[swift-corelibs-dev] libdispatch module on Linux

[Daniel Eggert]

How would I go about passing ‘-fblocks’ when building a module using ‘swift build’?

Should I file a bug to track this?

/Daniel


> On 18 Jan 2016, at 18:00, Pierre Habouzit <phabouzit at apple.com> wrote:
> 
> this is very likely as __BLOCKS__ is only defined when you pass -fblocks.
> 
> though, I’m told the blocks layout from swift and the one from libblocks-runtime-dev is not the same so it will likely crash (because dispatch as I said in another thread, uses that layout to get to the function pointer stored there). but worth trying.
> 
> -Pierre
> 
>> On Jan 18, 2016, at 8:58 AM, Philippe Hausler via swift-corelibs-dev <swift-corelibs-dev at swift.org> wrote:
>> 
>> I noticed with importing CoreFoundation into swift-corelibs-foundation that we needed to pass  -Xcc -fblocks to switfc to make it import a few things correctly on linux. I wonder if that is the same thing that is happening here too.
>> 
>>> On Jan 18, 2016, at 8:31 AM, Daniel Eggert via swift-corelibs-dev <swift-corelibs-dev at swift.org> wrote:
>>> 
>>> I’ve create a system module for libdispatch, but when I import it, I don’t see anything guarded by __BLOCKS__.
>>> 
>>> Is there something I need to do when defining the system module to make that work?
>>> 
>>> Or something when I use it?
>>> 
>>> /Daniel
>>> 
>>> 
>>> % cat Package.swift 
>>> import PackageDescription
>>> let package = Package(name: "CDispatch”)
>>> 
>>> 
>>> % cat module.modulemap 
>>> module CDispatch [system] {
>>> umbrella header "/usr/local/include/dispatch/dispatch.h"
>>> link "dispatch"
>>> export *
>>> }
>>> 
>>> 
>>> % uname -a
>>> Linux ubuntu 4.2.0-16-generic #19-Ubuntu SMP Thu Oct 8 15:35:06 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
>>> 
>>> 
>>> 
>>> % swift -I path/to/CDispatch-1.0.2
>>> Welcome to Swift version 2.2-dev (LLVM 3ebdbb2c7e, Clang f66c5bb67b, Swift 1f2908b4f7). Type :help for assistance.
>>> 1> import CDispatch
>>> 2> dispatch_group_
>>> Available completions:
>>> 	dispatch_group_async_f(group: dispatch_group_t, queue: dispatch_queue_t, context: UnsafeMutablePointer<Void>, work: dispatch_function_t(UnsafeMutablePointer<Void>) -> Void) -> Void
>>> 	dispatch_group_create() -> dispatch_group_t
>>> 	dispatch_group_enter(group: dispatch_group_t) -> Void
>>> 	dispatch_group_leave(group: dispatch_group_t) -> Void
>>> 	dispatch_group_notify_f(group: dispatch_group_t, queue: dispatch_queue_t, context: UnsafeMutablePointer<Void>, work: dispatch_function_t(UnsafeMutablePointer<Void>) -> Void) -> Void
>>> 	dispatch_group_t
>>> 	dispatch_group_wait(group: dispatch_group_t, timeout: dispatch_time_t) -> Int
>>> 
>>> _______________________________________________
>>> swift-corelibs-dev mailing list
>>> swift-corelibs-dev at swift.org
>>> https://lists.swift.org/mailman/listinfo/swift-corelibs-dev
>> 
>> _______________________________________________
>> swift-corelibs-dev mailing list
>> swift-corelibs-dev at swift.org
>> https://lists.swift.org/mailman/listinfo/swift-corelibs-dev
>