How to use libxml in Swift?

Question

I try to use this new language to start a new project with Some of my old code, I used Libxml2.2 in my old project,so xcode shows "libxml.h/parse.h file not found" after my putting the code in my new project. i have already imported the "libxml2.2.dylib"

This is good read https://spin.atomicobject.com/2015/02/23/c-libraries-swift/ — onmyway133, May 07 '16 at 19:27

score 9 · Answer 1 · edited May 23 '17 at 12:26

I 've made it work with CommonCrypto https://github.com/onmyway133/CommonCrypto.swift but libxml should be the same. Things to keep in mind

module.modulemap

Read http://clang.llvm.org/docs/Modules.html#module-map-language

Create a folder named libxml2 (in my case, it is at the same directory as my project file), then create a module.modulemap file inside

module libxml2 {
  header "/usr/include/libxml2/libxml/tree.h"
  export *
}

Here I add just tree.h, but you can add more for your need

SWIFT_INCLUDE_PATHS

Go to Target Build Settings, add this into Import Paths

${SRCROOT}/libxml2

HEADER_SEARCH_PATHS

Read Why am I getting this "libxml/tree.h file not found" error?

Go to Target Build Settings, add this into Header Search Paths

$(SDKROOT)/usr/include/libxml2

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score 6 · Answer 2 · answered Aug 06 '14 at 20:03

6

To get this working with my project in Xcode 6, I navigated to "Build Settings" for my project, and selected my target. I then searched for "Header Search Paths" in the Build Settings, and added the following line to both debug and release:

$(SDKROOT)/usr/include/libxml2

answered Aug 06 '14 at 20:03

FredL

1,035
9
23

This is not working, as the compiler will says that you can't include non-modular include – Loegic Jul 28 '15 at 09:26
There is currently a modulemap file for libxml2; perhaps it didn't exist when this question/comment were written. Note that that file actually suggests that you "Add "-Xcc -I$(SDKROOT)/usr/include/libxml2" to OTHER_SWIFT_FLAGS in Xcode project" as of Xcode 9. – Ben Pious Aug 29 '18 at 23:52

score 2 · Answer 3 · answered Sep 11 '14 at 00:28

2

I found that you can leave out importing 'libxml2.2.dylib' if you add '-lxml2' to OTHER_LDFLAGS.

answered Sep 11 '14 at 00:28

Mark Knopper

353
4
6

score 2 · Answer 4 · answered Sep 03 '15 at 10:57

You will have to create a custom module map file containing the header of libxml/tree.h like so :

module libxml [system] {
    header "/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/usr/include/libxml2/libxml/tree.h"
    export *
}

Then you place this file (module.modulemap) inside a folder -module for example- and add it to your project's and target's build settings.

You can now use @import libxml; in your code.

How to use libxml in Swift?

4 Answers4

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