[swift-build-dev] [Review] SE-0038 Package Manager C Language Target Support

[Chris Bailey]

Hi Rick:

Thanks for putting this proposal together - having the ability to build 
and link to C dependencies is going to be a huge step forward and this 
very much looks like a step in the right direction.

I know there's been some discussion about being able to invoke custom 
build targets and/or link to local dependencies. I agree that we don't 
want to pre-design the entire solution but iterate in the right direction 
and get feedback as we go. One thing we can do is look at some of the 
challenges and solutions from other languages.

If we look at Node.js/NPM, as the most used language package manager, it 
highlights the high usage of native modules. Most native modules have a 
dependency on "nan" which has >6.5M downloads a month and approaching 1000 
dependent modules.

As an example, one of those dependents is "zmq" (30K+ downloads/month) 
which provides Node.js bindings for ZeroMQ. This provides a Node.js 
wrapper around the zeromq library (installable via homebrew, apt-get etc). 
The NPM approach is that at install/build time, the binding.gyp file can 
be configured to check for the presence of the library, and to add the 
necessary include and link flags.

I know that supporting that kind of scenario is outside of the scope of 
this proposal - is it however a direction we're headed to?

Thanks,

Chris




From:   Rick Ballard via swift-build-dev <swift-build-dev at swift.org>
To:     swift-evolution-announce at swift.org
Cc:     swift-evolution <swift-evolution at swift.org>, 
swift-build-dev at swift.org
Date:   17/02/2016 02:12
Subject:        [swift-build-dev] [Review] SE-0038 Package Manager C 
Language        Target Support
Sent by:        swift-build-dev-bounces at swift.org



Hello Swift community,

A review of “Package Manager C Language Target Support” for the Swift 
Package Manager begins now and runs through Monday, February 22th. The 
proposal is available here:

                 
https://github.com/apple/swift-evolution/blob/master/proposals/0038-swiftpm-c-language-targets.md


Reviews are an important part of the Swift evolution process. All reviews 
should be sent to the swift-evolution mailing list at

                 https://lists.swift.org/mailman/listinfo/swift-evolution

or, if you would like to keep your feedback private, directly to the 
review manager.

What goes into a review?

The goal of the review process is to improve the proposal under review 
through constructive criticism and, eventually, determine the direction of 
Swift. When writing your review, here are some questions you might want to 
answer in your review:

                 * What is your evaluation of the proposal?
                 * Is the problem being addressed significant enough to 
warrant a change to the Swift Package Manager?
                 * Does this proposal fit well with the feel and direction 
of the Swift Package Manager?
                 * If you have you used other package managers with a 
similar feature, how do you feel that this proposal compares to those?
                 * How much effort did you put into your review? A glance, 
a quick reading, or an in-depth study?

More information about the Swift evolution process is available at

                 
https://github.com/apple/swift-evolution/blob/master/process.md

Thank you,

                 - Rick
                   Review Manager

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