overflow

Basically adding -Xcc -fblocks should get it to work.

_______________________________________________
swift-users mailing list
swift-users@swift.org
https://lists.swift.org/mailman/listinfo/swift-users

Max_Howell · January 30, 2016, 12:18am

Apparently Ubuntu 15.10’s lib dispatch doesn’t come with dispatch/io.h

So those symbols indeed don’t exist in any headers here.

I’m not familiar enough with the lib dispatch distribution to say if this is expected or not.

···

On Jan 29, 2016, at 2:33 PM, Isaac Gouy <igouy2@yahoo.com> wrote:

Looks fine to me. Can you zip it up and mail me?

Hopefully I can diagnose the problems. Platform?

Ubuntu 15.10

Linux x64 4.2.0-25-generic #30-Ubuntu SMP<swift_test.zip>

Isaac_Gouy · January 30, 2016, 3:01am

Thank you for investigating the problem for me and finding an answer I can understand.

···

On Friday, January 29, 2016 4:18 PM, Max Howell <max.howell@apple.com> wrote:

> Apparently Ubuntu 15.10’s lib dispatch doesn’t come with dispatch/io.h

So those symbols indeed don’t exist in any headers here.

I’m not familiar enough with the lib dispatch distribution to say if this is

expected or not.

Isaac_Gouy · February 3, 2016, 5:44pm

On Friday, January 29, 2016 4:18 PM, Max Howell

Apparently Ubuntu 15.10’s lib dispatch doesn’t come with dispatch/io.h

So those symbols indeed don’t exist in any headers here.

So I fetched the source:

GitHub - apple/swift-corelibs-libdispatch: The libdispatch Project, (a.k.a. Grand Central Dispatch), for concurrency on multicore hardware

:and built the libraries.

It now seems like I'm missing something that isn't libdispatch related -- or should I have chosen one of those --with-apple- options when I built?

mandelbrot.swift-2.swift:78:40: error: use of unresolved identifier 'NSUTF8StringEncoding'

See
http://benchmarksgame.alioth.debian.org/u64q/program.php?test=mandelbrot&lang=swift&id=2#log

francisbailey · February 3, 2016, 6:02pm

I believe NSUTF8StringEncoding is part of the Foindation library which isn't fully implemented yet on Linux. You can see the status for it here:

github.com

apple/swift-corelibs-foundation/blob/main/Docs/Status.md

# Implementation Status

This document lays out the structure of the Foundation project, and provides the current implementation status of each major feature.

Foundation is divided into groups of related functionality. These groups are currently laid out in the Xcode project, even though they are in a flat structure on disk.

As Foundation is a work in progress, not all methods and functionality are present. When implementations are completed, this list should be updated to reflect the current state of the library.

#### Table Key

##### Implementation Status
* _N/A_: This entity is internal or private and implemented ad hoc; there are no guidelines in place to suggest what completion might look like
* _Unimplemented_: This entity exists, but all functions and methods are `NSUnimplemented()`
* _Incomplete_: Implementation of this entity has begun, but critical sections have been left `NSUnimplemented()`
* _Mostly Complete_: All critical sections of this entity have been implemented, but some methods might remain `NSUnimplemented()`
* _Complete_: No methods are left `NSUnimplemented()` (though this is not a guarantee that work is complete -- there may be methods that need overriding or extra work)

##### Test Coverage
* _N/A_: This entity is internal and public tests are inappropriate, or it is an entity for which testing does not make sense
* _None_: There are no unit tests specific to this entity; even if it is used indirectly in other unit tests, we should have tests targeting this entity in isolation

This file has been truncated. show original

On Friday, January 29, 2016 4:18 PM, Max Howell

Apparently Ubuntu 15.10’s lib dispatch doesn’t come with dispatch/io.h

So those symbols indeed don’t exist in any headers here.

So I fetched the source:

:and built the libraries.

