A third part company has provide me a Framework. I would like to check the swift version embedded in the framework (2.2, 2.3 or 3.x) The framework directory include libswift dylib files.
How to check the swift version used in the framework ?
Thanks !
I used the -Swift.h Header file.
$ cat FrameworkName.framework/Headers/FrameworkName-Swift.h First line is the information you need:
// Generated by Apple Swift version 5.1 (swiftlang-1100.0.270.13 clang-1100.0.33.7) You can use otool to print all versions of included binaries in the framework:
otool -l /path/to/your/FrameworkName.framework/Versions/A/FrameworkName 
Load command 48 cmd LC_LOAD_DYLIB cmdsize 60 name @rpath/libswiftCoreLocation.dylib (offset 24) time stamp 2 Thu Jan 1 01:00:02 1970 current version 703.0.18 compatibility version 1.0.0
otool -l /path/to/your/FrameworkName.framework/FrameworkNameYou can use Oskars answer to get the swiftlang version (in your case: 703.0.18).
Now you just have to lookup for the Swift version in the following table:
Swiftlang version Swift version - - swiftlang-602.0.49.3 1.2 swiftlang-602.0.49.6 1.2 swiftlang-602.0.53.1 1.2 swiftlang-700.0.59 2.0 swiftlang-700.1.101.6 2.1 swiftlang-700.1.101.15 2.1.1 swiftlang-703.0.18.1 2.2 swiftlang-703.0.18.8 2.2 swiftlang-800.0.46.2 3.0 swiftlang-800.0.58.6 3.0.1 swiftlang-800.0.63 3.0.2 swiftlang-802.0.48 3.1 swiftlang-802.0.51 3.1 swiftlang-802.0.53 3.1 So 703.0.18 means Swift version 2.2.
If framework supports ABI[About] Module Stability and Library Evolution you also can find it. From Swift v5.1
<framework.name>.framework -> Modules -> <framework.name>.swiftmodeule -> <arch>. swiftinterface For example x86_64.swiftinterface
// swift-compiler-version: Apple Swift version 5.2.4 (swiftlang-1103.0.32.9 clang-1103.0.32.53) Personally, I go with something like:
grep "Generated by" Carthage/Build/iOS/Alamofire.framework/Headers/Alamofire-Swift.h
