[swift-users] How to create custom module without the package manager?

[cooper liu]

hi,
here is my test under mac os x

simple version
$swiftc -emit-module -emit-library greet.swift
emit greet.swiftdoc greet.swiftmodule libgreet.dylib
$swiftc -I. -L. -lgreet test.swift
emit test

detailed version
$swiftc -emit-module -emit-library -module-name greet -module-link-name mm
-o libmm.dylib  greet.swift
emit greet.swiftdoc greet.swiftmodule libmm.dylib
$swiftc -I. -L. -lmm test.swift
emit test

2015-12-12 23:05 GMT+08:00 Bee via swift-users <swift-users at swift.org>:

> Sorry… I answer my own question. It need -l<module-name> argument. So, the
> last command should be:
>
> $ swiftc test.swift -lgreet
>
> then it emitted a runnable app. I wonder why does it need an explicit
> module name in the command line? While there is already an import clause
> within the source file. Anyway, problem solved.
>
> Thank you. :)
>
>
> On Sat, Dec 12, 2015 at 9:53 PM, Bee <bee.ography at gmail.com> wrote:
>
>> Sorry… forgot to say. I'm using Swift v.2.2 on Linux Ubuntu 14.04.
>>
>>
>> On Sat, Dec 12, 2015 at 9:50 PM, Bee <bee.ography at gmail.com> wrote:
>>
>>> Hi all,
>>>
>>> I'd like to create my own simple custom module, but I don't want to use
>>> the complicated package manager. Package manager is overkill for a simple
>>> single source file module. So, here's what I've tried.
>>>
>>> file: greet.swift
>>>
>>> public func askName() {
>>> print("What's your name? ")
>>> let name = readLine()!
>>> print("Hello, \(name)... good to see you!")
>>> }
>>>
>>> file: main.swift
>>>
>>> askName()
>>>
>>> terminal:
>>>
>>> $ swiftc -emit-library -emit-object greet.swift -module-name greet
>>>
>>> emits greet.o
>>>
>>> $ ar rcs libgreet.a greet.o
>>>
>>> emits libgreet.a
>>>
>>> $ swiftc -emit-module greet.swift -module-name greet
>>>
>>> emits greet.swiftmodule and greet.swiftdoc
>>>
>>> All went well, so I think now I already have had the "greet" module.
>>> Let's try to use it…
>>>
>>> file: test.swift
>>>
>>> import greet
>>> askName()
>>>
>>> terminal:
>>>
>>> $ swiftc test.swift
>>> clang: warning: argument unused during compilation: '-F/home/username'
>>> /tmp/test-b63aab.o: In function `main':
>>> /tmp/test-b63aab.o:(.text+0x41): undefined reference to
>>> `_TF5greet7askNameFT_T_'
>>> clang: error: linker command failed with exit code 1 (use -v to see
>>> invocation)
>>> <unknown>:0: error: link command failed with exit code 1 (use -v to see
>>> invocation)
>>>
>>> What's happening? What's wrong? How can I fix it?
>>>
>>> Thank you.
>>>
>>> Regards,
>>>
>>> --
>>> -Bee-
>>>
>>>
>>
>>
>> --
>> -Bee-
>>
>>
>
>
> --
> -Bee-
>
>
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>
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