It now seems like I'm missing something that isn't libdispatch related -- or should I have chosen one of those --with-apple- options when I built?

mandelbrot.swift-2.swift:78:40: error: use of unresolved identifier 'NSUTF8StringEncoding'

See
http://benchmarksgame.alioth.debian.org/u64q/program.php?test=mandelbrot&lang=swift&id=2#log

···

On Wed, Feb 3, 2016 at 09:44, Isaac Gouy via swift-users <'swift-users@swift.org'> wrote:
_______________________________________________
swift-users mailing list
swift-users@swift.org
https://lists.swift.org/mailman/listinfo/swift-users

Isaac_Gouy · February 3, 2016, 6:24pm

Is use of libdispatch in Swift on linux, dependent on the Foundation library, or is there a way to use libdispatch without stuff like 'NSUTF8StringEncoding' ?

On Wednesday, February 3, 2016 10:03 AM, francisbailey

···

I believe NSUTF8StringEncoding is part of the Foindation library which isn't fully implemented yet on Linux. You can see the status for it here:
https://github.com/apple/swift-corelibs-foundation/blob/master/Docs/Status.md

On Wed, Feb 3, 2016 at 09:44, Isaac Gouy via swift-users <'swift-users@swift.org'> wrote:

So I fetched the source:

GitHub - apple/swift-corelibs-libdispatch: The libdispatch Project, (a.k.a. Grand Central Dispatch), for concurrency on multicore hardware

:and built the libraries.

It now seems like I'm missing something that isn't libdispatch related -- or should I have chosen one of those --with-apple- options when I built?

mandelbrot.swift-2.swift:78:40: error: use of unresolved identifier 'NSUTF8StringEncoding'

See
http://benchmarksgame.alioth.debian.org/u64q/program.php?test=mandelbrot&lang=swift&id=2#log

Tom_Sheffler · February 3, 2016, 7:19pm

I have used libdispatch without Foundation - but that was on Ubuntu 14.04 and using the libdispatch from the distribution. (I did not compile it.)

-T

···

On Feb 3, 2016, at 10:24 AM, Isaac Gouy via swift-users <swift-users@swift.org> wrote:

Is use of libdispatch in Swift on linux, dependent on the Foundation library, or is there a way to use libdispatch without stuff like 'NSUTF8StringEncoding' ?

On Wednesday, February 3, 2016 10:03 AM, francisbailey

I believe NSUTF8StringEncoding is part of the Foindation library which isn't fully implemented yet on Linux. You can see the status for it here:
https://github.com/apple/swift-corelibs-foundation/blob/master/Docs/Status.md

On Wed, Feb 3, 2016 at 09:44, Isaac Gouy via swift-users <'swift-users@swift.org'> wrote:

So I fetched the source:

GitHub - apple/swift-corelibs-libdispatch: The libdispatch Project, (a.k.a. Grand Central Dispatch), for concurrency on multicore hardware

:and built the libraries.

It now seems like I'm missing something that isn't libdispatch related -- or should I have chosen one of those --with-apple- options when I built?

mandelbrot.swift-2.swift:78:40: error: use of unresolved identifier 'NSUTF8StringEncoding'

See
http://benchmarksgame.alioth.debian.org/u64q/program.php?test=mandelbrot&lang=swift&id=2#log

_______________________________________________
swift-users mailing list
swift-users@swift.org
https://lists.swift.org/mailman/listinfo/swift-users

Isaac_Gouy · February 13, 2016, 8:57pm

After much patient work by Ralph Ganszky I now have a working install and working command-line for libdispatch on Ubuntu:

http://benchmarksgame.alioth.debian.org/u64q/program.php?test=mandelbrot&lang=swift&id=2#log

···

On Wednesday, February 3, 2016 10:03 AM, francisbailey

I believe NSUTF8StringEncoding is part of the Foindation library which

isn't fully implemented yet on Linux. You can see the status for it here:

https://github.com/apple/swift-corelibs-foundation/blob/master/Docs/Status.md

On Wed, Feb 3, 2016 at 09:44, Isaac Gouy via swift-users > <'swift-users@swift.org'> wrote:

So I fetched the source:

GitHub - apple/swift-corelibs-libdispatch: The libdispatch Project, (a.k.a. Grand Central Dispatch), for concurrency on multicore hardware

:and built the libraries.

It now seems like I'm missing something that isn't libdispatch

related -- or should I have chosen one of those --with-apple- options when I
built?

mandelbrot.swift-2.swift:78:40: error: use of unresolved identifier

'NSUTF8StringEncoding'